For BFD to work, you need: * ISR + 12.4(15)T (or later) * 7200 with 12.4T or 12.2SRx * 7600/6500/GSR + 12.2SRB (or later) * ASR A complete list is at the bottom of this document: http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fs_bfd.html You'll find some more BFD details and usage guidelines here: http://www.nil.com/ipcorner/bfd/ Best regards Ivan http://www.ioshints.info/about http://blog.ioshints.info/
Correct me if I'm wrong, but wasn't this exactly the type of situation that BFD was designed to detect and help with?
I don't know, but I'm printing it[1] anyway to take home and read. It's been mentioned a few times, and clearly worth learning about.
Thanks,
Steve
[1] http://bgp.potaroo.net/ietf/all-ids/draft-ietf-bfd-v4v6-1hop-09.txt