> > A fairly common assumption is the failover happens in xxx milliseconds, but > > due to nic card design (etc) a different MAC address is used in the failover > > condition. That confuses the hell out of the layer-3 boxes and negates the > > value of the failover. (All documentation, etc, is correct but actual > > implementation in this example is limited by the nic card's inability > > to use a different MAC address from what's programmed into it. There are > > a large number of current nic cards like that.) > > > > I can see this being a problem (not only with layer 3 boxes, but even > with other IP endpoints in the same segment, after all, their ARP > binding will become useless in this case.. > But would you have any example of this ?
I've never tried to keep a list of nic cards (and/or drivers) that do/don't support it. I know some of the Intel cards don't. > Most of the time, should be a no-brainer to have the NIC use a > "non-burned-in-address", in fact, I wonder if is not required by the > 802.3 specs (LAA), since protocols like DecNET, SNA and etc tend to > require this. Don't know about the spec requirement; could be now. Is Decnet and sna still around? ;) Sort of like token ring... I still have to keep an old laptop around that actually has support for a token ring pcmcia card just in case we run into a client that still uses it. Haven't had to use it for a long time though. :) _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
