I have a cisco 2950 switch. I want to find out what is the mac address of the pc that is attached to that particular port. without physically going to the pc and looking it up , how can find it on a cisco switch.
Thanks for all the info.
RTR
Finding mac address of the pc attached on a switchport
May 05, 2006
1 Replies
For example:
switch-1#show mac-address-table interface fastEthernet 0/2 Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- ----- 10 0006.d7fc.41d0 DYNAMIC Fa0/2 Total Mac Addresses for this criterion: 1
Or in reverse if you have the IP but don't have the MAC:
# ping aaa.bbb.ccc.ddd
# show ip arp aaa.bbb.ccc.ddd
Protocol Address Age (min) Hardware Addr Type Interface Internet aaa.bbb.ccc.ddd 132 abcd.1234.5678 ARPA Vlan10
# show mac-address-table dynamic address abcd.1234.5678
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