Routing information configuration and private network label addition method and device based on MPLS (Multiple Protocol Label Switching)

Abstract

The invention discloses routing information configuration and private network label addition method and device based on MPLS (Multiple Protocol Label Switching). The method is applied to the process that a PE (Provider Edge) device configures routing information according to a private network label of a forwarding path issued by a PE at an opposite terminal. The method comprises the steps of: creating a private network label list after receiving the private network label of the forwarding path issued by the PE at the opposite terminal, and adding a list mark of the private network label list into a routing list corresponding to a CE (Customer Edge) device connected with the PE at the opposite terminal; and creating a private network label logic mark sequence list, setting a private network label logic mark corresponding to the forwarding path in the private network label logic mark sequence list to be a mark value for indicating adding a main private network label in a forwarding message or a mark value for indicating adding a spare private network label, and adding the list mark of the private network label logic mark sequence list into the private network label list. The invention can realize the share of the next hop and the addition of the private network labels of a plurality of equivalent routings in the forwarding message.

Description

technical field [0001] The invention relates to the communication field, in particular to an MPLS-based routing information configuration and private network label adding method and device. Background technique [0002] In actual network applications, the networking architecture of dual-homing connections is widely used to improve network reliability. A dual-homing network refers to a network topology in which a network area has two links connected to nodes outside the area, and one of the links backs up the other. [0003] In the network architecture of CE (client equipment) dual-homing PE (operator edge equipment), it is necessary to solve the problem of rapid end-to-end service convergence when the PE equipment node fails. [0004] Taking L3VPN (Layer 3 Virtual Private Network) as an example, the typical networking architecture of CE dual-homing PE can be as follows: figure 1 As shown, wherein, the P node (P-C, P-D in the figure) is the intermediate node of the VPN, and...

AI Technical Summary

Problems solved by technology

[0018] The present invention provides an MPLS-based routing information configuration and private network label adding method and device, which are used to solve the problem that the existing private network label adding technology cannot achieve the balance of sharing next-hop resources and supporting equal-cost routing

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