Date: Sun, 30 May 2010 18:39:39 +0200 From: Randy Bush <randy@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@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751