Rich Adamson wrote:
..
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 ?
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.
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