CN101127718A - Method of Establishing LSP in NGN Based on MPLS-TE - Google Patents
Method of Establishing LSP in NGN Based on MPLS-TE Download PDFInfo
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- 230000004044 response Effects 0.000 claims abstract description 16
- 238000013468 resource allocation Methods 0.000 claims abstract description 10
- 238000012423 maintenance Methods 0.000 claims abstract 16
- 238000013507 mapping Methods 0.000 claims description 29
- 238000012545 processing Methods 0.000 claims description 16
- 238000012217 deletion Methods 0.000 claims description 12
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- H04L45/00—Routing or path finding of packets in data switching networks
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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Abstract
一种基于多协议标签交换流量工程的下一代网络中标签交换路径的建立方法，包括：步骤S202，网管系统或网络运维系统向资源接纳控制功能的传送资源控制功能单元发送创建多协议标签交换的标签交换路径隧道的命令；步骤S204，传送资源控制功能单元接收到命令之后进行路径计算以及网络资源分配，并通知命令指示创建的标签交换路径隧道的头节点发起标签交换路径隧道的建立信令；步骤S206，头节点将建立信令经由一个或多个中间节点发送至尾节点，在头节点、一个或多个中间节点、和尾节点之间建立标签交换路径隧道；以及步骤S208，在标签交换路径隧道建立成功后，尾节点将成功响应经由一个或多个中间节点发送至头节点。
A method for establishing a label-switched path in a next-generation network based on multi-protocol label switching traffic engineering, comprising: step S202, the network management system or the network operation and maintenance system sends a transmission resource control function unit of the resource admission control function to create a multi-protocol label switching The command of the label switched path tunnel; step S204, the transmission resource control function unit performs path calculation and network resource allocation after receiving the command, and notifies the head node of the created label switched path tunnel to initiate the establishment signaling of the label switched path tunnel ; Step S206, the head node sends the establishment signaling to the tail node via one or more intermediate nodes, and establishes a label switched path tunnel between the head node, one or more intermediate nodes, and the tail node; and step S208, in the label After the switched path tunnel is successfully established, the tail node sends a success response to the head node via one or more intermediate nodes.
Description
Technical field
The present invention relates to the communications field, and especially, relate to the method for building up of label switched path (LSP) in a kind of next generation network (NGN) based on multi-protocol label switching traffic engineering (MPLS-TE).
Background technology
At present, existed (promptly for ITU-NGN resource allocation and controlled function subsystem, resource accommodating control function, definition RACF) (Y.RACF (Y.2111) standard) and based on the definition (Y.MPLS-RACF standard) of the RACF of multiprotocol label path traffic engineering (MPLS-TE).
Fig. 1 shows the structure according to the RACF of correlation technique.
In structure shown in Figure 1, comprise following functional unit: transmit resource and carry out functional unit (Transport Resource Enforcement Function Entity, TRE-FE), policy enforcement function unit (Policy Enforcement Function Entity, PE-FE), transmit resource control function units (Transport Resource Control Function Entity, TRC-FE), strategy decisive function unit (Policy Decision Function Entity, PD-FE), and resource accommodating control function (Resource Admission ControlFunction, RACF).
The function of each interface between the above-mentioned functions unit is as follows: the Rc interface is responsible for transmitting the network topology of network (Transport Functions) and the collection and the resource operating position in the network operation process of resource information collected feedback;
The Rs interface is responsible for service control layer (SCF) and is carried out the relevant mutual of service conversation abstract resource request with the strategy decisive function unit (PD-FE) that transmits network control preparative layer (RACF);
The Rt interface be responsible for strategy decisive function unit PD-FE with transmit request that net resource control function units (TRC-FE) carries out the session Internet resources and distribution relevant alternately;
The Ri interface is responsible for the cross-domain communication between the PD-FE;
The Rp interface is responsible for the intra-area communication between the TRC-FE.
