When running a Bond between two NICs in Active-Backup mode, one NIC will remain active until it fails, then the slave is supposed to take over for it, but should this happen automatically? I'm running an HP DL380, OES2SP1, with dual NC373i Gigabit NICs, and when "testing", I disconnected the active NIC, and the second one did not take over. I waited about 2 or 3 minutes so see if it was just a delay or something, but never worked. Any suggestions or comments?

I've since changed to balance-rr which is fine, except that we've had serious performance issues trying to restore data to the server with bonding running in this mode.

Anything would be appreciated.