Adding upstream version 8.4.4.upstream/8.4.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3220 insertions, 0 deletions

diff --git a/isisd/isis_cli.c b/isisd/isis_cli.c
new file mode 100644
index 0000000..a673cb8
--- /dev/null
+++ b/isisd/isis_cli.c
@@ -0,0 +1,3220 @@
+/*
+ * Copyright (C) 2001,2002   Sampo Saaristo
+ *                           Tampere University of Technology
+ *                           Institute of Communications Engineering
+ * Copyright (C) 2018        Volta Networks
+ *                           Emanuele Di Pascale
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <zebra.h>
+
+#include "if.h"
+#include "vrf.h"
+#include "log.h"
+#include "prefix.h"
+#include "command.h"
+#include "northbound_cli.h"
+#include "libfrr.h"
+#include "yang.h"
+#include "lib/linklist.h"
+#include "isisd/isisd.h"
+#include "isisd/isis_nb.h"
+#include "isisd/isis_misc.h"
+#include "isisd/isis_circuit.h"
+#include "isisd/isis_csm.h"
+
+#ifndef VTYSH_EXTRACT_PL
+#include "isisd/isis_cli_clippy.c"
+#endif
+
+#ifndef FABRICD
+
+/*
+ * XPath: /frr-isisd:isis/instance
+ */
+DEFPY_YANG_NOSH(router_isis, router_isis_cmd,
+		"router isis WORD$tag [vrf NAME$vrf_name]",
+		ROUTER_STR
+		"ISO IS-IS\n"
+		"ISO Routing area tag\n" VRF_CMD_HELP_STR)
+{
+	int ret;
+	char base_xpath[XPATH_MAXLEN];
+
+	if (!vrf_name)
+		vrf_name = VRF_DEFAULT_NAME;
+
+	snprintf(base_xpath, XPATH_MAXLEN,
+		 "/frr-isisd:isis/instance[area-tag='%s'][vrf='%s']", tag,
+		 vrf_name);
+	nb_cli_enqueue_change(vty, ".", NB_OP_CREATE, NULL);
+
+	ret = nb_cli_apply_changes(vty, base_xpath);
+	if (ret == CMD_SUCCESS)
+		VTY_PUSH_XPATH(ISIS_NODE, base_xpath);
+
+	return ret;
+}
+
+DEFPY_YANG(no_router_isis, no_router_isis_cmd,
+	   "no router isis WORD$tag [vrf NAME$vrf_name]",
+	   NO_STR ROUTER_STR
+	   "ISO IS-IS\n"
+	   "ISO Routing area tag\n" VRF_CMD_HELP_STR)
+{
+	if (!vrf_name)
+		vrf_name = VRF_DEFAULT_NAME;
+
+	if (!yang_dnode_existsf(
+		    vty->candidate_config->dnode,
+		    "/frr-isisd:isis/instance[area-tag='%s'][vrf='%s']", tag,
+		    vrf_name)) {
+		vty_out(vty, "ISIS area %s not found.\n", tag);
+		return CMD_ERR_NOTHING_TODO;
+	}
+
+	nb_cli_enqueue_change(vty, ".", NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes_clear_pending(
+		vty, "/frr-isisd:isis/instance[area-tag='%s'][vrf='%s']", tag,
+		vrf_name);
+}
+
+void cli_show_router_isis(struct vty *vty, const struct lyd_node *dnode,
+			  bool show_defaults)
+{
+	const char *vrf = NULL;
+
+	vrf = yang_dnode_get_string(dnode, "./vrf");
+
+	vty_out(vty, "!\n");
+	vty_out(vty, "router isis %s",
+		yang_dnode_get_string(dnode, "./area-tag"));
+	if (!strmatch(vrf, VRF_DEFAULT_NAME))
+		vty_out(vty, " vrf %s", yang_dnode_get_string(dnode, "./vrf"));
+	vty_out(vty, "\n");
+}
+
+void cli_show_router_isis_end(struct vty *vty, const struct lyd_node *dnode)
+{
+	vty_out(vty, "exit\n");
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/ipv4-routing
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/ipv6-routing
+ * XPath: /frr-isisd:isis/instance
+ */
+DEFPY_YANG(ip_router_isis, ip_router_isis_cmd,
+	   "ip router isis WORD$tag",
+	   "Interface Internet Protocol config commands\n"
+	   "IP router interface commands\n"
+	   "IS-IS routing protocol\n"
+	   "Routing process tag\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis", NB_OP_CREATE, NULL);
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/area-tag", NB_OP_MODIFY,
+			      tag);
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/ipv4-routing",
+			      NB_OP_MODIFY, "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+ALIAS_HIDDEN(ip_router_isis, ip_router_isis_vrf_cmd,
+	     "ip router isis WORD$tag vrf NAME$vrf_name",
+	     "Interface Internet Protocol config commands\n"
+	     "IP router interface commands\n"
+	     "IS-IS routing protocol\n"
+	     "Routing process tag\n" VRF_CMD_HELP_STR)
+
+DEFPY_YANG(ip6_router_isis, ip6_router_isis_cmd,
+	   "ipv6 router isis WORD$tag",
+	   "Interface Internet Protocol config commands\n"
+	   "IP router interface commands\n"
+	   "IS-IS routing protocol\n"
+	   "Routing process tag\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis", NB_OP_CREATE, NULL);
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/area-tag", NB_OP_MODIFY,
+			      tag);
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/ipv6-routing",
+			      NB_OP_MODIFY, "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+ALIAS_HIDDEN(ip6_router_isis, ip6_router_isis_vrf_cmd,
+	     "ipv6 router isis WORD$tag vrf NAME$vrf_name",
+	     "Interface Internet Protocol config commands\n"
+	     "IP router interface commands\n"
+	     "IS-IS routing protocol\n"
+	     "Routing process tag\n" VRF_CMD_HELP_STR)
+
+DEFPY_YANG(no_ip_router_isis, no_ip_router_isis_cmd,
+	   "no <ip|ipv6>$ip router isis [WORD]$tag",
+	   NO_STR
+	   "Interface Internet Protocol config commands\n"
+	   "IP router interface commands\n"
+	   "IP router interface commands\n"
+	   "IS-IS routing protocol\n"
+	   "Routing process tag\n")
+{
+	const struct lyd_node *dnode;
+
+	dnode = yang_dnode_getf(vty->candidate_config->dnode,
+				"%s/frr-isisd:isis", VTY_CURR_XPATH);
+	if (!dnode)
+		return CMD_SUCCESS;
+
+	/*
+	 * If both ipv4 and ipv6 are off delete the interface isis container.
+	 */
+	if (strmatch(ip, "ipv6")) {
+		if (!yang_dnode_get_bool(dnode, "./ipv4-routing"))
+			nb_cli_enqueue_change(vty, "./frr-isisd:isis",
+					      NB_OP_DESTROY, NULL);
+		else
+			nb_cli_enqueue_change(vty,
+					      "./frr-isisd:isis/ipv6-routing",
+					      NB_OP_MODIFY, "false");
+	} else {
+		if (!yang_dnode_get_bool(dnode, "./ipv6-routing"))
+			nb_cli_enqueue_change(vty, "./frr-isisd:isis",
+					      NB_OP_DESTROY, NULL);
+		else
+			nb_cli_enqueue_change(vty,
+					      "./frr-isisd:isis/ipv4-routing",
+					      NB_OP_MODIFY, "false");
+	}
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+ALIAS_HIDDEN(no_ip_router_isis, no_ip_router_isis_vrf_cmd,
+	     "no <ip|ipv6>$ip router isis WORD$tag vrf NAME$vrf_name",
+	     NO_STR
+	     "Interface Internet Protocol config commands\n"
+	     "IP router interface commands\n"
+	     "IP router interface commands\n"
+	     "IS-IS routing protocol\n"
+	     "Routing process tag\n"
+	     VRF_CMD_HELP_STR)
+
+void cli_show_ip_isis_ipv4(struct vty *vty, const struct lyd_node *dnode,
+			   bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " ip router isis %s\n",
+		yang_dnode_get_string(dnode, "../area-tag"));
+}
+
+void cli_show_ip_isis_ipv6(struct vty *vty, const struct lyd_node *dnode,
+			   bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " ipv6 router isis %s\n",
+		yang_dnode_get_string(dnode, "../area-tag"));
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/bfd-monitoring
+ */
+DEFPY_YANG(isis_bfd,
+      isis_bfd_cmd,
+      "[no] isis bfd",
+      NO_STR PROTO_HELP
+      "Enable BFD support\n")
+{
+	const struct lyd_node *dnode;
+
+	dnode = yang_dnode_getf(vty->candidate_config->dnode,
+				"%s/frr-isisd:isis", VTY_CURR_XPATH);
+	if (dnode == NULL) {
+		vty_out(vty, "ISIS is not enabled on this circuit\n");
+		return CMD_SUCCESS;
+	}
+
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/bfd-monitoring/enabled",
+			      NB_OP_MODIFY, no ? "false" : "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/bfd-monitoring/profile
+ */
+DEFPY_YANG(isis_bfd_profile,
+      isis_bfd_profile_cmd,
+      "[no] isis bfd profile BFDPROF$profile",
+      NO_STR PROTO_HELP
+      "Enable BFD support\n"
+      "Use a pre-configured profile\n"
+      "Profile name\n")
+{
+	const struct lyd_node *dnode;
+
+	dnode = yang_dnode_getf(vty->candidate_config->dnode,
+				"%s/frr-isisd:isis", VTY_CURR_XPATH);
+	if (dnode == NULL) {
+		vty_out(vty, "ISIS is not enabled on this circuit\n");
+		return CMD_SUCCESS;
+	}
+
+	if (no)
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/bfd-monitoring/profile",
+				      NB_OP_DESTROY, NULL);
+	else
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/bfd-monitoring/profile",
+				      NB_OP_MODIFY, profile);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_bfd_monitoring(struct vty *vty,
+				     const struct lyd_node *dnode,
+				     bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, "./enabled")) {
+		if (show_defaults)
+			vty_out(vty, " no isis bfd\n");
+	} else {
+		vty_out(vty, " isis bfd\n");
+	}
+
+	if (yang_dnode_exists(dnode, "./profile"))
+		vty_out(vty, " isis bfd profile %s\n",
+			yang_dnode_get_string(dnode, "./profile"));
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/area-address
+ */
+DEFPY_YANG(net, net_cmd, "[no] net WORD",
+      "Remove an existing Network Entity Title for this process\n"
+      "A Network Entity Title for this process (OSI only)\n"
+      "XX.XXXX. ... .XXX.XX  Network entity title (NET)\n")
+{
+	nb_cli_enqueue_change(vty, "./area-address",
+			      no ? NB_OP_DESTROY : NB_OP_CREATE, net);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_area_address(struct vty *vty, const struct lyd_node *dnode,
+				bool show_defaults)
+{
+	vty_out(vty, " net %s\n", yang_dnode_get_string(dnode, NULL));
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/is-type
+ */
+DEFPY_YANG(is_type, is_type_cmd, "is-type <level-1|level-1-2|level-2-only>$level",
+      "IS Level for this routing process (OSI only)\n"
+      "Act as a station router only\n"
+      "Act as both a station router and an area router\n"
+      "Act as an area router only\n")
+{
+	nb_cli_enqueue_change(vty, "./is-type", NB_OP_MODIFY,
+			      strmatch(level, "level-2-only") ? "level-2"
+							      : level);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_is_type, no_is_type_cmd,
+      "no is-type [<level-1|level-1-2|level-2-only>]",
+      NO_STR
+      "IS Level for this routing process (OSI only)\n"
+      "Act as a station router only\n"
+      "Act as both a station router and an area router\n"
+      "Act as an area router only\n")
+{
+	nb_cli_enqueue_change(vty, "./is-type", NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_is_type(struct vty *vty, const struct lyd_node *dnode,
+			   bool show_defaults)
+{
+	int is_type = yang_dnode_get_enum(dnode, NULL);
+
+	switch (is_type) {
+	case IS_LEVEL_1:
+		vty_out(vty, " is-type level-1\n");
+		break;
+	case IS_LEVEL_2:
+		vty_out(vty, " is-type level-2-only\n");
+		break;
+	case IS_LEVEL_1_AND_2:
+		vty_out(vty, " is-type level-1-2\n");
+		break;
+	}
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/dynamic-hostname
+ */
+DEFPY_YANG(dynamic_hostname, dynamic_hostname_cmd, "[no] hostname dynamic",
+      NO_STR
+      "Dynamic hostname for IS-IS\n"
+      "Dynamic hostname\n")
+{
+	nb_cli_enqueue_change(vty, "./dynamic-hostname", NB_OP_MODIFY,
+			      no ? "false" : "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_dynamic_hostname(struct vty *vty,
+				    const struct lyd_node *dnode,
+				    bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+
+	vty_out(vty, " hostname dynamic\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/overload
+ */
+DEFPY_YANG(set_overload_bit, set_overload_bit_cmd, "[no] set-overload-bit",
+      "Reset overload bit to accept transit traffic\n"
+      "Set overload bit to avoid any transit traffic\n")
+{
+	nb_cli_enqueue_change(vty, "./overload", NB_OP_MODIFY,
+			      no ? "false" : "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_overload(struct vty *vty, const struct lyd_node *dnode,
+			    bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " set-overload-bit\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/attach-send
+ */
+DEFPY_YANG(attached_bit_send, attached_bit_send_cmd, "[no] attached-bit send",
+	   "Reset attached bit\n"
+	   "Set attached bit for inter-area traffic\n"
+	   "Set attached bit in LSP sent to L1 router\n")
+{
+	nb_cli_enqueue_change(vty, "./attach-send", NB_OP_MODIFY,
+			      no ? "false" : "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_attached_send(struct vty *vty, const struct lyd_node *dnode,
+				 bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " attached-bit send\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/attach-receive-ignore
+ */
+DEFPY_YANG(
+	attached_bit_receive_ignore, attached_bit_receive_ignore_cmd,
+	"[no] attached-bit receive ignore",
+	"Reset attached bit\n"
+	"Set attach bit for inter-area traffic\n"
