Hi on 5k mines L2 just do the below and then jump to L3 7K for arp
5KA# sh mac address-table interface Eth108/1/1
Legend:
* - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC
age - seconds since last seen,+ - primary entry using vPC Peer-Link
VLAN MAC Address Type age Secure NTFY Ports/SWID.SSID.LID
---------+-----------------+--------+---------+------+----+------------------
* 72 00a0.983a.edfa dynamic 190 F F Eth108/1/1
5KA#
7KA# sh ip arp | i 00a0.983a.edfa
172.x.x.x 00:10:44 00a0.983a.edfa Vlan72 *
7KA#