EBGP Multihop's necessity with loopback addresses

From: Paglia, John (USPC.PCT.Hopewell) (JPaglia@NA2.US.ML.com)
Date: Wed Oct 16 2002 - 17:00:39 GMT-3


I recently heard that if you are establishing your BGP neighbors using
'update source loopback 0', you should also use the 'ebgp-mu' cmd, even if
the neighbors are directly connected...the reason being that your loopback
is NOT directly connected to the neighbor. However, in my experiments I have
never done this for neighbors that are directly connected, yet have
established peerings successfully.

Is there validity to this statement, and if so, under which circumstances is
it absolutely vital, other than the 'non-physically or nbma topology'
scenarios??? Something tells me that this may be an older IOS issue or
something like that.

John



This archive was generated by hypermail 2.1.4 : Tue Nov 05 2002 - 08:35:48 GMT-3