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Method, equipment and system for computing service path

A business path and path calculation client technology, applied in the field of business path calculation, can solve the problems of calculation failure, increase path calculation time, prolong path calculation time, etc.

Active Publication Date: 2012-04-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. The process of requiring two path calculation requests increases the time of path calculation
[0009] 2. Calculate two unidirectional service paths separately. It is very likely that the service path calculated for the first time does not meet the path request message sent for the second time, resulting in the failure of the second path calculation, so that the path calculation needs to be re-initiated. The time for path calculation is further extended

Method used

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  • Method, equipment and system for computing service path
  • Method, equipment and system for computing service path
  • Method, equipment and system for computing service path

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] For the convenience of illustration, establish as figure 2 As shown in the network topology, the network consists of A, B, C, D, E, F, G, H, I nodes and corresponding links. PCE is responsible for the path calculation of the network. The two-way service with asymmetric bandwidth of node E, in which the bandwidth requirement in the downlink direction (A——>E) is 2.5G, and the bandwidth requirement in the uplink direction (E——>A) is 155M.

[0033] Such as image 3 As shown, it is a schematic flowchart of a service path calculation method in Embodiment 1 of the present invention, and the embodiment of the present invention describes the case of performing path calculation for bidirectional services with asymmetric bandwidth. Include the following steps:

[0034] In step S301, the source node sends a path request message to the PCE.

[0035] combine figure 2 As shown, node A sends a path request message to the PCE, and the path request message carries RP parameters (Re...

Embodiment 2

[0048] Embodiment 2 of the present invention, a route calculation unit for implementing service route calculation, including:

[0049] A receiving module, configured to receive a path request message, where the path request message includes bandwidth requirements in an uplink direction and a downlink direction.

[0050] a path calculation module, configured to receive the path request message sent by the judging module, obtain a corresponding path message according to the path request message and a pre-stored traffic engineering database, and send the path message to the sending module .

[0051] The sending module is used for sending the received signal.

[0052] Wherein, it also includes a judging module, which is used to judge the business direction type according to the business direction type contained in the received path request message, and if the business direction type is one-way, then send an error message to the sending module.

[0053] For the specific signal p...

Embodiment 3

[0054] Embodiment 3 of the present invention, a network system for realizing service path calculation, including:

[0055] The path computation client PCC is used to send a path request message to the path computation element PCE and receive information returned from the path computation element PCE, and make a corresponding response according to the information returned by the path computation element PCE; the path request message Including uplink and downlink bandwidth requirements.

[0056] The path computation unit PCE is configured to obtain corresponding path information according to the path request message and the pre-stored traffic engineering database; and send the path information to the path computation client PCC.

[0057] Wherein, the PCE is also used to judge the service direction type according to the service direction type contained in the received path request message, and if the service direction type is unidirectional, send an error message to the path Cal...

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PUM

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Abstract

The embodiment of the invention discloses a method for computing a service path, which comprises the following steps: receiving a path request message which comprises bandwidth requirements of an uplink direction and a downlink direction; acquiring a corresponding bidirectional path message according to the bandwidth requirements of the uplink direction and the downlink direction in the path request message and a pre-stored traffic engineering database; and sending the path message. The embodiment of the invention also discloses equipment and a system for realizing the computing of the service path. The method, the equipment and the system for computing the service path achieve the aims of shortening the time spent on the path computing and improving the success rate of the path computing.

Description

technical field [0001] The present invention relates to the field of network technology, in particular to a method, device and system for calculating a service path. Background technique [0002] The data communication network includes various service types such as TDM (Time Division Multiplex, Time Division Multiplex) service, packet service, wavelength service, etc. These services usually have a certain directionality, such as unidirectional service and bidirectional service. One-way service means that the service can only be transmitted from the local node to the remote node along one direction; while the two-way service means that the source and sink nodes of the service are relative, and the service can be transmitted from the local node to the remote node along one direction. The end node can also transmit from the remote node to the local node in the opposite direction. Since the two-way service belongs to one service, the service flows in the two directions usually ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/701
Inventor 章发太
Owner HUAWEI TECH CO LTD