CEF and EIGRP

Hello, snipped-for-privacy@hotmail.com! You wrote on 4 Apr 2005 07:03:59 -0700:

t> Sorry about my english. I'm trying to get CEF per-packet balancing t> to work with EIGRP in a lab network. I have two unequal routes I t> want to share packets (same source and destination). I have t> understood that CEF makes its decisions based on routing table and t> EIGRP only keeps successors in its routing table. It started to t> work when I added two static routes.

t> topology table:

t> P 172.16.5.0/24, 1 successors, FD is 2195456, serno 168 t> via 172.16.2.2 (2195456/281600), Serial1 t> via 172.16.1.2 (2733056/2221056), Serial0

I don't think it's going to work. 2221056 (reported distance through Serial 0) is more than 2195456 (feasible distance). From EIGRP point of view path through Serial 0 might be a loop. You have to have reported distance to be lower than feasible distance for both interfaces. Than you can play with variance to put both paths into routing table even if they have different cost.

With best regards, Andrey.

If the routing table present multiple paths to CEF with the same or different share weights, CEF will build loadbalance objects in accordance with these weights, and use that for both per-packet and per-destination load balancing.

/Jesper