Not necessarily. Recall that with eBGP sessions it is typical
to peer with the physical address. There are times when you
want to use the lo0 for eBGP (two parallel links, etc.) but
you'll need to specify both ebgp_multihop and define a route
to the peer's loopback.
Priscilla Oppenheimer wrote:
What's with the update-source Loopback0 that you see popping up in BGP
examples in books and white papers with no explanation? :-) What does it
mean?
For example
router bgp 75
neighbor 10.100.65.1 remote-as 50
neighbor 10.100.65.1 update-source Loopback0
The example I'm looking at is much more complicated and I can tell you more
if you need me to, but I don't know if the rest of the stuff is relevant to
my question about this update-source parameter.
Wouldn't the router use the Loopback anyway for sending BGP messages?
Thanks
Priscilla
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