Data forwarding method, device and system

A forwarding method and data technology, which is applied in the field of communication, can solve problems such as packet loss, link delay, and inability to guarantee the continuity of data forwarding, and achieve the effects of reducing link delay, ensuring normal forwarding, and reducing packet loss

Inactive Publication Date: 2011-08-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that although the existing technology can switch to the backup link when the current link fails, because the switching process takes a certain amount of time, the continuity of data forwarding cannot be guaranteed, resulting in link delay or even loss. packet phenomenon

Method used

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  • Data forwarding method, device and system
  • Data forwarding method, device and system
  • Data forwarding method, device and system

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0040] For ease of understanding, some concepts involved in the embodiments of the present invention are firstly introduced.

[0041] PE refers to the edge router on the backbone network, which is connected to CE. It is mainly responsible for the access of VPN services, and completes the mapping and forwarding of packets from the private network to the public network tunnel, and from the public network tunnel to the private network.

[0042] CE is the user equipment that is directly connected...

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Abstract

The invention discloses a data forwarding method, device and system which are used in a two-layer virtual private network system. The two-layer virtual private network system comprises provider edges (PEs) and a customer edge (CE), wherein the main PE and the backup PE form a cross-node redundancy group (RG). The method comprises the following steps: automatically establishing a data channel for link protection with the backup PE; monitoring a current data transmission link; and when the current data transmission link fails, performing data forwarding through the backup PE and the data channel for link protection. According to the invention, the link delay as well as the packet loss can be reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a data forwarding method, device and system. Background technique [0002] In the VPLS (Virtual Private Lan Service, Virtual Private LAN Service) of the L2VPN (Layer 2 Virtual Private Network) service, the system consists of PE (provider edge, service provider edge equipment) and CE (customer edge, user edge equipment). [0003] In order to ensure the normal forwarding of data between PE and CE when a fault occurs, the ICCP protocol (Inter-Chassis Communication Protocol, frame communication protocol) is used in the prior art. In this protocol, two or more devices can become inter-chassis A node redundancy protection group (Redundancy Group, RG) can synchronize the data of two or more devices in the RG through the ICCP protocol to form a dual-homing network. In this dual-homing network, the links formed by one device and the other two devices serve as mutual backups...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/22H04L12/26H04L12/56H04L45/24
CPCH04L45/22H04L45/66H04L45/247
Inventor 何路友石悌君赵凤华张锦辉
Owner HUAWEI TECH CO LTD
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