Yet, in the definition of RACF and definition based on the RACF of MPLS-TE, all be not specifically defined the flow process of detailed multiprotocol label path label switching path (MPLS LSP) tunnel foundation and the mode of resource allocation, just pointed out transmission resource control function units (TRC-FE) the maintaining network topological sum resource information among the RACF, MPLS lsp tunnel static state is set up and the concrete mode of Resource Allocation in Networks and do not describe, this obviously can hinder Virtual network operator provides abundant more business to the user, and providing of broadband services is provided.
So far, effective solution is not proposed as yet at above-mentioned defective.
Summary of the invention
Consider the problems referred to above and make the present invention that for this reason, main purpose of the present invention is to provide a kind of scheme of setting up based on label switched path in the next generation network of multi-protocol label switching traffic engineering, to remedy the blank of this aspect in the existing standard.
According to embodiments of the invention, provide a kind of method for building up based on label switched path in the next generation network of multi-protocol label switching traffic engineering.
This method comprises: step S202, network management system or network O﹠M system send the order of the label switched path tunnel of creating multiprotocol label switching to the transmission resource control function units of resource accommodating control function; Step S204, the transmission resource control function units carries out path computing and Resource Allocation in Networks after receiving order, and the head node of the label switched path tunnel of notification command indication establishment is initiated the signaling of setting up of label switched path tunnel; Step S206, head node will be set up signaling and be sent to tail node via one or more intermediate nodes, set up label switched path tunnel between head node, one or more intermediate node and tail node; And step S208, after label switched path tunnel was set up successfully, tail node was sent to head node with success response via one or more intermediate nodes.
Wherein, in step S202, the order of setting up label switched path tunnel comprises quality of service requirement.
In addition, after step S208, further comprise: steps A, head node is set up successfully to transmitting resource control function units feedback label switched path tunnel; And step B, transmit resource control function units and set up successfully to network management system or network O﹠M system feedback label switched path tunnel.
Wherein, after step B, further comprise: step C, network management system or network O﹠M system are to transmitting the relevant information that resource control function units sends the stream of the label switched path that is mapped to label switched path tunnel; And step D, after the transmission resource control function units is received the relevant information of stream, the transmission resource of notice head node is carried out the mapping table clauses and subclauses that functional unit generates stream and label switched path, and notice transmits resource execution functional unit after the mapping table clauses and subclauses successfully generate, again by transmitting resource execution functional unit notice network management system or network O﹠M system;
In addition, when removing label switched path tunnel, can comprise following processing: network management system or network O﹠M system send the order of removing label switched path tunnel to transmitting resource control function units; Transmit resource control function units notice head node and initiate the dismounting signaling of label switched path tunnel; Head node will be removed signaling and be sent to tail node via one or more intermediate nodes, remove label switched path tunnel; After label switched path tunnel is removed successfully, tail node will be removed success response and will be sent to head node via one or more intermediate nodes; Head node is removed successfully to transmitting the resource control function units feedback; And transmit resource control function units and remove successfully to network management system or network O﹠M system feedback.
Wherein, when network management system or network O﹠M system learn remove successfully after, if have the relevant information of the stream that is mapped to label switched path in the label switched path tunnel, then further comprise following processing: network management system or network O﹠M system are to transmitting the mapping cancellation information that resource control function units sends the cancellation relevant information; After the transmission resource control function units is received mapping cancellation information, indication transmits resource and carries out the functional unit deletion stream corresponding with relevant information and the mapping table clauses and subclauses of label switched path, under the deletion case of successful, will delete successfully notice transmission resource control function units, will delete by the transmission resource control function units again and successfully notify network management system or network O﹠M system.
