RE: Ospf redistrib into eigrp - 2 locations

Thanks Carlos, That might be, however it didn't exactly seem that way in
what I saw...

Router 1 and 3 where the two routers redistributing ospf into
eigrp.....router 2 was the one router solely running eigrp. Router 1, 3 and
2 share a vlan with one another.

if I didn't tell you before, router 1 and 3 are both connected to the same
WAN/OSPF side...learning much the same routes as each other....so point is
that they should be redis'ing the same set of routes into eigrp to that
router 2 that I mention. Also, I'm running a route-map upon redis at router
1 and 3 and setting same metrics to be fed into eigrp to router 2.

When I redistributed from both routers 1 and 3 simultaneously I wanted to
see dual equal cost routes in router 2. I didn't. so, I removed
redistribution on router 1....then looked at router 2's metric for a route
learned via router 3. Say it was 12345678. Then I removed redis from
router 3 and enabled redis on router 1....then looked at router 2's metric
for a route learned via router 1. Say it was 12345678. ...point is, it
seems that when singularly redis'ing from 1 or 3, 2 sees same metric.
That's why it didn't appear that the network router 2 was seeing was further
away (metrically) via 1 compared to 3 or vice versa.

I'm still undergoing my learning in the area of redistributing routing info
in such a way that it could be back-fed via another router on same LAN
segment (BMA) or NBMA network perhaps which is connected back into the area
of the network that the redis'ing router is....so I don't know the details
enough to appreciate what exactly was going on, but it would seem that you
wouldn't want router 1 to send routes to router 3 or vice versa that they
already know about since they are both connected to the same WAN..... with
that in mind, I did the following to filter out route info on router 1 and 3
so they wouldn't learn anything from each other, but still be able to redis
their ospf info into the vlan shared with router 2....
 
"distribute-list in f1/1" on router 1 and 3. F1/1 is the interface on both
of those that connects to the vlan that they both share with router 2.

Now router 2 sees equal cost routes.

I don't really know why not having a distribute list filtering out route
info from router 1 and 3 would've caused router 2 to NOT have the dual equal
cost routes.....but this fixed it.

Aaron

-----Original Message-----
From: Carlos G Mendioroz [mailto:tron_at_huapi.ba.ar]
Sent: Saturday, March 05, 2011 11:57 AM
To: Aaron
Cc: ccielab_at_groupstudy.com
Subject: Re: Ospf redistrib into eigrp - 2 locations

Cause the distance from that router to the redistribution places is
different ?

-Carlos

Aaron @ 05/03/2011 13:36 -0300 dixit:
> I'm trying to redistrib ospf into eigrp at 2 locations; and at those 2
locations i set metrics to be 1 1 1 1 1
> There is a third router in the eigrp AS , purely eigrp. Wondering why
that third router is not seeing 2 equal cost routes in its routing table
(rib) from each of my 2 redistrib locations.?
>
> Aaron
>
>
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-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net