+	"If LSP received with attached bit set, create default route to neighbor\n"
+	"Do not process attached bit\n")
+{
+	nb_cli_enqueue_change(vty, "./attach-receive-ignore", NB_OP_MODIFY,
+			      no ? "false" : "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_attached_receive(struct vty *vty,
+				    const struct lyd_node *dnode,
+				    bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " attached-bit receive ignore\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/metric-style
+ */
+DEFPY_YANG(metric_style, metric_style_cmd,
+      "metric-style <narrow|transition|wide>$style",
+      "Use old-style (ISO 10589) or new-style packet formats\n"
+      "Use old style of TLVs with narrow metric\n"
+      "Send and accept both styles of TLVs during transition\n"
+      "Use new style of TLVs to carry wider metric\n")
+{
+	nb_cli_enqueue_change(vty, "./metric-style", NB_OP_MODIFY, style);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_metric_style, no_metric_style_cmd,
+      "no metric-style [narrow|transition|wide]",
+      NO_STR
+      "Use old-style (ISO 10589) or new-style packet formats\n"
+      "Use old style of TLVs with narrow metric\n"
+      "Send and accept both styles of TLVs during transition\n"
+      "Use new style of TLVs to carry wider metric\n")
+{
+	nb_cli_enqueue_change(vty, "./metric-style", NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_metric_style(struct vty *vty, const struct lyd_node *dnode,
+				bool show_defaults)
+{
+	int metric = yang_dnode_get_enum(dnode, NULL);
+
+	switch (metric) {
+	case ISIS_NARROW_METRIC:
+		vty_out(vty, " metric-style narrow\n");
+		break;
+	case ISIS_WIDE_METRIC:
+		vty_out(vty, " metric-style wide\n");
+		break;
+	case ISIS_TRANSITION_METRIC:
+		vty_out(vty, " metric-style transition\n");
+		break;
+	}
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/area-password
+ */
+DEFPY_YANG(area_passwd, area_passwd_cmd,
+      "area-password <clear|md5>$pwd_type WORD$pwd [authenticate snp <send-only|validate>$snp]",
+      "Configure the authentication password for an area\n"
+      "Clear-text authentication type\n"
+      "MD5 authentication type\n"
+      "Level-wide password\n"
+      "Authentication\n"
+      "SNP PDUs\n"
+      "Send but do not check PDUs on receiving\n"
+      "Send and check PDUs on receiving\n")
+{
+	nb_cli_enqueue_change(vty, "./area-password", NB_OP_CREATE, NULL);
+	nb_cli_enqueue_change(vty, "./area-password/password", NB_OP_MODIFY,
+			      pwd);
+	nb_cli_enqueue_change(vty, "./area-password/password-type",
+			      NB_OP_MODIFY, pwd_type);
+	nb_cli_enqueue_change(vty, "./area-password/authenticate-snp",
+			      NB_OP_MODIFY, snp ? snp : "none");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_area_pwd(struct vty *vty, const struct lyd_node *dnode,
+			    bool show_defaults)
+{
+	const char *snp;
+
+	vty_out(vty, " area-password %s %s",
+		yang_dnode_get_string(dnode, "./password-type"),
+		yang_dnode_get_string(dnode, "./password"));
+	snp = yang_dnode_get_string(dnode, "./authenticate-snp");
+	if (!strmatch("none", snp))
+		vty_out(vty, " authenticate snp %s", snp);
+	vty_out(vty, "\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/domain-password
+ */
+DEFPY_YANG(domain_passwd, domain_passwd_cmd,
+      "domain-password <clear|md5>$pwd_type WORD$pwd [authenticate snp <send-only|validate>$snp]",
+      "Set the authentication password for a routing domain\n"
+      "Clear-text authentication type\n"
+      "MD5 authentication type\n"
+      "Level-wide password\n"
+      "Authentication\n"
+      "SNP PDUs\n"
+      "Send but do not check PDUs on receiving\n"
+      "Send and check PDUs on receiving\n")
+{
+	nb_cli_enqueue_change(vty, "./domain-password", NB_OP_CREATE, NULL);
+	nb_cli_enqueue_change(vty, "./domain-password/password", NB_OP_MODIFY,
+			      pwd);
+	nb_cli_enqueue_change(vty, "./domain-password/password-type",
+			      NB_OP_MODIFY, pwd_type);
+	nb_cli_enqueue_change(vty, "./domain-password/authenticate-snp",
+			      NB_OP_MODIFY, snp ? snp : "none");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_area_passwd, no_area_passwd_cmd,
+      "no <area-password|domain-password>$cmd",
+      NO_STR
+      "Configure the authentication password for an area\n"
+      "Set the authentication password for a routing domain\n")
+{
+	nb_cli_enqueue_change(vty, ".", NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, "./%s", cmd);
+}
+
+void cli_show_isis_domain_pwd(struct vty *vty, const struct lyd_node *dnode,
+			      bool show_defaults)
+{
+	const char *snp;
+
+	vty_out(vty, " domain-password %s %s",
+		yang_dnode_get_string(dnode, "./password-type"),
+		yang_dnode_get_string(dnode, "./password"));
+	snp = yang_dnode_get_string(dnode, "./authenticate-snp");
+	if (!strmatch("none", snp))
+		vty_out(vty, " authenticate snp %s", snp);
+	vty_out(vty, "\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/lsp/timers/level-1/generation-interval
+ * XPath: /frr-isisd:isis/instance/lsp/timers/level-2/generation-interval
+ */
+DEFPY_YANG(lsp_gen_interval, lsp_gen_interval_cmd,
+      "lsp-gen-interval [level-1|level-2]$level (1-120)$val",
+      "Minimum interval between regenerating same LSP\n"
+      "Set interval for level 1 only\n"
+      "Set interval for level 2 only\n"
+      "Minimum interval in seconds\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(
+			vty, "./lsp/timers/level-1/generation-interval",
+			NB_OP_MODIFY, val_str);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(
+			vty, "./lsp/timers/level-2/generation-interval",
+			NB_OP_MODIFY, val_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_lsp_gen_interval, no_lsp_gen_interval_cmd,
+      "no lsp-gen-interval [level-1|level-2]$level [(1-120)]",
+      NO_STR
+      "Minimum interval between regenerating same LSP\n"
+      "Set interval for level 1 only\n"
+      "Set interval for level 2 only\n"
+      "Minimum interval in seconds\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(
+			vty, "./lsp/timers/level-1/generation-interval",
+			NB_OP_MODIFY, NULL);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(
+			vty, "./lsp/timers/level-2/generation-interval",
+			NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/lsp/timers/level-1/refresh-interval
+ * XPath: /frr-isisd:isis/instance/lsp/timers/level-2/refresh-interval
+ */
+DEFPY_YANG(lsp_refresh_interval, lsp_refresh_interval_cmd,
+      "lsp-refresh-interval [level-1|level-2]$level (1-65235)$val",
+      "LSP refresh interval\n"
+      "LSP refresh interval for Level 1 only\n"
+      "LSP refresh interval for Level 2 only\n"
+      "LSP refresh interval in seconds\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-1/refresh-interval",
+				      NB_OP_MODIFY, val_str);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-2/refresh-interval",
+				      NB_OP_MODIFY, val_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_lsp_refresh_interval, no_lsp_refresh_interval_cmd,
+      "no lsp-refresh-interval [level-1|level-2]$level [(1-65235)]",
+      NO_STR
+      "LSP refresh interval\n"
+      "LSP refresh interval for Level 1 only\n"
+      "LSP refresh interval for Level 2 only\n"
+      "LSP refresh interval in seconds\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-1/refresh-interval",
+				      NB_OP_MODIFY, NULL);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-2/refresh-interval",
+				      NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/lsp/timers/level-1/maximum-lifetime
+ * XPath: /frr-isisd:isis/instance/lsp/timers/level-1/maximum-lifetime
+ */
+
+DEFPY_YANG(max_lsp_lifetime, max_lsp_lifetime_cmd,
+      "max-lsp-lifetime [level-1|level-2]$level (350-65535)$val",
+      "Maximum LSP lifetime\n"
+      "Maximum LSP lifetime for Level 1 only\n"
+      "Maximum LSP lifetime for Level 2 only\n"
+      "LSP lifetime in seconds\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-1/maximum-lifetime",
+				      NB_OP_MODIFY, val_str);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-2/maximum-lifetime",
+				      NB_OP_MODIFY, val_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_max_lsp_lifetime, no_max_lsp_lifetime_cmd,
+      "no max-lsp-lifetime [level-1|level-2]$level [(350-65535)]",
+      NO_STR
+      "Maximum LSP lifetime\n"
+      "Maximum LSP lifetime for Level 1 only\n"
+      "Maximum LSP lifetime for Level 2 only\n"
+      "LSP lifetime in seconds\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-1/maximum-lifetime",
+				      NB_OP_MODIFY, NULL);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-2/maximum-lifetime",
+				      NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+/* unified LSP timers command
+ * XPath: /frr-isisd:isis/instance/lsp/timers
+ */
+
+DEFPY_YANG(lsp_timers, lsp_timers_cmd,
+      "lsp-timers [level-1|level-2]$level gen-interval (1-120)$gen refresh-interval (1-65235)$refresh max-lifetime (350-65535)$lifetime",
+      "LSP-related timers\n"
+      "LSP-related timers for Level 1 only\n"
+      "LSP-related timers for Level 2 only\n"
+      "Minimum interval between regenerating same LSP\n"
+      "Generation interval in seconds\n"
+      "LSP refresh interval\n"
+      "LSP refresh interval in seconds\n"
+      "Maximum LSP lifetime\n"
+      "Maximum LSP lifetime in seconds\n")
+{
+	if (!level || strmatch(level, "level-1")) {
+		nb_cli_enqueue_change(
+			vty, "./lsp/timers/level-1/generation-interval",
+			NB_OP_MODIFY, gen_str);
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-1/refresh-interval",
+				      NB_OP_MODIFY, refresh_str);
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-1/maximum-lifetime",
+				      NB_OP_MODIFY, lifetime_str);
+	}
+	if (!level || strmatch(level, "level-2")) {
+		nb_cli_enqueue_change(
+			vty, "./lsp/timers/level-2/generation-interval",
+			NB_OP_MODIFY, gen_str);
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-2/refresh-interval",
+				      NB_OP_MODIFY, refresh_str);
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-2/maximum-lifetime",
+				      NB_OP_MODIFY, lifetime_str);
+	}
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_lsp_timers, no_lsp_timers_cmd,
+      "no lsp-timers [level-1|level-2]$level [gen-interval (1-120) refresh-interval (1-65235) max-lifetime (350-65535)]",
+      NO_STR
+      "LSP-related timers\n"
+      "LSP-related timers for Level 1 only\n"
+      "LSP-related timers for Level 2 only\n"
+      "Minimum interval between regenerating same LSP\n"
+      "Generation interval in seconds\n"
+      "LSP refresh interval\n"
+      "LSP refresh interval in seconds\n"
+      "Maximum LSP lifetime\n"
+      "Maximum LSP lifetime in seconds\n")
+{
+	if (!level || strmatch(level, "level-1")) {
+		nb_cli_enqueue_change(
+			vty, "./lsp/timers/level-1/generation-interval",
+			NB_OP_MODIFY, NULL);
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-1/refresh-interval",
+				      NB_OP_MODIFY, NULL);
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-1/maximum-lifetime",
+				      NB_OP_MODIFY, NULL);
+	}
+	if (!level || strmatch(level, "level-2")) {
+		nb_cli_enqueue_change(
+			vty, "./lsp/timers/level-2/generation-interval",
+			NB_OP_MODIFY, NULL);
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-2/refresh-interval",
+				      NB_OP_MODIFY, NULL);
+		nb_cli_enqueue_change(vty,
+				      "./lsp/timers/level-2/maximum-lifetime",
+				      NB_OP_MODIFY, NULL);
+	}
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_lsp_timers(struct vty *vty, const struct lyd_node *dnode,
+			      bool show_defaults)
+{
+	const char *l1_refresh =
+		yang_dnode_get_string(dnode, "./level-1/refresh-interval");
+	const char *l2_refresh =
+		yang_dnode_get_string(dnode, "./level-2/refresh-interval");
+	const char *l1_lifetime =
+		yang_dnode_get_string(dnode, "./level-1/maximum-lifetime");
+	const char *l2_lifetime =
+		yang_dnode_get_string(dnode, "./level-2/maximum-lifetime");
+	const char *l1_gen =
+		yang_dnode_get_string(dnode, "./level-1/generation-interval");
+	const char *l2_gen =
+		yang_dnode_get_string(dnode, "./level-2/generation-interval");
+	if (strmatch(l1_refresh, l2_refresh)
+	    && strmatch(l1_lifetime, l2_lifetime) && strmatch(l1_gen, l2_gen))
+		vty_out(vty,
+			" lsp-timers gen-interval %s refresh-interval %s max-lifetime %s\n",
