With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
tokenRingDripLocalVlanStatusEntry
token Ring Drip Local Vlan Status Entry
1.3.6.1.4.1.9.5.1.11.12.1
a particular TR-CRF VLAN.
Back to CISCO-STACK-MIB MIB page.
IPHost Network monitor allows you to monitor tokenRingDripLocalVlanStatusEntry 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.