[j-nsp] iBGP impacting eBGP

Pekka Savola pekkas at netcore.fi
Mon Nov 5 12:48:51 EST 2007


On Mon, 5 Nov 2007, Jad KAROUT wrote:
> However due to changes in our architecture, the iBGP session is no
> longer needed and must be removed. I tried to do that by deleting the
> corresponding group in the BGP conf as it is now useless.
> However, the second i commit that change, the M7i stops announcing
> our prefix to the two eBGP peers.
>
> I don't understand how removing an iBGP session can impact eBGP
> sessions ?

A couple of rhetorical questions:

  - what is the import policy from the internal peer?
  - which prefixes are you receiving from the internal peer?
  - what are the nexthops of the routes you export upstream?
  - where do you get the routes for those nexthops?

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings


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