With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
appnLocalEnTgMltgLinkType
appn Local End Transmission Group Mltg Link Type
1.3.6.1.2.1.34.4.1.3.2.1.17
This object indicates whether the transmission group is a multi-link TG. A TG that has been brought up as a multi-link TG is reported as one, even if it currently has only one link active.
Back to APPN-MIB MIB page.
IPHost Network monitor allows you to monitor appnLocalEnTgMltgLinkType 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.