With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cevcEvcIdentifier
Cisco Ethernet Virtual Connection Evc Identifier
1.3.6.1.4.1.9.9.613.1.3.1.1.4
This object specifies a string-value identifying the EVC. This value should be unique across the MEN.
Back to CISCO-EVC-MIB MIB page.
IPHost Network monitor allows you to monitor cevcEvcIdentifier on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.