Junos Asymmetric Routing

Kevin Oberman oberman at es.net
Sun May 30 12:16:14 CDT 2010


> Date: Sun, 30 May 2010 18:39:39 +0200
> From: Randy Bush <randy at psg.com>
> 
> > your perfectly fine multihop BGP session could break when rerouting
> > occurs.
> 
> one of the many reasons that there are no perfectly fine multi-hop bgp
> sessions.

I remember a posting to this list back in the late 90s from Tony Li, who
knows a bit about BGP. He urged that multi-hop BGP never be used and
pointed out that it had not been intended for use except as a test tool,
not a production one and should have been stripped from IOS before it
was shipped.

While there are a few good cases for using it, it is generally a bad,
bad idea. And this thread demonstrates that he had reason for the warning
-- 
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net			Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4  EADA 927D EBB3 987B 3751




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