On Thu, Jul 13, 2006 at 12:55:57PM -0700, kelsey hudson wrote:
> John Oliver wrote:
> >Any ideas on how to track this down? Maybe a way to figure out which
> >physical port on the switch (Cisco 2970) is responsible?
>
> You could always do a 'sh arp' from an enable prompt. That'll at least
> give you the dot1q interface (VlanN) which has that MAC local in its table.
>
> Also, 'sh mac-address-table' from an enable prompt will narrow it down
> to a particular port -- on an active switch this may be very long
> output. 'sh mac-address-table vlan 10' for instance, only shows MACs
> associated with that vlan. It'd be good to narrow it down with what you
> discovered from the 'sh arp' command ;)
After I found out about sh mac-address-table from Mike M (Thanks Mike!)
I narrowed it down to a Netgear POS switch. I swapped that for another
2970 so I could find the source. But noooo...
2970_1#sh mac-address-table address 000c.764e.04c8
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
3 000c.764e.04c8 DYNAMIC Gi0/4
Total Mac Addresses for this criterion: 1
2970_1#sh mac-address-table address 000c.764e.04c8
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
3 000c.764e.04c8 DYNAMIC Gi0/24
Total Mac Addresses for this criterion: 1
2970_1#sh mac-address-table address 000c.764e.04c8
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
3 000c.764e.04c8 DYNAMIC Gi0/4
Total Mac Addresses for this criterion: 1
2970_1#sh mac-address-table address 000c.764e.04c8
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
3 000c.764e.04c8 DYNAMIC Gi0/4
Total Mac Addresses for this criterion: 1
2970_1#sh mac-address-table address 000c.764e.04c8
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
3 000c.764e.04c8 DYNAMIC Gi0/24
Total Mac Addresses for this criterion: 1
It's moving around my network! Gi0/24 is a trunk to 2970_2 and Gi0/4 is
a trunk to 2970_3
Computers... gotta love 'em, because it gets pretty expensive to take
'em out and shoot 'em.
--
***********************************************************************
* John Oliver http://www.john-oliver.net/ *
* *
***********************************************************************
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