+			l1_gen, l1_refresh, l1_lifetime);
+	else {
+		vty_out(vty,
+			" lsp-timers level-1 gen-interval %s refresh-interval %s max-lifetime %s\n",
+			l1_gen, l1_refresh, l1_lifetime);
+		vty_out(vty,
+			" lsp-timers level-2 gen-interval %s refresh-interval %s max-lifetime %s\n",
+			l2_gen, l2_refresh, l2_lifetime);
+	}
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/lsp/mtu
+ */
+DEFPY_YANG(area_lsp_mtu, area_lsp_mtu_cmd, "lsp-mtu (128-4352)$val",
+      "Configure the maximum size of generated LSPs\n"
+      "Maximum size of generated LSPs\n")
+{
+	nb_cli_enqueue_change(vty, "./lsp/mtu", NB_OP_MODIFY, val_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_area_lsp_mtu, no_area_lsp_mtu_cmd, "no lsp-mtu [(128-4352)]",
+      NO_STR
+      "Configure the maximum size of generated LSPs\n"
+      "Maximum size of generated LSPs\n")
+{
+	nb_cli_enqueue_change(vty, "./lsp/mtu", NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_lsp_mtu(struct vty *vty, const struct lyd_node *dnode,
+			   bool show_defaults)
+{
+	vty_out(vty, " lsp-mtu %s\n", yang_dnode_get_string(dnode, NULL));
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/spf/minimum-interval
+ */
+DEFPY_YANG(spf_interval, spf_interval_cmd,
+      "spf-interval [level-1|level-2]$level (1-120)$val",
+      "Minimum interval between SPF calculations\n"
+      "Set interval for level 1 only\n"
+      "Set interval for level 2 only\n"
+      "Minimum interval between consecutive SPFs in seconds\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty, "./spf/minimum-interval/level-1",
+				      NB_OP_MODIFY, val_str);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty, "./spf/minimum-interval/level-2",
+				      NB_OP_MODIFY, val_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_spf_interval, no_spf_interval_cmd,
+      "no spf-interval [level-1|level-2]$level [(1-120)]",
+      NO_STR
+      "Minimum interval between SPF calculations\n"
+      "Set interval for level 1 only\n"
+      "Set interval for level 2 only\n"
+      "Minimum interval between consecutive SPFs in seconds\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty, "./spf/minimum-interval/level-1",
+				      NB_OP_MODIFY, NULL);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty, "./spf/minimum-interval/level-2",
+				      NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_spf_min_interval(struct vty *vty,
+				    const struct lyd_node *dnode,
+				    bool show_defaults)
+{
+	const char *l1 = yang_dnode_get_string(dnode, "./level-1");
+	const char *l2 = yang_dnode_get_string(dnode, "./level-2");
+
+	if (strmatch(l1, l2))
+		vty_out(vty, " spf-interval %s\n", l1);
+	else {
+		vty_out(vty, " spf-interval level-1 %s\n", l1);
+		vty_out(vty, " spf-interval level-2 %s\n", l2);
+	}
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/spf/ietf-backoff-delay
+ */
+DEFPY_YANG(spf_delay_ietf, spf_delay_ietf_cmd,
+      "spf-delay-ietf init-delay (0-60000) short-delay (0-60000) long-delay (0-60000) holddown (0-60000) time-to-learn (0-60000)",
+      "IETF SPF delay algorithm\n"
+      "Delay used while in QUIET state\n"
+      "Delay used while in QUIET state in milliseconds\n"
+      "Delay used while in SHORT_WAIT state\n"
+      "Delay used while in SHORT_WAIT state in milliseconds\n"
+      "Delay used while in LONG_WAIT\n"
+      "Delay used while in LONG_WAIT state in milliseconds\n"
+      "Time with no received IGP events before considering IGP stable\n"
+      "Time with no received IGP events before considering IGP stable (in milliseconds)\n"
+      "Maximum duration needed to learn all the events related to a single failure\n"
+      "Maximum duration needed to learn all the events related to a single failure (in milliseconds)\n")
+{
+	nb_cli_enqueue_change(vty, "./spf/ietf-backoff-delay", NB_OP_CREATE,
+			      NULL);
+	nb_cli_enqueue_change(vty, "./spf/ietf-backoff-delay/init-delay",
+			      NB_OP_MODIFY, init_delay_str);
+	nb_cli_enqueue_change(vty, "./spf/ietf-backoff-delay/short-delay",
+			      NB_OP_MODIFY, short_delay_str);
+	nb_cli_enqueue_change(vty, "./spf/ietf-backoff-delay/long-delay",
+			      NB_OP_MODIFY, long_delay_str);
+	nb_cli_enqueue_change(vty, "./spf/ietf-backoff-delay/hold-down",
+			      NB_OP_MODIFY, holddown_str);
+	nb_cli_enqueue_change(vty, "./spf/ietf-backoff-delay/time-to-learn",
+			      NB_OP_MODIFY, time_to_learn_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_spf_delay_ietf, no_spf_delay_ietf_cmd,
+      "no spf-delay-ietf [init-delay (0-60000) short-delay (0-60000) long-delay (0-60000) holddown (0-60000) time-to-learn (0-60000)]",
+      NO_STR
+      "IETF SPF delay algorithm\n"
+      "Delay used while in QUIET state\n"
+      "Delay used while in QUIET state in milliseconds\n"
+      "Delay used while in SHORT_WAIT state\n"
+      "Delay used while in SHORT_WAIT state in milliseconds\n"
+      "Delay used while in LONG_WAIT\n"
+      "Delay used while in LONG_WAIT state in milliseconds\n"
+      "Time with no received IGP events before considering IGP stable\n"
+      "Time with no received IGP events before considering IGP stable (in milliseconds)\n"
+      "Maximum duration needed to learn all the events related to a single failure\n"
+      "Maximum duration needed to learn all the events related to a single failure (in milliseconds)\n")
+{
+	nb_cli_enqueue_change(vty, "./spf/ietf-backoff-delay", NB_OP_DESTROY,
+			      NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_spf_ietf_backoff(struct vty *vty,
+				    const struct lyd_node *dnode,
+				    bool show_defaults)
+{
+	vty_out(vty,
+		" spf-delay-ietf init-delay %s short-delay %s long-delay %s holddown %s time-to-learn %s\n",
+		yang_dnode_get_string(dnode, "./init-delay"),
+		yang_dnode_get_string(dnode, "./short-delay"),
+		yang_dnode_get_string(dnode, "./long-delay"),
+		yang_dnode_get_string(dnode, "./hold-down"),
+		yang_dnode_get_string(dnode, "./time-to-learn"));
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/spf/prefix-priorities/medium/access-list-name
+ */
+DEFPY_YANG(spf_prefix_priority, spf_prefix_priority_cmd,
+      "spf prefix-priority <critical|high|medium>$priority ACCESSLIST_NAME$acl_name",
+      "SPF configuration\n"
+      "Configure a prefix priority list\n"
+      "Specify critical priority prefixes\n"
+      "Specify high priority prefixes\n"
+      "Specify medium priority prefixes\n"
+      "Access-list name\n")
+{
+	char xpath[XPATH_MAXLEN];
+
+	snprintf(xpath, XPATH_MAXLEN,
+		 "./spf/prefix-priorities/%s/access-list-name", priority);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, acl_name);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_spf_prefix_priority, no_spf_prefix_priority_cmd,
+      "no spf prefix-priority <critical|high|medium>$priority [ACCESSLIST_NAME]",
+      NO_STR
+      "SPF configuration\n"
+      "Configure a prefix priority list\n"
+      "Specify critical priority prefixes\n"
+      "Specify high priority prefixes\n"
+      "Specify medium priority prefixes\n"
+      "Access-list name\n")
+{
+	char xpath[XPATH_MAXLEN];
+
+	snprintf(xpath, XPATH_MAXLEN,
+		 "./spf/prefix-priorities/%s/access-list-name", priority);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_spf_prefix_priority(struct vty *vty,
+				       const struct lyd_node *dnode,
+				       bool show_defaults)
+{
+	vty_out(vty, " spf prefix-priority %s %s\n",
+		dnode->parent->schema->name,
+		yang_dnode_get_string(dnode, NULL));
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/purge-originator
+ */
+DEFPY_YANG(area_purge_originator, area_purge_originator_cmd, "[no] purge-originator",
+      NO_STR "Use the RFC 6232 purge-originator\n")
+{
+	nb_cli_enqueue_change(vty, "./purge-originator", NB_OP_MODIFY,
+			      no ? "false" : "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_purge_origin(struct vty *vty, const struct lyd_node *dnode,
+				bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " purge-originator\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/mpls-te
+ */
+DEFPY_YANG(isis_mpls_te_on, isis_mpls_te_on_cmd, "mpls-te on",
+      MPLS_TE_STR "Enable the MPLS-TE functionality\n")
+{
+	nb_cli_enqueue_change(vty, "./mpls-te", NB_OP_CREATE,
+			      NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_isis_mpls_te_on, no_isis_mpls_te_on_cmd, "no mpls-te [on]",
+      NO_STR
+      "Disable the MPLS-TE functionality\n"
+      "Disable the MPLS-TE functionality\n")
+{
+	nb_cli_enqueue_change(vty, "./mpls-te", NB_OP_DESTROY,
+			      NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_mpls_te(struct vty *vty, const struct lyd_node *dnode,
+			   bool show_defaults)
+{
+	vty_out(vty, " mpls-te on\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/mpls-te/router-address
+ */
+DEFPY_YANG(isis_mpls_te_router_addr, isis_mpls_te_router_addr_cmd,
+      "mpls-te router-address A.B.C.D",
+      MPLS_TE_STR
+      "Stable IP address of the advertising router\n"
+      "MPLS-TE router address in IPv4 address format\n")
+{
+	nb_cli_enqueue_change(vty, "./mpls-te/router-address",
+			      NB_OP_MODIFY, router_address_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_isis_mpls_te_router_addr, no_isis_mpls_te_router_addr_cmd,
+      "no mpls-te router-address [A.B.C.D]",
+      NO_STR MPLS_TE_STR
+      "Delete IP address of the advertising router\n"
+      "MPLS-TE router address in IPv4 address format\n")
+{
+	nb_cli_enqueue_change(vty, "./mpls-te/router-address",
+			      NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_mpls_te_router_addr(struct vty *vty,
+				       const struct lyd_node *dnode,
+				       bool show_defaults)
+{
+	vty_out(vty, " mpls-te router-address %s\n",
+		yang_dnode_get_string(dnode, NULL));
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/mpls-te/router-address-v6
+ */
+DEFPY_YANG(isis_mpls_te_router_addr_v6, isis_mpls_te_router_addr_v6_cmd,
+      "mpls-te router-address ipv6 X:X::X:X",
+      MPLS_TE_STR
+      "Stable IP address of the advertising router\n"
+      "IPv6 address\n"
+      "MPLS-TE router address in IPv6 address format\n")
+{
+	nb_cli_enqueue_change(vty, "./mpls-te/router-address-v6", NB_OP_MODIFY,
+			      ipv6_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_isis_mpls_te_router_addr_v6, no_isis_mpls_te_router_addr_v6_cmd,
+      "no mpls-te router-address ipv6 [X:X::X:X]",
+      NO_STR MPLS_TE_STR
+      "Delete IP address of the advertising router\n"
+      "IPv6 address\n"
+      "MPLS-TE router address in IPv6 address format\n")
+{
+	nb_cli_enqueue_change(vty, "./mpls-te/router-address-v6", NB_OP_DESTROY,
+			      NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_mpls_te_router_addr_ipv6(struct vty *vty,
+					    const struct lyd_node *dnode,
+					    bool show_defaults)
+{
+	vty_out(vty, " mpls-te router-address ipv6 %s\n",
+		yang_dnode_get_string(dnode, NULL));
+}
+
+DEFPY_YANG(isis_mpls_te_inter_as, isis_mpls_te_inter_as_cmd,
+      "[no] mpls-te inter-as [level-1|level-1-2|level-2-only]",
+      NO_STR MPLS_TE_STR
+      "Configure MPLS-TE Inter-AS support\n"
+      "AREA native mode self originate INTER-AS LSP with L1 only flooding scope\n"
+      "AREA native mode self originate INTER-AS LSP with L1 and L2 flooding scope\n"
+      "AS native mode self originate INTER-AS LSP with L2 only flooding scope\n")
+{
+	vty_out(vty, "MPLS-TE Inter-AS is not yet supported\n");
+	return CMD_SUCCESS;
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/mpls-te/export
+ */
+DEFPY_YANG(isis_mpls_te_export, isis_mpls_te_export_cmd, "mpls-te export",
+      MPLS_TE_STR "Enable export of MPLS-TE Link State information\n")
+{
+	nb_cli_enqueue_change(vty, "./mpls-te/export", NB_OP_MODIFY, "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_isis_mpls_te_export, no_isis_mpls_te_export_cmd,
+      "no mpls-te export",
+      NO_STR MPLS_TE_STR
+      "Disable export of MPLS-TE  Link State information\n")
+{
+	nb_cli_enqueue_change(vty, "./mpls-te/export", NB_OP_MODIFY, "false");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_mpls_te_export(struct vty *vty, const struct lyd_node *dnode,
+				  bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+
+	vty_out(vty, " mpls-te export\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/default-information-originate
+ */
