-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 28/09/2010 12:38, Alan Buxey wrote: > its trunk failover of link-state tracking. dont seem to have solidified the > name - appeared in IOS 12.2(25) - but has been around in the blade switches > for a little longer...and is in Nexus platform too for added bonus > > I'm thinking of a scenarios...a nice real scenario...where this would be > useful > rather than using spanning-tree and normal backup links..
I think we had one a while ago with the Microsoft NLB (Load Balancing). From what I recall heartbeats are not checked on all interfaces (in Server 2008). So if an upstream link on a top of rack switch goes down NLB will keep the local servers in the hash-pool causing dropped packets for connections hashing to those servers. This kind of link state tracking might improve on that by taking down the links to the servers, too. I didn't test it, though. I think Server 2010 might be smarter so it was either a self shaving Yak, or SEP to fix ;-) regards, - -- Oliver Gorwits, Network and Telecommunications Group, Oxford University Computing Services -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkyjb18ACgkQ2NPq7pwWBt6QmwCeL5eYACPhUa0TGo061OwBwG1z aHYAoMI56i39MN2d27Iqwen5U2u3XSxd =8olD -----END PGP SIGNATURE----- _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/