With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
llcPortStatsPDUsIn
llc Port Stats PD Us In
1.3.6.1.4.1.9.10.8.1.1.3.1.1
This object reflects the total number of PDUs that have been received on this port. This object is initialized to zero when the port is created.
Back to CISCO-SNA-LLC-MIB MIB page.
IPHost Network monitor allows you to monitor llcPortStatsPDUsIn 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.