DeltaNet has cool WDM products that one of our customer has deployed in a life-cycle project for a large WAN. In collaboration with the DeltaNet engineer, I have implemented a Zenoss ZenPack to monitor the specifics of their Lambdatrail XWDM multiplexers. The ZenPack provide these features:
- devices located under their own device class
 - collect all important inventory data, versions and model information
 - power supply status
 - device ambient temperature
 - port-monitoring with all important properties and thresholds
 - time-based graphs for the important metrics
 
The Zenpack is available on demand.
A few screen-shots:


