With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
co If Dwdm Channel Group Entry
An entry contains information about one interface that represents a group of DWDM channels. The group can be described as a specified set of DWDM frequencies, or as the group of all DWDM frequencies except for those in a specified set. If a frequency is included in a DWDM channel group, this does not necessarily indicate that there is a signal present at that frequency. It indicates that if a signal is present at that frequency, then that signal is included in this DWDM channel group.
Back to CISCO-OPTICAL-IF-EXTN-MIB MIB page.
IPHost Network monitor allows you to monitor coIfDwdmChannelGroupEntry on Cisco device via the SNMP protocol.
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Easy monitoring of coIfDwdmChannelGroupEntry with IPHost tools