METHOD FOR SUPPORTING COMMUNICATION BETWEEN NETWORK NODES

摘要

PROBLEM TO BE SOLVED: To increase user data communication speed and to reduce necessary calculation capability by extending shortcuts from the network nodes which can use an LDP to the network nodes which cannot use an LDP that does not exchange the information on the label resources with the network nodes. SOLUTION: A switch controller SC1 can be used for connection between a network node ISR1 and the network nodes AH1-AH3 and manages the label resources which previously consists of the nodes AH1-AH3 to every common connection secured to the node ISR1 respectively. The controller SC1 also has a function to decide the shortcuts which can be extended to the nodes AH1-AH3 through the ISR1. Then the SC1 allocates a label consisting previously of the nodes AH1-AH3 to the connection secured to the these nodes respectively to the said shortcuts and then extends these shortcuts to the nodes AH1-AH3 respectively through the ISR1.