With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
lesInErrors
les In Errors
1.3.6.1.4.1.9.9.39.1.1.2.1.1
The number of frames received by the LES which were either malformed or did not follow standard protocol (i.e. receiving a LE-ARP request for a multicast address).
Back to CISCO-LES-MIB MIB page.
IPHost Network monitor allows you to monitor lesInErrors on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.