Adding upstream version 8.4.4.upstream/8.4.4upstream

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

2 files changed, 776 insertions, 0 deletions

diff --git a/tests/topotests/bgp_gr_functionality_topo3/bgp_gr_functionality_topo3.json b/tests/topotests/bgp_gr_functionality_topo3/bgp_gr_functionality_topo3.json
new file mode 100644
index 0000000..84ddc61
--- /dev/null
+++ b/tests/topotests/bgp_gr_functionality_topo3/bgp_gr_functionality_topo3.json
@@ -0,0 +1,222 @@
+{
+    "address_types": [
+        "ipv4",
+        "ipv6"
+    ],
+    "ipv4base": "192.168.0.0",
+    "ipv4mask": 24,
+    "ipv6base": "fd00::",
+    "ipv6mask": 64,
+    "link_ip_start": {
+        "ipv4": "192.168.0.0",
+        "v4mask": 24,
+        "ipv6": "fd00::",
+        "v6mask": 64
+    },
+    "lo_prefix": {
+        "ipv4": "1.0.",
+        "v4mask": 32,
+        "ipv6": "2001:DB8:F::",
+        "v6mask": 128
+    },
+    "routers": {
+        "r1": {
+            "links": {
+                "r2-link1": {
+                    "ipv4": "auto",
+                    "ipv6": "auto",
+                    "vrf": "RED"
+                }
+            },
+            "vrfs": [
+                {
+                    "name": "RED",
+                    "id": "1"
+                }
+            ],
+            "bgp": [
+                {
+                    "local_as": "100",
+                    "vrf": "RED",
+                    "address_family": {
+                        "ipv4": {
+                            "unicast": {
+                                "neighbor": {
+                                    "r2": {
+                                        "dest_link": {
+                                            "r1-link1": {}
+                                        }
+                                    }
+                                },
+                                "redistribute": [
+                                    {
+                                        "redist_type": "static"
+                                    }
+                                ]
+                            }
+                        },
+                        "ipv6": {
+                            "unicast": {
+                                "neighbor": {
+                                    "r2": {
+                                        "dest_link": {
+                                            "r1-link1": {}
+                                        }
+                                    }
+                                },
+                                "redistribute": [
+                                    {
+                                        "redist_type": "static"
+                                    }
+                                ]
+                            }
+                        }
+                    }
+                }
+            ]
+        },
+        "r2": {
+            "links": {
+                "r1-link1": {
+                    "ipv4": "auto",
+                    "ipv6": "auto",
+                    "vrf": "RED"
+                },
+                "r3-link1": {
+                    "ipv4": "auto",
+                    "ipv6": "auto"
+                }
+            },
+            "vrfs": [
+                {
+                    "name": "RED",
+                    "id": "1"
+                }
+            ],
+            "bgp": [
+                {
+                    "local_as": "200",
+                    "address_family": {
+                        "ipv4": {
+                            "unicast": {
+                                "neighbor": {
+                                    "r3": {
+                                        "dest_link": {
+                                            "r2-link1": {}
+                                        }
+                                    }
+                                },
+                                "redistribute": [
+                                    {
+                                        "redist_type": "static"
+                                    }
+                                ]
+                            }
+                        },
+                        "ipv6": {
+                            "unicast": {
+                                "neighbor": {
+                                    "r3": {
+                                        "dest_link": {
+                                            "r2-link1": {}
+                                        }
