Path
A Path is collection of:
• Matrix Connection MC:
− represents the cross-connection inside one NE between sub-units or inside a unit and tier hierarchy.
− named as cross-connections in the FOX51x and FOX61x documentation.
− MCs are not created via the FOXMAN-UN BP cross-connection. The creation and deletion of cross-connections are the implicit results of actions on TEs such as routing or setting a protecting path.
• Link Connection LC:
− specifies the channel used inside a Trail in the Path of TE.
• Subnetwork Connection SNC:
− parts of the network at a single layer (e.g. at P0_nc layer).
• Hole:
− a Hole in the Path means that the routing has not been completed by the user. The FOXMAN-UN NP allows only one hole.
Phase 1: The Hole exists
When a Transport Entity (TE) is created, the route has not been defined thus the Path contains a Hole.
The Path can be a mix of MC, SNC and LC. A hole maybe located anywhere in the Path.
Graphical representation of the Path
GUI: Working Path
If enough capacity is available, provisioning leads to a complete Path.
Phase 2: Closed Hole
A Path can be protected when it has two separate routes, the Working and the Protecting. Both can be routed independently.
Working and Protecting Path
Working and Protecting Path