On Tue, Jan 12, 2010 at 11:30:52AM +1100, Dale Shaw wrote: > Hi all, > > I'm operating in a bit of an information vacuum here, but I'm trying > to help out some colleagues with a server NIC teaming / EX switch > problem.
Looks like you're hitting following bug: PR/492704 EX switch should forward certain unregistered L2 multicast packets used by HP NIC teaming Fixed in 9.3S7.2 for ex-series. > > The problem as described to me is that some HP servers with teamed > NICs are having connectivity problems when migrating from Cisco to > Juniper LAN switches. The teaming mode on the server side is "Network > Fault Tolerance (NFT)". Theoretically this means only one adapter in > the team is active at any one time, however there is a heartbeat > protocol used to detect faults in the switching fabric. The heartbeat > protocol is based on a Layer 2 multicast -- it is not IP. The source > MAC is the 'real' adapter's hardware address, and the destination MAC > is 03-00-C7-00-00-EE. > > The server appears to flip flop between interfaces in the team, which > indicates to me that something is going wrong with the heartbeat. > We're about to do some lab work to see what's happening on the wire > but in the meantime I thought I'd shoot out this e-mail. > > My colleagues connected the server to a Cisco switch which had been > "write erase, reload"'d, and it just worked. > > Is there anything "special" about the way a Juniper EX switch handles > non-IP, multicast frames? The EX switch config is really, really > simple. They've tried turning just about everything off (including > STP) to no avail. > > Any clues? Did some Googling but came up empty. > > cheers, > Dale > BTW: Having said all that about heartbeats, I could be headed down a > rabbit warren -- if the high level problem description reminds any of > you of another problem, please set me straight :-) > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp