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diff --git a/doc/user/pimv6.rst b/doc/user/pimv6.rst new file mode 100644 index 0000000..843734e --- /dev/null +++ b/doc/user/pimv6.rst @@ -0,0 +1,458 @@ +.. _pimv6: + +***** +PIMv6 +***** + +PIMv6 -- Protocol Independent Multicast for IPv6 + +*pim6d* supports pim-sm as well as MLD v1 and v2. PIMv6 is +vrf aware and can work within the context of vrf's in order to +do S,G mrouting. + +.. _starting-and-stopping-pim6d: + +Starting and Stopping pim6d +=========================== + +The default configuration file name of *pim6d*'s is :file:`pim6d.conf`. When +invoked *pim6d* searches directory |INSTALL_PREFIX_ETC|. If +:file:`pim6d.conf` is not there then next search current directory. + +*pim6d* requires zebra for proper operation. Additionally *pim6d* depends on +routing properly setup and working in the network that it is working on. + +:: + + # zebra -d + # pim6d -d + + +Please note that *zebra* must be invoked before *pim6d*. + +To stop *pim6d* please use:: + + kill `cat /var/run/pim6d.pid` + +Certain signals have special meanings to *pim6d*. + ++---------+---------------------------------------------------------------------+ +| Signal | Meaning | ++=========+=====================================================================+ +| SIGUSR1 | Rotate the *pim6d* logfile | ++---------+---------------------------------------------------------------------+ +| SIGINT | *pim6d* sweeps all installed PIM mroutes then terminates gracefully.| +| SIGTERM | | ++---------+---------------------------------------------------------------------+ + +*pim6d* invocation options. Common options that can be specified +(:ref:`common-invocation-options`). + +.. clicmd:: ipv6 pim rp X:X::X:X Y:Y::Y:Y/M + + In order to use pimv6, it is necessary to configure a RP for join messages to + be sent to. Currently the only methodology to do this is via static rp + commands. All routers in the pimv6 network must agree on these values. The + first ipv6 address is the RP's address and the second value is the matching + prefix of group ranges covered. This command is vrf aware, to configure for + a vrf, enter the vrf submode. + +.. clicmd:: ipv6 pim rp X:X::X:X prefix-list WORD + + This CLI helps in configuring RP address for a range of groups specified + by the prefix-list. + +.. clicmd:: ipv6 pim rp keep-alive-timer (1-65535) + + Modify the time out value for a S,G flow from 1-65535 seconds at RP. + The normal keepalive period for the KAT(S,G) defaults to 210 seconds. + However, at the RP, the keepalive period must be at least the + Register_Suppression_Time, or the RP may time out the (S,G) state + before the next Null-Register arrives. Thus, the KAT(S,G) is set to + max(Keepalive_Period, RP_Keepalive_Period) when a Register-Stop is sent. + If choosing a value below 31 seconds be aware that some hardware platforms + cannot see data flowing in better than 30 second chunks. This command is + vrf aware, to configure for a vrf, enter the vrf submode. + +.. clicmd:: ipv6 pim spt-switchover infinity-and-beyond [prefix-list PLIST] + + On the last hop router if it is desired to not switch over to the SPT tree + configure this command. Optional parameter prefix-list can be use to control + which groups to switch or not switch. If a group is PERMIT as per the + PLIST, then the SPT switchover does not happen for it and if it is DENY, + then the SPT switchover happens. + This command is vrf aware, to configure for a vrf, + enter the vrf submode. + +.. clicmd:: ipv6 pim join-prune-interval (1-65535) + + Modify the join/prune interval that pim uses to the new value. Time is + specified in seconds. This command is vrf aware, to configure for a vrf, + enter the vrf submode. The default time is 60 seconds. If you enter + a value smaller than 60 seconds be aware that this can and will affect + convergence at scale. + +.. clicmd:: ipv6 pim keep-alive-timer (1-65535) + + Modify the time out value for a S,G flow from 1-65535 seconds. If choosing + a value below 31 seconds be aware that some hardware platforms cannot see data + flowing in better than 30 second chunks. This command is vrf aware, to + configure for a vrf, enter the vrf submode. + +.. clicmd:: ipv6 