+DEFPY_YANG(isis_default_originate, isis_default_originate_cmd,
+      "[no] default-information originate <ipv4|ipv6>$ip <level-1|level-2>$level [always]$always [{metric (0-16777215)$metric|route-map RMAP_NAME$rmap}]",
+      NO_STR
+      "Control distribution of default information\n"
+      "Distribute a default route\n"
+      "Distribute default route for IPv4\n"
+      "Distribute default route for IPv6\n"
+      "Distribute default route into level-1\n"
+      "Distribute default route into level-2\n"
+      "Always advertise default route\n"
+      "Metric for default route\n"
+      "IS-IS default metric\n"
+      "Route map reference\n"
+      "Pointer to route-map entries\n")
+{
+	if (no)
+		nb_cli_enqueue_change(vty, ".", NB_OP_DESTROY, NULL);
+	else {
+		nb_cli_enqueue_change(vty, ".", NB_OP_CREATE, NULL);
+		nb_cli_enqueue_change(vty, "./always", NB_OP_MODIFY,
+				      always ? "true" : "false");
+		nb_cli_enqueue_change(vty, "./route-map",
+				      rmap ? NB_OP_MODIFY : NB_OP_DESTROY,
+				      rmap ? rmap : NULL);
+		nb_cli_enqueue_change(vty, "./metric", NB_OP_MODIFY,
+				      metric_str ? metric_str : NULL);
+		if (strmatch(ip, "ipv6") && !always) {
+			vty_out(vty,
+				"Zebra doesn't implement default-originate for IPv6 yet\n");
+			vty_out(vty,
+				"so use with care or use default-originate always.\n");
+		}
+	}
+
+	return nb_cli_apply_changes(
+		vty, "./default-information-originate/%s[level='%s']", ip,
+		level);
+}
+
+static void vty_print_def_origin(struct vty *vty, const struct lyd_node *dnode,
+				 const char *family, const char *level,
+				 bool show_defaults)
+{
+	vty_out(vty, " default-information originate %s %s", family, level);
+	if (yang_dnode_get_bool(dnode, "./always"))
+		vty_out(vty, " always");
+
+	if (yang_dnode_exists(dnode, "./route-map"))
+		vty_out(vty, " route-map %s",
+			yang_dnode_get_string(dnode, "./route-map"));
+	if (show_defaults || !yang_dnode_is_default(dnode, "./metric"))
+		vty_out(vty, " metric %s",
+			yang_dnode_get_string(dnode, "./metric"));
+
+	vty_out(vty, "\n");
+}
+
+void cli_show_isis_def_origin_ipv4(struct vty *vty,
+				   const struct lyd_node *dnode,
+				   bool show_defaults)
+{
+	const char *level = yang_dnode_get_string(dnode, "./level");
+
+	vty_print_def_origin(vty, dnode, "ipv4", level, show_defaults);
+}
+
+void cli_show_isis_def_origin_ipv6(struct vty *vty,
+				   const struct lyd_node *dnode,
+				   bool show_defaults)
+{
+	const char *level = yang_dnode_get_string(dnode, "./level");
+
+	vty_print_def_origin(vty, dnode, "ipv6", level, show_defaults);
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/redistribute
+ */
+DEFPY_YANG(isis_redistribute, isis_redistribute_cmd,
+      "[no] redistribute <ipv4$ip " PROTO_IP_REDIST_STR "$proto|ipv6$ip "
+      PROTO_IP6_REDIST_STR "$proto> <level-1|level-2>$level"
+      "[{metric (0-16777215)|route-map RMAP_NAME$route_map}]",
+      NO_STR REDIST_STR
+      "Redistribute IPv4 routes\n"
+      PROTO_IP_REDIST_HELP
+      "Redistribute IPv6 routes\n"
+      PROTO_IP6_REDIST_HELP
+      "Redistribute into level-1\n"
+      "Redistribute into level-2\n"
+      "Metric for redistributed routes\n"
+      "IS-IS default metric\n"
+      "Route map reference\n"
+      "Pointer to route-map entries\n")
+{
+	if (no)
+		nb_cli_enqueue_change(vty, ".", NB_OP_DESTROY, NULL);
+	else {
+		nb_cli_enqueue_change(vty, ".", NB_OP_CREATE, NULL);
+		nb_cli_enqueue_change(vty, "./route-map",
+				      route_map ? NB_OP_MODIFY : NB_OP_DESTROY,
+				      route_map ? route_map : NULL);
+		nb_cli_enqueue_change(vty, "./metric", NB_OP_MODIFY,
+				      metric_str ? metric_str : NULL);
+	}
+
+	return nb_cli_apply_changes(
+		vty, "./redistribute/%s[protocol='%s'][level='%s']", ip, proto,
+		level);
+}
+
+static void vty_print_redistribute(struct vty *vty,
+				   const struct lyd_node *dnode,
+				   bool show_defaults, const char *family)
+{
+	const char *level = yang_dnode_get_string(dnode, "./level");
+	const char *protocol = yang_dnode_get_string(dnode, "./protocol");
+
+	vty_out(vty, " redistribute %s %s %s", family, protocol, level);
+	if (show_defaults || !yang_dnode_is_default(dnode, "./metric"))
+		vty_out(vty, " metric %s",
+			yang_dnode_get_string(dnode, "./metric"));
+	if (yang_dnode_exists(dnode, "./route-map"))
+		vty_out(vty, " route-map %s",
+			yang_dnode_get_string(dnode, "./route-map"));
+	vty_out(vty, "\n");
+}
+
+void cli_show_isis_redistribute_ipv4(struct vty *vty,
+				     const struct lyd_node *dnode,
+				     bool show_defaults)
+{
+	vty_print_redistribute(vty, dnode, show_defaults, "ipv4");
+}
+void cli_show_isis_redistribute_ipv6(struct vty *vty,
+				     const struct lyd_node *dnode,
+				     bool show_defaults)
+{
+	vty_print_redistribute(vty, dnode, show_defaults, "ipv6");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/multi-topology
+ */
+DEFPY_YANG(
+	isis_topology, isis_topology_cmd,
+	"[no] topology <standard|ipv4-unicast|ipv4-mgmt|ipv6-unicast|ipv4-multicast|ipv6-multicast|ipv6-mgmt|ipv6-dstsrc>$topology [overload]$overload",
+	NO_STR
+	"Configure IS-IS topologies\n"
+	"standard topology\n"
+	"IPv4 unicast topology\n"
+	"IPv4 management topology\n"
+	"IPv6 unicast topology\n"
+	"IPv4 multicast topology\n"
+	"IPv6 multicast topology\n"
+	"IPv6 management topology\n"
+	"IPv6 dst-src topology\n"
+	"Set overload bit for topology\n")
+{
+	char base_xpath[XPATH_MAXLEN];
+
+	/* Since standard is not configurable it is not present in the
+	 * YANG model, so we need to validate it here
+	 */
+	if (strmatch(topology, "standard") ||
+	    strmatch(topology, "ipv4-unicast")) {
+		vty_out(vty,
+			"Cannot configure IPv4 unicast (Standard) topology\n");
+		return CMD_WARNING_CONFIG_FAILED;
+	}
+
+	if (strmatch(topology, "ipv4-mgmt"))
+		snprintf(base_xpath, XPATH_MAXLEN,
+			 "./multi-topology/ipv4-management");
+	else if (strmatch(topology, "ipv6-mgmt"))
+		snprintf(base_xpath, XPATH_MAXLEN,
+			 "./multi-topology/ipv6-management");
+	else
+		snprintf(base_xpath, XPATH_MAXLEN, "./multi-topology/%s",
+			 topology);
+
+	if (no)
+		nb_cli_enqueue_change(vty, ".", NB_OP_DESTROY, NULL);
+	else {
+		nb_cli_enqueue_change(vty, ".", NB_OP_CREATE, NULL);
+		nb_cli_enqueue_change(vty, "./overload", NB_OP_MODIFY,
+				      overload ? "true" : "false");
+	}
+
+	return nb_cli_apply_changes(vty, base_xpath);
+}
+
+void cli_show_isis_mt_ipv4_multicast(struct vty *vty,
+				     const struct lyd_node *dnode,
+				     bool show_defaults)
+{
+	vty_out(vty, " topology ipv4-multicast");
+	if (yang_dnode_get_bool(dnode, "./overload"))
+		vty_out(vty, " overload");
+	vty_out(vty, "\n");
+}
+
+void cli_show_isis_mt_ipv4_mgmt(struct vty *vty, const struct lyd_node *dnode,
+				bool show_defaults)
+{
+	vty_out(vty, " topology ipv4-mgmt");
+	if (yang_dnode_get_bool(dnode, "./overload"))
+		vty_out(vty, " overload");
+	vty_out(vty, "\n");
+}
+
+void cli_show_isis_mt_ipv6_unicast(struct vty *vty,
+				   const struct lyd_node *dnode,
+				   bool show_defaults)
+{
+	vty_out(vty, " topology ipv6-unicast");
+	if (yang_dnode_get_bool(dnode, "./overload"))
+		vty_out(vty, " overload");
+	vty_out(vty, "\n");
+}
+
+void cli_show_isis_mt_ipv6_multicast(struct vty *vty,
+				     const struct lyd_node *dnode,
+				     bool show_defaults)
+{
+	vty_out(vty, " topology ipv6-multicast");
+	if (yang_dnode_get_bool(dnode, "./overload"))
+		vty_out(vty, " overload");
+	vty_out(vty, "\n");
+}
+
+void cli_show_isis_mt_ipv6_mgmt(struct vty *vty, const struct lyd_node *dnode,
+				bool show_defaults)
+{
+	vty_out(vty, " topology ipv6-mgmt");
+	if (yang_dnode_get_bool(dnode, "./overload"))
+		vty_out(vty, " overload");
+	vty_out(vty, "\n");
+}
+
+void cli_show_isis_mt_ipv6_dstsrc(struct vty *vty, const struct lyd_node *dnode,
+				  bool show_defaults)
+{
+	vty_out(vty, " topology ipv6-dstsrc");
+	if (yang_dnode_get_bool(dnode, "./overload"))
+		vty_out(vty, " overload");
+	vty_out(vty, "\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/segment-routing/enabled
+ */
+DEFPY_YANG (isis_sr_enable,
+       isis_sr_enable_cmd,
+       "segment-routing on",
+       SR_STR
+       "Enable Segment Routing\n")
+{
+	nb_cli_enqueue_change(vty, "./segment-routing/enabled", NB_OP_MODIFY,
+			      "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG (no_isis_sr_enable,
+       no_isis_sr_enable_cmd,
+       "no segment-routing [on]",
+       NO_STR
+       SR_STR
+       "Disable Segment Routing\n")
+{
+	nb_cli_enqueue_change(vty, "./segment-routing/enabled", NB_OP_MODIFY,
+			      "false");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_sr_enabled(struct vty *vty, const struct lyd_node *dnode,
+			      bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+
+	vty_out(vty, " segment-routing on\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/segment-routing/label-block
+ */
+
+DEFPY_YANG(
+	isis_sr_global_block_label_range, isis_sr_global_block_label_range_cmd,
+	"segment-routing global-block (16-1048575)$gb_lower_bound (16-1048575)$gb_upper_bound [local-block (16-1048575)$lb_lower_bound (16-1048575)$lb_upper_bound]",
+	SR_STR
+	"Segment Routing Global Block label range\n"
+	"The lower bound of the global block\n"
+	"The upper bound of the global block (block size may not exceed 65535)\n"
+	"Segment Routing Local Block label range\n"
+	"The lower bound of the local block\n"
+	"The upper bound of the local block (block size may not exceed 65535)\n")
+{
+	nb_cli_enqueue_change(vty,
+			      "./segment-routing/label-blocks/srgb/lower-bound",
+			      NB_OP_MODIFY, gb_lower_bound_str);
+	nb_cli_enqueue_change(vty,
+			      "./segment-routing/label-blocks/srgb/upper-bound",
+			      NB_OP_MODIFY, gb_upper_bound_str);
+
+	nb_cli_enqueue_change(
+		vty, "./segment-routing/label-blocks/srlb/lower-bound",
+		NB_OP_MODIFY, lb_lower_bound ? lb_lower_bound_str : NULL);
+	nb_cli_enqueue_change(
+		vty, "./segment-routing/label-blocks/srlb/upper-bound",
+		NB_OP_MODIFY, lb_upper_bound ? lb_upper_bound_str : NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_isis_sr_global_block_label_range,
+	no_isis_sr_global_block_label_range_cmd,
+	"no segment-routing global-block [(16-1048575) (16-1048575) local-block (16-1048575) (16-1048575)]",
+	NO_STR SR_STR
+	"Segment Routing Global Block label range\n"
+	"The lower bound of the global block\n"
+	"The upper bound of the global block (block size may not exceed 65535)\n"
+	"Segment Routing Local Block label range\n"
+	"The lower bound of the local block\n"
+	"The upper bound of the local block (block size may not exceed 65535)\n")
+{
+	nb_cli_enqueue_change(vty,
+			      "./segment-routing/label-blocks/srgb/lower-bound",
+			      NB_OP_MODIFY, NULL);
+	nb_cli_enqueue_change(vty,
+			      "./segment-routing/label-blocks/srgb/upper-bound",
+			      NB_OP_MODIFY, NULL);
+	nb_cli_enqueue_change(vty,
+			      "./segment-routing/label-blocks/srlb/lower-bound",
+			      NB_OP_MODIFY, NULL);
+	nb_cli_enqueue_change(vty,
+			      "./segment-routing/label-blocks/srlb/upper-bound",
+			      NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_label_blocks(struct vty *vty, const struct lyd_node *dnode,
+				bool show_defaults)
+{
+	vty_out(vty, " segment-routing global-block %s %s",
+		yang_dnode_get_string(dnode, "./srgb/lower-bound"),
+		yang_dnode_get_string(dnode, "./srgb/upper-bound"));
+	if (!yang_dnode_is_default(dnode, "./srlb/lower-bound")
+	    || !yang_dnode_is_default(dnode, "./srlb/upper-bound"))
+		vty_out(vty, " local-block %s %s",
+			yang_dnode_get_string(dnode, "./srlb/lower-bound"),
+			yang_dnode_get_string(dnode, "./srlb/upper-bound"));
+	vty_out(vty, "\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/segment-routing/msd/node-msd
+ */
+DEFPY_YANG (isis_sr_node_msd,
+       isis_sr_node_msd_cmd,
+       "segment-routing node-msd (1-16)$msd",
+       SR_STR
+       "Maximum Stack Depth for this router\n"
+       "Maximum number of label that can be stack (1-16)\n")
+{
+	nb_cli_enqueue_change(vty, "./segment-routing/msd/node-msd",
+			      NB_OP_MODIFY, msd_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG (no_isis_sr_node_msd,
+       no_isis_sr_node_msd_cmd,
+       "no segment-routing node-msd [(1-16)]",
+       NO_STR
+       SR_STR
+       "Maximum Stack Depth for this router\n"
+       "Maximum number of label that can be stack (1-16)\n")
