On Friday 14 January 2005 15:59, McCallum, Robert wrote:
hmmmmm isnt that the bgp router-id?
Indeed, it is! You're right... I guess I'm having one of those days :-\.
Mark.
I though bgp like any other protocol
would take the outgoing interface.
Robert McCallum
-----Original Message-----
From: Mark Tinka [mailto:mti...@africaonline.co.sz]
Sent: 14 January 2005 13:46
To: cisc...@puck.nether.net; Piltrafilla
Subject: Re: [c-nsp] Source address on BGP peering set up
On Friday 14 January 2005 15:14, Piltrafilla wrote:
Hello.
Anyone knows how BGP on a Cisco router choose source IP address for
peering establishment if no "update-source" command is applied to
neighbor? Is it only the primary IP address on the closest
interface
Without manually specifying your source interface, BGP will
find and use the
Loopback interface with the highest IP address. Failing that,
it will take
the next highest IP address configured on the router (regardless of
interface).
This can become a problem, especially if you keep
adding/removing IP addresses
on your router (customers, new routers, new segments,
e.t.c.), hence the
elegance of 'update-source'.
19 messages in net.nether.puck.cisco-nsp[c-nsp] Source address on BGP peering...