pim packets (1-255) + + When processing packets from a neighbor process the number of packets + incoming at one time before moving on to the next task. The default value is + 3 packets. This command is only useful at scale when you can possibly have + a large number of pim control packets flowing. This command is vrf aware, to + configure for a vrf, enter the vrf submode. + +.. clicmd:: ipv6 pim register-suppress-time (1-65535) + + Modify the time that pim will register suppress a FHR will send register + notifications to the kernel. This command is vrf aware, to configure for a + vrf, enter the vrf submode. + +.. clicmd:: ipv6 ssmpingd [X:X::X:X] + + Enable ipv6 ssmpingd configuration. A network level management tool + to check whether one can receive multicast packets via SSM from host. + The host target given to ssmping must run the ssmpingd daemon which listens + for IPv4 and IPv6 unicast requests. When it receives one, it responds to a + well known SSM multicast group which ssmping just have joined. + +.. _pimv6-interface-configuration: + +PIMv6 Interface Configuration +============================= + +PIMv6 interface commands allow you to configure an interface as either a Receiver +or a interface that you would like to form pimv6 neighbors on. If the interface +is in a vrf, enter the interface command with the vrf keyword at the end. + +.. clicmd:: ipv6 pim active-active + + Turn on pim active-active configuration for a Vxlan interface. This + command will not do anything if you do not have the underlying ability + of a mlag implementation. + +.. clicmd:: ipv6 pim drpriority (1-4294967295) + + Set the DR Priority for the interface. This command is useful to allow the + user to influence what node becomes the DR for a lan segment. + +.. clicmd:: ipv6 pim hello (1-65535) (1-65535) + + Set the pim hello and hold interval for a interface. + +.. clicmd:: ipv6 pim + + Tell pim that we would like to use this interface to form pim neighbors + over. Please note that this command does not enable the reception of MLD + reports on the interface. Refer to the next ``ipv6 mld`` command for MLD + management. + +.. clicmd:: ipv6 pim use-source X:X::X:X + + If you have multiple addresses configured on a particular interface + and would like pim to use a specific source address associated with + that interface. + +.. clicmd:: ipv6 pim passive + + Disable sending and receiving pim control packets on the interface. + +.. clicmd:: ipv6 mld + + Tell pim to receive MLD reports and Query on this interface. The default + version is v2. This command is useful on a LHR. + +.. clicmd:: ipv6 mld join X:X::X:X [Y:Y::Y:Y] + + Join multicast group or source-group on an interface. + +.. clicmd:: ipv6 mld query-interval (1-65535) + + Set the MLD query interval that PIM will use. + +.. clicmd:: ipv6 mld query-max-response-time (1-65535) + + Set the MLD query response timeout value. If an report is not returned in + the specified time we will assume the S,G or \*,G has timed out. + +.. clicmd:: ipv6 mld version (1-2) + + Set the MLD version used on this interface. The default value is 2. + +.. clicmd:: ipv6 multicast boundary oil WORD + + Set a PIMv6 multicast boundary, based upon the WORD prefix-list. If a PIMv6 + join or MLD report is received on this interface and the Group is denied by + the prefix-list, PIMv6 will ignore the join or report. + +.. clicmd:: ipv6 mld last-member-query-count (1-255) + + Set the MLD last member query count. The default value is 2. 'no' form of + this command is used to configure back to the default value. + +.. clicmd:: ipv6 mld last-member-query-interval (1-65535) + + Set the MLD last member query interval in deciseconds. The default value is + 10 deciseconds. 