+{
+	nb_cli_enqueue_change(vty, "./segment-routing/msd/node-msd",
+			      NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_node_msd(struct vty *vty, const struct lyd_node *dnode,
+			    bool show_defaults)
+{
+	vty_out(vty, " segment-routing node-msd %s\n",
+		yang_dnode_get_string(dnode, NULL));
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/segment-routing/prefix-sid-map/prefix-sid
+ */
+DEFPY_YANG (isis_sr_prefix_sid,
+       isis_sr_prefix_sid_cmd,
+       "segment-routing prefix\
+          <A.B.C.D/M|X:X::X:X/M>$prefix\
+	  <absolute$sid_type (16-1048575)$sid_value|index$sid_type (0-65535)$sid_value>\
+	  [<no-php-flag|explicit-null>$lh_behavior] [n-flag-clear$n_flag_clear]",
+       SR_STR
+       "Prefix SID\n"
+       "IPv4 Prefix\n"
+       "IPv6 Prefix\n"
+       "Specify the absolute value of Prefix Segment ID\n"
+       "The Prefix Segment ID value\n"
+       "Specify the index of Prefix Segment ID\n"
+       "The Prefix Segment ID index\n"
+       "Don't request Penultimate Hop Popping (PHP)\n"
+       "Upstream neighbor must replace prefix-sid with explicit null label\n"
+       "Not a node SID\n")
+{
+	nb_cli_enqueue_change(vty, ".", NB_OP_CREATE, NULL);
+	nb_cli_enqueue_change(vty, "./sid-value-type", NB_OP_MODIFY, sid_type);
+	nb_cli_enqueue_change(vty, "./sid-value", NB_OP_MODIFY, sid_value_str);
+	if (lh_behavior) {
+		const char *value;
+
+		if (strmatch(lh_behavior, "no-php-flag"))
+			value = "no-php";
+		else if (strmatch(lh_behavior, "explicit-null"))
+			value = "explicit-null";
+		else
+			value = "php";
+
+		nb_cli_enqueue_change(vty, "./last-hop-behavior", NB_OP_MODIFY,
+				      value);
+	} else
+		nb_cli_enqueue_change(vty, "./last-hop-behavior", NB_OP_MODIFY,
+				      NULL);
+	nb_cli_enqueue_change(vty, "./n-flag-clear", NB_OP_MODIFY,
+			      n_flag_clear ? "true" : "false");
+
+	return nb_cli_apply_changes(
+		vty, "./segment-routing/prefix-sid-map/prefix-sid[prefix='%s']",
+		prefix_str);
+}
+
+DEFPY_YANG (no_isis_sr_prefix_sid,
+       no_isis_sr_prefix_sid_cmd,
+       "no segment-routing prefix <A.B.C.D/M|X:X::X:X/M>$prefix\
+         [<absolute$sid_type (16-1048575)|index (0-65535)> [<no-php-flag|explicit-null>]]\
+	 [n-flag-clear]",
+       NO_STR
+       SR_STR
+       "Prefix SID\n"
+       "IPv4 Prefix\n"
+       "IPv6 Prefix\n"
+       "Specify the absolute value of Prefix Segment ID\n"
+       "The Prefix Segment ID value\n"
+       "Specify the index of Prefix Segment ID\n"
+       "The Prefix Segment ID index\n"
+       "Don't request Penultimate Hop Popping (PHP)\n"
+       "Upstream neighbor must replace prefix-sid with explicit null label\n"
+       "Not a node SID\n")
+{
+	nb_cli_enqueue_change(vty, ".", NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(
+		vty, "./segment-routing/prefix-sid-map/prefix-sid[prefix='%s']",
+		prefix_str);
+}
+
+void cli_show_isis_prefix_sid(struct vty *vty, const struct lyd_node *dnode,
+			      bool show_defaults)
+{
+	const char *prefix;
+	const char *lh_behavior;
+	const char *sid_value_type;
+	const char *sid_value;
+	bool n_flag_clear;
+
+	prefix = yang_dnode_get_string(dnode, "./prefix");
+	lh_behavior = yang_dnode_get_string(dnode, "./last-hop-behavior");
+	sid_value_type = yang_dnode_get_string(dnode, "./sid-value-type");
+	sid_value = yang_dnode_get_string(dnode, "./sid-value");
+	n_flag_clear = yang_dnode_get_bool(dnode, "./n-flag-clear");
+
+	vty_out(vty, " segment-routing prefix %s", prefix);
+	if (strmatch(sid_value_type, "absolute"))
+		vty_out(vty, " absolute");
+	else
+		vty_out(vty, " index");
+	vty_out(vty, " %s", sid_value);
+	if (strmatch(lh_behavior, "no-php"))
+		vty_out(vty, " no-php-flag");
+	else if (strmatch(lh_behavior, "explicit-null"))
+		vty_out(vty, " explicit-null");
+	if (n_flag_clear)
+		vty_out(vty, " n-flag-clear");
+	vty_out(vty, "\n");
+}
+
+
+/*
+ * XPath: /frr-isisd:isis/instance/fast-reroute/level-{1,2}/lfa/priority-limit
+ */
+DEFPY_YANG (isis_frr_lfa_priority_limit,
+       isis_frr_lfa_priority_limit_cmd,
+       "[no] fast-reroute priority-limit <critical|high|medium>$priority [<level-1|level-2>$level]",
+       NO_STR
+       "Configure Fast ReRoute\n"
+       "Limit backup computation up to the prefix priority\n"
+       "Compute for critical priority prefixes only\n"
+       "Compute for critical & high priority prefixes\n"
+       "Compute for critical, high & medium priority prefixes\n"
+       "Set priority-limit for level-1 only\n"
+       "Set priority-limit for level-2 only\n")
+{
+	if (!level || strmatch(level, "level-1")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty,
+				"./fast-reroute/level-1/lfa/priority-limit",
+				NB_OP_DESTROY, NULL);
+		} else {
+			nb_cli_enqueue_change(
+				vty,
+				"./fast-reroute/level-1/lfa/priority-limit",
+				NB_OP_CREATE, priority);
+		}
+	}
+	if (!level || strmatch(level, "level-2")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty,
+				"./fast-reroute/level-2/lfa/priority-limit",
+				NB_OP_DESTROY, NULL);
+		} else {
+			nb_cli_enqueue_change(
+				vty,
+				"./fast-reroute/level-2/lfa/priority-limit",
+				NB_OP_CREATE, priority);
+		}
+	}
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_frr_lfa_priority_limit(struct vty *vty,
+					  const struct lyd_node *dnode,
+					  bool show_defaults)
+{
+	vty_out(vty, " fast-reroute priority-limit %s %s\n",
+		yang_dnode_get_string(dnode, NULL),
+		dnode->parent->parent->schema->name);
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/fast-reroute/level-{1,2}/lfa/tiebreaker
+ */
+DEFPY_YANG (isis_frr_lfa_tiebreaker,
+       isis_frr_lfa_tiebreaker_cmd,
+       "[no] fast-reroute lfa\
+          tiebreaker <downstream|lowest-backup-metric|node-protecting>$type\
+	  index (1-255)$index\
+	  [<level-1|level-2>$level]",
+       NO_STR
+       "Configure Fast ReRoute\n"
+       "LFA configuration\n"
+       "Configure tiebreaker for multiple backups\n"
+       "Prefer backup path via downstream node\n"
+       "Prefer backup path with lowest total metric\n"
+       "Prefer node protecting backup path\n"
+       "Set preference order among tiebreakers\n"
+       "Index\n"
+       "Configure tiebreaker for level-1 only\n"
+       "Configure tiebreaker for level-2 only\n")
+{
+	char xpath[XPATH_MAXLEN];
+
+	if (!level || strmatch(level, "level-1")) {
+		if (no) {
+			snprintf(
+				xpath, XPATH_MAXLEN,
+				"./fast-reroute/level-1/lfa/tiebreaker[index='%s']",
+				index_str);
+			nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, NULL);
+		} else {
+			snprintf(
+				xpath, XPATH_MAXLEN,
+				"./fast-reroute/level-1/lfa/tiebreaker[index='%s']/type",
+				index_str);
+			nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, type);
+		}
+	}
+	if (!level || strmatch(level, "level-2")) {
+		if (no) {
+			snprintf(
+				xpath, XPATH_MAXLEN,
+				"./fast-reroute/level-2/lfa/tiebreaker[index='%s']",
+				index_str);
+			nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, NULL);
+		} else {
+			snprintf(
+				xpath, XPATH_MAXLEN,
+				"./fast-reroute/level-2/lfa/tiebreaker[index='%s']/type",
+				index_str);
+			nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, type);
+		}
+	}
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_frr_lfa_tiebreaker(struct vty *vty,
+				      const struct lyd_node *dnode,
+				      bool show_defaults)
+{
+	vty_out(vty, " fast-reroute lfa tiebreaker %s index %s %s\n",
+		yang_dnode_get_string(dnode, "./type"),
+		yang_dnode_get_string(dnode, "./index"),
+		dnode->parent->parent->schema->name);
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/fast-reroute/level-{1,2}/lfa/load-sharing
+ */
+DEFPY_YANG (isis_frr_lfa_load_sharing,
+       isis_frr_lfa_load_sharing_cmd,
+       "[no] fast-reroute load-sharing disable [<level-1|level-2>$level]",
+       NO_STR
+       "Configure Fast ReRoute\n"
+       "Load share prefixes across multiple backups\n"
+       "Disable load sharing\n"
+       "Disable load sharing for level-1 only\n"
+       "Disable load sharing for level-2 only\n")
+{
+	if (!level || strmatch(level, "level-1")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty, "./fast-reroute/level-1/lfa/load-sharing",
+				NB_OP_MODIFY, "true");
+		} else {
+			nb_cli_enqueue_change(
+				vty, "./fast-reroute/level-1/lfa/load-sharing",
+				NB_OP_MODIFY, "false");
+		}
+	}
+	if (!level || strmatch(level, "level-2")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty, "./fast-reroute/level-2/lfa/load-sharing",
+				NB_OP_MODIFY, "true");
+		} else {
+			nb_cli_enqueue_change(
+				vty, "./fast-reroute/level-2/lfa/load-sharing",
+				NB_OP_MODIFY, "false");
+		}
+	}
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_frr_lfa_load_sharing(struct vty *vty,
+					const struct lyd_node *dnode,
+					bool show_defaults)
+{
+	if (yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+
+	vty_out(vty, " fast-reroute load-sharing disable %s\n",
+		dnode->parent->parent->schema->name);
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/fast-reroute/level-{1,2}/remote-lfa/prefix-list
+ */
+DEFPY_YANG (isis_frr_remote_lfa_plist,
+       isis_frr_remote_lfa_plist_cmd,
+       "fast-reroute remote-lfa prefix-list WORD$plist [<level-1|level-2>$level]",
+       "Configure Fast ReRoute\n"
+       "Enable remote LFA related configuration\n"
+       "Filter PQ node router ID based on prefix list\n"
+       "Prefix-list name\n"
+       "Enable router ID filtering for level-1 only\n"
+       "Enable router ID filtering for level-2 only\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(
+			vty, "./fast-reroute/level-1/remote-lfa/prefix-list",
+			NB_OP_MODIFY, plist);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(
+			vty, "./fast-reroute/level-2/remote-lfa/prefix-list",
+			NB_OP_MODIFY, plist);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG (no_isis_frr_remote_lfa_plist,
+       no_isis_frr_remote_lfa_plist_cmd,
+       "no fast-reroute remote-lfa prefix-list [WORD] [<level-1|level-2>$level]",
+       NO_STR
+       "Configure Fast ReRoute\n"
+       "Enable remote LFA related configuration\n"
+       "Filter PQ node router ID based on prefix list\n"
+       "Prefix-list name\n"
+       "Enable router ID filtering for level-1 only\n"
+       "Enable router ID filtering for level-2 only\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(
+			vty, "./fast-reroute/level-1/remote-lfa/prefix-list",
+			NB_OP_DESTROY, NULL);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(
+			vty, "./fast-reroute/level-2/remote-lfa/prefix-list",
+			NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_frr_remote_lfa_plist(struct vty *vty,
+					const struct lyd_node *dnode,
+					bool show_defaults)
+{
+	vty_out(vty, " fast-reroute remote-lfa prefix-list %s %s\n",
+		yang_dnode_get_string(dnode, NULL),
+		dnode->parent->parent->schema->name);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/passive
+ */
+DEFPY_YANG(isis_passive, isis_passive_cmd, "[no] isis passive",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Configure the passive mode for interface\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/passive", NB_OP_MODIFY,
+			      no ? "false" : "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_passive(struct vty *vty, const struct lyd_node *dnode,
+			      bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " isis passive\n");
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/password
+ */
+
+DEFPY_YANG(isis_passwd, isis_passwd_cmd, "isis password <md5|clear>$type WORD$pwd",
+      "IS-IS routing protocol\n"
+      "Configure the authentication password for a circuit\n"
+      "HMAC-MD5 authentication\n"
+      "Cleartext password\n"
+      "Circuit password\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/password", NB_OP_CREATE,
+			      NULL);
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/password/password",
+			      NB_OP_MODIFY, pwd);
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/password/password-type",
+			      NB_OP_MODIFY, type);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_isis_passwd, no_isis_passwd_cmd, "no isis password [<md5|clear> WORD]",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Configure the authentication password for a circuit\n"
+      "HMAC-MD5 authentication\n"
+      "Cleartext password\n"
+      "Circuit password\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/password", NB_OP_DESTROY,
+			      NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_password(struct vty *vty, const struct lyd_node *dnode,
+			       bool show_defaults)
+{
+	vty_out(vty, " isis password %s %s\n",
+		yang_dnode_get_string(dnode, "./password-type"),
+		yang_dnode_get_string(dnode, "./password"));
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/metric
+ */
+DEFPY_YANG(isis_metric, isis_metric_cmd,
+      "isis metric [level-1|level-2]$level (0-16777215)$met",
+      "IS-IS routing protocol\n"
+      "Set default metric for circuit\n"
+      "Specify metric for level-1 routing\n"
+      "Specify metric for level-2 routing\n"
+      "Default metric value\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty, "./frr-isisd:isis/metric/level-1",
+				      NB_OP_MODIFY, met_str);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty, "./frr-isisd:isis/metric/level-2",
+				      NB_OP_MODIFY, met_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_isis_metric, no_isis_metric_cmd,
+      "no isis metric [level-1|level-2]$level [(0-16777215)]",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Set default metric for circuit\n"
+      "Specify metric for level-1 routing\n"
+      "Specify metric for level-2 routing\n"
+      "Default metric value\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty, "./frr-isisd:isis/metric/level-1",
+				      NB_OP_MODIFY, NULL);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty, "./frr-isisd:isis/metric/level-2",
+				      NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_metric(struct vty *vty, const struct lyd_node *dnode,
+			     bool show_defaults)
+{
+	const char *l1 = yang_dnode_get_string(dnode, "./level-1");
+	const char *l2 = yang_dnode_get_string(dnode, "./level-2");
+
+	if (strmatch(l1, l2))
+		vty_out(vty, " isis metric %s\n", l1);
+	else {
+		vty_out(vty, " isis metric level-1 %s\n", l1);
+		vty_out(vty, " isis metric level-2 %s\n", l2);
+	}
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/hello/interval
+ */
+DEFPY_YANG(isis_hello_interval, isis_hello_interval_cmd,
+      "isis hello-interval [level-1|level-2]$level (1-600)$intv",
+      "IS-IS routing protocol\n"
+      "Set Hello interval\n"
+      "Specify hello-interval for level-1 IIHs\n"
+      "Specify hello-interval for level-2 IIHs\n"
+      "Holdtime 1 seconds, interval depends on multiplier\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/hello/interval/level-1",
+				      NB_OP_MODIFY, intv_str);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/hello/interval/level-2",
+				      NB_OP_MODIFY, intv_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_isis_hello_interval, no_isis_hello_interval_cmd,
+      "no isis hello-interval [level-1|level-2]$level [(1-600)]",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Set Hello interval\n"
+      "Specify hello-interval for level-1 IIHs\n"
+      "Specify hello-interval for level-2 IIHs\n"
+      "Holdtime 1 second, interval depends on multiplier\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/hello/interval/level-1",
+				      NB_OP_MODIFY, NULL);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/hello/interval/level-2",
+				      NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_hello_interval(struct vty *vty,
+				     const struct lyd_node *dnode,
+				     bool show_defaults)
+{
+	const char *l1 = yang_dnode_get_string(dnode, "./level-1");
+	const char *l2 = yang_dnode_get_string(dnode, "./level-2");
+
+	if (strmatch(l1, l2))
+		vty_out(vty, " isis hello-interval %s\n", l1);
+	else {
+		vty_out(vty, " isis hello-interval level-1 %s\n", l1);
+		vty_out(vty, " isis hello-interval level-2 %s\n", l2);
+	}
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/hello/multiplier
+ */
+DEFPY_YANG(isis_hello_multiplier, isis_hello_multiplier_cmd,
+      "isis hello-multiplier [level-1|level-2]$level (2-100)$mult",
+      "IS-IS routing protocol\n"
+      "Set multiplier for Hello holding time\n"
+      "Specify hello multiplier for level-1 IIHs\n"
+      "Specify hello multiplier for level-2 IIHs\n"
+      "Hello multiplier value\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(
+			vty, "./frr-isisd:isis/hello/multiplier/level-1",
+			NB_OP_MODIFY, mult_str);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(
+			vty, "./frr-isisd:isis/hello/multiplier/level-2",
+			NB_OP_MODIFY, mult_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_isis_hello_multiplier, no_isis_hello_multiplier_cmd,
+      "no isis hello-multiplier [level-1|level-2]$level [(2-100)]",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Set multiplier for Hello holding time\n"
+      "Specify hello multiplier for level-1 IIHs\n"
+      "Specify hello multiplier for level-2 IIHs\n"
+      "Hello multiplier value\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(
+			vty, "./frr-isisd:isis/hello/multiplier/level-1",
+			NB_OP_MODIFY, NULL);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(
+			vty, "./frr-isisd:isis/hello/multiplier/level-2",
+			NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_hello_multi(struct vty *vty, const struct lyd_node *dnode,
+				  bool show_defaults)
+{
+	const char *l1 = yang_dnode_get_string(dnode, "./level-1");
+	const char *l2 = yang_dnode_get_string(dnode, "./level-2");
+
+	if (strmatch(l1, l2))
+		vty_out(vty, " isis hello-multiplier %s\n", l1);
+	else {
+		vty_out(vty, " isis hello-multiplier level-1 %s\n", l1);
+		vty_out(vty, " isis hello-multiplier level-2 %s\n", l2);
+	}
+}
+
+/*
+ * XPath:
+ * /frr-interface:lib/interface/frr-isisd:isis/disable-three-way-handshake
+ */
+DEFPY_YANG(isis_threeway_adj, isis_threeway_adj_cmd, "[no] isis three-way-handshake",
+      NO_STR
+      "IS-IS commands\n"
+      "Enable/Disable three-way handshake\n")
+{
+	nb_cli_enqueue_change(vty,
+			      "./frr-isisd:isis/disable-three-way-handshake",
+			      NB_OP_MODIFY, no ? "true" : "false");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_threeway_shake(struct vty *vty,
+				     const struct lyd_node *dnode,
+				     bool show_defaults)
+{
+	if (yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " isis three-way-handshake\n");
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/hello/padding
+ */
+DEFPY_YANG(isis_hello_padding, isis_hello_padding_cmd, "[no] isis hello padding",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Add padding to IS-IS hello packets\n"
+      "Pad hello packets\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/hello/padding",
+			      NB_OP_MODIFY, no ? "false" : "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_hello_padding(struct vty *vty,
+				    const struct lyd_node *dnode,
+				    bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+
+	vty_out(vty, " isis hello padding\n");
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/csnp-interval
+ */
+DEFPY_YANG(csnp_interval, csnp_interval_cmd,
+      "isis csnp-interval (1-600)$intv [level-1|level-2]$level",
+      "IS-IS routing protocol\n"
+      "Set CSNP interval in seconds\n"
+      "CSNP interval value\n"
+      "Specify interval for level-1 CSNPs\n"
+      "Specify interval for level-2 CSNPs\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/csnp-interval/level-1",
+				      NB_OP_MODIFY, intv_str);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/csnp-interval/level-2",
+				      NB_OP_MODIFY, intv_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_csnp_interval, no_csnp_interval_cmd,
+      "no isis csnp-interval [(1-600)] [level-1|level-2]$level",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Set CSNP interval in seconds\n"
+      "CSNP interval value\n"
+      "Specify interval for level-1 CSNPs\n"
+      "Specify interval for level-2 CSNPs\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/csnp-interval/level-1",
+				      NB_OP_MODIFY, NULL);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/csnp-interval/level-2",
+				      NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_csnp_interval(struct vty *vty,
+				    const struct lyd_node *dnode,
+				    bool show_defaults)
+{
+	const char *l1 = yang_dnode_get_string(dnode, "./level-1");
+	const char *l2 = yang_dnode_get_string(dnode, "./level-2");
+
+	if (strmatch(l1, l2))
+		vty_out(vty, " isis csnp-interval %s\n", l1);
+	else {
+		vty_out(vty, " isis csnp-interval %s level-1\n", l1);
+		vty_out(vty, " isis csnp-interval %s level-2\n", l2);
+	}
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/psnp-interval
+ */
+DEFPY_YANG(psnp_interval, psnp_interval_cmd,
+      "isis psnp-interval (1-120)$intv [level-1|level-2]$level",
+      "IS-IS routing protocol\n"
+      "Set PSNP interval in seconds\n"
+      "PSNP interval value\n"
+      "Specify interval for level-1 PSNPs\n"
+      "Specify interval for level-2 PSNPs\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/psnp-interval/level-1",
+				      NB_OP_MODIFY, intv_str);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/psnp-interval/level-2",
+				      NB_OP_MODIFY, intv_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_psnp_interval, no_psnp_interval_cmd,
+      "no isis psnp-interval [(1-120)] [level-1|level-2]$level",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Set PSNP interval in seconds\n"
+      "PSNP interval value\n"
+      "Specify interval for level-1 PSNPs\n"
+      "Specify interval for level-2 PSNPs\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/psnp-interval/level-1",
+				      NB_OP_MODIFY, NULL);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty,
+				      "./frr-isisd:isis/psnp-interval/level-2",
+				      NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_psnp_interval(struct vty *vty,
+				    const struct lyd_node *dnode,
+				    bool show_defaults)
+{
+	const char *l1 = yang_dnode_get_string(dnode, "./level-1");
+	const char *l2 = yang_dnode_get_string(dnode, "./level-2");
+
+	if (strmatch(l1, l2))
+		vty_out(vty, " isis psnp-interval %s\n", l1);
+	else {
+		vty_out(vty, " isis psnp-interval %s level-1\n", l1);
+		vty_out(vty, " isis psnp-interval %s level-2\n", l2);
+	}
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/multi-topology
+ */
+DEFPY_YANG(circuit_topology, circuit_topology_cmd,
+      "[no] isis topology<standard|ipv4-unicast|ipv4-mgmt|ipv6-unicast|ipv4-multicast|ipv6-multicast|ipv6-mgmt|ipv6-dstsrc>$topology",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Configure interface IS-IS topologies\n"
+      "Standard topology\n"
+      "IPv4 unicast topology\n"
+      "IPv4 management topology\n"
+      "IPv6 unicast topology\n"
+      "IPv4 multicast topology\n"
+      "IPv6 multicast topology\n"
+      "IPv6 management topology\n"
+      "IPv6 dst-src topology\n")
+{
+	nb_cli_enqueue_change(vty, ".", NB_OP_MODIFY, no ? "false" : "true");
+
+	if (strmatch(topology, "ipv4-mgmt"))
+		return nb_cli_apply_changes(
+			vty, "./frr-isisd:isis/multi-topology/ipv4-management");
+	else if (strmatch(topology, "ipv6-mgmt"))
+		return nb_cli_apply_changes(
+			vty, "./frr-isisd:isis/multi-topology/ipv6-management");
+	if (strmatch(topology, "ipv4-unicast"))
+		return nb_cli_apply_changes(
+			vty, "./frr-isisd:isis/multi-topology/standard");
+	else
+		return nb_cli_apply_changes(
+			vty, "./frr-isisd:isis/multi-topology/%s", topology);
+}
+
+void cli_show_ip_isis_mt_standard(struct vty *vty, const struct lyd_node *dnode,
+				  bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " isis topology standard\n");
+}
+
+void cli_show_ip_isis_mt_ipv4_multicast(struct vty *vty,
+					const struct lyd_node *dnode,
+					bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " isis topology ipv4-multicast\n");
+}
+
+void cli_show_ip_isis_mt_ipv4_mgmt(struct vty *vty,
+				   const struct lyd_node *dnode,
+				   bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " isis topology ipv4-mgmt\n");
+}
+
+void cli_show_ip_isis_mt_ipv6_unicast(struct vty *vty,
+				      const struct lyd_node *dnode,
+				      bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " isis topology ipv6-unicast\n");
+}
+
+void cli_show_ip_isis_mt_ipv6_multicast(struct vty *vty,
+					const struct lyd_node *dnode,
