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Method and system for sharing bandwidth of multiple pseudowires, and provider edge node

A multi-segment pseudo-wire and shared bandwidth technology, applied in the field of multi-segment pseudo-wire, can solve the problem of not being able to ensure that some pseudo-wire segments share the same LSP, and achieve the effects of convenient data switching, small changes, and strong versatility

Inactive Publication Date: 2016-12-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the scenario of MS-PW display routing or dynamic routing, the existing mechanism cannot ensure that some pseudo-wire segments used for MBB backup MS-PW and active MS-PW share the same LSP

Method used

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  • Method and system for sharing bandwidth of multiple pseudowires, and provider edge node
  • Method and system for sharing bandwidth of multiple pseudowires, and provider edge node
  • Method and system for sharing bandwidth of multiple pseudowires, and provider edge node

Examples

Experimental program
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Embodiment 1

[0065] In this embodiment, it is assumed that an existing pseudowire is called the active pseudowire. Now for MBB, a new multi-segment pseudowire needs to be established in the way of explicit routing. When the active MS-PW fails, the traffic will be transferred to this A newly established MS-PW is called a standby pseudowire. Figure 4 In order to show the structural diagram of two multi-segment pseudo-wires sharing the same LSP in the routing scenario, as shown in Figure 4 As shown, the active / standby MS-PW can share the same LSP on the PW segment between TPE1 and SPE1, where MS-PW1 is the active MS-PW, and MS-PW1 is the standby MS-PW; similarly, the active / standby MS-PW The PW segment of MS-PW between SPE3 and TPE2 can also share the same LSP. An Access Group Identifier (AGI, Attachment Group Identifier), a Source Attachment Individual Identifier (SAII, Source Attachment Individual Identifier) ​​and a Target Access Individual Identifier (TAII, Target Attachment Individual...

Embodiment 2

[0101] In this embodiment, it is assumed that an existing pseudowire is called the active pseudowire. Now for MBB, a new multi-segment pseudowire needs to be established in a dynamic routing mode. When the active MS-PW fails, the traffic is transferred to this A newly established MS-PW is called a standby pseudowire. Figure 6 It is a schematic diagram of the structure of two multi-segment pseudo-wires sharing the same LSP in the dynamic routing scenario, as shown in Figure 6 As shown, the PW segment between TPE1 and SPE1 can share the same LSP, and the PW segment between SPE3 and TPE2 can also share the same LSP. Figure 6 shown in the application scenario, with Figure 4 The shown application scenarios are basically the same, and the only difference lies in the routing manners on which the two are based. Can refer to Figure 4 understand the relevant descriptions.

[0102] Figure 7 based on Figure 6 The flow chart of Embodiment 2 of the method for sharing bandwidth ...

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Abstract

The invention discloses a method for multi-segment pseudowires sharing bandwidth, which sets the same bandwidth sharing identifier for the pseudowires sharing the same tunnel; the method includes: when a PE node sends a label mapping message for the pseudowires that can share the same tunnel, The label mapping message carries the bandwidth sharing identifier. The present invention also discloses a PE node, which is applied to an edge-to-edge pseudowire simulation system. The edge-to-edge pseudowire simulation system sets the same bandwidth sharing identifier for pseudowires that can share the same tunnel; The PE node includes: a sending unit, configured to send a label mapping message to other PE nodes for pseudowires sharing the same tunnel; wherein, the label mapping message carries the bandwidth sharing identifier. The invention discloses a system for sharing bandwidth by multiple sections of pseudowires, which includes PE nodes connected by pseudowires; the PE nodes are the aforementioned PE nodes. The technical scheme of the invention is simple to realize, low in cost and has strong versatility.

Description

technical field [0001] The present invention relates to a multi-segment pseudo-wire (MS-PW, Multi-Segment Pseudo Wire) technology, in particular to a method and system for multi-segment pseudo-wire sharing bandwidth, and a Provider Edge (PE, Provider Edge) node. Background technique [0002] With the development of IP data network, the scalability, upgradeability and compatibility and intercommunication capabilities of IP network itself are very strong, while the flexibility of upgrading, expansion and intercommunication of traditional communication networks is relatively poor, limited by transmission methods and The type of business, and the commonality of the newly built network is also poor, which is not suitable for intercommunication management. Therefore, in the process of upgrading and expanding the application of the traditional communication network, whether to build duplicate networks or make full use of existing or public resources to achieve the purpose of upgrad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70H04L29/06H04L12/24
Inventor 陈然金利忠王玉保吴波
Owner ZTE CORP