'no' form of this command is used to to configure back to the + default value. + +.. clicmd:: ipv6 mroute INTERFACE X:X::X:X [Y:Y::Y:Y] + + Set a static multicast route for a traffic coming on the current interface to + be forwarded on the given interface if the traffic matches the group address + and optionally the source address. + +.. _show-pimv6-information: + +Show PIMv6 Information +====================== + +All PIMv6 show commands are vrf aware and typically allow you to insert a +specified vrf command if information is desired about a specific vrf. If no +vrf is specified then the default vrf is assumed. Finally the special keyword +'all' allows you to look at all vrfs for the command. Naming a vrf 'all' will +cause great confusion. + +PIM protocol state +------------------ + +.. clicmd:: show ipv6 pim [vrf NAME] group-type [json] + + Display SSM group ranges. + +.. clicmd:: show ipv6 pim interface + + Display information about interfaces PIM is using. + +.. clicmd:: show ipv6 pim [vrf NAME] join [X:X::X:X [X:X::X:X]] [json] +.. clicmd:: show ipv6 pim vrf all join [json] + + Display information about PIM joins received. If one address is specified + then we assume it is the Group we are interested in displaying data on. + If the second address is specified then it is Source Group. + +.. clicmd:: show ipv6 pim [vrf NAME] local-membership [json] + + Display information about PIM interface local-membership. + +.. clicmd:: show ipv6 pim [vrf NAME] neighbor [detail|WORD] [json] +.. clicmd:: show ipv6 pim vrf all neighbor [detail|WORD] [json] + + Display information about PIM neighbors. + +.. clicmd:: show ipv6 pim [vrf NAME] nexthop + + Display information about pim nexthops that are being used. + +.. clicmd:: show ipv6 pim [vrf NAME] nexthop-lookup X:X::X:X X:X::X:X + + Display information about a S,G pair and how the RPF would be chosen. This + is especially useful if there are ECMP's available from the RPF lookup. + +.. clicmd:: show ipv6 pim [vrf NAME] rp-info [json] +.. clicmd:: show ipv6 pim vrf all rp-info [json] + + Display information about RP's that are configured on this router. + +.. clicmd:: show ipv6 pim [vrf NAME] rpf [json] +.. clicmd:: show ipv6 pim vrf all rpf [json] + + Display information about currently being used S,G's and their RPF lookup + information. Additionally display some statistics about what has been + happening on the router. + +.. clicmd:: show ipv6 pim [vrf NAME] secondary + + Display information about an interface and all the secondary addresses + associated with it. + +.. clicmd:: show ipv6 pim [vrf NAME] state [X:X::X:X [X:X::X:X]] [json] +.. clicmd:: show ipv6 pim vrf all state [X:X::X:X [X:X::X:X]] [json] + + Display information about known S,G's and incoming interface as well as the + OIL and how they were chosen. + +.. clicmd:: show ipv6 pim [vrf NAME] upstream [X:X::X:X [Y:Y::Y:Y]] [json] +.. clicmd:: show ipv6 pim vrf all upstream [json] + + Display upstream information about a S,G mroute. Allow the user to + specify sub Source and Groups that we are interested in. + +.. clicmd:: show ipv6 pim [vrf NAME] upstream-join-desired [json] + + Display upstream information for S,G's and if we desire to + join the multicast tree + +.. clicmd:: show ipv6 pim [vrf NAME] upstream-rpf [json] + + Display upstream information for S,G's and the RPF data associated with them. + +.. clicmd:: show ipv6 pim [vrf NAME] interface traffic [WORD] [json] + + Display information about the number of PIM protocol packets sent/received + on an interface. + +MLD state +--------- + +.. clicmd:: show ipv6 mld [vrf NAME] interface [IFNAME] [detail|json] + + Display per-interface MLD state, elected querier and related timers. Use + the ``detail`` or ``json`` options for further information (the JSON output + always contains all details.) + +.. clicmd:: show ipv6 mld [vrf NAME] statistics [interface IFNAME] [json] + + Display packet and error counters for MLD interfaces. All counters are + packet counters (not bytes) and wrap at 64 bit. In some rare cases, + malformed received MLD reports may be partially processed and counted on + multiple counters. + +.. clicmd:: show ipv6 mld [vrf NAME] joins [{interface IFNAME|groups X:X::X:X/M|sources X:X::X:X/M|detail}] [json] + + Display joined groups tracked by MLD. ``interface``, ``groups`` and + ``sources`` options may be used to limit output to a subset (note ``sources`` + refers to the multicast traffic sender, not the host that joined to receive + the traffic.) + + The ``detail`` option also reports which hosts have joined (subscribed) to + particular ``S,G``. This information is only available for MLDv2 hosts with + a MLDv2 querier. MLDv1 joins are recorded as "untracked" and shown in the + ``NonTrkSeen`` output column. + +.. clicmd:: show ipv6 mld [vrf NAME] groups [json] + + Display MLD group information. + +General multicast routing state +------------------------------- + +.. clicmd:: show ipv6 multicast + + Display various information about the interfaces used in this pim instance. + +.. clicmd:: show ipv6 multicast count [vrf NAME] [json] + + Display multicast data packets count per interface for a vrf. + +.. clicmd:: show ipv6 multicast count vrf all [json] + + Display multicast data packets count per interface for all vrf. + +.. clicmd:: show ipv6 mroute [vrf NAME] [X:X::X:X [X:X::X:X]] [fill] [json] + + Display information about installed into the kernel S,G mroutes. If + one address is specified we assume it is the Group we are interested + in displaying data on. If the second address is specified then it is + Source Group. The keyword ``fill`` says to fill in all assumed data + for test/data gathering purposes. + +.. clicmd:: show ipv6 mroute [vrf NAME] count [json] + + Display information about installed into the kernel S,G mroutes and in + addition display data about packet flow for the mroutes for a specific + vrf. + +.. clicmd:: show ipv6 mroute vrf all count [json] + + Display information about installed into the kernel S,G mroutes and in + addition display data about packet flow for the mroutes for all vrfs. + +.. clicmd:: show ipv6 mroute [vrf NAME] summary [json] + + Display total number of S,G mroutes and number of S,G mroutes installed + into the kernel for a specific vrf. + +.. clicmd:: show ipv6 mroute vrf all summary [json] + + Display total number of S,G mroutes and number of S,G mroutes + installed into the kernel for all vrfs. + +PIMv6 Clear Commands +==================== + +Clear commands reset various variables. + +.. clicmd:: clear ipv6 mroute + + Reset multicast routes. + +.. clicmd:: clear ipv6 mroute [vrf NAME] count + + When this command is issued, reset the counts of data shown for + packet count, byte count and wrong interface to 0 and start count + up from this spot. + +.. clicmd:: clear ipv6 pim interfaces + + Reset PIMv6 interfaces. + +.. clicmd:: clear ipv6 pim [vrf NAME] interface traffic + + When this command is issued, resets the information about the + number of PIM protocol packets sent/received on an interface. + +.. clicmd:: clear ipv6 pim oil + + Rescan PIMv6 OIL (output interface list). + +.. clicmd:: clear ipv6 pim [vrf NAME] bsr-data + + This command will clear the BSM scope data struct. This command also + removes the next hop tracking for the bsr and resets the upstreams + for the dynamically learnt RPs. + +PIMv6 Debug Commands +==================== + +The debugging subsystem for PIMv6 behaves in accordance with how FRR handles +debugging. You can specify debugging at the enable CLI mode as well as the +configure CLI mode. If you specify debug commands in the configuration cli +mode, the debug commands can be persistent across restarts of the FRR pim6d if +the config was written out. + +.. clicmd:: debug pimv6 events + + This turns on debugging for PIMv6 system events. Especially timers. + +.. clicmd:: debug pimv6 nht + + This turns on debugging for PIMv6 nexthop tracking. It will display + information about RPF lookups and information about when a nexthop changes. + +.. clicmd:: debug pimv6 nht detail + + This turns on debugging for PIMv6 nexthop in detail. This is not enabled + by default. + +.. clicmd:: debug pimv6 packet-dump + + This turns on an extraordinary amount of data. Each pim packet sent and + received is dumped for debugging purposes. This should be considered a + developer only command. + +.. clicmd:: debug pimv6 packets + + This turns on information about packet generation for sending and about + packet handling from a received packet. + +.. clicmd:: debug pimv6 trace + + This traces pim code and how it is running. + +.. clicmd:: debug pimv6 zebra + + This gathers data about events from zebra that come up through the ZAPI. + +.. clicmd:: debug mroute6 + + This turns on debugging for PIMv6 interaction with kernel MFC cache. + +.. clicmd:: debug mroute6 detail + + This turns on detailed debugging for PIMv6 interaction with kernel MFC cache. |