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A method, device and network for stable restart of multi-hop counterfeit wire

A multi-hop pseudowire and restart technology, applied in the field of virtual private network, can solve problems such as data transmission interruption and network traffic loss

Active Publication Date: 2010-09-08
ZTE CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a method and device for a smooth restart of Layer 2 VPN under a multi-hop pseudo-wire, aiming to solve the shortcomings of the existing single-hop pseudo-wire and static multi-hop pseudo-wire smooth restart technology, and to avoid problems caused by PE Interruption of data transmission and loss of network traffic caused by unaware of MS-PW interruption

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  • A method, device and network for stable restart of multi-hop counterfeit wire
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  • A method, device and network for stable restart of multi-hop counterfeit wire

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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] The invention realizes the stable restart under the dynamic multi-hop pseudo-wire, solves the cross-domain problem of the Layer 2 VPN, ensures the uninterrupted forwarding of data during the restart process of the Layer 2 VPN signaling protocol, and improves the stability of the Layer 2 VPN network .

[0042] As shown in FIG. 2 , the multi-hop pseudowire-based Layer 2 VPN network of the present invention mainly includes the following modules: a signaling protocol module 109 , a Layer 2 VPN protocol module 10 and a forwarding information management module 110 .

[0043] Wherein, the signalin...

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Abstract

The present invention discloses a method used for a smooth reboot in the case of multi-hop pseudowires, which includes three steps. In the second-layer VPN data retransmission step, when a signaling session is interrupted between the edge device of an operator and the edge device of a neighboring operator due to the reboot of a second-layer VPN signalling protocol, the edge device of the operatormaintains the second-layer VPN data retransmission; in the reboot node processing step, in order to enter into the reboot node processing, the edge device of the operator is set as a reboot node; in the auxiliary node processing step, in order to enter into the auxiliary node processing, the edge device of the neighboring operator is set as an auxiliary node. The present invention realizes the smooth reboot in the case of dynamic multi-hop pseudowires, realizes non-interrupted retransmission in the course of the reboot of the second-layer VPN signaling protocol and increases the stability of a second-layer VPN network based on multi-hop pseudowires.

Description

technical field [0001] The invention relates to the field of virtual private networks, in particular to a method and device for a stable restart under multi-hop pseudowires in a layer-2 virtual private network. Background technique [0002] Layer 2 virtual private network technology, including virtual private point-to-point service (Virtual Private Wire Service, VPWS) and virtual private LAN service (Virtual Private LAN Service, VPLS), is based on pseudowire (Pseudo Wire, referred to as PW, in packet switching network On the tunnel, a mechanism for simulating point-to-point layer-2 services between two operator edge devices) realizes layer-2 virtual private network (Virtual Private Network, VPN) services. The tunnel (Packet Switch Network Tunnel, PSN Tunnel) provided on the packet-switching network bears pseudowires that simulate various layer-2 services to form a virtual layer-2 link; the virtual layer-2 link connects with the customer edge device (Customer Edge , CE) laye...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L12/56H04L12/24H04L45/28
Inventor 金利忠刘克波胡侃
Owner ZTE CORP