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Posted by Rick Jones on June 7, 2007, 3:20 pm
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> anoop wrote:
> > The situation you describe about is akin to having the same subnet
> > configured on multiple ports in a NIC. I don't think they exist
> > (but I could be wrong).
It is possible on many platforms to configure different NICs (or
> > different ports of a multi-port NIC) with IP addresses in the same
> > IP subnet. The specifics of the resulting behaviour varies by
> > platform (OS/stack).
> I have had multiple NIC on the same machine as different subnets on
> the same physical net.
> Do multiport NICs have a different MAC address for each port?
Yes. At least for all the multiport NIC's I've ever seen, each port
has its own MAC address. Typically, consecutive MAC addresses. To the
rest of the system, each port looks like its own NIC. (A little
handwaving there, but not much).
> Note that it is consistent with 802.3 for all ports (different NIC)
> on a machine to have the same MAC address, as is commonly done by
> Sun but not by most others.
_Is_ Sun still doing that? I thought they finally stopped doing
that. (Thankfully, IMO).
rick jones
--
firebug n, the idiot who tosses a lit cigarette out his car window
these opinions are mine, all mine; HP might not want them anyway... :)
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...
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