All, I had to setup a 2621 to do load balancing over 2 t1's with ospf. I know ospf does this on a basic simple default setup. So after setting this up everything seemed to be working great but one link was definately being used about 80% more than the other. So after doing some reasearch on cco I realized my problem I had ip route-cache turned on under the interface on both serial interfaces. According to http://www.cisco.com/warp/public/105/46.html it works alot better by turning this off so I did and was getting just about 50/50 load balancing accross both t1's. But in my quest of always trying to make the network more efficient I saw at the bottom of that page on the link above this statement below.
Newer switching schemes such as Cisco Express Forwarding (CEF) http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/s witch_c/xcprt2/xccefc.htm allow you to do per-packet and per-destination load-balancing more quickly. However, it does imply that you have the extra resources to deal with maintaining CEF entries and adjacencies. Refer to this Application Note for more information on load-sharing with CEF. So I went of the info on that URL to setup ip cef on the router and ip load sharing. But after clearing the counters and doing a show interface I could see all traffic going accross only one serial interface. I am using IOS 12.1 and I had ip cef turned on globally and on both interfaces locally as the doc stated, but only 1 link was being used. Any ideas why? , , /( )` \ \__ / | /- _ `-/ ' (/\/ \ \ /\ / / | ` \ O O ) | `-^--'`< ' MailServer (_.) _ ) / Powered `.___/` / by `-----' / OpenBSD <----. __ / __ \ <----|====O)))==) \) /============= <----' `--' `.__,' \ For Late Breaking Tech News and OpenSource HowTO's http://www.digitalrage.org -------------------------------------------- Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=32239&t=32239 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