+					bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " isis topology ipv6-multicast\n");
+}
+
+void cli_show_ip_isis_mt_ipv6_mgmt(struct vty *vty,
+				   const struct lyd_node *dnode,
+				   bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " isis topology ipv6-mgmt\n");
+}
+
+void cli_show_ip_isis_mt_ipv6_dstsrc(struct vty *vty,
+				     const struct lyd_node *dnode,
+				     bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " isis topology ipv6-dstsrc\n");
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/circuit-type
+ */
+DEFPY_YANG(isis_circuit_type, isis_circuit_type_cmd,
+      "isis circuit-type <level-1|level-1-2|level-2-only>$type",
+      "IS-IS routing protocol\n"
+      "Configure circuit type for interface\n"
+      "Level-1 only adjacencies are formed\n"
+      "Level-1-2 adjacencies are formed\n"
+      "Level-2 only adjacencies are formed\n")
+{
+	nb_cli_enqueue_change(
+		vty, "./frr-isisd:isis/circuit-type", NB_OP_MODIFY,
+		strmatch(type, "level-2-only") ? "level-2" : type);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_isis_circuit_type, no_isis_circuit_type_cmd,
+      "no isis circuit-type [level-1|level-1-2|level-2-only]",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Configure circuit type for interface\n"
+      "Level-1 only adjacencies are formed\n"
+      "Level-1-2 adjacencies are formed\n"
+      "Level-2 only adjacencies are formed\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/circuit-type",
+			      NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_circ_type(struct vty *vty, const struct lyd_node *dnode,
+				bool show_defaults)
+{
+	int level = yang_dnode_get_enum(dnode, NULL);
+
+	switch (level) {
+	case IS_LEVEL_1:
+		vty_out(vty, " isis circuit-type level-1\n");
+		break;
+	case IS_LEVEL_2:
+		vty_out(vty, " isis circuit-type level-2-only\n");
+		break;
+	case IS_LEVEL_1_AND_2:
+		vty_out(vty, " isis circuit-type level-1-2\n");
+		break;
+	}
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/network-type
+ */
+DEFPY_YANG(isis_network, isis_network_cmd, "[no] isis network point-to-point",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Set network type\n"
+      "point-to-point network type\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/network-type",
+			      NB_OP_MODIFY,
+			      no ? "broadcast" : "point-to-point");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_network_type(struct vty *vty,
+				   const struct lyd_node *dnode,
+				   bool show_defaults)
+{
+	if (yang_dnode_get_enum(dnode, NULL) != CIRCUIT_T_P2P)
+		vty_out(vty, " no");
+
+	vty_out(vty, " isis network point-to-point\n");
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/priority
+ */
+DEFPY_YANG(isis_priority, isis_priority_cmd,
+      "isis priority (0-127)$prio [level-1|level-2]$level",
+      "IS-IS routing protocol\n"
+      "Set priority for Designated Router election\n"
+      "Priority value\n"
+      "Specify priority for level-1 routing\n"
+      "Specify priority for level-2 routing\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty, "./frr-isisd:isis/priority/level-1",
+				      NB_OP_MODIFY, prio_str);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty, "./frr-isisd:isis/priority/level-2",
+				      NB_OP_MODIFY, prio_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY_YANG(no_isis_priority, no_isis_priority_cmd,
+      "no isis priority [(0-127)] [level-1|level-2]$level",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Set priority for Designated Router election\n"
+      "Priority value\n"
+      "Specify priority for level-1 routing\n"
+      "Specify priority for level-2 routing\n")
+{
+	if (!level || strmatch(level, "level-1"))
+		nb_cli_enqueue_change(vty, "./frr-isisd:isis/priority/level-1",
+				      NB_OP_MODIFY, NULL);
+	if (!level || strmatch(level, "level-2"))
+		nb_cli_enqueue_change(vty, "./frr-isisd:isis/priority/level-2",
+				      NB_OP_MODIFY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_ip_isis_priority(struct vty *vty, const struct lyd_node *dnode,
+			       bool show_defaults)
+{
+	const char *l1 = yang_dnode_get_string(dnode, "./level-1");
+	const char *l2 = yang_dnode_get_string(dnode, "./level-2");
+
+	if (strmatch(l1, l2))
+		vty_out(vty, " isis priority %s\n", l1);
+	else {
+		vty_out(vty, " isis priority %s level-1\n", l1);
+		vty_out(vty, " isis priority %s level-2\n", l2);
+	}
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/fast-reroute
+ */
+void cli_show_ip_isis_frr(struct vty *vty, const struct lyd_node *dnode,
+			  bool show_defaults)
+{
+	bool l1_enabled, l2_enabled;
+	bool l1_node_protection, l2_node_protection;
+	bool l1_link_fallback, l2_link_fallback;
+
+	/* Classic LFA */
+	l1_enabled = yang_dnode_get_bool(dnode, "./level-1/lfa/enable");
+	l2_enabled = yang_dnode_get_bool(dnode, "./level-2/lfa/enable");
+
+	if (l1_enabled || l2_enabled) {
+		if (l1_enabled == l2_enabled) {
+			vty_out(vty, " isis fast-reroute lfa\n");
+			vty_out(vty, "\n");
+		} else {
+			if (l1_enabled)
+				vty_out(vty,
+					" isis fast-reroute lfa level-1\n");
+			if (l2_enabled)
+				vty_out(vty,
+					" isis fast-reroute lfa level-2\n");
+		}
+	}
+
+	/* Remote LFA */
+	l1_enabled = yang_dnode_get_bool(dnode, "./level-1/remote-lfa/enable");
+	l2_enabled = yang_dnode_get_bool(dnode, "./level-2/remote-lfa/enable");
+
+	if (l1_enabled || l2_enabled) {
+		if (l1_enabled == l2_enabled) {
+			vty_out(vty,
+				" isis fast-reroute remote-lfa tunnel mpls-ldp\n");
+			vty_out(vty, "\n");
+		} else {
+			if (l1_enabled)
+				vty_out(vty,
+					" isis fast-reroute remote-lfa tunnel mpls-ldp level-1\n");
+			if (l2_enabled)
+				vty_out(vty,
+					" isis fast-reroute remote-lfa tunnel mpls-ldp level-2\n");
+		}
+	}
+
+	/* TI-LFA */
+	l1_enabled = yang_dnode_get_bool(dnode, "./level-1/ti-lfa/enable");
+	l2_enabled = yang_dnode_get_bool(dnode, "./level-2/ti-lfa/enable");
+	l1_node_protection =
+		yang_dnode_get_bool(dnode, "./level-1/ti-lfa/node-protection");
+	l2_node_protection =
+		yang_dnode_get_bool(dnode, "./level-2/ti-lfa/node-protection");
+	l1_link_fallback =
+		yang_dnode_get_bool(dnode, "./level-1/ti-lfa/link-fallback");
+	l2_link_fallback =
+		yang_dnode_get_bool(dnode, "./level-2/ti-lfa/link-fallback");
+
+
+	if (l1_enabled || l2_enabled) {
+		if (l1_enabled == l2_enabled
+		    && l1_node_protection == l2_node_protection
+		    && l1_link_fallback == l2_link_fallback) {
+			vty_out(vty, " isis fast-reroute ti-lfa");
+			if (l1_node_protection)
+				vty_out(vty, " node-protection");
+			if (l1_link_fallback)
+				vty_out(vty, " link-fallback");
+			vty_out(vty, "\n");
+		} else {
+			if (l1_enabled) {
+				vty_out(vty,
+					" isis fast-reroute ti-lfa level-1");
+				if (l1_node_protection)
+					vty_out(vty, " node-protection");
+				if (l1_link_fallback)
+					vty_out(vty, " link-fallback");
+				vty_out(vty, "\n");
+			}
+			if (l2_enabled) {
+				vty_out(vty,
+					" isis fast-reroute ti-lfa level-2");
+				if (l2_node_protection)
+					vty_out(vty, " node-protection");
+				if (l2_link_fallback)
+					vty_out(vty, " link-fallback");
+				vty_out(vty, "\n");
+			}
+		}
+	}
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/fast-reroute/level-{1,2}/lfa/enable
+ */
+DEFPY(isis_lfa, isis_lfa_cmd,
+      "[no] isis fast-reroute lfa [level-1|level-2]$level",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Interface IP Fast-reroute configuration\n"
+      "Enable LFA computation\n"
+      "Enable LFA computation for Level 1 only\n"
+      "Enable LFA computation for Level 2 only\n")
+{
+	if (!level || strmatch(level, "level-1")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/lfa/enable",
+				NB_OP_MODIFY, "false");
+		} else {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/lfa/enable",
+				NB_OP_MODIFY, "true");
+		}
+	}
+	if (!level || strmatch(level, "level-2")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/lfa/enable",
+				NB_OP_MODIFY, "false");
+		} else {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/lfa/enable",
+				NB_OP_MODIFY, "true");
+		}
+	}
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+/*
+ * XPath:
+ * /frr-interface:lib/interface/frr-isisd:isis/fast-reroute/level-{1,2}/lfa/exclude-interface
+ */
+DEFPY(isis_lfa_exclude_interface, isis_lfa_exclude_interface_cmd,
+      "[no] isis fast-reroute lfa [level-1|level-2]$level exclude interface IFNAME$ifname",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Interface IP Fast-reroute configuration\n"
+      "Enable LFA computation\n"
+      "Enable LFA computation for Level 1 only\n"
+      "Enable LFA computation for Level 2 only\n"
+      "FRR exclusion information\n"
+      "Exclude an interface from computation\n"
+      "Interface name\n")
+{
+	if (!level || strmatch(level, "level-1")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/lfa/exclude-interface",
+				NB_OP_DESTROY, ifname);
+		} else {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/lfa/exclude-interface",
+				NB_OP_CREATE, ifname);
+		}
+	}
+	if (!level || strmatch(level, "level-2")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/lfa/exclude-interface",
+				NB_OP_DESTROY, ifname);
+		} else {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/lfa/exclude-interface",
+				NB_OP_CREATE, ifname);
+		}
+	}
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_frr_lfa_exclude_interface(struct vty *vty,
+					const struct lyd_node *dnode,
+					bool show_defaults)
+{
+	vty_out(vty, " isis fast-reroute lfa %s exclude interface %s\n",
+		dnode->parent->parent->schema->name,
+		yang_dnode_get_string(dnode, NULL));
+}
+
+/*
+ * XPath:
+ * /frr-interface:lib/interface/frr-isisd:isis/fast-reroute/level-{1,2}/remote-lfa/enable
+ */
+DEFPY(isis_remote_lfa, isis_remote_lfa_cmd,
+      "[no] isis fast-reroute remote-lfa tunnel mpls-ldp [level-1|level-2]$level",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Interface IP Fast-reroute configuration\n"
+      "Enable remote LFA computation\n"
+      "Enable remote LFA computation using tunnels\n"
+      "Use MPLS LDP tunnel to reach the remote LFA node\n"
+      "Enable LFA computation for Level 1 only\n"
+      "Enable LFA computation for Level 2 only\n")
+{
+	if (!level || strmatch(level, "level-1")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/remote-lfa/enable",
+				NB_OP_MODIFY, "false");
+		} else {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/remote-lfa/enable",
+				NB_OP_MODIFY, "true");
+		}
+	}
+	if (!level || strmatch(level, "level-2")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/remote-lfa/enable",
+				NB_OP_MODIFY, "false");
+		} else {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/remote-lfa/enable",
+				NB_OP_MODIFY, "true");
+		}
+	}
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+/*
+ * XPath:
+ * /frr-interface:lib/interface/frr-isisd:isis/fast-reroute/level-{1,2}/remote-lfa/maximum-metric
+ */
+DEFPY(isis_remote_lfa_max_metric, isis_remote_lfa_max_metric_cmd,
+      "[no] isis fast-reroute remote-lfa maximum-metric (1-16777215)$metric [level-1|level-2]$level",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Interface IP Fast-reroute configuration\n"
+      "Enable remote LFA computation\n"
+      "Limit remote LFA node selection within the metric\n"
+      "Value of the metric\n"
+      "Enable LFA computation for Level 1 only\n"
+      "Enable LFA computation for Level 2 only\n")
+{
+	if (!level || strmatch(level, "level-1")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/remote-lfa/maximum-metric",
+				NB_OP_DESTROY, NULL);
+		} else {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/remote-lfa/maximum-metric",
+				NB_OP_MODIFY, metric_str);
+		}
+	}
+	if (!level || strmatch(level, "level-2")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/remote-lfa/maximum-metric",
+				NB_OP_DESTROY, NULL);
+		} else {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/remote-lfa/maximum-metric",
+				NB_OP_MODIFY, metric_str);
+		}
+	}
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_frr_remote_lfa_max_metric(struct vty *vty,
+					const struct lyd_node *dnode,
+					bool show_defaults)
+{
+	vty_out(vty, " isis fast-reroute remote-lfa maximum-metric %s %s\n",
+		yang_dnode_get_string(dnode, NULL),
+		dnode->parent->parent->schema->name);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/fast-reroute/level-{1,2}/ti-lfa/enable
