Mikrotik BGP Question

Florian Weimer fw at deneb.enyo.de
Mon May 24 09:34:40 UTC 2010

* 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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