+                                    }
+                                },
+                                "redistribute": [
+                                    {
+                                        "redist_type": "static"
+                                    }
+                                ]
+                            }
+                        }
+                    }
+                },
+                {
+                    "local_as": "200",
+                    "vrf": "RED",
+                    "address_family": {
+                        "ipv4": {
+                            "unicast": {
+                                "neighbor": {
+                                    "r1": {
+                                        "dest_link": {
+                                            "r2-link1": {}
+                                        }
+                                    }
+                                },
+                                "redistribute": [
+                                    {
+                                        "redist_type": "static"
+                                    }
+                                ]
+                            }
+                        },
+                        "ipv6": {
+                            "unicast": {
+                                "neighbor": {
+                                    "r1": {
+                                        "dest_link": {
+                                            "r2-link1": {}
+                                        }
+                                    }
+                                },
+                                "redistribute": [
+                                    {
+                                        "redist_type": "static"
+                                    }
+                                ]
+                            }
+                        }
+                    }
+                }
+            ]
+        },
+        "r3": {
+            "links": {
+                "r2-link1": {
+                    "ipv4": "auto",
+                    "ipv6": "auto"
+                }
+            },
+            "bgp": [
+                {
+                    "local_as": "300",
+                    "address_family": {
+                        "ipv4": {
+                            "unicast": {
+                                "neighbor": {
+                                    "r2": {
+                                        "dest_link": {
+                                            "r3-link1": {}
+                                        }
+                                    }
+                                },
+                                "redistribute": [
+                                    {
+                                        "redist_type": "static"
+                                    }
+                                ]
+                            }
+                        },
+                        "ipv6": {
+                            "unicast": {
+                                "neighbor": {
+                                    "r2": {
+                                        "dest_link": {
+                                            "r3-link1": {}
+                                        }
+                                    }
+                                },
+                                "redistribute": [
+                                    {
+                                        "redist_type": "static"
+                                    }
+                                ]
+                            }
+                        }
+                    }
+                }
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/topotests/bgp_gr_functionality_topo3/bgp_gr_functionality_topo3.py b/tests/topotests/bgp_gr_functionality_topo3/bgp_gr_functionality_topo3.py
new file mode 100644
index 0000000..6bf8b96
--- /dev/null
+++ b/tests/topotests/bgp_gr_functionality_topo3/bgp_gr_functionality_topo3.py
@@ -0,0 +1,554 @@
+#!/usr/bin/env python
+#
+# Copyright (c) 2019 by VMware, Inc. ("VMware")
+# Used Copyright (c) 2018 by Network Device Education Foundation, Inc. ("NetDEF")
+# in this file.
+#
+# Permission to use, copy, modify, and/or distribute this software
+# for any purpose with or without fee is hereby granted, provided
+# that the above copyright notice and this permission notice appear
+# in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
+# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+# OF THIS SOFTWARE.
+#
+
+import os
+import sys
+import time
+import pytest
+from time import sleep
+
+import traceback
+import ipaddress
+
+# Save the Current Working Directory to find configuration files.
+CWD = os.path.dirname(os.path.realpath(__file__))
+sys.path.append(os.path.join("../"))
+sys.path.append(os.path.join("../lib/"))
+
+# pylint: disable=C0413
+# Import topogen and topotest helpers
+from lib.topogen import Topogen, get_topogen
+from lib.topolog import logger
+
+# Required to instantiate the topology builder class.
+
+# Import topoJson from lib, to create topology and initial configuration
+from lib.topojson import build_config_from_json
+from lib.bgp import (
+    clear_bgp,
+    verify_bgp_rib,
+    verify_graceful_restart,
+    create_router_bgp,
+    verify_r_bit,
+    verify_eor,
+    verify_f_bit,
+    verify_bgp_convergence,
+    verify_gr_address_family,
+    modify_bgp_config_when_bgpd_down,
+    verify_graceful_restart_timers,
+    verify_bgp_convergence_from_running_config,
+)
+# Import common_config to use commomnly used APIs
+from lib.common_config import (create_common_configuration,
+                               InvalidCLIError, retry,
+                               generate_ips, FRRCFG_FILE,
+                               find_interface_with_greater_ip,
+                               check_address_types,
+                               validate_ip_address,
+                               run_frr_cmd,
+                               get_frr_ipv6_linklocal)
+
+from lib.common_config import (
+    write_test_header,
+    reset_config_on_routers,
+    start_topology,
+    kill_router_daemons,
+    start_router_daemons,
+    verify_rib,
+    check_address_types,
+    write_test_footer,
+    check_router_status,
+    step,
+    get_frr_ipv6_linklocal,
+    create_static_routes,
+    required_linux_kernel_version,
+)
+
+pytestmark = [pytest.mark.bgpd]
+
+
+# Global variables
+BGP_CONVERGENCE = False
+GR_RESTART_TIMER = 5
+GR_SELECT_DEFER_TIMER = 5
+GR_STALEPATH_TIMER = 5
+# Global variables
+# STATIC_ROUTES=[]
+NETWORK1_1 = {"ipv4": "192.0.2.1/32", "ipv6": "2001:DB8::1:1/128"}
+NETWORK1_2 = {"ipv4": "192.0.2.2/32", "ipv6": "2001:DB8::2:1/128"}
+NETWORK2_1 = {"ipv4": "192.0.2.3/32", "ipv6": "2001:DB8::3:1/128"}
+NETWORK2_2 = {"ipv4": "192.0.2.4/32", "ipv6": "2001:DB8::4:1/128"}
+NETWORK3_1 = {"ipv4": "192.0.2.5/32", "ipv6": "2001:DB8::5:1/128"}
+NETWORK3_2 = {"ipv4": "192.0.2.6/32", "ipv6": "2001:DB8::6:1/128"}
+NETWORK4_1 = {"ipv4": "192.0.2.7/32", "ipv6": "2001:DB8::7:1/128"}
+NETWORK4_2 = {"ipv4": "192.0.2.8/32", "ipv6": "2001:DB8::8:1/128"}
+NETWORK5_1 = {"ipv4": "192.0.2.9/32", "ipv6": "2001:DB8::9:1/128"}
+NETWORK5_2 = {"ipv4": "192.0.2.10/32", "ipv6": "2001:DB8::10:1/128"}
+
+NEXT_HOP_IP = {"ipv4": "Null0", "ipv6": "Null0"}
+
+PREFERRED_NEXT_HOP = "link_local"
+
+
+def configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name,
+                                   dut, peer):
+    """
+    result = configure_gr_followed_by_clear(tgen, topo, dut)
+    assert result is True, \
+        "Testcase {} :Failed \n Error {}". \
+            format(tc_name, result)
+    """
+
+    result = create_router_bgp(tgen, topo, input_dict)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(
+        tc_name, result)
+    for addr_type in ADDR_TYPES:
+        clear_bgp(tgen, addr_type, dut)
+
+    for addr_type in ADDR_TYPES:
+        clear_bgp(tgen, addr_type, peer)
+
+    result = verify_bgp_convergence_from_running_config(tgen)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
+
+    return True
+
+def verify_stale_routes_list(tgen, addr_type, dut, input_dict):
+    """
+    This API is use verify Stale routes on refering the network with next hop value
+    Parameters
+    ----------
+    * `tgen`: topogen object
+    * `dut`: input dut router name
+    * `addr_type` : ip type ipv4/ipv6
+    * `input_dict` : input dict, has details of static routes
+    Usage
+    -----
+    dut = 'r1'
+    input_dict = {
+                "r3": {
+                    "static_routes": [
+
+                        {
+                            "network": [NETWORK1_1[addr_type]],
+                            "no_of_ip": 2,
+                            "vrf": "RED"
+                        }
+                    ]
+                }
+            }
+
+    result = verify_stale_routes_list(tgen, addr_type, dut, input_dict)
+    Returns
+    -------
+    errormsg(str) or True
+    """
