With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
clcMacAddressLimitGroup
Cisco L2 Control Mac Address Limit Group
1.3.6.1.4.1.9.9.313.2.2.1
This is the group to control MAC address limit function.
Back to CISCO-L2-CONTROL-MIB MIB page.
IPHost Network monitor allows you to monitor clcMacAddressLimitGroup on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.