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Re: route for linx.net in Level3?
From: Randy Bush <randy () psg com>
Date: Fri, 05 Apr 2013 05:43:44 +0900

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


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