[nsp] BGP: PM3 & Cisco 2524

From: jlixfeld@idirect.ca
Date: Tue Mar 17 1998 - 17:11:21 EST


I got a 2524, a PM3 and a 7206 all talking BGP to one another. The 2524
is advertising our head office network to our Core Cisco via a T1. The
2524 is advertising that same network to the PM3 over an ISDN line. I
have the Core Cisco seeing the advertisment from the 2524 over the T1 and
I have the PM3 seeing the advertisment from the 2524 over the ISDN. What
I do NOT have, however is the Core Cisco seeing the advertisment over the
ethernet from the PM3.

Here is sh bgp peers on the PM3:
liv3> sh bgp peer
   Remote IP AS Flg DH Up Accept Inject Advertise
-------------------------------------------------------------------
207.136.64.69 7271 -- Up all all
207.136.80.33 7271 -- Up all all all

64.69 is the 2524
80.33 is the Core network

For you Livingston gurus, I even added a summarization for that network.
I doubt you need it because if you need to add a summarization for each
network you learn from BGP in order for it to be advertised back out, that
is a pretty lame implementation of BGP.

Finally, here is the config for the PM3 neighbor on the Core Cisco:

 neighbor 207.136.80.119 remote-as 7271
 neighbor 207.136.80.119 soft-reconfiguration inbound
 neighbor 207.136.80.119 filter-list 1 out

It's not stopping anything from being advertised.

BGP: filter-list 1 is an as-path access-list permit .*

Anyone have any ideas?!

--
Regards,  

Jason A. Lixfeld jlixfeld@idirect.ca System Administrator [L5] jlixfeld@torontointernetxchange.net

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