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Diffstat (limited to 'doc/user/pim.rst')
| -rw-r--r-- | doc/user/pim.rst | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/doc/user/pim.rst b/doc/user/pim.rst index f4611c520b..17bf44fdba 100644 --- a/doc/user/pim.rst +++ b/doc/user/pim.rst @@ -8,7 +8,8 @@ PIM -- Protocol Independent Multicast *pimd* supports pim-sm as well as igmp v2 and v3. pim is vrf aware and can work within the context of vrf's in order to -do S,G mrouting. +do S,G mrouting. Additionally PIM can be used in the EVPN underlay +network for optimizing forwarding of overlay BUM traffic. .. _starting-and-stopping-pimd: @@ -333,10 +334,12 @@ cause great confusion. Display information about interfaces PIM is using. -.. index:: show ip pim join +.. index:: show ip pim [vrf NAME] join [A.B.C.D [A.B.C.D]] [json] .. clicmd:: show ip pim join - Display information about PIM joins received. + 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. .. index:: show ip pim local-membership .. clicmd:: show ip pim local-membership @@ -383,10 +386,11 @@ cause great confusion. Display information about known S,G's and incoming interface as well as the OIL and how they were chosen. -.. index:: show ip pim upstream +.. index:: show ip pim [vrf NAME] upstream [A.B.C.D [A.B.C.D]] [json] .. clicmd:: show ip pim upstream - Display upstream information about a S,G mroute. + Display upstream information about a S,G mroute. Allow the user to + specify sub Source and Groups that we are only interested in. .. index:: show ip pim upstream-join-desired .. clicmd:: show ip pim upstream-join-desired @@ -495,3 +499,23 @@ Clear commands reset various variables. .. clicmd:: clear ip pim oil Rescan PIM OIL (output interface list). + +PIM EVPN configuration +====================== +To use PIM in the underlay for overlay BUM forwarding associate a +multicast group with the L2 VNI. The actual configuration is based +on your distribution. Here is an ifupdown2 example - +auto vx-10100 +iface vx-10100 + vxlan-id 10100 + bridge-access 100 + vxlan-local-tunnelip 27.0.0.11 + vxlan-mcastgrp 239.1.1.100 >>>>>>>> +PIM will see the vxlan configuration and auto configure state to properly +forward BUM traffic. + +PIM also needs to be configured in the underlay to allow the BUM MDT to +be setup. This is existing PIM configuration - +- Enable pim on the underlay L3 interface via the "ip pim" command. +- Configure RPs for the BUM multicast group range. +- Ensure the PIM is enabled on the lo of the VTEPs and the RP. |