With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
smonPrioStatsGroup
smon Prio Stats Group
1.3.6.1.2.1.16.20.4.3
Defines the switch monitoring specific statistics - per VLAN Id on interface.
Back to SMON-MIB MIB page.
IPHost Network monitor allows you to monitor smonPrioStatsGroup 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.