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A method, system and device for forwarding data frames

A data frame and equipment technology, applied in the field of communication, can solve problems such as network bandwidth waste and unreasonable use of network resources, and achieve the effect of avoiding waste

Active Publication Date: 2012-02-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As long as the working tunnel fails, whether it is a device failure or a link failure, whether it is a single failure or multiple failures, the entire working tunnel will be discarded and the entire backup tunnel will be activated, resulting in unreasonable use of network resources and a waste of network bandwidth.

Method used

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  • A method, system and device for forwarding data frames
  • A method, system and device for forwarding data frames
  • A method, system and device for forwarding data frames

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] The embodiment of the present invention provides a method for forwarding data frames, see Figure 4 Provided is a schematic diagram of the network structure, in which the source device S sends a data frame to the destination device D, and the data frame carries the B-VID1 identifier, which indicates that the data frame will be forwarded through the working tunnel identified by B-VID1, and the device A and Take a failure between devices C (such as a link failure, or a failure of the forwarding device between devices A and C) as an example for illustration, see Figure 5 In this embodiment, the upstream near-end device of the fault part enables the segment protection forwarding table, and suspends the use of the non-fault forwarding table, and forwards the data frame through the segment protection tunnel corresponding to the fault part, which specifically includes the following steps:

[0067] Step 101: When the working tunnel identified by B-VID1 fails, notify the upstre...

Embodiment 2

[0087] The embodiment of the present invention provides a method for forwarding data frames, see Image 6 Provided is a schematic diagram of the network structure, in which the source device S sends a data frame to the destination device D, and the data frame carries a B-VID identifier, which indicates that the data frame will be forwarded through the working tunnel identified by the B-VID, and the device A and For example, if a fault occurs between devices C, see Figure 7 In this embodiment, the upstream near-end device and the downstream near-end device of the faulty part modify the identification of the tunnel in the data frame, and forward the data frame through the segment protection tunnel corresponding to the faulty part, specifically including the following steps:

[0088] Step 201: When the working tunnel identified by the B-VID fails, notify the upstream near-end device A and the downstream near-end device C of the faulty part.

[0089] Step 202: After receiving th...

Embodiment 3

[0100] The embodiment of the present invention provides a method for forwarding data frames, see Figure 8 Provided is a schematic diagram of the network structure, in which the source device S sends a data frame to the destination device D, and the data frame carries a B-VID identifier, which indicates that the data frame will be forwarded through the working tunnel identified by the B-VID, and the device A and For example, if a fault occurs between devices C, see Figure 9 In this embodiment, the upstream near-end device and the downstream near-end device of the faulty part respectively encapsulate and decapsulate the data frame, and forward the data frame through the segment protection tunnel corresponding to the faulty part, specifically including the following steps:

[0101] Step 301: When the working tunnel identified by the B-VID fails, notify the upstream near-end device A and the downstream near-end device C of the faulty part.

[0102] Step 302: After receiving the...

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PUM

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Abstract

The present disclosure discloses a method, system, and device for forwarding data frames, and relates to the communication field. The method includes the following steps: An upstream near-end device in a faulty part of a working tunnel activates a segmental protection tunnel after receiving a data frame when a part of the working tunnel fails, where the start node of the segmental protection tunnel is the upstream near-end device and the end node of the segmental protection tunnel is a downstream near-end device in the faulty part; the upstream near-end device forwards the data frame to the downstream near-end device through the segmental protection tunnel; and the data frame at the downstream near-end device is forwarded to the destination device through the faultless part of the working tunnel. The present disclosure provides segmental protection for the PBB TE tunnel.

Description

technical field [0001] The invention relates to the communication field, in particular to a method, system and equipment for forwarding data frames. Background technique [0002] As the bearer network technology of the next-generation network, Ethernet technology has the advantages of low cost, simple operation, and convenient upgrade. Ethernet technology is developing from a single network to a layered and connection-oriented direction, gradually forming the current layered Ethernet technology. During the development process, PBB TE (Provider Backbone Bridge Traffic Engineer, operator backbone network traffic engineering), that is, PBT (Provider Backbone Transport, operator backbone network transmission) technology has emerged. [0003] PBB TE implements the connection-oriented feature of Ethernet and is a derivative technology of the Ethernet standard. It closes the spanning tree, flooding mechanism and broadcast mechanism of traditional Ethernet, and provides various serv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L29/06H04L12/56H04L45/24H04L45/28H04L69/40
CPCH04L29/12839H04L61/6022H04L12/4633H04L69/40H04L29/14H04L29/0653H04L45/28H04L12/4604H04L69/22H04L2212/0025H04L45/22H04L2212/00H04L2101/622
Inventor 薛莉
Owner HUAWEI TECH CO LTD