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Method for accelerating switching during Ethernet automatic protection switching failure

A technology of Ethernet ring network in case of failure, which is applied in the field of Ethernet technology and Ethernet ring network EAPS protocol, which can solve the problems of increasing the complexity of the protocol, and achieve the effect of improving the speed of failover and reducing the probability of refreshing

Active Publication Date: 2010-02-17
MAIPU COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for accelerating data switching when the EAPS ring network is faulty, aiming at the above-mentioned shortcomings of the prior art, especially the shortcoming that the transmission node increases the complexity of the protocol during failover

Method used

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  • Method for accelerating switching during Ethernet automatic protection switching failure
  • Method for accelerating switching during Ethernet automatic protection switching failure
  • Method for accelerating switching during Ethernet automatic protection switching failure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 2 , when the physical line between transit node 2 and transit node 3 fails, both transit node 2 and transit node 3 detect the fault, and transit node 2 and transit node 3 respectively perform the following operations: generate a LINK_DOWN message and a RING_DOWN_FLUSH_FDB message Then send the LINK_DOWN message to the master node, and send the RING_DOWN_FLUSH_FDB message to other transmission nodes; and refresh its own MAC entry.

[0023] After receiving the first LINK_DOWN message, the master node modifies the spanning tree state of the secondary port to the forwarding state, refreshes the MAC entry, and sends the message to transit nodes 1, 2, 3, 4, and 5 on the ring through the primary port and secondary port. RING_DOWN_FLUSH_FDB message.

[0024] After the transfer node receives the LINK_DOWN message sent to the master node, it does not process the message and forwards it directly.

[0025] Transit node 1 should first receive the RING_DOWN_FLUSH_FD...

Embodiment 2

[0027] Such as image 3 , when the line between the master node and transit node 1 fails, transit node 1 detects the fault, generates a LINK_DOWN message and a RING_DOWN_FLUSH_FDB message, then sends the LINK_DOWN message to the master node, and sends the RING_DOWN_FLUSH_FDB message to transit node 2 , 3, 4, and 5; and refresh its own MAC entries. For the primary node, no matter whether it detects the line failure of its port P by itself or judges the line failure of its port P by receiving a LINK_DOWN message, it first sets the spanning tree state of its secondary port to the forwardable state, and generates The RING_DOWN_FLUSH_FDB message is sent from the secondary port S to transit nodes 5, 4, 3, 2 and 1. Since the faulty transit node 1 also sends the RING_DOWN_FLUSH message, it can also reduce the probability that the MAC entries of some transit nodes cannot be refreshed in time due to the loss of the RING_DOWN_FLUSH_FDB message.

Embodiment 3

[0029] Such as Figure 4 , when the line between the master node and transit node 5 fails, transit node 5 detects the fault, generates a LINK_DOWN message and a RING_DOWN_FLUSH_FDB message, then sends the LINK_DOWN message to the master node, and sends the RING_DOWN_FLUSH_FDB message to transit node 4 , 3, 2, and 1; and refresh its own MAC entries. For the master node, whether it detects the line fault of its secondary port S by itself or judges the line fault of its secondary port S by receiving a LINK_DOWN message, it must generate a RING_DOWN_FLUSH_FDB message and send it from the primary port P to the transmission Nodes 1, 2, 3, 4 and 5. Since the faulty transit node 5 also sends the RING_DOWN_FLUSH message, it can reduce the probability that the MAC entries of some transit nodes cannot be refreshed in time due to the loss of the RING_DOWN_FLUSH_FDB message.

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Abstract

The invention relates to a method for switching during a Ethernet automatic protection switching failure and discloses a method for accelerating the data switching during the Ethernet automatic protection switching (EAPS) ring network failure to overcome the disadvantage that a transmission node in prior art increases the protocol complexity during the failure switching. The method for accelerating the switching during the EAPS failure adopts the technical essential that if a node which is detected to have the failure is a transmission node, the transmission node detected to have the failure generates a ring network failure message and a ring network refresh message, and transmits the ring network failure message to a main node and the ring network refresh message to other transmission nodes, and then refreshes self-MAC list items; when the main node receives the ring network failure message, the state of a spanning tree of an auxiliary port of the main node is set to be a forwarding state, a ring network refresh message is respectively generated and is transmitted from a main port and the auxiliary port to all transmission nodes, and the main node refreshes self-list items; and when other transmission nodes receive the ring network refresh message, the MAC list items thereof are refreshed. The invention is applied to the switching of the EAPS ring network failure.

Description

technical field [0001] The invention relates to the Ethernet technology and the Ethernet ring network EAPS (Ethernet Automatic Protection Switching) protocol, in particular to a method for switching the Ethernet ring network in case of failure. Background technique [0002] In the traditional EAPS ring network technology (see RFC3619), the EAPS ring is composed of a master node and several transmission nodes, such as figure 1 As shown, each node has a primary port P and a secondary port S. When the loop is normal, the primary node sets the spanning tree state of the secondary port S to a blocking state. There are two methods for the master node to judge the fault of the Ethernet ring network in the current standard: the first is that the master node periodically sends a fault detection message (HELLO) from the primary port P, and if it can receive the fault from the secondary port S If no fault detection message is received, it indicates that the loop is complete; if no fau...

Claims

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Application Information

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IPC IPC(8): H04L12/437
CPCH04L12/437
Inventor 何三波
Owner MAIPU COMM TECH CO LTD
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