CN101163098A - Method of implementing service data flow and label switching path tunnel mapping - Google Patents
Method of implementing service data flow and label switching path tunnel mapping Download PDFInfo
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- CN101163098A CN101163098A CNA2007101247158A CN200710124715A CN101163098A CN 101163098 A CN101163098 A CN 101163098A CN A2007101247158 A CNA2007101247158 A CN A2007101247158A CN 200710124715 A CN200710124715 A CN 200710124715A CN 101163098 A CN101163098 A CN 101163098A
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Abstract
The invention discloses a method for realizing the mapping of service data flow and label switching path tunnel, which is used in a next generation network field. The method comprises the step as follows: the resource of the service data flow is distributed by a TRC-FE according to the resource information of a MPLS LSP, and a PE-FE updating flow label mapping table and other information are announced by the TRC-FE through an Rc interface; the update of a FTN table is finished by the PE-FE, and the service data flow is mapped to a named LSP tunnel. With the Rc interface and the TRC-FE announcing the PE-FE the information of mapping the data flow to the named LSP tunnel, the invention realizes the mapping between the service data flow and the MPLS LSP tunnel. So the problem that in the prior standard the service data flow of NGN network which based on MPLS-TE and the mapping of LSP tunnel resource is incapable of being realized is solved.
Description
Technical field
The present invention relates to the next generation network field, relate in particular to a kind of method that realizes business data flow and label switched path tunnel mapping.
Background technology
At present ITU-NGN (International Telecommunication Union NextGeneration Network, International Telecommunications Union-next generation network) resource allocation and controlled function subsystem-RACF (Resource Admission Control Function, resource accommodating control function) definition (Y.RACF-Y.2111 standard) and based on MPLS-TE (Multi-Protocol Label SwitchTraffic Engineering, multiprotocol label switching-traffic engineering) in the definition of RACF (Y.MPLS-RACF standard), all be not specifically defined detailed MPLS-LSP (LabelSwitch Path, label switched path) how tunnel and business data flow finish mapping, thereby realize the method to the business assurance of business data flow.
As shown in Figure 1, the ITU-T NGN RACF frame diagram of prior art, comprise TRE-FE (Transport Resource Enforcement Function Entity, transmission resource execution functional unit), PE-FE (Policy Enforcement Function Entity, the policy enforcement function unit), TRC-FE (Transport Resource Control Function Entiy, the transmission resource control function units), PD-FE (Policy Decision Function Entity, strategy decisive function unit) and RACF.
In the accompanying drawing 1, 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 Rw interface is responsible for strategy decisive function unit PD-FE and transport layer policy enforcement function unit (PE-FE) issues corresponding strategy, as ductility limit speed, flow label, gateway function, 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 etc.
Yet, be not specifically defined at present the correlation function of Rn interface among the ITU-T NGN, also be not specifically defined detailed MPLS lsp tunnel and business data flow and how finish mapping, thereby and realize the method that the business to business data flow guarantees.
Therefore, prior art awaits improving and development.
Summary of the invention
The object of the present invention is to provide a kind of method that realizes business data flow and label switched path tunnel mapping, this method can realize that in based on the NGN network of MPLS-TE business data flow is mapped on the MPLS lsp tunnel, has solved existing standard to this blank on the one hand.
In order to solve above-mentioned purpose, the inventive method adopts following technical scheme:
A, transmit the resource information of resource control function units, finish resource allocation, and inform that by the Rc interface policy enforcement function unit upgrades stream label mapping table and other information business data flow according to multiprotocol label switching-label switched path;
The renewal of described stream label mapping table is finished in B, described policy enforcement function unit, and described business data flow is mapped to the label switched path tunnel of appointment.
Described method wherein, comprises in the described steps A:
A1, strategy decisive function unit or other unit send the resource information request of business data flow to described transmission resource control function units; Described other unit comprises that transmitting resource carries out functional unit, policy enforcement function unit;
A2, described transmission resource control function units are selected corresponding label switched path tunnel, and are finished the distribution of described business data flow according to the resource information request that receives.