In addition, when adjusting label switched path tunnel, further comprise following processing: network management system or network O﹠M system send the order of adjustment label switched path tunnel and new quality of service requirement to transmitting resource control function units; Transmit the transmission resource of resource control function units notice head node and carry out the adjustment signaling that functional unit is initiated label switched path tunnel; Head node will be adjusted signaling and be sent to tail node via one or more intermediate nodes, adjust label switched path tunnel; After label switched path tunnel adjustment success, tail node will be adjusted success response and be sent to head node via one or more intermediate nodes; Head node is to transmitting the success of resource control function units feedback adjusting; And transmit resource control function units to network management system or network O﹠M system feedback adjustment success; Wherein, the mode to the adjustment of label switched path tunnel comprises: expand and reduction.
And, when network management system or network O﹠M system learn adjust successfully after, if there is the relevant information of the stream that is mapped to label switched path in the label switched path tunnel, then further comprise following processing: network management system or network O﹠M system send the order that indication increases new relevant information or cancels original relevant information according to the mode of adjusting to transmitting resource control function units; And transmit resource control function units indication transmission resource execution functional unit and carry out respective handling.
At this moment, when network management system or network O﹠M system when transmitting resource control function units and send indication and increase the order of new relevant information, transmit resource and carry out functional unit and generate the stream corresponding and the mapping table clauses and subclauses of label switched path with the relevant information that increases newly.
On the other hand, when network management system or network O﹠M system when transmitting resource control function units and send the order of the original relevant information of indication cancellation, transmit resource and carry out the functional unit deletion stream corresponding and the mapping table clauses and subclauses of label switched path with original relevant information.
By technique scheme of the present invention, the label switched path of having filled up multiprotocol label switching in the existing standard is set up and the blank of resource allocation aspect, the carrying out of convenient multiple business and broadband service.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the block diagram according to the RACF of correlation technique;
Fig. 2 is the flow chart based on the method for building up of LSP among the NGN of MPLS-TE according to the embodiment of the invention;
Fig. 3 is the signaling process figure according to the method for the embodiment of the invention;
Fig. 4 is according to the signaling process figure that removes lsp tunnel in the method for the embodiment of the invention; And
Fig. 5 is according to the signaling process figure that adjusts lsp tunnel in the method for the embodiment of the invention.
Embodiment
In the present embodiment, a kind of method for building up based on LSP among the NGN of MPLS-TE (Label Switch Path) is provided, wherein, utilize network function unit such as TRC-FE among network management system (NMS) or network O﹠M system (OSS) and the RACF and TRE-FE to realize the foundation of static MPLS lsp tunnel, dismounting and adjust, and the mode of Internet resources static allocation.
Below in the method that will describe, initiate related command by NMS or OSS to TRC-FE, network topology and resource information that TRC-FE possesses according to self again respond related command, and the TRE-FE during further the instruction transmission is netted finishes foundation, dismounting and the adjustment of relevant LSP.
As shown in Figure 2, the method for building up based on LSP among the NGN of MPLS-TE according to present embodiment comprises: step S202, NMS or OSS send the order of the lsp tunnel of creating multiprotocol label switching to the TRC-FE of resource accommodating control function, comprise in this order that service quality (QoS) requires (for example, bandwidth etc.); Step S204, TRC-FE receives and carries out path computing and Resource Allocation in Networks after the order (alternatively, at this moment, the path that calculating meets the demands, necessary words will discharge the lower LSP of some priority to obtain enough Internet resources), and the head node of the lsp tunnel created of notification command indication initiates the signaling of setting up of lsp tunnel, wherein, can obtain head node, one or more intermediate node and tail node by path computing; Step S206, head node will be set up signaling and be sent to tail node via one or more intermediate nodes, set up lsp tunnel between head node, one or more intermediate node and tail node; And step S208, after lsp tunnel was set up successfully, tail node was sent to head node with success response via one or more intermediate nodes.
In addition, after step S208, further comprise: steps A, head node is set up successfully to TRC-FE feedback lsp tunnel; And step B, TRC-FE sets up successfully to NMS or OSS feedback lsp tunnel.
