My colleague and i are struggling to originate a IPv6 BGP default route from one of our core switches to an eBGP peer.
This is the configuration (below) we have tried and does work within GNS3 running the same IOS but it doesn't seem to work on our live environment.
router bgp XXXX
bgp router-id 184.108.40.206
neighbor x:x:6:11::1 remote-as 65003
neighbor x:x:6:11::1 activate
neighbor x:x:6:11::1 prefix-list 65003-out out
ipv6 route ::/0 Null0
ipv6 prefix-list 65003-out seq 5 permit ::/0
When we reverse the above configuration, so we send a IPv6 Default BGP route from the customer to the core the above configuration works, however, the core see's the route as ::/8 not ::/0 (very strange). Has anybody seen this before? This doesn't make sense as on the customer infrastructure we can see ::/0 in the BGP table but on the core we see ::/8. We are thinking because the core is seeing the route as::/8 this is having an affect when we are trying to originate ::/0 from the core to the customer..
Maybe this is a bug but we're not sure. Anybody seen this before?
Hi Paul, thanks for the response. We have tried that it doesn't work.
We have just found out the switch has a problem dealing with a bogus route ::/8 and the default route ::/0. If we drop ::/8 on the edge ::/0 appears in the routing table, if we permit ::/8 ::/0 drops out. We will be logging this with Cisco.
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