Mac Addresses and Interfaces

[dangerousdom]

Is it possible to see which MAC addresses are contected to which Interfaces on the Switch??

Thanks a lot

 

[burtsbees]

sh mac-address-table

This will tell you what MACs are on the other end of the switch interface...

sh int

This will tell you the physical MAC of each physical switchport interface.

Burt

 

[zhenning]

If you know a MAC address and want to know which interface it is connected to, you can use:

sh mac-address-table | in xxxx.xxxx.xxxx

 

[jdeisenm]

If you are lazy you can type "sh mac- | inc zzzz"
where the mac address is xxxx.yyyy.zzzz.

If you know the interface on which the mac address appears (or this example it will be g0/2, you can type "sh mac- | inc 0/2".

Also if you want to see all the mac addresses directly connected to a specific switch, use the exclude command on the uplink port g0/1...."sh mac- | exc 0/1".

 

[CPaul123]

one other trick is if you know the ip address...ping the ip address and then do a show arp...this displays the mac address..then you can do what jdeisenm says to do...