With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
smonVlanIdStatsTotalOverflowOctets
smon Vlan Id Stats Total Overflow Octets
1.3.6.1.2.1.16.22.1.2.2.1.6
The number of times the associated smonVlanIdStatsTotalOctets counter has overflowed.
Back to SMON-MIB MIB page.
IPHost Network monitor allows you to monitor smonVlanIdStatsTotalOverflowOctets on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.