+    logger.debug("Entering lib API: verify_stale_routes_list()")
+    router_list = tgen.routers()
+    additional_nexthops_in_required_nhs = []
+    list1 = []
+    list2 = []
+    found_hops = []
+    for routerInput in input_dict.keys():
+        for router, rnode in router_list.items():
+            if router != dut:
+                continue
+            # Verifying RIB routes
+            command = "show bgp"
+            # Static routes
+            sleep(2)
+            logger.info('Checking router {} BGP RIB:'.format(dut))
+            if 'static_routes' in input_dict[routerInput]:
+                static_routes = input_dict[routerInput]["static_routes"]
+                for static_route in static_routes:
+                    found_routes = []
+                    missing_routes = []
+                    st_found = False
+                    nh_found = False
+                    vrf = static_route.setdefault("vrf", None)
+                    community = static_route.setdefault("community", None)
+                    largeCommunity = \
+                        static_route.setdefault("largeCommunity", None)
+                    if vrf:
+                        cmd = "{} vrf {} {}".\
+                            format(command, vrf, addr_type)
+                        if community:
+                            cmd = "{} community {}".\
+                                format(cmd, community)
+                        if largeCommunity:
+                            cmd = "{} large-community {}".\
+                                format(cmd, largeCommunity)
+                    else:
+                        cmd = "{} {}".\
+                            format(command, addr_type)
+                    cmd = "{} json".format(cmd)
+                    rib_routes_json = run_frr_cmd(rnode, cmd, isjson=True)
+                    # Verifying output dictionary rib_routes_json is not empty
+                    if bool(rib_routes_json) == False:
+                        errormsg = "[DUT: {}]: No route found in rib of router". \
+                            format(router)
+                        return errormsg
+                    elif "warning" in rib_routes_json:
+                        errormsg = "[DUT: {}]: {}". \
+                            format(router, rib_routes_json["warning"])
+                        return errormsg
+                    network = static_route["network"]
+                    if "no_of_ip" in static_route:
+                        no_of_ip = static_route["no_of_ip"]
+                    else:
+                        no_of_ip = 1
+                    # Generating IPs for verification
+                    ip_list = generate_ips(network, no_of_ip)
+
+                    for st_rt in ip_list:
+                        st_rt = str(ipaddress.ip_network(st_rt))
+                        _addr_type = validate_ip_address(st_rt)
+                        if _addr_type != addr_type:
+                            continue
+                        if st_rt in rib_routes_json["routes"]:
+                            st_found = True
+
+                            found_routes.append(st_rt)
+                            for mnh in range(0, len(rib_routes_json[
+                                'routes'][st_rt])):
+                                found_hops.append([rib_r[
+                                        "ip"] for rib_r in rib_routes_json[
+                                            'routes'][st_rt][
+                                                mnh]["nexthops"]])
+                            return found_hops
+                        else:
+                            return 'error  msg - no hops found'
+
+
+def setup_module(mod):
+    """
+    Sets up the pytest environment
+
+    * `mod`: module name
+    """
+
+    # Required linux kernel version for this suite to run.
+    result = required_linux_kernel_version("4.16")
+    if result is not True:
+        pytest.skip("Kernel requirements are not met")
+
+    global ADDR_TYPES
+
+    testsuite_run_time = time.asctime(time.localtime(time.time()))
+    logger.info("Testsuite start time: {}".format(testsuite_run_time))
+    logger.info("=" * 40)
+
+    logger.info("Running setup_module to create topology")
+
+    # This function initiates the topology build with Topogen...
+    json_file = "{}/bgp_gr_functionality_topo3.json".format(CWD)
+    tgen = Topogen(json_file, mod.__name__)
+    global topo
+    topo = tgen.json_topo
+    # ... and here it calls Mininet initialization functions.
