[c-nsp] bgp connection refused

[David Prall]

I would suspect because you are using the outgoing interface as the source
address, instead of a loopback. You need to add update-source loopback X. As
well you have ebgp-multihop defined for an ibgp peering within a peer-group
definition. A peer-group definition can be either ibgp or ebgp, but not
both. That could be causing an issue but I doubt it.

David

--
http://dcp.dcptech.com
  

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net 
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of O S
> Sent: Wednesday, September 05, 2007 1:23 PM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] bgp connection refused
> 
> Hi all,
> 
> This should be simple but I failed to find out why.  I have 
> two cisco routers 
> connected via an eth--l2 mpls--eth.  But the bgp connections 
> between two 
> routers are refused.  Any help will be appreciated.
> 
> Thanks,
> 
> OS
> 
> router-a (c3825-advipservicesk9-mz.124-9.T3.bin):
> 
> router bgp 65470
>  no synchronization
>  bgp router-id 10.170.130.1
>  bgp log-neighbor-changes
>  neighbor GRP1 peer-group
>  neighbor GRP1 remote-as 65470
>  neighbor GRP1 ebgp-multihop 4
>  neighbor GRP1 version 4
>  neighbor GRP1 next-hop-self
>  neighbor GRP1 soft-reconfiguration inbound
>  neighbor 10.170.150.9 peer-group GRP1
>  no auto-summary
> 
> router-a#show ip ro 10.170.150.9
> Routing entry for 10.170.150.9/32
>   Known via "ospf 1", distance 110, metric 2501, type intra area
>   Last update from 10.170.132.18 on GigabitEthernet0/1.254, 1d08h ago
>   Routing Descriptor Blocks:
>   * 10.170.132.18, from 10.170.150.9, 1d08h ago, via 
> GigabitEthernet0/1.254
>       Route metric is 2501, traffic share count is 1
> 
> router-b (7206VXR c7200-is-mz.122-14.S.bin)
> 
> router bgp 65470
>  no synchronization
>  bgp router-id 10.170.150.9
>  bgp log-neighbor-changes
>  neighbor GRP1 peer-group
>  neighbor GRP1 remote-as 65470
>  neighbor GRP1 ebgp-multihop 4
>  neighbor GRP1 next-hop-self
>  neighbor GRP1 version 4
>  neighbor GRP1 soft-reconfiguration inbound
>  neighbor 10.170.130.1 peer-group GRP1
>  no auto-summary
> 
> router-b#show ip ro 10.170.130.1
> Routing entry for 10.170.130.1/32
>   Known via "ospf 1", distance 110, metric 2501, type inter area
>   Last update from 10.170.132.17 on FastEthernet2/0.254, 1d08h ago
>   Routing Descriptor Blocks:
>   * 10.170.132.17, from 10.170.130.1, 1d08h ago, via 
> FastEthernet2/0.254
>       Route metric is 2501, traffic share count is 1
> 
> debug ip bgp all show the connection was refused (don't know why)
> Sep  5 17:15:50.359 GMT: BGP: 10.170.150.9 open active, local 
> address 10.170.132.17
> Sep  5 17:15:50.595 GMT: BGP: 10.170.150.9 open failed: 
> Connection refused by remote host, open active delayed 
> 33871ms (35000ms max, 28% jitter)
> 
> 
> 
> 
> 
> 
>       
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