Conley Rose, P.C.
Establishing and protecting label switched paths across topology-transparent zones
A label switched path (LSP) establishing method that includes receiving a first path message from a network node outside of a topology-transparent zone (TTZ) along a path for the LSP, computing a TTZ path through the TTZ from the network component to an egress TTZ edge node along the LSP, sending a second path message to a TTZ internal node along the TTZ path, receiving a first reservation (RESV) message from the TTZ internal node that includes a label allocated for the egress TTZ edge node, and sending a second RESV message that includes a label allocated for the network component and the label allocated for the egress TTZ edge node to the network node.
Futurewei Technologies, Inc.
H H H H H H
H04L H04L H04L H04L H04L H04L
inventional inventional additional inventional inventional inventional
Huaimo Renwei
Chen Li