Alternatively, after step B, further comprise: step C, NMS or OSS send the relevant information of the stream of the LSP that is mapped to lsp tunnel to TRC-FE; And step D, after TRC-FE received the relevant information of stream, the TRE-FE of notice head node generated the mapping table clauses and subclauses of stream and LSP, and successfully generated back notice TRE-FE in the mapping table clauses and subclauses, again by TRE-FE notice NMS or OSS;
Fig. 3 shows the signaling process of above-mentioned processing.As shown in Figure 3, comprise following processing:
Step 31, NMS or OSS initiatively issue the order of creating the MPLS lsp tunnel to the TRC-FE of RACF, inform corresponding qos requirement;
Step 32, TRC-FE receives that this orders laggard walking along the street directly to be calculated and Resource Allocation in Networks, calculate finish after, TRC-FE sends order to the TRE-FE of lsp tunnel head node, its lsp tunnel of initiating to transmit net of indication (explicit or loosely indication) is set up signaling;
Step 33, the TRE-FE of head node sets up signaling to the TRE-FE of subsequent node initiation LSP after receiving this order, and awaits a response; Set up when finishing whole lsp tunnel, after head node is received the success response of subsequent node, to TRC-FE feedback successful information;
Step 34, TRC-FE is again to NMS or OSS feedback successful information;
Step 35, NMS or OSS can continue to send to TRC-FE the relevant information of the stream that is mapped to this LSP;
Step 36, TRC-FE indicates the TRE-FE of LSP head node to generate corresponding stream-LSP mapping table clauses and subclauses after receiving these stream map informations again;
Step 37, TRE-FE generates stream-LSP mapping table clauses and subclauses accordingly according to the indication of TRC-FE, and the feedback success message;
Step 38, TRC-FE is again to NMS/OSS feedback success message.
Wherein, step 35 to step 38 is optional steps.
In addition, when removing lsp tunnel, can comprise that following processing: NMS or OSS send the order of removing lsp tunnel to TRC-FE; TRC-FE notice head node is initiated the dismounting signaling of lsp tunnel; Head node will be removed signaling and be sent to tail node via one or more intermediate nodes, remove lsp tunnel; After lsp tunnel is removed successfully, tail node will be removed success response and will be sent to head node via one or more intermediate nodes; Head node is removed successfully to the TRC-FE feedback; And TRC-FE removes successfully to NMS or OSS feedback.
Wherein, after NMS or OSS learn to remove successfully,, comprise further that then following processing: NMS or OSS send the mapping cancellation information of cancellation relevant information to TRC-FE if there is the relevant information of the stream that is mapped to LSP in the lsp tunnel; After TRC-FE receives mapping cancellation information, stream that indication TRE-FE deletion is corresponding with relevant information and the mapping table clauses and subclauses of LSP will be deleted under the deletion case of successful and successfully be notified TRC-FE, will be deleted by TRC-FE and successfully notify NMS or OSS.
Remove the signaling process of lsp tunnel shown in Fig. 4.As shown in Figure 4, specifically comprise following process:
Step 41, NMS or OSS initiatively issue the order of removing the MPLS lsp tunnel to the TRC-FE of RACF;
Step 42, TRC-FE receives that this order back sends order to the TRE-FE of this lsp tunnel head node, indicates its lsp tunnel of initiating the transmission net to remove signaling;
Step 43, the TRE-FE of head node receives this order back to subsequent node initiation LSP dismounting signaling, and awaits a response;
Step 44 when the dismounting of finishing whole lsp tunnel, after head node is received the success response of subsequent node, is fed back the information of successfully removing to TRC-FE;
Step 45, TRC-FE is again to NMS or OSS feedback successful information;
Step 46, NMS or OSS can continue to send the relevant information that cancellation is mapped to the stream of this LSP to TRC-FE;
Step 47, TRC-FE indicates the TRE-FE of LSP head node to delete corresponding stream-LSP mapping table clauses and subclauses after receiving these stream mapping cancellation information again.