+
+    # Starting topology, create tmp files which are loaded to routers
+    #  to start daemons and then start routers
+    start_topology(tgen)
+
+    # Creating configuration from JSON
+    build_config_from_json(tgen, topo)
+
+    # Api call verify whether BGP is converged
+    ADDR_TYPES = check_address_types()
+
+    for addr_type in ADDR_TYPES:
+        BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo)
+        assert BGP_CONVERGENCE is True, "setup_module : Failed \n Error:" " {}".format(
+            BGP_CONVERGENCE
+        )
+
+    logger.info("Running setup_module() done")
+
+
+def teardown_module(mod):
+    """
+    Teardown the pytest environment
+
+    * `mod`: module name
+    """
+
+    logger.info("Running teardown_module to delete topology")
+
+    tgen = get_topogen()
+
+    # Stop toplogy and Remove tmp files
+    tgen.stop_topology()
+
+    logger.info(
+        "Testsuite end time: {}".format(time.asctime(time.localtime(time.time())))
+    )
+    logger.info("=" * 40)
+################################################################################
+#
+#                       TEST CASES
+#
+################################################################################
+def test_bgp_gr_stale_routes(request):
+    tgen = get_topogen()
+    tc_name = request.node.name
+    write_test_header(tc_name)
+
+    step("Verify the router failures")
+    if tgen.routers_have_failure():
+        check_router_status(tgen)
+
+    step("Creating 5 static Routes in Router R3 with NULL0 as Next hop")
+    for addr_type in ADDR_TYPES:
+            input_dict_1 = {
+                "r3": {
+                    "static_routes": [{
+                    "network": [NETWORK1_1[addr_type]] + [NETWORK1_2[addr_type]],
+                    "next_hop": NEXT_HOP_IP[addr_type]
+                },
+                {
+                    "network": [NETWORK2_1[addr_type]] + [NETWORK2_2[addr_type]],
+                    "next_hop": NEXT_HOP_IP[addr_type]
+                },
+                {
+                    "network": [NETWORK3_1[addr_type]] + [NETWORK3_2[addr_type]],
+                    "next_hop": NEXT_HOP_IP[addr_type]
+                },
+                {
+                    "network": [NETWORK4_1[addr_type]] + [NETWORK4_2[addr_type]],
+                    "next_hop": NEXT_HOP_IP[addr_type]
+                },
+                {
+                    "network": [NETWORK5_1[addr_type]] + [NETWORK5_2[addr_type]],
+                    "next_hop": NEXT_HOP_IP[addr_type]
+                }]
+            }
+            }
+            result = create_static_routes(tgen, input_dict_1)
+            assert result is True, 'Testcase {} : Failed \n Error: {}'.format(
+            tc_name, result)
+    step("verifying Created  Route  at R3 in VRF default")
+    for addr_type in ADDR_TYPES:
+        dut = 'r3'
+        input_dict_1= {'r3': topo['routers']['r3']}
+        result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1)
+        assert result is True, \
+            "Testcase {} :Failed \n Error {}". \
+                format(tc_name, result)
+    #done
+    step("verifying Created  Route  at R2 in VRF default")
+    for addr_type in ADDR_TYPES:
+        dut = 'r2'
+        input_dict_1= {'r2': topo['routers']['r2']}
+        result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1)
+        assert result is True, \
+            "Testcase {} :Failed \n Error {}". \
+                format(tc_name, result)
+    step("importing vrf RED on R2 under Address Family")
+    for addr_type in ADDR_TYPES:
+        input_import_vrf={
+            "r2": {
+                "bgp": [
+                    {
+                        "local_as": 200,
+                        "vrf": "RED",
+                        "address_family": {addr_type: {"unicast": {"import": {"vrf": "default"}}}},
+                    }
+                ]
+            }
+        }
+        result = create_router_bgp(tgen, topo,input_import_vrf)
+        assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
+    #done
+    step("verifying static  Routes  at R2 in VRF RED")
+    for addr_type in ADDR_TYPES:
+        dut = 'r2'
+        input_dict_1= {'r2': topo['routers']['r2']}
+        result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1)
+        assert result is True, \
+            "Testcase {} :Failed \n Error {}". \
+                format(tc_name, result)
+
+    step("verifying static  Routes  at R1 in VRF RED")
+    for addr_type in ADDR_TYPES:
+        dut = 'r1'
+        input_dict_1= {'r1': topo['routers']['r1']}
+        result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1)
+        assert result is True, \
+            "Testcase {} :Failed \n Error {}". \
+                format(tc_name, result)
+
+    step("Configuring Graceful restart at R2 and R3 ")
+    input_dict = {
+        "r2": {
+
+            "bgp": {
+                "local_as": "200",
+                "graceful-restart": {
+                    "graceful-restart": True,
+                }
+            }
+        },
+        "r3": {
