With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cvVrfInterfaceTable
Cisco Voice Vrf Interface Table
1.3.6.1.4.1.9.9.711.1.2.1
This table contains the entries representing the interfaces associated with a VRF instance.
Back to CISCO-VRF-MIB MIB page.
IPHost Network monitor allows you to monitor cvVrfInterfaceTable 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.