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Looped network and its protecting method

A ring network, ring network failure technology, applied in the field of network communication

Active Publication Date: 2006-06-21
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] What the present invention aims to solve is the problem that fault notification and refresh forwarding table need to be performed during Ethernet ring network failover in the prior art

Method used

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  • Looped network and its protecting method
  • Looped network and its protecting method
  • Looped network and its protecting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 4

[0133] The ring network in Embodiment 4 is used to forward multicast packets, and the flow of its protection method is as follows figure 2 shown. In step S210, the link layer forwarding of the port on the ring is set on each node in a broadcast manner.

[0134] In step S220, each node on the ring network establishes and maintains a current topology database of the ring network, and retains the information of each connectable node on the current ring network and the adjacent relationship with each other.

[0135] In step S230, the node that needs to carry out three-layer forwarding of the multicast data message of a certain multicast group on the ring network and performs protocol processing on its multicast protocol message is the multicast node of the multicast group, and the multicast The port on the first ring of the node joins the multicast group, and the port on the second ring of the multicast node starts network layer multicast.

[0136] In step S240, the node forwar...

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PUM

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Abstract

The invention discloses a protection method for loop network with at least two nodes. Wherein, every node links on loop by the first and second loop ports; all loop ports interconnect on link layer and connect at least one other port of all nodes on network layer. This method comprises: setting the link layer transmission of loop port as broadcast means; when there is fault on loop network, two normal-working nodes near fault point turn the loop port connected to fault point to another loop port. This invention needs not to update transmission list and fault notice for fault recovery, has no primary and auxiliary nodes and ports as well as clogging port, and realizes the fast recovery and switch less than 50ms.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a method for protecting a link layer ring network, a ring network using the method and network equipment on it. Background technique [0002] With the development of Ethernet technology in the field of metropolitan area network and access network, the Ethernet ring network has been applied more and more. The Ethernet ring network is a link layer network with a redundant structure, which has failover and failover functions. Spanning Tree Protocol (STP, Spanning Tree Protocol) can be used to implement ring network failover and recovery, but STP can only support 7 nodes, and its switching and recovery convergence speed is as long as tens of seconds, which cannot meet the requirements of metropolitan area network. Service providers need to provide users with carrier-class fault tolerance. [0003] In the prior art, EAPS (Ethernet Automatic Protected Switching, Ethernet Automati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/437
Inventor 宁军刘剑锋姚民郑涛
Owner XINHUASAN INFORMATION TECH CO LTD
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