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A method of loop generation protection and Ethernet ring system

A technology of an Ethernet ring network and a ring, applied in the field of the master node in the Ethernet ring network, it can solve the problems such as the decrease of CPU efficiency and increase the processing burden of the CPU, and achieve the effect of avoiding the decrease of CPU efficiency.

Active Publication Date: 2008-07-09
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the master node periodically sends protocol messages carrying the timer timing information of each node. After each node receives the protocol message, it needs to report it to the CPU for processing, which increases the processing burden of the CPU and reduces the efficiency of the CPU.

Method used

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  • A method of loop generation protection and Ethernet ring system
  • A method of loop generation protection and Ethernet ring system

Examples

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Embodiment Construction

[0033] FIG. 1 is a flowchart of a method for preventing loop generation according to an embodiment of the present invention. As shown in Figure 1, the following steps are included:

[0034] Step 101, when a port of the transit node on the Ethernet ring network changes from a faulty state to a healthy state, the transit node sets the port to a pre-blocking state.

[0035] Step 102, when the master node in the Ethernet ring network detects that the ring of the Ethernet ring network is complete, it blocks its secondary port, and repeatedly sends refresh messages on the Ethernet ring network until it receives the message sent by itself. up to the refresh message.

[0036] In this step, the master node can detect the integrity of the ring through a polling mechanism.

[0037] Step 103, after receiving the refresh message sent by the master node, the transit node releases the port in the pre-blocking state.

[0038] In the solution shown in Figure 1, when the port changes from a ...

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Abstract

The invention discloses a method for preventing loop, comprising that: when a transmission node at a port of the Ethernet ring changes from fault condition into sound condition, the transmission node sets the port into pre-blocking status; when a main node in the Ethernet ring finds that the Ethernet ring has a complete loop, the main node blocks its own side port and repeatedly sends refreshment message in the Ethernet ring until the main node receives the refreshment message which is sent by the main node; after the transmission node receiving the refreshment message sent by the main node, open the port which is in pre-blocking status. The invention also discloses an Ethernet ring system and a main node in the Ethernet ring. The technical proposal of the invention leads the timing period of the timer of every node in the Ethernet ring to be unnecessary, thus avoiding reducing of the efficiency of CPU.

Description

technical field [0001] The invention relates to the technical field of Ethernet ring network protection, in particular to a method for preventing loop generation, an Ethernet ring network system and a master node in the Ethernet ring network. Background technique [0002] The Fast Ethernet Ring Protection Protocol can prevent broadcast storms caused by data loops in the Ethernet ring network. When a link on the Ethernet ring is disconnected, it can quickly activate the backup link to restore the communication between the nodes on the ring network. communication. [0003] The following are some basic concepts and key technologies in the Fast Ethernet Ring protection protocol: [0004] Domain: The Ethernet ring network protection protocol runs on the Ethernet ring network, and all nodes on the Ethernet ring network belong to a domain. [0005] Master node: There is a master node in each domain, which is the main operation node that initiates loop detection and loop preventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/437H04L12/56H04L12/24H04L12/46H04L45/02
Inventor 王明辉
Owner NEW H3C TECH CO LTD
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