METHOD FOR LABEL MANAGEMENT OF DISTRIBUTED MUTI PROTOCOL LABEL SWITCHING ROUTER AND THE ROUTER THEREOF

A distributed multi-protocol label switching router determines whether at least one extra label exists in a local label pool having information on allocated labels stored therein and requests allocation of the labels in preset units in a switching control card in response to a determination that no extra labels exists in response to a label allocation request to establish at least one label switched path in a subscriber line card. The labels are allocated at a label pool have information on all labels capable of being allocated in a distributed multi-protocol label switching router stored in preset units therein in response to the label allocation request of the subscriber line card in the switching control card, and the information of the allocated labels is transmitted to the subscriber line card. A label pool in the subscriber line card is updated according to information of the allocated labels transmitted from the switching control card, and the labels are allocated in the updated label pool in response to the label allocation request in the subscriber line card.