Step 48, TRE-FE is according to the indication of TRC-FE, and deletion is stream-LSP mapping table clauses and subclauses accordingly, and the feedback success message;
Step 49, TRC-FE is again to NMS/OSS feedback success message.
Wherein, step 46 to step 49 is optional steps.
In addition, when adjusting lsp tunnel, comprise that further following processing: NMS or OSS send the order of adjustment lsp tunnel and new quality of service requirement to TRC-FE; The TRE-FE of TRC-FE notice head node initiates the adjustment signaling of lsp tunnel; Head node will be adjusted signaling and be sent to tail node via one or more intermediate nodes, adjust lsp tunnel; After lsp tunnel adjustment success, tail node will be adjusted success response and be sent to head node via one or more intermediate nodes; Head node is to the success of TRC-FE feedback adjusting; And TRC-FE is to NMS or the success of OSS feedback adjusting; Wherein, the mode to the adjustment of lsp tunnel comprises: expand and reduction.
And, when NMS or OSS learn adjust successfully after, if there is the relevant information of the stream that is mapped to LSP in the lsp tunnel, then further comprise following processing: NMS or OSS according to the mode of adjusting, send the order that indication increases new relevant information or cancels original relevant information to TRC-FE; And TRC-FE indication TRE-FE carries out respective handling.
At this moment, when NMS or OSS when TRC-FE sends indication and increases the order of new relevant information, TRE-FE generates stream corresponding with the relevant information that increases newly and the mapping table clauses and subclauses of LSP.
On the other hand, when NMS or OSS when TRC-FE sends the order of the original relevant information of indication cancellation, stream that the TRE-FE deletion is corresponding with original relevant information and the mapping table clauses and subclauses of LSP.
The signaling process of adjusting lsp tunnel has been shown among Fig. 5.As shown in Figure 5, specifically comprise following processing:
Step 51, NMS or OSS initiatively issue the order that the MPLSLSP tunnel is adjusted to the TRC-FE of RACF, inform new qos requirement, as bandwidth etc.;
Step 52 if TRC-FE receives that this order back order is to expand lsp tunnel, is then carried out path computing and Resource Allocation in Networks.After calculating was finished, TRC-FE sent order to the TRE-FE of lsp tunnel head node, indicated it to initiate to transmit the lsp tunnel of netting and adjusted signaling;
Step 53, the TRE-FE of head node receives this order back to subsequent node initiation LSP adjustment signaling, and awaits a response;
Step 54 is finished adjustment when finishing whole lsp tunnel, after head node is received the success response of subsequent node, to TRC-FE feedback successful information;
Step 55, TRC-FE is again to NMS or OSS feedback successful information;
Step 56, NMS or OSS can continue to send the relevant information that increase/cancellation is mapped to the stream of this LSP to TRC-FE;
Step 57, TRC-FE indicates the TRE-FE generation/deletion of LSP head node to flow accordingly-LSP mapping table clauses and subclauses after receiving these stream mapping increase/cancellation information again;
Step 58, TRE-FE is according to the indication of TRC-FE, and generation/deletion is flowed-LSP mapping table clauses and subclauses accordingly, and the feedback success message;
Step 59, TRC-FE is again to NMS/OSS feedback success message.
Wherein, step 56 to step 59 is optional steps.
