With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mpcStatRxMpoaResolveReplyUnsupportedMacEncaps
mpc Stat Rx Mpoa Resolve Reply Unsupported Mac Encaps
1.3.6.1.4.1.353.5.8.1.1.2.5.1.7
The number of MPOA Resolution Replies received with an MPOA CIE Code of 0x85, `Unsupported MAC layer encapsulation'. Discontinuities in the value of this counter can occur at re-initialization of the management system, and/or re-initialization of the MPC, and at other times, as indicated by the value of mpcDiscontinuityTime.
Back to MPOA-MIB MIB page.
IPHost Network monitor allows you to monitor mpcStatRxMpoaResolveReplyUnsupportedMacEncaps 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.