With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cseL2StatsEntry
CISCO SWITCH ENGINE L2 Stats Entry
1.3.6.1.4.1.9.9.97.1.1.1.1
A conceptual row containing L2 statistics maintained by a switching engine (identified by entPhysicalIndex). Each switching engine managed by this MIB module has an entry in this table.
Back to CISCO-SWITCH-ENGINE-MIB MIB page.
IPHost Network monitor allows you to monitor cseL2StatsEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.