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Discovery method and system of loop network protection information

A technology for protecting information and discovering methods, applied in the network field, can solve the problems of ring network topology not equal to ring network protection, high network resource consumption, slow topology discovery speed, etc. less effect

Inactive Publication Date: 2011-05-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent application number 200710175790.7 "A Ring Network, Ring Network Topology Discovery Method, and a Node" discloses a solution in the T-MPLS field. However, the ring network topology is not equal to the ring network protection, and the topology forms a ring It is not necessarily ring network protection, so ring network and ring network topology discovery are not necessarily ring network protection discovery
This patent application adopts the method of exchanging the saved topology table with the adjacent nodes to realize the topology discovery of the ring network. Since the topology table contains the information of the entire network, the method of this patent application consumes a lot of network resources, and this consumption will increase with the The increase in the number of nodes multiplies; this patent application uses adjacent nodes to exchange and save the topology table, and the speed of topology discovery is slow and inefficient; this patent application cannot realize multi-ring and multi-domain ring topology discovery, and does not provide multi-ring It does not provide the method of distinguishing the multi-ring topology, and does not provide the management method for the discovery information of the multi-ring topology, so it cannot meet the management requirements of the ASON network

Method used

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  • Discovery method and system of loop network protection information
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  • Discovery method and system of loop network protection information

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 As shown, the discovery method of the ring network protection information of an embodiment of the present invention comprises the following steps:

[0040] Step 101, configuring node ring network protection information on each node of the protection ring;

[0041] Node ring network protection information refers to the ring network protection information related to a node, which includes: protection ring identification, ring node identification, message type, node eastbound and westbound node identification, protection type of protection ring, protection status, working Protection pair configuration, protection parameters, etc.

[0042] Among them, the protection ring identifier is used to identify different protection rings, and the absence of the protection ring identifier indicates that the protection ring does not exist in the existing protection ring network; the ring node identifier is used to distinguish different nodes on the protection ring; th...

Embodiment 2

[0063] Such as figure 2 As shown, in a protection ring network composed of two protection rings, ring 1 and ring 2, when the node ring network protection information of node NE1 changes, the method for discovering the ring network protection information includes the following steps:

[0064] Step 201, when the protection state on the node NE1 changes, send the node ring network protection information of NE1 to other nodes. The specific format of the node ring network protection information is determined according to the bearer protocol. In this embodiment, it is represented by Table 1.

[0065] Table 1:

[0066]

[0067]

[0068] The protection parameters in Table 1 include waiting for reply time WTR, delay time HoldOffTime, in the case of Ethernet ring network protection, it also includes blocking ports, etc., and other parameters can also be included. Users can define other parameters by themselves to meet different needs of users. .

[0069] Step 202, the node NE2 ...

Embodiment 3

[0076] Such as image 3 As shown, in a protection ring network composed of ring 1 and ring 2, the node NE8 on ring 2 is deleted, and the method for discovering the protection information of the ring network includes the following steps:

[0077] Step 301, delete the node NE8, and the node NE8 sends the ring network protection information of the node whose message type is deleted to other nodes;

[0078] Step 302, node NE2 receives the node ring network protection information sent by node NE8, judges that the message type is delete, and the ring ID is ring 2, that is, if a node NE8 is deleted in the existing ring 2, then the entire network or In the intra-domain ring network protection information, delete the node ring network protection information corresponding to node NE8, that is, delete the row of node NE8 in ring 2 in Table 2, and update the east-west connection relationship between node NE5 and node NE7.

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PUM

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Abstract

The invention discloses a discovery method and system of loop network protection information. The discovery method comprises the following steps: a current node sends node loop network protection information of the current node to other nodes; and the current node receives node loop network protection information send from other nodes, updates or maintains total network or domain loop network protection information saved by the current node. The discovery system comprises a protection information sending module, a protection information receiving module and a protection information processing module, wherein the protection information sending module is used for sending node loop network protection information, the protection information receiving module is used for receiving the node loop network protection information, and the protection information processing module is used for updating or maintaining total network or domain loop network protection information saved by the current node. The discovery method and the system can reduce system consumption, improve the discovery efficiency of loop network protection information.

Description

technical field [0001] The present invention relates to network technology, in particular to the field of network management therein. Background technique [0002] Ring network protection has many advantages such as simple topology, high bandwidth utilization, good survivability, and short network recovery time. It is the most commonly used protection form in the field of communication networks. [0003] The purpose of ring network protection information discovery is to enable nodes to understand ring network protection information, so that the network management system can collect all ring network protection information as long as it is connected to any node. The discovery of ring network protection information can be completed on the management plane or the control plane. [0004] The discovery of ring network protection information is particularly important for Automatic Optically Switched Networks (ASON). Timely and accurate discovery of ring network protection informa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/437H04J3/08H04L45/02H04L45/28
CPCH04L45/02H04L45/28
Inventor 年庆飞
Owner ZTE CORP