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Handover processing method in case of failed Ethernet automatic protection switching (EAPS) looped network link and switching equipment

A technology for link failure and switching equipment

Active Publication Date: 2011-04-06
MAIPU COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Fast Ethernet ring network, such as the specification of EAPS (RFC3619), has made a very general description of the processing of ring failure, but it is not easy to achieve a failover speed of 50ms in the implementation, especially in the same physical Ethernet ring When two EAPS rings are used for load balancing on the Internet, using the fault handling method described in the specification, it is more difficult, or even impossible, to make each EAPS ring switch over 50ms when a fault occurs

Method used

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  • Handover processing method in case of failed Ethernet automatic protection switching (EAPS) looped network link and switching equipment
  • Handover processing method in case of failed Ethernet automatic protection switching (EAPS) looped network link and switching equipment
  • Handover processing method in case of failed Ethernet automatic protection switching (EAPS) looped network link and switching equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 2 As shown in FIG. 2 , it is a schematic diagram of a link failure between transit nodes when the master nodes are located in different switches when there are two EAPS rings on one physical Ethernet ring. Five switches S1, S2, S3, S4, and S5 are connected to form a physical Ethernet ring, and there are two EAPS rings R1 and R2 on the physical Ethernet ring. The master node M of the EAPS ring R1 is on the switch S1, and its transit nodes are denoted by T, that is, T1, T2, T3 and T4 are on the switches S2, S3, S4 and S5 respectively. The master node of EAPS ring R2 is on S4, and its transit node is represented by t, that is, t1, t2, t3 and t4 are on switches S5, S1, S2 and S3 respectively.

[0039] If the link between S2 and S3 fails, both S2 and S3 will detect the failure of the port connected to the ring network. After the transmission nodes T1 and t3 represented by S2 detect that the link where port P1 is located is faulty, the operations performed b...

Embodiment 2

[0051] Such as image 3 , the link between S1 and S5 is faulty, and the EAPS nodes on both S1 and S5 will detect the link fault; after S1 detects that port P4 is faulty, the processing flow of switch S1 is as follows:

[0052] (1) as the master node M of the ring R1, send a ring failure refresh message to the ring through the port P3;

[0053] (2) as the transit node t2 of the ring R2, send a loop failure message and a loop failure refresh message to the ring through the port P3;

[0054] (3) Notify the forwarding table refreshing unit to refresh the forwarding table of the faulty port P4.

[0055] (4) notify the port forwarding mode processing unit to set port P4 about the data VLAN of R1 and R2 and the control VLAN as blocking mode;

[0056] After the switch S5 detects a port failure, the processing is the same as that of the port P1 failure detected by S2 in Embodiment 1.

[0057] The processing of S2 and S3 is the same as the processing of S5 in Embodiment 1.

[0058] ...

Embodiment 3

[0060] Such as Figure 4 , the master node M of ring R1 and the master node m of ring R2 are both located on switch S1. If the link between S1 and S5 fails, the processing flow of switch S1 is as follows:

[0061] (1) notify the port forwarding processing unit to set the data VLAN about the ring R1 and the ring R2 on the port P3 to be the forwarding mode;

[0062] (2) M and m send a loop failure refresh message to the ring respectively through port P3;

[0063] (3) M and m refresh the forwarding table of port P4.

[0064] (4) notify the port forwarding mode processing unit to set the data VLAN and the control VLAN about R1 and R2 on the port P4 as blocking mode;

[0065] The processing of S5 is the same as the processing of S2 in Embodiment 1.

[0066] The processing of S2, S3 and S4 is the same as that of S5 in Embodiment 1.

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Abstract

The invention provides a handover processing method and switching equipment realizing the method, wherein by using the method, the handover of the EAPS looped network can be speeded up in case of failed Ethernet automatic protection switching (EAPS) looped network link when two EAPS loops are utilized on the same physical Ethernet ring for load balance. The handover processing method comprises the following steps: node switching equipment in an EAPS loop detects that a link corresponding to a local physical port is failed; the node switching equipment informs other node switching equipment on the two EAPS loops on which the port corresponding to the failed link is located that the loop is failed, executes the operation of refreshing routes on the local failed port, and setting the control VLAN and data VLAN of the local failed port in a blockage mode; and the other node switching equipment on the two EAPS loops executes the operation of refreshing routes on the ports of the two EAPS loops and sets the modes of the control VLAN and data VLAN of the ports after being informed that the loop is failed.

Description

technical field [0001] The present invention relates to fast Ethernet technology, in particular to Ethernet ring network EARS (Ethernet Automatic Protection Switching) technology. Background technique [0002] Fast Ethernet ring network, such as the specification of EAPS (RFC3619), has made a very general description of the processing of ring failure, but it is not easy to achieve a failover speed of 50ms in the implementation, especially in the same physical Ethernet ring When two EAPS rings are used for load balancing on the Internet, using the fault handling method described in the specification, it is even more difficult, or even impossible, to make each EAPS ring fail to switch within 50 ms. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a processing method that can speed up the switching of the EAPS ring network when the link of the EAPS ring network fails when two EAPS rings are used for load balancing on...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/24H04L12/26H04L45/28
Inventor 何三波
Owner MAIPU COMM TECH CO LTD
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