Is this Token Ring? The first bit of the source address is set to one when
source-routing is used. So 00 becomes 80.
Priscilla
At 06:59 AM 1/5/01, John Neiberger wrote:
>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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