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Method and apparatus for preventing loop when RRPP and partial STP network damage recovery

A fault recovery and fault technology, applied in the field of network management, can solve problems such as network paralysis and broadcast storms

Inactive Publication Date: 2009-01-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The right port of device 1 and the left port of device 2 will be released automatically after three times the interval of sending the HELLO message, and the left port of device 3 will receive the STP configuration message sent by itself. For a period of time, since the ports forming the loop are all released, the loop occurs, and in severe cases, it will also cause a broadcast storm, which even paralyzes the network.
[0011] For the problem of the loop occurring when the above-mentioned network failure link is restored, there is no effective solution in the prior art

Method used

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  • Method and apparatus for preventing loop when RRPP and partial STP network damage recovery
  • Method and apparatus for preventing loop when RRPP and partial STP network damage recovery
  • Method and apparatus for preventing loop when RRPP and partial STP network damage recovery

Examples

Experimental program
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Effect test

Embodiment 1

[0039] see image 3 and Figure 6 , when the faulty link between device 4 and device 5 is restored and the faulty link between device 1 and device 2 is not restored, the method for preventing loops from occurring includes the following steps:

[0040] Step 101: faulty node device 5 and device 4 send a LINK-UP notification message to device 6, and temporarily block its left port and upper port at the same time;

[0041] Step 102: In order to prevent the left port of device 5 and the upper port of device 4 from forming a loop during the period from the timeout release until the left port of device 3 receives the STP configuration message sent by itself, set the left port of device 5 to The temporary blocking time of the side port and the upper port of the device 4 should be greater than Y, specifically (2-3)Y;

[0042] Step 103: In order to make the STP configuration message temporarily blocked when the left port of device 5 and the upper port of device 4 are temporarily block...

Embodiment 2

[0048] see Figure 4 and Figure 7 , when the faulty link between device 1 and device 2 is restored and the faulty link between device 4 and device 5 is not restored, the method for preventing loops from occurring includes the following steps:

[0049] Step 201: the faulty node device 1 and device 2 send a LINK-UP notification message to device 6, and temporarily block its right port and left port at the same time;

[0050] Step 202: In order to prevent the left port of device 2 and the right port of device 1 from forming a loop during the period from the timeout release until the left port of device 3 receives the STP configuration message sent by itself, set the The temporary blocking time of the left port and the right port of device 1 should be greater than Y, specifically (2-3)Y;

[0051] Step 203: In order to detect the link when the STP configuration message is temporarily blocked on the left port of device 2 and the right port of device 1, enable the left port of dev...

Embodiment 3

[0059] see Figure 5 and Figure 8 , when only one link fails, for example, the link between device 4 and device 5 fails, and when the faulty link between device 4 and device 5 recovers, the method for preventing loops from occurring includes the following steps:

[0060] Step 301: the faulty node device 5 and device 4 send a LINK-UP notification message to device 6, and temporarily block its left port and upper port at the same time;

[0061] Step 302: In order to prevent the left port of device 5 and the upper port of device 4 from forming a loop during the period from the timeout release until the secondary port of device 6 receives the HELLO message sent by itself, set the left port of device 5 The temporary blocking time of the upper port of device 4 should be greater than X, specifically 3X;

[0062] Step 303: enable the configuration message function of not blocking STP when the left port of device 5 and the upper port of device 4 are temporarily blocked;

[0063] St...

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PUM

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Abstract

The invention discloses a method and device for preventing ring occurrence when networking failure of RRPP and local STP is removed, belonging to network management field. And it advances a method which sets temporary blocking time of failure port of transmission node on a failure link to be longer than transmitting time of configuration message and HELLO message of STP and sets the failure port not to block configuration message of STP in the temporary blocking state, thus assuring local STP has detected link recovery by sending configuration message at regular time before the RRPP failure port is released. And it also provides a corresponding device, which can solve the problem of ring occurrence, too.

Description

technical field [0001] The invention relates to the field of network management, in particular to a method and device for preventing loops when RRPP and local STP networking fails to recover. Background technique [0002] RRPP (Rapid Ring Protection Protocol) is a link layer protocol specially applied to Ethernet rings. When the Ethernet ring is complete, it can prevent the data ring from causing a broadcast storm, and when a link on the Ethernet ring is disconnected, it can quickly activate the backup link to restore the communication path between the nodes on the ring network. The RRPP link fault detection and recovery mechanism mainly depends on the polling mechanism and link status change notification mechanism. [0003] The polling mechanism is a mechanism for the master node of an RRPP ring to actively detect the health status of the ring network. The master node periodically sends a HELLO message from its main port, which is propagated on the ring through each trans...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/26H04L12/437H04L29/06
Inventor 张义龙张平安于庆秋
Owner HUAWEI TECH CO LTD