Hi,
I have 2 x Cisco 6509-E switches running BGP for IPv6 with my ISP. Bizarrely, the BGP session establishes fine, but i do not learn any prefixes after the session is established. That is, until i add the 'neighbor x:x:x:x::y ebgp-multihop 2' command. I cant figure out why. There neighbors are directly connected.
router bgp 12345
no bgp fast-external-fallover
no bgp default ipv4-unicast
no bgp enforce-first-as
bgp log-neighbor-changes
neighbor 2001:x:x:x::8 remote-as 54321
neighbor 2001:x:x:x::8 ebgp-multihop 2
neighbor 2001:x:x:x::8 password blahblahblah
address-family ipv6
neighbor 2001:x:x:x::8 activate
neighbor 2001:x:x:x::8 send-community
neighbor 2001:x:x:x::8 allowas-in
neighbor 2001:x:x:x::8 soft-reconfiguration inbound
neighbor 2001:x:x:x::8 prefix-list PL_INBLAH_v6 in
neighbor 2001:x:x:x::8 prefix-list PL_OUBLAH_v6 out
neighbor 2001:x:x:x::8 route-map RM_BLAH in
without ' neighbor 2001:x:x:x::8 ebgp-multihop 2' i see:
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
2001:x:x:x::8 4 54321 34343 4343 343436 0 0 00:04:32 0 <------------------------ ISSUE
with ' neighbor 2001:x:x:x::8 ebgp-multihop 2' i see:
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
2001:x:x:x::8 4 54321 34343 4343 343436 0 0 00:00:32 20146 <----------------- OK
when debugging 'debug bgp ipv6 un 2001:x:x:x::8 updates' - without ebgp-multihop cmd, i get these messages:
911888: Dec 11 10:37:27: BGP(1): 2001:x:x:x::8 rcv UPDATE about 2405:y:y::/48 -- DENIED due to: martian MP_REACH NEXTHOP;
looking at this - i am guessing a code bug..?
