A pw+l3vpn protection method and system

A protection system and gateway node technology, applied in the transmission system, digital transmission system, data exchange through path configuration, etc., can solve the problems of dual active use, downlink traffic failure, long protection switching time, etc., to achieve fast switching speed, Improve robustness and facilitate live network deployment

Inactive Publication Date: 2018-03-16
ZTE CORP
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Problems solved by technology

[0018] In view of this, the main purpose of the present invention is to provide a PW+L3VPN protection method and system to solve the problems of the existing PW+L3VPN protection schemes, such as the long protection switching time and the double faults when the links between gateway nodes fail. The problem that the downlink traffic is blocked due to the main use

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  • A pw+l3vpn protection method and system
  • A pw+l3vpn protection method and system
  • A pw+l3vpn protection method and system

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[0051] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0052] A PW+L3VPN protection method provided by the embodiment of the present invention is applied to the live network service bearer of PW+L3VPN, such as Figure 4 As shown, the method mainly includes the following processes:

[0053] Step 401 , configuring a master PW and a backup PW with the attribute of single transmission and double reception on the access node, and the master PW and the backup PW are terminated to two layer-3 gateway nodes.

[0054] The so-called single-send and double-receive attribute refers to sending in one direction and receiving in both directions, that is, only the currently used PW can send traffic, but both the active and standby PWs can receive traffic.

[0055] On the two layer-3 gateway nodes, configure the same IP address and media access control (MAC) address for the two layer-3 ...

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Abstract

The invention discloses a PW+L3VPN protection method and system. The method includes: configuring a primary and a standby pseudowire (PW) with a single-transmit and double-receive attribute on an access node, and the primary and standby PWs are terminated to two layer-3 gateways Node; the access node sends Address Resolution Protocol (ARP) information and routing information to two layer-3 gateway nodes through the active and standby PWs, and the ARP information and routing information are transmitted in the layer-3 virtual private network (L3VPN) via the layer-3 gateway node Intra-domain notification; each node configures its own forwarding state according to ARP information and routing information, and forwards uplink and downlink traffic respectively according to the forwarding state; when the network fails, the forwarding state of the node affected by the failure changes, and The subsequent forwarding state forwards the upstream and downstream traffic respectively. Through the present invention, the switching speed is fast, which is conducive to improving the robustness of the network and reducing the complexity of operation and maintenance; it is not necessary to configure VRRP on the three-layer gateway node, and the problem of VRRP dual masters will not occur.

Description

technical field [0001] The present invention relates to the technical field of live network service bearer, in particular to a PW+L3VPN protection method and system. Background technique [0002] At present, the bearer scheme of live network services mainly includes two mainstream schemes, which are Pseudowire (PW, PseudoWire) + Layer 3 (L3) virtual private network (VPN, Virtual Private Network) bearer scheme and user edge equipment (CE, Customer Edge)+L3VPN bearer solution. The so-called existing network service refers to the service of the current network. [0003] Among them, the PW+L3VPN bearer solution is as follows: figure 1 shown in figure 1 In the network shown, the access ring composed of A node (access node) is mounted on two B nodes, and the nodes above the B node and below the base station controller (BSC, Base Station Controller) / access gateway (aGW) These devices together form a core aggregation ring. When deploying the PW+L3VPN bearer solution, the PW ser...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L12/24H04L29/12H04L12/801
Inventor 曲延锋杨慧
Owner ZTE CORP
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