ExtremeSwitching (EXOS)

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IPv6 IBGP Loopback peering

  • 1.  IPv6 IBGP Loopback peering

    Posted 08-17-2017 12:39
    I'm trying to setup ibgp ipv6 between two x460-g2 running version 22.2.1.5-patch1-4

    I have two ebgpipv6 neigh on one router and one ibgp ipv6 neigh on the other router.

    The router with ebgp receives a default :./0 from the upstream provider.

    I annononce the default route route thru ebgp to a customer just fine.

    Ex
    enable bgp neighbor X address-family ipv6-unicast originate-default

    However between the ibgp speakers nothing is announced.
    Since it's ibgp I have a igp ( ospv3) that has full connectivity between the ibgp routers I can ping and have reachability between the ipv6 loopback interfaces ( that I have assigned)

    Below is the snippet of the bgp config
    create bgp neighbor X remote-AS-number 12345
    enable bgp neighbor X
    disable bgp neighbor X capability ipv4-unicast
    disable bgp neighbor X capability ipv4-multicast
    configure bgp neighbor X address-family ipv6-unicast send-community both
    enable bgp neighbor X address-family ipv6-unicast soft-in-reset
    configure bgp neighbor X source-interface ipaddress X

    I can mention that the exact same thing works like a charm with ipv4.
    The default I get from the upstream is announced to my ibgp peer and I peer over the loopbacks.

    Can you see any errors or mistakes ?
    If not I will open a case.



  • 2.  RE: IPv6 IBGP Loopback peering

    Posted 08-17-2017 17:30
    Hi,

    I usually like to check what one peer is sending and what the other is receiving, but you may want to check your next-hop first (next-hop self).


  • 3.  RE: IPv6 IBGP Loopback peering

    Posted 08-24-2017 05:20
    The problem was caused by ipv6-unicast capability was not enabled on both ibgp switches.
    https://gtacknowledge.extremenetworks.com/articles/Solution/Bgp-ipv6-networks-not-transmitted-to-bgp...