I thought I'd chip in as everyone else has had a go at this..
On Fri, 14 Jan 2005, Piltrafilla wrote:
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 to neighbor?
update-source will use the primary address, if no update source is applied it
will use the ip on the outgoing interface
For instance, let's say that you would like to set up a peering using a
secondary IP address to between two directly-connected neighbors. Is it
setting up loopbacks, static /32 routes and update-source on the neighbors'
config the only way to do it?
no you can just config it like any other ebgp directly connected peer
On bgpd of OpenBSD you could set up a "local-address" parameter per
neighbor or group that sets up source IP address used for that
peering. I haven't found any similar parameter on cisco bgp neighbors'
config.
it doesnt have it
Steve
19 messages in net.nether.puck.cisco-nsp[c-nsp] Source address on BGP peering...
