aal1 Ces L Co Reason For No Route

This attribute is the route selection's reasonForNoRoute and provides a brief reason for which a route was not selected. The reasons are essentially self-explanatory. Perhaps two reasons for no route require some explanation. The reason unknownRemoteNodeName is issued when the remote node name is not in the topological database. The reason plcAttributesNotMet is issued when there is no network connectivity at a level specified by the PLC attributes. This reason is also issued when there is no physical connectivity between two end nodes.