In sum, by means of technical scheme of the present invention, filled up existing standard for based on the blank of how to carry out the definition that lsp tunnel creates a mechanism in the NGN network of MPLS-TE; Static MPLS lsp tunnel according to the present invention creates a mechanism and is very suitable for that Virtual network operator provides vpn service to the user in following NGN network, and is applicable to that carrier-supporting-carrier provides the scene of network bandwidth service to other Virtual network operators.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710151651.0A CN101127718B (en) | 2007-09-21 | 2007-09-21 | Method of Establishing LSP in NGN Based on MPLS-TE |
| PCT/CN2007/003677 WO2009036628A1 (en) | 2007-09-21 | 2007-12-19 | A method of establishing lsp in mpls-te-based ngn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710151651.0A CN101127718B (en) | 2007-09-21 | 2007-09-21 | Method of Establishing LSP in NGN Based on MPLS-TE |
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| CN101127718A true CN101127718A (en) | 2008-02-20 |
| CN101127718B CN101127718B (en) | 2011-11-23 |
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| CN200710151651.0A Expired - Fee Related CN101127718B (en) | 2007-09-21 | 2007-09-21 | Method of Establishing LSP in NGN Based on MPLS-TE |
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| WO (1) | WO2009036628A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062404A1 (en) * | 2007-11-12 | 2009-05-22 | Zte Corporation | A method for tunnel mapping |
| CN101232503B (en) * | 2008-02-22 | 2012-05-23 | 中兴通讯股份有限公司 | Resource allocation method and resource release method |
| CN102594645A (en) * | 2011-11-25 | 2012-07-18 | 中兴通讯股份有限公司 | Removing method of flow engineering tunnel in distributed network and node equipment |
| US9350650B2 (en) | 2011-03-14 | 2016-05-24 | Hangzhou H3C Technologies Co., Ltd. | Switching to a backup traffic path by a label switching router in a multi-protocol label switching network |
| CN107566274A (en) * | 2016-06-30 | 2018-01-09 | 丛林网络公司 | RSVP LSP and non-resource reservation protocol LSP Bandwidth Management |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984595B (en) * | 2010-11-03 | 2012-08-15 | 北京星网锐捷网络技术有限公司 | Method, system and device for building trans-regional flow engineering tunnel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030137971A1 (en) * | 2002-01-22 | 2003-07-24 | Mark Gibson | Telecommunications system and method |
| CN1254054C (en) * | 2002-12-26 | 2006-04-26 | 华为技术有限公司 | Method for constructing bidirectional lable swap path in optical network |
| EP1684471A1 (en) * | 2005-01-20 | 2006-07-26 | Matsushita Electric Industrial Co., Ltd. | Method, mobile host and router providing packet switched connection during handover |
| CN1941715B (en) * | 2005-09-30 | 2010-05-05 | 华为技术有限公司 | System, method and apparatus for controlling access network |
-
2007
- 2007-09-21 CN CN200710151651.0A patent/CN101127718B/en not_active Expired - Fee Related
- 2007-12-19 WO PCT/CN2007/003677 patent/WO2009036628A1/en active Application Filing
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062404A1 (en) * | 2007-11-12 | 2009-05-22 | Zte Corporation | A method for tunnel mapping |
| US8676948B2 (en) | 2007-11-12 | 2014-03-18 | Zte Corporation | Method for tunnel mapping |
| CN101232503B (en) * | 2008-02-22 | 2012-05-23 | 中兴通讯股份有限公司 | Resource allocation method and resource release method |
| US9350650B2 (en) | 2011-03-14 | 2016-05-24 | Hangzhou H3C Technologies Co., Ltd. | Switching to a backup traffic path by a label switching router in a multi-protocol label switching network |
| CN102594645A (en) * | 2011-11-25 | 2012-07-18 | 中兴通讯股份有限公司 | Removing method of flow engineering tunnel in distributed network and node equipment |
| CN102594645B (en) * | 2011-11-25 | 2017-12-01 | 中兴通讯股份有限公司 | The method for dismounting and node device of traffic engineering tunnel in distributed network |
| CN107566274A (en) * | 2016-06-30 | 2018-01-09 | 丛林网络公司 | RSVP LSP and non-resource reservation protocol LSP Bandwidth Management |
| CN107566274B (en) * | 2016-06-30 | 2020-08-28 | 丛林网络公司 | Method, router and controller for bandwidth management |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101127718B (en) | 2011-11-23 |
| WO2009036628A1 (en) | 2009-03-26 |
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