With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
coIfDwdmFrequency
co If Dwdm Frequency
1.3.6.1.4.1.9.10.66.1.2.1.1.1
The nominal central frequency associated with this interface, in GHz. This object is instantiated for interfaces with coIfTypeExtn value of 'wdmChannel' and 'wavelengthTransport'. This object may also be instantiated for optoelectronic interfaces that originate or terminate DWDM wavelengths, including some of the interfaces with coIfTypeExtn value of 'opticalTransponder'.
Back to CISCO-OPTICAL-IF-EXTN-MIB MIB page.
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