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Considered network model Ingress Transit Egress +-----+ link1-2 +-----+ link2-3 +-----+ link3-4 +-----+ |Node1|------------>|Node2|------------>|Node3|------------>|Node4| | |<------------| |<------------| |<------------| | +-----+ link2-1 +-----+ link3-2 +-----+ link4-3 +-----+ To correctly establish a GMPLS LSP from an ingress to an egress, a possible combination of GMPLS attributes is investigated. Simple constraint considerations for creating LSP Switching capabilities (SC) of outgoing links from the ingress and egress nodes must be consistent with each other SC of all transit links should be consistent with the switching type of a LSP to be created. Encoding-types of all transit links should be consistent with the encoding type of a LSP to be created. |