[c-nsp] Redundant default route, without round-robin routing

[Oliver Boehmer (oboehmer)]

Tim Franklin <> wrote on Friday, September 28, 2007 12:11 PM:

> On Thu, September 27, 2007 5:46 pm, Vincent De Keyzer wrote:
> 
>> To answer Tim's question: I don't really care, traffic can go to
>> both A and B, or go to A and then B if A fails: what I care for is
>> out-of-sequence packets.
> 
> In that case, I'd be inclined to iBGP-mesh all the boxes, inject just
> a default into BGP from the two border routers, and let all the other
> routers pick their 'best' route of the two.  All other things being
> equal, this should be the border router that can be reached with the
> lowest IGP cost, or if they're all on a shared medium (I think this
> was the case from your original post), first route received. 

Even if you reach both next-hops via the same outgoing interface, IOS
will load-share between both of them. CEF will see two adjacencies, no
matter if they share the same interface.

	oli