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State transition method for implementing ether ring redundancy protection

A technology of state transfer and redundancy protection, applied in the direction of data exchange through path configuration, digital transmission system, electrical components, etc., can solve problems such as taking a long time

Inactive Publication Date: 2004-11-03
BEIJING HUAWEI DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The Spanning Tree Protocol (Spanning Tree Protocol) as we know it may take a long time to recover consistently in a topology change event

Method used

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  • State transition method for implementing ether ring redundancy protection
  • State transition method for implementing ether ring redundancy protection
  • State transition method for implementing ether ring redundancy protection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0086] A specific embodiment is given below to further describe the state transfer method of the Ethernet ring redundancy protection of the present invention in detail.

[0087] Such as Figure 10 Shown is the main flow of the embodiment. The main task is responsible for reading the message from the message queue. If it is a timer message, it will enter the timer message processing flow shown in Figure 11; if it is a data packet message, it will enter the data packet processing flow shown in Figure 12; if it is interface event message, enter the interface event message processing flow shown in FIG. 13 . After a message is processed, continue to read messages from the message queue.

[0088] As shown in Figure 11, it is the timer message processing flow. First judge whether the message is empty, if it is an empty message, end the processing. If the message is not empty, then judge whether the service is enabled, if not, end the processing. If enabled, check whether the cur...

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PUM

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Abstract

This invention provides a method for state transition of ether loop circuit quick redundancy protection. The master device in the domain may has an initial state, an idle state, an ether loop circuit complete state and a defect state mainly for continuously and definitely sending loop circuit detection messages to detect if the loop circuit exists, if so, the required protected VLAN message is blocked at the subport, if it breaks, then the VLAN message is allowed to pass the subport and a message of the broken loop circuit and MAC refresh control message is transmitted. The subdevice may have an initial state, idle, active state, non-activating state and an alter state mainly for allowing loop circuit checking message to pass, receiving MAC refresh control messages of activated and broken links and forwarding the message to the next subdevice.

Description

Technical field: [0001] The invention belongs to the field of broadband network communication, and in particular relates to a state transfer method for realizing redundant protection of an Ethernet loop. Background technique: [0002] There is redundancy on many LANs or WANs, and there is a ring topology. Loops in the Ethernet environment may cause network storms. To avoid this phenomenon, it is necessary to perform corresponding packet blocking on the ring to cut off the ring. We hope that when a loop occurs, the redundant loop can be cut off as soon as possible; when the redundant loop no longer exists, the original blockage can be quickly unblocked. In short, after the topology change of the ring, it is our goal to complete the convergence in a short time. [0003] The Spanning Tree Protocol (Spanning Tree Protocol) as we know it may take a long time for consistent recovery in a topology change event. The new Rapid Spanning Tree Protocol (Rapid Spanning Tree Protocol)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26H04L12/28
Inventor 邓沈鸿
Owner BEIJING HUAWEI DIGITAL TECH
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