Method for creating label forwarding table, node equipment and system

Abstract

The invention relates to the communication field and discloses a method for creating a label forwarding table, node equipment and a system to reduce the label maintenance workload of a network management system. The method comprises the following steps: a node obtains an entry label of an adjacent downstream node on a label switch path from the network management system and comprises a first label information base for storing an available label of the node; the node distributes the available label in the first label information base; and the node creates the label forwarding table by taking the entry label of the downstream node as own exit label and the available label distributed by self as own entry label, thus reducing the maintenance workload and effectively lowering the network maintenance cost. The embodiment of the invention also discloses the node equipment and the network system correspondingly.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a label forwarding entry establishment method, node equipment and system. Background technique [0002] In a label switching path (Multi-Protocol Label Switch, MPLS) network, by configuring a label forwarding table on a label switching router (Label Switch Router, LSR), the packets with MPLS labels can be forwarded correctly and efficiently. In the prior art, a label sequence of an end-to-end path is generated on a network management system according to a certain algorithm, and then configured on an LSR one by one to complete label deployment. [0003] The central network management centralized control technology uses the central network management to complete the deployment of labels. In this technology, label maintenance and distribution work is completed on the network management. The label forwarding table is configured by the network administrator specifying the ing...

AI Technical Summary

Problems solved by technology

[0004] The inventor of the present invention found in the process of research and practice of the above-mentioned prior art that the label maintenance work of the prior art is completed on the network management, which has high requirements on the network management, and the process of configuring LSP is relatively complicated, requiring network management personnel Plan and record the label information used by each LSP

With the operation of the network, the label usage on each LSR will gradually become messy due to addition and deletion operations, and the workload of label maintenance on the network management will gradually increase, and eventually it will be difficult to maintain

Images