nanog mailing list archives

Re: eBGP Multihop


From: Tony Li <tony.li () tony li>
Date: Fri, 3 Sep 2010 12:36:36 -0700


On Sep 2, 2010, at 2:30 AM, Graham Beneke wrote:

I have been asked to investigate moving an entire network to multi-hop on all the eBGP sessions. Basically all 
upstreams, downstreams and peers will eBGP with a route reflector located in the core. This RR will be some kind of 
quagga or similar box. The dev guys want to be able to poke at the BGP feeds directly and do *magic* that standard 
router aren't capable of.

My gut feel is that this is a bad idea. Besides anything else it makes sane link state detection very challenging - 
especially where we have multiple sessions with a peer.

Is their any BCP or operational experience that agrees or disagrees with my gut. ;-)


Multihop eBGP is a debugging tool that a developer left in the production code.

Tony



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