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Ethernet ring protection switching method, node and system

A link switching, Ethernet technology, applied in the field of nodes and systems, link switching methods, can solve the problems such as the inability to fully utilize the bandwidth of the spare link, and achieve the effect of improving the utilization efficiency

Active Publication Date: 2012-10-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the above-mentioned link switching in the Ethernet ring, the inventor found that there are at least the following problems in the prior art: link switching can only be triggered under the condition of link failure or manual forced switching, which makes the standby link large Part of the time is idle, and the bandwidth of the backup link cannot be fully utilized

Method used

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  • Ethernet ring protection switching method, node and system
  • Ethernet ring protection switching method, node and system
  • Ethernet ring protection switching method, node and system

Examples

Experimental program
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Embodiment 1

[0030] An embodiment of the present invention provides a link switching method in an Ethernet ring, such as figure 2 shown, including:

[0031] 101. Determine whether the current node is the lowest bandwidth node according to bandwidth information of the current node and received bandwidth information corresponding to other nodes in the Ethernet ring.

[0032] Wherein, the bandwidth information corresponding to the current node may be bandwidth information corresponding to a port with the lowest bandwidth among ports participating in the current link switching on the current node. Correspondingly, the bandwidth information corresponding to other nodes may also determine the bandwidth information of the node itself in the same manner. It should be noted that in a network composed of various nodes, a node may participate in multiple layers of Ethernet rings at the same time, and there may also be multiple ports on the current node. In the description of the present invention, ...

Embodiment 2

[0040] An embodiment of the present invention provides a link switching method in an Ethernet ring, such as image 3 shown, including:

[0041] 201. Receive a bandwidth information message sent by other nodes in the Ethernet ring, where the bandwidth information message includes node information and bandwidth information corresponding to the sending node that sent the bandwidth information message.

[0042] Wherein, the bandwidth information message may include: a bandwidth change message and a node online message, which are message forms based on the extension of the R-APS protocol. The form of the existing R-APS protocol message is shown in Table 1, which is used to realize the status intercommunication between nodes. The R-APS protocol message includes 12 bytes, four of which are request fields, six bytes of node information, and 24 bytes of reserved fields at the end.

[0043]

[0044] Table 1

[0045] In the existing R-APS protocol message, only five request fields ar...

Embodiment 3

[0088] An embodiment of the present invention provides a node, which can be applied to an Ethernet ring, and is one of multiple nodes in the Ethernet ring. Each node in the Ethernet ring communicates bandwidth information and realizes link switching, such as Figure 5 As shown, the node includes: a node determining unit 31 , a blocking unit 32 , and an opening unit 33 .

[0089] The node determination unit 31 is configured to determine whether the current node is the lowest bandwidth node according to the bandwidth information of the current node and the received bandwidth information corresponding to other nodes in the Ethernet ring.

[0090] The blocking unit 32 is configured to block the port with the lowest bandwidth among the ports belonging to the Ethernet ring on the current node when the node determining unit 31 determines that the current node is the node with the lowest bandwidth.

[0091] The opening unit 33 is configured to open a port on the current node belonging...

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Abstract

The present invention relates to the technical field of communications. Disclosed in an embodiment of the present invention are an Ethernet ring protection switching method, node and system, capable of switching a service transmission path according to the bandwidth of a link and maximizing the service capacity of an Ethernet ring network. The method of the present invention comprises: according to the bandwidth information of a current link and the bandwidth information of other links on the ring, judging whether the current link is a low-bandwidth link; if the current link is a low-bandwidth link, then blocking the port corresponding to the current link; if the current link is not a low-bandwidth link, then enabling the port corresponding to the current link. The embodiment of the present invention is mainly used in the process of Ethernet ring protection switching.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a link switching method, node and system in an Ethernet ring. Background technique [0002] Usually, the Ethernet ring is not in a closed loop state, and some links in the Ethernet ring are standby links in blocked state, such as figure 1 (a), where the link For the backup link, the link for a normal working link. In order to ensure the stability of the link in the ring network, the link in the Ethernet ring is usually switched through the Ring-Automatic Protection Switching (R-APS) protocol, and the Local Area Network (Local Area Network) , LAN) services to provide protection. [0003] In the prior art, the link switching method in the Ethernet ring is Ethernet Ring Protection Switching (Ethernet Ring Protection Switching, ERPS), which is based on the R-APS protocol to send R-APS protocol messages between nodes to realize The protocol intercommunication and protect...

Claims

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Application Information

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IPC IPC(8): H04L12/437H04L12/56
CPCH04L12/4625H04L12/437
Inventor 谢荣黄毅青
Owner HUAWEI TECH CO LTD
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