One reason I can think of is that ebgp-multihop (in the lab) allows me to peer to a remote router's loopback interface. This can somewhat overcome situations wherein the main link can be down, but there still exists another link in which I can keep the neighborship up for whatever reason. As BGP runs on top of TCP, peering will still be up as long as there is another path to the remote router's loopback interface. ie. multi-homed BGP applications.
I'm sure there are some more advantages and disadvantages of using such design in the real world. But I would guess that the guys from Cisco (or the geniuses who designed BGP), put ebgp-multihop in there as a feature not to be mandatorily used, but to overcome some unavoidable situations. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=66128&t=66127 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
