On Wed, 2010-08-25 at 01:02 -0500, Richard A Steenbergen wrote: > BFD is an IP based protocol, it's completely ignorant of L2 multipath > and will almost always get hashed over a single link arbitrarily.
Cisco may view it as only L3 relevant, but from RFC 5882 section 2: > Its sole purpose is to verify connectivity between a pair of systems, > for a particular data protocol across a path (which may be of any > technology, length, or OSI layer). So theoretically BFD could be used for fast detection of loss of a L2 link. I would actually very much like to have something like BFD for L2. When constructing EoMPLS paths through the network failover (seen from between two "CE" devices) can be oh-so-slow, with RSTP (~6 sec) and UDLD (~5 sec) being the quickest to discover loss of connectivity. Or did I overlook something? -- Peter _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