Described method, wherein, in the described steps A, described out of Memory comprises business data flow IP five elements and the label switched path tunnel that is assigned to.
Described method wherein, comprises among the described step B:
After the renewal of described stream label mapping table is finished in described policy enforcement function unit, create the map entry of a described business data flow and label switched path tunnel.
Described method wherein, also comprises after the described step B:
C, after described business data flow is ended, cancel the mapping of described business data flow and label switched path tunnel.
Described method wherein, comprises among the described step C:
C1, strategy decisive function unit or other unit send suspension of service message to described transmission resource control function units; Described other unit comprises that transmitting resource carries out functional unit, policy enforcement function unit;
C2, described transmission resource control function units be according to described abort message, the label switched path that finds this business data flow to be assigned to;
C3, by the Rc interface, notify described policy enforcement function unit to cancel the mapping that this business datum flows to this label switched path;
After this cancellation map information is received in C4, described policy enforcement function unit, upgrade the stream label mapping table, and delete the map entry of this business data flow and label switched path tunnel.
The present invention is by the Rc interface, TRC-FE informs that the PE-FE that is positioned at the LSP head node is mapped to data flow the information of specifying lsp tunnel, realize the mapping between business data flow and the MPLS lsp tunnel, thereby solved the business data flow and the lsp tunnel resource mapping that can't realize in the existing standard, finished the blank that the bearer network resource allocation is implemented based on the NGN network of MPLS-TE.
Description of drawings
Fig. 1 is the RACF Organization Chart of ITU-T NGN in the prior art
Fig. 2 is the business data flow of the inventive method and the block diagram of MPLS lsp tunnel mapping;
Fig. 3 is the realization flow figure of the inventive method.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in further detail.
Design principle of the present invention: utilize (the TransportResource Enforcement Function Entity of the TRC-FE in the RACF subsystem among the NGN, transmit resource control function units), PE-FE (Policy Enforcement Function Entity, the policy enforcement function unit), and between the Rc interface, realize the mapping in business data flow and MPLS-LSP tunnel.
Shown in Fig. 2 and 3, the invention provides a kind of method that realizes business data flow and label switched path tunnel mapping, its realization flow comprises the steps:
110, PD-FE (strategy decisive function unit) or other unit send the resource information request of business data flow to TRC-FE; Wherein, described other unit comprises that transmitting resource carries out functional unit, policy enforcement function unit;
120, TRC-FE selects corresponding lsp tunnel, and finishes the distribution of described business data flow according to the resource information request that receives;
130, after the resource allocation of business datum is finished, inform that by the Rc interface PE-FE of this lsp tunnel head node is mapped to this LSP with this business data flow, and inform corresponding other information, as business data flow IP five-tuple, the lsp tunnel that is assigned to etc.;
140, after LSP head node PE-FE receives above-mentioned map information, upgrade FTN table (Forwarding Equivalence Class to Next Hop Label Forwarding Entry, forwarding equivalence class is jumped the label forwarding map entry to next), it is the stream label mapping table, create the map entry of this business data flow and lsp tunnel, and when business data flow arrived this head node, PE-FE was mapped to this LSP with this business data flow;
150, after business data flow is ended, PD-FE or other unit will send suspension of service message to TRC-FE; Wherein, described other unit comprises that transmitting resource carries out functional unit, policy enforcement function unit;
160, TRC-FE is according to described abort message, the LSP that finds this business data flow to be assigned to;
170, by the Rc interface, notify the PE-FE of this LSP head node, cancel the mapping that this business datum flows to this LSP, and inform corresponding other information, as business data flow IP five-tuple, the lsp tunnel that is assigned to etc.;
180, after the PE-FE of LSP head node receives this cancellation map information, upgrade the FTN table, delete the map entry of this business data flow and lsp tunnel, return to original business datum stream mode.
