load sharing algorithm selection in 12008

[szlizm]

Did anybody here ever use "ip cef load-sharing algorithm"?

In my experiment, two 12008 routers are connected through two pos oc-3 links, which are bundled. I'm using 4 pairs of source-destination hosts located both sides of routers to test TCP throughput. Per-destination load balancing is chosen. The weird thing is all packets for a certain source-destination pair will go through the same link, even though I changed different load sharing algorithms (original, tunnel, or universal). Why? are there any other configuration to be done except "ip cef load-sharing algorithm ---"? I have tried to do some investigation through internet, but only a few words are mentioned in cisco website, which has no help.

I really appreciate if someone can help me out.

[Harold Ritter]

Usually, the more flows (src,dst) you have the better spread of the workload you get. A combinaison of 4 pairs just won't do it. If you want to find out which link is used given a src, dst pair, use the following command:

show ip cef exact-route

Hope this helps.