With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cwspConnTraceEgressVpi
cwsp Conn Trace Egress Vpi
1.3.6.1.4.1.351.140.1.2.14.4.1.4
This object shows the Egress port's VPI value for the traced connection.
Back to CISCO-WAN-SVC-MIB MIB page.
IPHost Network monitor allows you to monitor cwspConnTraceEgressVpi on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.
