With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpwVcRemoteControlWord
Cisco Pseudo Wire Vc Remote Control Word
1.3.6.1.4.1.9.10.106.1.2.1.16
If maintenance protocol is used for VC establishment, this parameter indicates the received status of the control word usage, i.e. if packets will be received with control word or not. The value of 'notYetKnown' is used while the maintenance protocol has not yet received the indication from the remote node. In manual configuration of the VC this parameters indicate to the local node what is the expected encapsulation for the received packets. REFERENCE Martini, et al, and So, et al, .
Back to CISCO-IETF-PW-MIB MIB page.
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