The following classes are used to model connections in the Optical Transport Manager for WDM:

  • FiberLink---Unidirectional physical link

  • OchLink---Unidirectional link at the OCH layer

  • OcnLink---Unidirectional link at the OCN layer

  • TopologicalLink---Bidirectional link that is carrying a client service across the WDM network

  • ClientCircuit ---Unidirectional link traversing the WDM domain

  • ClientTrail---Unidirectional link carrying a segment of the ClientCircuits

    Special treatment is given to band-multiplexers, which are passive devices with no alarms associated with them. This is described in “FiberLink used in modeling band-multiplexer” on page 59.

    The connection classes are described in the following sections.