Route Selection with EIGRP ----- multiple summary addresses

From: Hemant_Kumar@BERLEX.COM
Date: Thu Oct 02 2003 - 16:03:05 GMT-3


Hi All,

I have router connected to 2 AS (AS3 and AS20). Serial 3 is connected to
AS3 and serial 1 is connected AS20.
I have subnets 10.0.0.0/12 connected to the ethernet interface of the same
router. (eg 10.5.10.x,10.15.1.x etc).
Now i want to propagate only summary route of 10.0.0.0/12 via serial 3 and
Serial 1. I have placed the " ip eigrp summary address" command on each
of the serial links. Note both of them on different AS.

I know after implmenting this command, router will automatically add a
route of 10.0.0.0/12 and point it to null interface.

Since i have 2 of these statements (one on each serial interface), there
will be two of above routes....which of these routes will be installed in
the routers routing table. Is it the one from serial 1 or serial 3. What
is the discision criteria for the selection.

Please help, this is causing a big problem in my network.

thanks
Hemant

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