12-01-2009 06:34 AM - edited 03-04-2019 06:50 AM
Hello Everyone,
I have a router that is a stub, it's a 7200 series (old model) that is connected to another router (which is acting like it's gateway) model 7300 series.
There connection between both routers is a POS, and everything is working fine.
When we attempted to add another POS circuit therefore trying to create redundancy we noticed that the CPU on the 7200 series router is increasing with the increase in traffic.
I'm suspecting that the 7200 has a hard time load-balacing the 2 links, because as of now ISIS is what is balancing the traffic.
I was thinking of introducing CEF, but I don't know if it's possible.
Any Suggestions??
Mav
12-01-2009 07:15 AM
Hello Paolo,
a C7200 is software based and adding a second POS STM-1 to it is not a minor change.
What you see is probably normal for this kind of device.
CEF load balancing is efficient here the problem should be that CEF tables cannot be loaded on ASICs to perform HW based forwarding there is just the main cpu.
There are few cases where it is needed to disable CEF and your scenario should be not one of them.
Hope to help
Giuseppe
12-02-2009 01:10 AM
Ciao,
I didn't quite understand your last statement could you clarify?
"There are few cases where it is needed to disable CEF and your scenario should be not one of them."
My situation is or is not one of them?
Thanks again for all your help
PR
12-02-2009 01:41 AM
Hello Paolo,
sorry if it was unclear
in your case CEF has to be kept enabled on all interfaces and in global mode
Hope to help
Giuseppe
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: