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Method for realizing regional-field network WAN port TRUNK protection

A technology of metropolitan area network and port, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve service interruption, failure link protection mechanism cannot be realized in the link layer of the metropolitan area network WAN port, and TRUNK group failure issues of protection

Active Publication Date: 2007-06-13
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the TRUNK technology can effectively increase the bandwidth of the EPL service link layer, since the TRUNK technology is a technology specifically for the Ethernet MAC link layer, its failure link protection mechanism is on the link layer of the WAN port of the metropolitan area network. It cannot be realized; if the WAN port link corresponding to the TRUNK link in the TRUNK group fails (for example, an alarm occurs on the SDH time slot corresponding to the WAN port), the service carried by the entire TRUNK group will be interrupted
How to realize the failure protection of the TRUNK group in the metropolitan area network, the existing technology has not yet proposed a feasible solution

Method used

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  • Method for realizing regional-field network WAN port TRUNK protection
  • Method for realizing regional-field network WAN port TRUNK protection

Examples

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Embodiment Construction

[0023] The typical configuration of the trunk group for the EPL service of the metropolitan area network is shown in Figure 1: two 100Mb links are configured for the Ethernet service of customer 1 and customer 2 to the trunk group of sites A and B, and sites A and B are connected through WAN ports 1, 2, 3, 4 are connected. Ethernet services are balanced to two 100Mbs links to site A after passing through the Ethernet trunk, and site A is transparently transmitted from WAN port 1 and port 2 to site B after GFP encapsulation; WAN port 3 and port 4 of site B decompose GFP After encapsulation, the business is downlinked to two 100Mbs links. In this way, the bandwidth seen from the user's point of view is actually 200Mbs.

[0024] The present invention will be further described in detail in conjunction with the above typical configurations.

[0025] 1. Configure the WAN port in the TRUNK group to detect near-end failure events

[0026] The WAN port configured to the TRUNK group ...

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Abstract

The method includes steps: (1) detecting WAN ports of metropolitan area network (MAN) configured on TRUNK group to find out near end failure event on transmission link of MAN; (2) after detected near end failure event by the port, sending notice back to far end WAN port; (3) the port detects protection condition, if condition is satisfied, the method implements TRUNK fail safe action for WAN port of MAN; (4) the port detects recovery condition, if condition is satisfied, the method implements TRUNK protective recovery action for WAN of metropolitan area network. Comparing with prior art, the invention configures LAN and WAN ports to TRUNK group so that if any link occurs failure, the disclosed method can implement protection in order to continue service.

Description

technical field [0001] The invention relates to a method for realizing the TRUNK protection of a WAN port of a metropolitan area network for SDH (Synchronous Digital Hierarchy) optical transmission equipment. Background technique [0002] As an IEEE802.3ad standard, the Ethernet trunk technology is widely used to increase link layer bandwidth and improve availability. The main features of the Ethernet trunk technology are: 1. The link bandwidth of the trunk group increases linearly with the number of available trunk links; 2. If any link in the trunk group fails, the business can continue on the remaining available trunk links Transmission, isolate the failed link, and realize the trunk protection of the failed link. [0003] With the wide application of SDH-based multi-service transport platform MSTP (Multi-Service Transport Platform) technology in the metropolitan area network, Ethernet trunk technology is also increasingly used in the metropolitan area network EPL (Ethem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/28H04L29/06
Inventor 刘爱华徐令博
Owner ZTE CORP
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