A load balancing method and device applied to mpls TP

A load balancing and balancing group technology, applied in the field of communication, can solve the problem that the active and standby tunnels cannot achieve load sharing, etc.

Active Publication Date: 2011-11-30
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0012] The existing MPLS TP tunnel protection strategy directly follows the common active/stand...

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  • A load balancing method and device applied to mpls TP
  • A load balancing method and device applied to mpls TP
  • A load balancing method and device applied to mpls TP

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Embodiment Construction

[0031] When implementing the tunnel protection technology in the MPLS TP network, multiple tunnels can be configured to protect each other. The number of active tunnels is 1 and the number of protection tunnels is N. Even if N backup tunnels are used to protect an active tunnel, only one of the backup tunnels can be selected as the active tunnel according to the optimal policy when the active / standby switchover occurs. For ease of use, only one backup tunnel can be used, and the common ones are 1:1 tunnel protection and 1+1 tunnel protection.

[0032] In the 1:1 tunnel protection mode, the data traffic in the MPLS TP network is normally transmitted through the active tunnel. When the active tunnel fails, the PE device switches the user traffic After the active tunnel is restored, the traffic on the standby tunnel is switched back to the active tunnel. That is, under normal circumstances, the backup tunnel does not participate in traffic forwarding. In fact, the backup tunnel...

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Abstract

A method of and a device for enabling load balancing for Multiprotocol Label Switching Transport Profile (MPLS-TP) are provided. The method is applied to a process of transmitting data between two Provider Edge (PE) devices that adopt a protection mechanism of primary and backup tunnels. The method comprises allocating, by a source PE device located at a head node of a tunnel, traffic to each of the primary and backup tunnels in a current transmission period based on transmission performance information about each of the primary and backup tunnels in a previous transmission period fed back by a destination PE device located at a tail node of the tunnel, when a set transmission period comes; and obtaining, by said source PE device, the traffic allocated to each of the tunnels and transmitting data to the destination PE device via the corresponding tunnels.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for implementing load balancing applied to MPLS TP. Background technique [0002] ITU-T (International Telecommunication Union) and IETF (Internet Engineering Task Force) have formulated ITU-T transmission requirements to implement scalable IETF MPLS architecture. These extensions are called Transport Profile for MPLS (MPLS-TP, where MPLS is Multiprotocol The English abbreviation of Label Switching, the Chinese expression is multi-protocol label switching). MPLS-TP is a connection-oriented packet switching network technology, which includes the following features: [0003] (1) Using the MPLS label switching path, eliminating the complex functions of MPLS signaling and IP; [0004] (2) Support multi-service bearer, independent of client layer and control plane, and can run on various physical layer technologies; [0005] (3) It has strong transmission...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/24H04L45/50
CPCH04L41/0663H04L45/50
Inventor 宋小恒
Owner NEW H3C TECH CO LTD
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