+            "bgp": {
+                "local_as": "300",
+                "graceful-restart": {
+                    "graceful-restart": True
+                }
+            }
+        }
+    }
+
+    configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name,dut='r2', peer='r3')
+
+
+
+    step("verify Graceful restart at R2")
+    for addr_type in ADDR_TYPES:
+        result = verify_graceful_restart(tgen, topo, addr_type, input_dict,
+                                         dut='r2', peer='r3')
+        assert result is True, \
+            "Testcase {} :Failed \n Error {}". \
+                format(tc_name, result)
+
+    step("verify Graceful restart at R3")
+    for addr_type in ADDR_TYPES:
+        result = verify_graceful_restart(tgen, topo, addr_type, input_dict,
+                                         dut='r3', peer='r2')
+        assert result is True, \
+            "Testcase {} :Failed \n Error {}". \
+                format(tc_name, result)
+
+    step("Configuring Graceful-restart-disable at R3")
+    input_dict = {
+        "r2": {
+
+            "bgp": {
+                "local_as": "200",
+                "graceful-restart": {
+                    "graceful-restart": False,
+                }
+            }
+        },
+        "r3": {
+            "bgp": {
+                "local_as": "300",
+                "graceful-restart": {
+                    "graceful-restart": False
+                }
+            }
+        }
+    }
+    configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name,dut='r3', peer='r2')
+
+    step("Verify Graceful-restart-disable at R3")
+    for addr_type in ADDR_TYPES:
+        result = verify_graceful_restart(tgen, topo, addr_type, input_dict,
+                                         dut='r3', peer='r2')
+        assert result is True, \
+            "Testcase {} :Failed \n Error {}". \
+                format(tc_name, result)
+
+    for iteration in range(5):
+        step("graceful-restart-disable:True  at R3")
+        input_dict = {
+        "r3": {
+            "bgp": {
+                "graceful-restart": {
+                    "graceful-restart-disable": True,
+                }
+            }
+            }
+        }
+        configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name,
+                                   dut='r3', peer='r2')
+
+        step("Verifying  Routes at R2 on enabling GRD")
+        dut = 'r2'
+        for addr_type in ADDR_TYPES:
+            input_dict_1= {'r2': topo['routers']['r2']}
+            result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1)
+            assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result)
+
+        step("Verify stale Routes in Router R2 enabling GRD")
+        for addr_type in ADDR_TYPES:
+            dut = "r2"
+            protocol = "bgp"
+            verify_nh_for_static_rtes = {
+                "r3": {
+                    "static_routes": [
+
+                        {
+                            "network": [NETWORK1_1[addr_type]],
+                            "no_of_ip": 2,
+                            "vrf": "RED"
+                        }
+                    ]
+                }
+            }
+            bgp_rib_next_hops = verify_stale_routes_list(
+            tgen, addr_type, dut, verify_nh_for_static_rtes)
+            assert (len(bgp_rib_next_hops)== 1) is True, "Testcase {} : Failed \n Error: {}".format(
+             tc_name, bgp_rib_next_hops,expected=True)
+
+        step("graceful-restart-disable:False at R3")
+        input_dict = {
+        "r3": {
+            "bgp": {
+                "graceful-restart": {
+                    "graceful-restart-disable": False,
+                }
+            }
+            }
+        }
+        configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name,
+                                   dut='r3', peer='r2')
+
+        step("Verifying  Routes at R2 on disabling GRD")
+        dut = 'r2'
+        for addr_type in ADDR_TYPES:
+            input_dict_1= {'r2': topo['routers']['r2']}
+            result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1)
+            assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result)
+
+        step("Verify stale Routes in Router R2 on disabling GRD")
+        for addr_type in ADDR_TYPES:
+            dut = "r2"
+            protocol = "bgp"
+            verify_nh_for_static_rtes = {
+                "r3": {
+                    "static_routes": [
+
+                        {
+                            "network": [NETWORK1_1[addr_type]],
+                            "no_of_ip": 2,
+                            "vrf": "RED"
+                        }
+                    ]
+                }
+            }
+            bgp_rib_next_hops = verify_stale_routes_list(tgen, addr_type, dut, verify_nh_for_static_rtes)
+
+            stale_route_status=len(bgp_rib_next_hops)== 1
+            assert stale_route_status is True, "Testcase {} : Failed \n Error: {}".format(
+             tc_name, stale_route_status,expected=True)
+    write_test_footer(tc_name)
+