nanog mailing list archives

Re: Mikrotik BGP Question


From: Florian Weimer <fw () deneb enyo de>
Date: Mon, 24 May 2010 11:34:40 +0200

* George Bonser:

Well, I believe the original poster said that one of his colleagues
swore that BGP multihoming wouldn't work unless both feeds terminated on
the same router.  I suppose said colleague has never heard of iBGP
between two routers of the local AS. Those two routers should probably
take a full table and exchange them between the two but going inside the
network, yeah, they should probably simply originate a default into the
the ospf routing.

Does this really work that well?  Won't you still get loops or
blackholes unless the eBGP routes on all border routers are identical?

I think you also need iBGP speakers along all feasible paths between
eBGP speakers.


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