4 Apr
2013
4 Apr
'13
4:43 p.m.
Even if the exchange does not advertise the exchange LAN, it's probably the case that it is in the IGP (or at least IBGP) of everyone connected to it,
yikes! this is quite ill-advised and i don't know anyone who does this, but i think all my competitors should.
I have experience of several networks where that is not the case. IGP carries routes for loopback and internal-facing interfaces;
i have seen some carry external because, for some reason, they do not want to re-write next-hop at the border. randy