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System, equipment and method for setup of P2MP MS-PW (point-to-multipoint multi-segment pseudo wire)

A P2MPMS-PW, equipment technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problems of heavy static configuration workload, business loss, lack of efficiency, etc., to improve the establishment efficiency, avoid configuration operations, and simplify The effect of the build process

Inactive Publication Date: 2013-03-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since P2MP PW involves a large number of devices, the workload of static configuration is heavy and inefficient, and if the configuration is wrong, it will cause great loss to the business

Method used

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  • System, equipment and method for setup of P2MP MS-PW (point-to-multipoint multi-segment pseudo wire)
  • System, equipment and method for setup of P2MP MS-PW (point-to-multipoint multi-segment pseudo wire)
  • System, equipment and method for setup of P2MP MS-PW (point-to-multipoint multi-segment pseudo wire)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The establishment process of P2MP MS-PW is as image 3 Shown, including:

[0054] 31: The source TPE configures P2MP MS-PW establishment information. The P2MP MS-PW establishment information includes Attachment Group Identifier (AGI), Source Attachment Individual Identifier (SAII), and explicit routing information.

[0055] Further, the source TPE can be configured to carry LSP information in advance. For example, in P2MP

[0056] When the PW segment in the MS-PW is P2MP, the P2MP MS-PW needs to be configured with LSP information that carries the PW segment. Here, the P2MP MS-PW segment of P2MP refers to the situation where one SPE is connected to multiple SPEs or multiple TPEs, such as Picture 10 The PW2 segment shown is of the P2MP type, and SPE1 is connected to the three leaf nodes TPE2, TPE3, and TPE4. For example, the configured LSP information may be the identification of the LSP, for example, may be an LSP quintuple, including a source IP address, a destination IP a...

Embodiment 2

[0068] Figure 4 , Figure 6 ~ Figure 7 A schematic diagram of a scenario for providing segment redundancy protection of P2MP MS-PW. Figure 4 , Figure 6 ~ Figure 7 Among them, TPE1 is the source node, and TPE2 to TPE5 are leaf nodes. P2MP MS-PW segmented protection scenarios applicable to this embodiment are not limited to this. The establishment process of P2MP MS-PW with segment protection function is as follows: Figure 5 Shown, including:

[0069] 51: The source TPE configures P2MP MS-PW establishment information, including AGI, SAII, explicit routing information, and active and backup information for explicit routing.

[0070] For example, the active / standby information of the explicit route may be the active / standby information of the SPE node in the explicit route. The active / standby information here is used to identify the active / standby status of the SPE node or the port of the SPE node. The SPE node or the port of the SPE node in the active state is the device or dev...

Embodiment 3

[0085] This embodiment provides a method for establishing a P2MP MS-PW, which provides segmented protection for the P2P MS-PW by establishing a virtual P2MP MS-PW. Among them, the virtual P2MP MS-PW refers to the PW established in the P2MP MS-PW manner, but only the P2P PW between one leaf node and the source node is working, and the PW of other leaf nodes and the source node does not forward data. The application scenario example of the method for establishing P2MP MS-PW provided in this embodiment is as follows: Figure 8A As shown, TPE1 is the source node, TPE2 and TPE3 are leaf nodes, and the standby TPE3 is regarded as the TPE node of the virtual P2MP MS-PW connected to the CE, then Figure 8A The PW shown between CE1 and CE2 can be regarded as a virtual P2MP MS-PW, but in fact the PW is still the P2PMS-PW between CE1 and CE2.

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Abstract

The invention relates to a system, equipment and a method for setup of P2MP MS-PW (point-to-multipoint multi-segment pseudo wire). The method includes: a TPE (terminating provider edge) configures P2MP MS-PW setup information which includes explicit route information; the TPE sends an LDP (label distribution protocol) message containing the P2MP MS-PW setup information to an SPE (switching provider edge); and the SPE receives the LDP message, then finds out an outlet port of the LDP message according of the explicit route information and forwards the LDP message through the outlet port.

Description

Technical field [0001] The present invention relates to pseudo wire establishment technology, in particular to a method for establishing P2MP MS-PW, source termination operator edge equipment and P2MP MS-PW system. Background technique [0002] The pseudo wire PW (Pseudo Wire) is used to simulate user services between CE (Customer Edge) devices. The application of PW is divided into two methods: point-to-point pseudo-wire P2P PW (Point-to-Point PW) and point-to-multipoint pseudo-wire P2MP PW (Point-to-Multi Point PW). For point-to-multipoint services, in order to ensure effective use of resources, P2MP PW is established to ensure point-to-multipoint services. P2MP PW is a unidirectional transmission of PW from the source node to the leaf node, which realizes multicast service simulation. By deploying P2MP PW and deploying traffic replication points at appropriate nodes in the network, traffic optimization can be achieved and resources can be used rationally. P2MP PW is divided...

Claims

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Application Information

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IPC IPC(8): H04L12/723H04L12/707H04L45/50H04L45/24
CPCH04L45/507H04L45/68H04L45/00H04L41/00
Inventor 薛莉
Owner HUAWEI TECH CO LTD
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