Take a closer look at the actual MAC addresses. Change the order and you'll
see it:
00-c0-4f-a9-05-92
80-c0-4f-a9-05-92
00-c0-4f-62-34-de
80-c0-4f-62-34-de
It appears that the NICs in the PCs are advertising two addresses each, one
starting with 00 and the other starting with 80. I've never seen anything
like this so I have no suggestions. Perhaps two different protocols are
bound to the NICs and they prefer to use separate datalink addresses? I
don't even know if that is possible.
Is it possible to bind two different IP addresses to the same NIC? Not being
much of a PC guy, I can't tell you. I'd love to hear how this one turns
out.
Good luck,
John
> Hi,
>
> Can anyone explain this:
> Little testcase. One port of a Cat.5500(WS-X5224) is connected to a hub.
No
> other ports are in use.
> On this hub are 2 PC's. When I look at the CAM table I see the folowing
> entry's
>
> Switch> (enable) sh cam dyn 5/13
>
> VLAN Dest MAC/Route Des Destination Ports or VCs / [Protocol Type]
> ---- ------------------
-----------------------------------------------
> -----
> 80 00-c0-4f-a9-05-92 5/13 [ALL]
> 80 80-c0-4f-62-34-de 5/13 [ALL]
> 80 00-c0-4f-62-34-de 5/13 [ALL]
> 80 80-c0-4f-a9-05-92 5/13 [ALL]
> Total Matching CAM Entries Displayed = 4
>
> Can anyone explain where the extra entry's starting with 80-xx-xx-xx-xx
are
> coming from?
> I would expect to see only the 2 entry's for the PC's.
>
> Regards Richard
>
>
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