unknown mac-address table

Unanswered Question
Jul 23rd, 2007


Please see the attached mac-address table of one of my gigabit interfaces of a remote site. I feel something peculiar/wrong with the things happening looking at the output? Can anyone explain me the reason. We don't have much devices connected to this interface.

I have this problem too.
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Edison Ortiz Mon, 07/23/2007 - 08:30

This is an indication that this switch is connected to another switch via Gi0/2.

If a packet is destined from this switch to, let's say MAC Address 0000.06c7.3beb, it knows to exit the Gi0/2 interface.

palukuri77 Mon, 07/23/2007 - 09:08


Thanks for your response. But as I said please have a close look at the mac-address table, it seems like someone is sweeping mac-addresses like 0000.0000.0001, 0000.0000.0002 and so on... I've actually truncated the output, the actual mac-address table is too large.



tzainotti Mon, 07/23/2007 - 09:32

Hi. Have you considered the possibility of one of your devices might be infected by a virus, that is sending random MAC Adresses to your switch?

best regards and good luck.


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