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Ether ring net protection method, transmission node and host node

A transmission node and master node technology, applied in the field of network communication, can solve problems such as ring network link failure, failure to refresh MAC entries, service interruption, etc., and achieve the effect of avoiding ring network link failure

Active Publication Date: 2008-07-23
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, in this method of the prior art, if the RING_DOWN_FLUSH_FDB message is lost during transmission, each transmission node on the Ethernet ring network cannot refresh its own MAC table entry, which will also lead to serious consequences such as ring network link failure and service interruption.

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  • Ether ring net protection method, transmission node and host node
  • Ether ring net protection method, transmission node and host node
  • Ether ring net protection method, transmission node and host node

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] The method provided by the present invention mainly includes: when the transmission node that detects the failure of the ring network sends a LINK_DOWN message, start the first timer; if the timing duration of the first timer reaches the preset first time threshold, the If the RING_DOWN_FLUSH_FDB message is received, the LINK_DOWN message is resent, and the first timer is restarted.

[0029] After the master node on the Ethernet ring network receives the LINK_DOWN message, it sends a RING_DOWN_FLUSH_FDB message from the primary port and the secondary port at the same time, and starts the third timer; if the third timer reaches the preset third time threshold, the slave port Or the secondary port has not received the response message, then r...

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Abstract

The invention provides an looped network protecting method, a transmission node and a main node, the main node is provided with a timer, the transmission node which detects looped network faults and sends the faults to the main node, the main node sends looped network refreshing message after the main node receives looped network fault message, and meanwhile the timer is started, if the main node does not receive response message in predetermined time, and then looped network refreshing message is sent again, wherein, the response message is sent to the main node after the transmission node which detects looped network faults receives the looped network refreshing message. The method, the transmission node and the main node prevent the looped network refreshing message from loosing in the process of transmitting, avoid serious results such as obstructed looped network link circuit, interrupted business and the like which are caused by the lost of the looped network refreshing message.

Description

technical field [0001] The invention relates to network communication technology, in particular to an Ethernet ring network protection method, a transmission node and a master node. Background technique [0002] The Ethernet automatic protection switching method is applied to the Ethernet ring network. There is one master node in an Ethernet ring network, and other network nodes are transmission nodes. Fig. 1 is a schematic structural diagram of an Ethernet ring network in the prior art, in which S1 is the master node, and other S2 to S6 are transmission nodes, wherein, one of the two ports connected to the Ethernet ring network by the master node is the master node port (P1 in Figure 1), and the other is a secondary port (P2 in Figure 1). If the ring network is not faulty, the secondary port of the master node is blocked; if the ring network is faulty, the master node opens the secondary port to forward data packets to maintain the connectivity of the ring network. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/437
Inventor 宋建永赵里遥王明辉
Owner NEW H3C TECH CO LTD
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