In sum, the inventive method mainly is by the Rc interface, TRC-FE informs that the PE-FE that is positioned at the LSP head node is mapped to data flow the information of the lsp tunnel of its distribution, realize the mapping between business data flow and the MPLS lsp tunnel, thereby solved the business data flow and the lsp tunnel resource mapping that can't realize in the existing standard, finished the blank that the bearer network resource allocation is implemented based on the NGN network of MPLS-TE; Simultaneously, specifically define the correlation function that still is in Rc interface to be defined at present.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (6)
1. a method that realizes business data flow and label switched path tunnel mapping is applied to the next generation network field, and this method comprises the steps:
A, transmit the resource information of resource control function units, finish resource allocation, and inform that by the Rc interface policy enforcement function unit upgrades stream label mapping table and other information business data flow according to multiprotocol label switching-label switched path;
The renewal of described stream label mapping table is finished in B, described policy enforcement function unit, and described business data flow is mapped to the label switched path tunnel of appointment.
2. method according to claim 1 is characterized in that, comprises in the described steps A:
A1, strategy decisive function unit or other unit send the resource information request of business data flow to described transmission resource control function units; Described other unit comprises that transmitting resource carries out functional unit, policy enforcement function unit;
A2, described transmission resource control function units are selected corresponding label switched path tunnel, and are finished the distribution of described business data flow according to the resource information request that receives.
3. method according to claim 1 and 2 is characterized in that, in the described steps A, described out of Memory comprises business data flow IP five elements and the label switched path tunnel that is assigned to.
4. method according to claim 1 is characterized in that, comprises among the described step B:
After the renewal of described stream label mapping table is finished in described policy enforcement function unit, create the map entry of a described business data flow and label switched path tunnel.
5. method according to claim 1 is characterized in that, also comprises after the described step B:
C, after described business data flow is ended, cancel the mapping of described business data flow and label switched path tunnel.
6. method according to claim 5 is characterized in that, comprises among the described step C:
C1, strategy decisive function unit or other unit send suspension of service message to described transmission resource control function units; Described other unit comprises that transmitting resource carries out functional unit, policy enforcement function unit;
C2, described transmission resource control function units be according to described abort message, the label switched path that finds this business data flow to be assigned to;
C3, by the Rc interface, notify described policy enforcement function unit to cancel the mapping that this business datum flows to this label switched path;
After this cancellation map information is received in C4, described policy enforcement function unit, upgrade the stream label mapping table, and delete the map entry of this business data flow and label switched path tunnel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101247158A CN101163098B (en) | 2007-11-13 | 2007-11-13 | Method of implementing service data flow and label switching path tunnel mapping |
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| CN2007101247158A CN101163098B (en) | 2007-11-13 | 2007-11-13 | Method of implementing service data flow and label switching path tunnel mapping |
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| CN101163098A true CN101163098A (en) | 2008-04-16 |
| CN101163098B CN101163098B (en) | 2011-10-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062404A1 (en) * | 2007-11-12 | 2009-05-22 | Zte Corporation | A method for tunnel mapping |
| WO2015149623A1 (en) * | 2014-04-04 | 2015-10-08 | 华为技术有限公司 | Service tunnel establishment method and device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411398C (en) * | 2005-06-13 | 2008-08-13 | 华为技术有限公司 | Edge or packet gateway controlling method in next generation network and its system |
| CN100426805C (en) * | 2005-06-14 | 2008-10-15 | 华为技术有限公司 | Edge or packet gateway control system in next generation network and its method |
| CN100438515C (en) * | 2005-06-14 | 2008-11-26 | 华为技术有限公司 | Edge or packet gateway controlling method in next generation network and its system |
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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 |
| US8676948B2 (en) | 2007-11-12 | 2014-03-18 | Zte Corporation | Method for tunnel mapping |
| WO2015149623A1 (en) * | 2014-04-04 | 2015-10-08 | 华为技术有限公司 | Service tunnel establishment method and device |
| CN104980362A (en) * | 2014-04-04 | 2015-10-14 | 华为技术有限公司 | Business tunnel establishment method and business tunnel establishment device |
| CN104980362B (en) * | 2014-04-04 | 2019-04-12 | 华为技术有限公司 | A kind of service tunnel method for building up and equipment |
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| CN101163098B (en) | 2011-10-26 |
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