[c-nsp] Multiple EIGRP processes (ASNs)

[Gert Doering]

Hi,

On Thu, Dec 09, 2010 at 03:51:20PM -0800, Yuri Bank wrote:
> Does anyone know of a way to make IOS see two distinct EIGRP processes (
> Different ASNs ) equally. The standard behavior (On my version of IOS at
> least) is to choose the route which was learned from the lower EIGRP ASN
> regardless of metric. I can influence which routes are chosen by
> manipulating the Administrative Distance in the EIGRP process, but this is
> very limited in control. I would like to use the EIGRP metric for more
> optimal routing.

I don't think this can be done.  After all, the whole *point* of having
two different EIGRP processes is to have, well, two independent EIGRP
processes - and each routing protocol will evaluate its own metrics only
inside its own process, and then feed the best prefix to the "master
routing table merger" (who checks administrative distance to decide).

(Cisco, of course.  Juniper does this differently)

It *might* work to redistribute from "eigrp 1" to "eigrp 2" and have
eigrp 2 be the master-decider with lowest AD.  But then, it might not 
work, or it might cause funny routing loops and break your network - test
in lab.

gert
-- 
USENET is *not* the non-clickable part of WWW!
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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