Data transmission method and data transmission device for special two-layer virtual network

The technology of a data transmission device and a data transmission method, which is applied in the field of communication, can solve the problems of low BFD fault detection and traffic switching speed, long link service interruption time, etc., and achieve the effect of increasing speed and reducing service interruption time

Active Publication Date: 2014-08-06
HUAWEI TECH CO LTD
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  • Description
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Problems solved by technology

[0004] However, PW redundancy is an end-to-end protection technology. When the network topology is complex, in order to avoid BFD flapping, the BFD detection interval needs to be configured with a large value. As a result, the speed of BFD fault detection and traffic switching is low, and link failures occur. business interruption time

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  • Data transmission method and data transmission device for special two-layer virtual network
  • Data transmission method and data transmission device for special two-layer virtual network
  • Data transmission method and data transmission device for special two-layer virtual network

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] figure 2 It is a flow chart of Embodiment 1 of the data transmission method for a Layer 2 virtual private network of the present invention. In a private network (Layer 2 Virtual Private Network, L2VPN), the main PW passes through an upstream node and a downstream node. Wherein, when the user equipment sends data to the primary virtual li...

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Abstract

Embodiments of the present invention provide a data transmission method and device for a Layer 2 virtual private network. The method is applied to a network including a primary virtual link and a backup virtual link carried by traffic engineering. The primary virtual link passes through An upstream node and a downstream node, the method includes: the upstream node detects the connection status of the communication link to be protected between the upstream node and the downstream node, and determines whether the communication link to be protected fails; if the communication link to be protected fails, Then the upstream node performs traffic engineering fast rerouting switching, and switches the data transmission to the pre-established standby label switching channel for protecting the communication link to be protected; the upstream node triggers virtual link switching. In the embodiment of the present invention, when a link fails, local protection is performed through traffic engineering fast rerouting first, and then the virtual link is smoothly switched, thereby improving the speed of fault detection and traffic switching, and reducing the time when a link fails. business interruption time.

Description

technical field [0001] The embodiments of the present invention relate to communication technologies, and in particular to a data transmission method and device for a Layer 2 virtual private network. Background technique [0002] With the widespread application of Layer 2 Virtual Private Network (Layer 2 Virtual Private Network, hereinafter referred to as: L2VPN), the reliability requirements for L2VPN, especially for L2VPN networks carrying real-time services such as VoIP and IPTV, are getting higher and higher. A virtual link (Pseudo Wire, hereinafter referred to as: PW) redundancy (Redundancy) is one of technologies for improving reliability of an L2VPN network. In the PW redundancy technology, a failure of the L2VPN network may be detected through a bidirectional forwarding detection (Bidirectional Forwarding Detection, hereinafter referred to as: BFD) mechanism, and then a failure notification and fast traffic switching may be performed. [0003] figure 1 It is a sche...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/24H04L12/70H04L69/14
CPCH04L45/28H04L12/4641H04L45/22H04L63/0272
Inventor 陈志华
Owner HUAWEI TECH CO LTD
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