Given that the load sharing is per destination, I was curious if there was a way to offload traffic onto other, less utilized links without changing the cef/load balancing configuration. We have a lot of single-server to single-server backups that take place, and those backups tend to follow a single path. My thinking is that there would be a way to 'share' that load with other links.

I've read up on auto-bw but haven't given it much of a go just yet, though I think it might help.

Shawn,

if you are able to mark separate IP precedence bits on these different transfers, you could use Class Based Tunnel Selection (CBTS), which will select the egress tunnel based on the precedence bits, given that you have multiple tunnels to the given destination.

http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/gscbts.html

Regards