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Path protective switching processing method, device and system, and forwarding device

A forwarding device and path protection technology, applied in the field of communication, can solve the problems that cannot meet the real-time requirements, cannot realize fast protection switching, etc.

Active Publication Date: 2016-11-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a path protection switching processing method, device, system, and forwarding equipment to at least solve the problems that the existing path switching scheme cannot realize fast protection switching and cannot meet scenarios with high real-time requirements.

Method used

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  • Path protective switching processing method, device and system, and forwarding device
  • Path protective switching processing method, device and system, and forwarding device
  • Path protective switching processing method, device and system, and forwarding device

Examples

Experimental program
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Embodiment 1

[0095] This preferred embodiment, in conjunction with Table 1-Table 2 described in the above embodiment, and Figure 8-Figure 9 , use the Controller CMC to initiate a new MPLS_TP LSP 1:1 protection, the protection group ID is 16, the working path is A1-Z1 (forwarder NE1’s A1 port to Forwarder NE2’s Z1 port), and the protection path is A2-Z2 (Forwarder NE1’s Forwarder NE2’s A2 port to Forwarder NE2’s Z2 port), the return type, the WTR is 5 minutes, and the OAM monitoring of A1-Z1 and A2-Z2 has taken effect as an example.

[0096] The concrete technical scheme that present preferred embodiment adopts comprises the following steps:

[0097] Step 1: The CMC initiates a new MPLS_TP LSP1:1 linear protection group, the protection group ID is 16, and the operation type is new. Extend the type member of the message type of the Openflow protocol header, select 241 as the identifier of the APS message from the unused type value, and the value of the message member id of APS is 16; set t...

Embodiment 2

[0106] In conjunction with Table 1-2 in the foregoing embodiments, Figure 8 and Figure 9 As an example, the Controller CMC initiates the modification of MPLS_TP LSP 1:1 protection, the protection group ID is 16, the working path is changed from A1-Z1 to A2-Z2, the protection path is changed from A2-Z2 to A1-Z1, and other attributes are not modified. The scheme of this embodiment will be described.

[0107] The technical solution adopted in this embodiment comprises the following steps:

[0108] Step 1: The CMC initiates modification of the MPLS_TP LSP1:1 linear protection group, the protection group ID is 16, and the operation type is modification. Modify the APS message member action to 2, and identify the operation type as modify; modify the third group of information in the data message, that is, the group entry corresponding to the working LSP port, including the group entry Y1 to identify the binding of the outgoing port of A2 and the outgoing label of the LSP, The g...

Embodiment 3

[0115] Combined with Table 1-2, Figure 8 and Figure 9 , taking the Controller CMC as an example to delete the MPLS_TP LSP 1:1 protection, the protection group ID is 16, the working path is A2-Z2, and the protection path is A1-Z1 as an example to illustrate the technical solution of this embodiment.

[0116] Concrete embodiment comprises the steps:

[0117] Step 1: The CMC initiates deletion of the MPLS_TP LSP1:1 linear protection group, the protection group ID is 16, and the operation type is delete. Change the APS message member action to 3, and identify the operation type as delete; other member information remains unchanged. And send it to NE1 and NE2 through the Openflow channel.

[0118] Step 2: The Openflow protocol processing components of NE1 and NE2 receive the Openflow protocol message, parse the type member of the message type, judge that it is the APS type agreed with the CMC according to the type value of 241, and forward it to the APS component;

[0119] St...

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Abstract

The present invention provides a path protective switching processing method, device and system, and a forwarding device. The method comprises: the forwarding device in an SDN obtains the state information of a current path in a path protective group included the forwarding device, wherein the current path includes a protective path and / or work path; the forwarding device performs automatic protective switching APS negotiation with other forwarding devices except the forward device in the path protective group; and the comprehensive decision is performed according to the negotiation result, a local external command and the state information, and the protective switching processing operation corresponding to the decision result of the comprehensive decision is executed to the current path in the path protective group, wherein the external command is configured to indicate the external control type of the protective switching operation. According to the invention, the problems can be solved that the current path switching scheme cannot realize rapid protective switching and cannot satisfy the scene with high real-time requirement.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a path protection switching processing method, device, system and forwarding equipment. Background technique [0002] Software defined network (SDN for short) is a research hotspot in the field of communication in recent years. The international standard organization ONF (Open networking forum, ONF for short) drafts SDN-related standard recommendations, focusing on the decoupling between the controller (Controller) and the forwarding device (Forwarder), standardizing the interface between the controller and the forwarding plane, and facilitating different manufacturers. The controller and forwarding equipment are jointly networked. [0003] The ONF has released the OpenFlow SwitchSpecification, the interface specification between the controller and the forwarding plane. The protocol implemented based on this interface specification is the Openflow protocol. ONF is relatively ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24
CPCH04L41/342
Inventor 孙德胜赵福川
Owner ZTE CORP
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