+ */
+DEFPY(isis_ti_lfa, isis_ti_lfa_cmd,
+      "[no] isis fast-reroute ti-lfa [level-1|level-2]$level [node-protection$node_protection [link-fallback$link_fallback]]",
+      NO_STR
+      "IS-IS routing protocol\n"
+      "Interface IP Fast-reroute configuration\n"
+      "Enable TI-LFA computation\n"
+      "Enable TI-LFA computation for Level 1 only\n"
+      "Enable TI-LFA computation for Level 2 only\n"
+      "Protect against node failures\n"
+      "Enable link-protection fallback\n")
+{
+	if (!level || strmatch(level, "level-1")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/ti-lfa/enable",
+				NB_OP_MODIFY, "false");
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/ti-lfa/node-protection",
+				NB_OP_MODIFY, "false");
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/ti-lfa/link-fallback",
+				NB_OP_MODIFY, "false");
+		} else {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/ti-lfa/enable",
+				NB_OP_MODIFY, "true");
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/ti-lfa/node-protection",
+				NB_OP_MODIFY,
+				node_protection ? "true" : "false");
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-1/ti-lfa/link-fallback",
+				NB_OP_MODIFY, link_fallback ? "true" : "false");
+		}
+	}
+	if (!level || strmatch(level, "level-2")) {
+		if (no) {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/ti-lfa/enable",
+				NB_OP_MODIFY, "false");
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/ti-lfa/node-protection",
+				NB_OP_MODIFY, "false");
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/ti-lfa/link-fallback",
+				NB_OP_MODIFY, "false");
+		} else {
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/ti-lfa/enable",
+				NB_OP_MODIFY, "true");
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/ti-lfa/node-protection",
+				NB_OP_MODIFY,
+				node_protection ? "true" : "false");
+			nb_cli_enqueue_change(
+				vty,
+				"./frr-isisd:isis/fast-reroute/level-2/ti-lfa/link-fallback",
+				NB_OP_MODIFY, link_fallback ? "true" : "false");
+		}
+	}
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/log-adjacency-changes
+ */
+DEFPY_YANG(log_adj_changes, log_adj_changes_cmd, "[no] log-adjacency-changes",
+      NO_STR "Log changes in adjacency state\n")
+{
+	nb_cli_enqueue_change(vty, "./log-adjacency-changes", NB_OP_MODIFY,
+			      no ? "false" : "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_log_adjacency(struct vty *vty, const struct lyd_node *dnode,
+				 bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+	vty_out(vty, " log-adjacency-changes\n");
+}
+
+/*
+ * XPath: /frr-isisd:isis/instance/mpls/ldp-sync
+ */
+DEFPY(isis_mpls_ldp_sync, isis_mpls_ldp_sync_cmd, "mpls ldp-sync",
+      MPLS_STR MPLS_LDP_SYNC_STR)
+{
+	nb_cli_enqueue_change(vty, "./mpls/ldp-sync", NB_OP_CREATE, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(no_isis_mpls_ldp_sync, no_isis_mpls_ldp_sync_cmd, "no mpls ldp-sync",
+      NO_STR MPLS_STR NO_MPLS_LDP_SYNC_STR)
+{
+	nb_cli_enqueue_change(vty, "./mpls/ldp-sync", NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_mpls_ldp_sync(struct vty *vty, const struct lyd_node *dnode,
+				 bool show_defaults)
+{
+	vty_out(vty, " mpls ldp-sync\n");
+}
+
+DEFPY(isis_mpls_ldp_sync_holddown, isis_mpls_ldp_sync_holddown_cmd,
+      "mpls ldp-sync holddown (0-10000)",
+      MPLS_STR MPLS_LDP_SYNC_STR
+      "Time to wait for LDP-SYNC to occur before restoring interface metric\n"
+      "Time in seconds\n")
+{
+	nb_cli_enqueue_change(vty, "./mpls/ldp-sync/holddown", NB_OP_MODIFY,
+			      holddown_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(no_isis_mpls_ldp_sync_holddown, no_isis_mpls_ldp_sync_holddown_cmd,
+      "no mpls ldp-sync holddown [<(1-10000)>]",
+      NO_STR MPLS_STR MPLS_LDP_SYNC_STR NO_MPLS_LDP_SYNC_HOLDDOWN_STR "Time in seconds\n")
+{
+	nb_cli_enqueue_change(vty, "./mpls/ldp-sync/holddown", NB_OP_DESTROY,
+			      NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_mpls_ldp_sync_holddown(struct vty *vty,
+					  const struct lyd_node *dnode,
+					  bool show_defaults)
+{
+	vty_out(vty, " mpls ldp-sync holddown %s\n",
+		yang_dnode_get_string(dnode, NULL));
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-isisd:isis/mpls/ldp-sync
+ */
+DEFPY(isis_mpls_if_ldp_sync, isis_mpls_if_ldp_sync_cmd,
+      "[no] isis mpls ldp-sync",
+      NO_STR "IS-IS routing protocol\n" MPLS_STR MPLS_LDP_SYNC_STR)
+{
+	const struct lyd_node *dnode;
+
+	dnode = yang_dnode_getf(vty->candidate_config->dnode,
+				"%s/frr-isisd:isis", VTY_CURR_XPATH);
+	if (dnode == NULL) {
+		vty_out(vty, "ISIS is not enabled on this circuit\n");
+		return CMD_SUCCESS;
+	}
+
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/mpls/ldp-sync",
+			      NB_OP_MODIFY, no ? "false" : "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+
+void cli_show_isis_mpls_if_ldp_sync(struct vty *vty,
+				    const struct lyd_node *dnode,
+				    bool show_defaults)
+{
+	if (!yang_dnode_get_bool(dnode, NULL))
+		vty_out(vty, " no");
+
+	vty_out(vty, " isis mpls ldp-sync\n");
+}
+
+DEFPY(isis_mpls_if_ldp_sync_holddown, isis_mpls_if_ldp_sync_holddown_cmd,
+      "isis mpls ldp-sync holddown (0-10000)",
+      "IS-IS routing protocol\n" MPLS_STR MPLS_LDP_SYNC_STR
+      "Time to wait for LDP-SYNC to occur before restoring interface metric\n"
+      "Time in seconds\n")
+{
+	const struct lyd_node *dnode;
+
+	dnode = yang_dnode_getf(vty->candidate_config->dnode,
+				"%s/frr-isisd:isis", VTY_CURR_XPATH);
+	if (dnode == NULL) {
+		vty_out(vty, "ISIS is not enabled on this circuit\n");
+		return CMD_SUCCESS;
+	}
+
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/mpls/holddown",
+			      NB_OP_MODIFY, holddown_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(no_isis_mpls_if_ldp_sync_holddown, no_isis_mpls_if_ldp_sync_holddown_cmd,
+      "no isis mpls ldp-sync holddown [<(1-10000)>]",
+      NO_STR "IS-IS routing protocol\n" MPLS_STR NO_MPLS_LDP_SYNC_STR
+	      NO_MPLS_LDP_SYNC_HOLDDOWN_STR "Time in seconds\n")
+{
+	const struct lyd_node *dnode;
+
+	dnode = yang_dnode_getf(vty->candidate_config->dnode,
+				"%s/frr-isisd:isis", VTY_CURR_XPATH);
+	if (dnode == NULL) {
+		vty_out(vty, "ISIS is not enabled on this circuit\n");
+		return CMD_SUCCESS;
+	}
+
+	nb_cli_enqueue_change(vty, "./frr-isisd:isis/mpls/holddown",
+			      NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_isis_mpls_if_ldp_sync_holddown(struct vty *vty,
+					     const struct lyd_node *dnode,
+					     bool show_defaults)
+{
+	vty_out(vty, " isis mpls ldp-sync holddown %s\n",
+		yang_dnode_get_string(dnode, NULL));
+}
+
+void isis_cli_init(void)
+{
+	install_element(CONFIG_NODE, &router_isis_cmd);
+	install_element(CONFIG_NODE, &no_router_isis_cmd);
+
+	install_element(INTERFACE_NODE, &ip_router_isis_cmd);
+	install_element(INTERFACE_NODE, &ip_router_isis_vrf_cmd);
+	install_element(INTERFACE_NODE, &ip6_router_isis_cmd);
+	install_element(INTERFACE_NODE, &ip6_router_isis_vrf_cmd);
+	install_element(INTERFACE_NODE, &no_ip_router_isis_cmd);
+	install_element(INTERFACE_NODE, &no_ip_router_isis_vrf_cmd);
+	install_element(INTERFACE_NODE, &isis_bfd_cmd);
+	install_element(INTERFACE_NODE, &isis_bfd_profile_cmd);
+
+	install_element(ISIS_NODE, &net_cmd);
+
+	install_element(ISIS_NODE, &is_type_cmd);
+	install_element(ISIS_NODE, &no_is_type_cmd);
+
+	install_element(ISIS_NODE, &dynamic_hostname_cmd);
+
+	install_element(ISIS_NODE, &set_overload_bit_cmd);
+	install_element(ISIS_NODE, &attached_bit_send_cmd);
+	install_element(ISIS_NODE, &attached_bit_receive_ignore_cmd);
+
+	install_element(ISIS_NODE, &metric_style_cmd);
+	install_element(ISIS_NODE, &no_metric_style_cmd);
+
+	install_element(ISIS_NODE, &area_passwd_cmd);
+	install_element(ISIS_NODE, &domain_passwd_cmd);
+	install_element(ISIS_NODE, &no_area_passwd_cmd);
+
+	install_element(ISIS_NODE, &lsp_gen_interval_cmd);
+	install_element(ISIS_NODE, &no_lsp_gen_interval_cmd);
+	install_element(ISIS_NODE, &lsp_refresh_interval_cmd);
+	install_element(ISIS_NODE, &no_lsp_refresh_interval_cmd);
+	install_element(ISIS_NODE, &max_lsp_lifetime_cmd);
+	install_element(ISIS_NODE, &no_max_lsp_lifetime_cmd);
+	install_element(ISIS_NODE, &lsp_timers_cmd);
+	install_element(ISIS_NODE, &no_lsp_timers_cmd);
+	install_element(ISIS_NODE, &area_lsp_mtu_cmd);
+	install_element(ISIS_NODE, &no_area_lsp_mtu_cmd);
+
+	install_element(ISIS_NODE, &spf_interval_cmd);
+	install_element(ISIS_NODE, &no_spf_interval_cmd);
+	install_element(ISIS_NODE, &spf_prefix_priority_cmd);
+	install_element(ISIS_NODE, &no_spf_prefix_priority_cmd);
+	install_element(ISIS_NODE, &spf_delay_ietf_cmd);
+	install_element(ISIS_NODE, &no_spf_delay_ietf_cmd);
+
+	install_element(ISIS_NODE, &area_purge_originator_cmd);
+
+	install_element(ISIS_NODE, &isis_mpls_te_on_cmd);
+	install_element(ISIS_NODE, &no_isis_mpls_te_on_cmd);
+	install_element(ISIS_NODE, &isis_mpls_te_router_addr_cmd);
+	install_element(ISIS_NODE, &no_isis_mpls_te_router_addr_cmd);
+	install_element(ISIS_NODE, &isis_mpls_te_router_addr_v6_cmd);
+	install_element(ISIS_NODE, &no_isis_mpls_te_router_addr_v6_cmd);
+	install_element(ISIS_NODE, &isis_mpls_te_inter_as_cmd);
+	install_element(ISIS_NODE, &isis_mpls_te_export_cmd);
+	install_element(ISIS_NODE, &no_isis_mpls_te_export_cmd);
+
+	install_element(ISIS_NODE, &isis_default_originate_cmd);
+	install_element(ISIS_NODE, &isis_redistribute_cmd);
+
+	install_element(ISIS_NODE, &isis_topology_cmd);
+
+	install_element(ISIS_NODE, &isis_sr_enable_cmd);
+	install_element(ISIS_NODE, &no_isis_sr_enable_cmd);
+	install_element(ISIS_NODE, &isis_sr_global_block_label_range_cmd);
+	install_element(ISIS_NODE, &no_isis_sr_global_block_label_range_cmd);
+	install_element(ISIS_NODE, &isis_sr_node_msd_cmd);
+	install_element(ISIS_NODE, &no_isis_sr_node_msd_cmd);
+	install_element(ISIS_NODE, &isis_sr_prefix_sid_cmd);
+	install_element(ISIS_NODE, &no_isis_sr_prefix_sid_cmd);
+	install_element(ISIS_NODE, &isis_frr_lfa_priority_limit_cmd);
+	install_element(ISIS_NODE, &isis_frr_lfa_tiebreaker_cmd);
+	install_element(ISIS_NODE, &isis_frr_lfa_load_sharing_cmd);
+	install_element(ISIS_NODE, &isis_frr_remote_lfa_plist_cmd);
+	install_element(ISIS_NODE, &no_isis_frr_remote_lfa_plist_cmd);
+
+	install_element(INTERFACE_NODE, &isis_passive_cmd);
+
+	install_element(INTERFACE_NODE, &isis_passwd_cmd);
+	install_element(INTERFACE_NODE, &no_isis_passwd_cmd);
+
+	install_element(INTERFACE_NODE, &isis_metric_cmd);
+	install_element(INTERFACE_NODE, &no_isis_metric_cmd);
+
+	install_element(INTERFACE_NODE, &isis_hello_interval_cmd);
+	install_element(INTERFACE_NODE, &no_isis_hello_interval_cmd);
+
+	install_element(INTERFACE_NODE, &isis_hello_multiplier_cmd);
+	install_element(INTERFACE_NODE, &no_isis_hello_multiplier_cmd);
+
+	install_element(INTERFACE_NODE, &isis_threeway_adj_cmd);
+
+	install_element(INTERFACE_NODE, &isis_hello_padding_cmd);
+
+	install_element(INTERFACE_NODE, &csnp_interval_cmd);
+	install_element(INTERFACE_NODE, &no_csnp_interval_cmd);
+
+	install_element(INTERFACE_NODE, &psnp_interval_cmd);
+	install_element(INTERFACE_NODE, &no_psnp_interval_cmd);
+
+	install_element(INTERFACE_NODE, &circuit_topology_cmd);
+
+	install_element(INTERFACE_NODE, &isis_circuit_type_cmd);
+	install_element(INTERFACE_NODE, &no_isis_circuit_type_cmd);
+
+	install_element(INTERFACE_NODE, &isis_network_cmd);
+
+	install_element(INTERFACE_NODE, &isis_priority_cmd);
+	install_element(INTERFACE_NODE, &no_isis_priority_cmd);
+
+	install_element(INTERFACE_NODE, &isis_lfa_cmd);
+	install_element(INTERFACE_NODE, &isis_lfa_exclude_interface_cmd);
+	install_element(INTERFACE_NODE, &isis_remote_lfa_cmd);
+	install_element(INTERFACE_NODE, &isis_remote_lfa_max_metric_cmd);
+	install_element(INTERFACE_NODE, &isis_ti_lfa_cmd);
+
+	install_element(ISIS_NODE, &log_adj_changes_cmd);
+
+	install_element(ISIS_NODE, &isis_mpls_ldp_sync_cmd);
+	install_element(ISIS_NODE, &no_isis_mpls_ldp_sync_cmd);
+	install_element(ISIS_NODE, &isis_mpls_ldp_sync_holddown_cmd);
+	install_element(ISIS_NODE, &no_isis_mpls_ldp_sync_holddown_cmd);
+	install_element(INTERFACE_NODE, &isis_mpls_if_ldp_sync_cmd);
+	install_element(INTERFACE_NODE, &isis_mpls_if_ldp_sync_holddown_cmd);
+	install_element(INTERFACE_NODE, &no_isis_mpls_if_ldp_sync_holddown_cmd);
+}
+
+#endif /* ifndef FABRICD */