With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoAtmSwAddrIndex
cisco Atm Switch Address Index
1.3.6.1.4.1.9.9.51.1.1.1.1
A sequence number when address gets created. 1 is the primary address. This is dense table and this index will be re-sequenced when a entry get deleted and it can only create new entry when append in the end of table.
Back to CISCO-ATM-SWITCH-ADDR-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoAtmSwAddrIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.