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Network node and fault recovery method of Ethernet ring network therein

A fault recovery and network node technology, applied in the link layer switching technology and the ring network field, can solve problems such as data packet forwarding interruption, achieve the effect of smooth fault recovery process, avoid traffic oscillation, and avoid broadcast storms

Active Publication Date: 2010-03-31
HEWLETT-PACKARD ENTERPRISE DEV LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] What the present invention aims to solve is the problem of interrupting the forwarding of all data messages when the ring network fails to recover in the prior art

Method used

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  • Network node and fault recovery method of Ethernet ring network therein
  • Network node and fault recovery method of Ethernet ring network therein
  • Network node and fault recovery method of Ethernet ring network therein

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Experimental program
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Embodiment Construction

[0047]During the recovery process of the ring network failure, when the node connected to the original fault point detects that the fault has been eliminated, it will temporarily block the ring port connected to the original fault point, that is, filter all data packets passing through the ring port, and the data The forwarding path of the message remains the same as when the ring network fails.

[0048] For a ring network working in a stable state, at this time, each node forwards the received unicast data message according to the outgoing port of the destination address of the message in the forwarding table of the node, and according to the data when the ring network fails The message forwarding path is forwarded to the node whose outbound port of the destination address of the message is a non-ring port, and the node forwards the message off the ring; for the received multicast data message and broadcast data message, it usually needs Nodes that reach the end of the forwar...

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Abstract

The present invention discloses an Ethernet network fault recovery method. The present invention comprises that when the elimination of the ring network fault is detected, a master node forwards out aunicast data packet of which the access is from a port, and the other nodes recover the packet forwarding; according to the forwarding path of the data packet after a sub part is blocked, the forwarding table information of the node is synchronized; and sub part is blocked by the master node. The present invention realizes the uninterrupted forwarding of the unicast data packet in the process ofrecovering the ring network fault, and avoids the possible broadcasting turmoil; meanwhile, the synchronization mechanism of a forwarding table avoids the flow oscillation caused by the ring network because of the refreshing and forwarding of all the nodes, thereby the fault recovery process is smoother.

Description

technical field [0001] The invention relates to a link layer exchange technology and a ring network technology, in particular to a link layer Ethernet ring network fault recovery method and a network node applied thereto. Background technique [0002] With the development of Ethernet technology in the field of metropolitan area network and access network, the Ethernet ring network has been applied more and more. An Ethernet ring network usually refers to a link layer network with a redundant structure, which has failover and failover functions. [0003] Extreme company proposed a single ring network failover and recovery method in US patent US6766482, and expanded it into a scheme that can realize multiple intersecting ring network failover and recovery in European patent application EP1575221, named EAPS (Ethernet Automatic ProtectionSwitching, Ethernet Automatic Protection Switching); the applicant disclosed another fault-tolerant scheme for a single ring network and a pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/56H04L12/437H04L45/28
Inventor 宁军
Owner HEWLETT-PACKARD ENTERPRISE DEV LP
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