Jestin
Taken from one of out switches. The machine you want to trace is on gi8/9
1) Get mac-address associated with that port.
SZ-JFH-F00-DTE1#show mac-address-table interface gi8/9
Legend: * - primary entry
age - seconds since last seen
n/a - not available
vlan mac address type learn age ports
------+----------------+--------+-----+----------+--------------------------
* 60 0013.216b.5863 dynamic Yes 5 Gi8/9
2) Using the mac-address from the output
SZ-JFH-F00-DTE1#sh arp | include 0013.216b.5863
Internet 10.181.121.7 0 0013.216b.5863 ARPA Vlan60
SZ-JFH-F00-DTE1#
HTH
Jon
