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 involves the field of communication, especially a MPLS -based routing information configuration and private network label adding method and device. Background technique [0002] In actual network applications, the networking architecture that is widely connected is widely used to improve the reliability of the network.Shuanggui network refers to a network topology structure connected to the outside of the area in a network area, and one of the links will be backup of the other link. [0003] In the network architecture of the CE (client device) dual -return PE (operator boundary device), the problem of rapid convergence of the end -to -end business when the PE device node failure is needed. [0004] Taking the L3VPN (third layer of virtual network) as an example, the networking architecture of the typical CE dual -return PE can be figure 1 Show, in which, P-C, P-D in the Figure is the intermediate node of VPN, responsible for the exterior labe...

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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