CN100413263C - Method for end-to-end data business establishment - Google Patents
Method for end-to-end data business establishment Download PDFInfo
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- CN100413263C CN100413263C CNB2006100618404A CN200610061840A CN100413263C CN 100413263 C CN100413263 C CN 100413263C CN B2006100618404 A CNB2006100618404 A CN B2006100618404A CN 200610061840 A CN200610061840 A CN 200610061840A CN 100413263 C CN100413263 C CN 100413263C
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Abstract
This invention provides one method of end to end data business, which comprises the following steps: according to data business type, selecting data businesses QoS service quality to service layer mapping strategy; according to selected mapping one to determine service layer path QoS degrees to fulfill data business matching service layer path for automatic establishing; finally through binding relative degree data business to relative degree service layer path to fulfill end to end data business establishing.
Description
Technical field
The present invention relates to the method for end-to-end data business establishment in a kind of communication system, it can provide data service path establishment end to end.
Background technology
How flourish along with data service provides high-quality data service to be subjected to extensive concern.SDH (synchronous digital hierarchy) is as the professional tranmission techniques of a kind of carrier-class, for the transmission of data service provides reliable guarantee, the particularly birth of ASON (ASON) technology, not only simplified the configuration management of SDH network greatly, the prior service that provides differentiation has better adapted to network development.
But; because the professional security mechanism of data business layer (client layer) itself is very limited; therefore need provide relevant protection mechanism in the transmission aspect (service layer) of data service, QoS ensures to provide end to end: for high-grade data service, use high level transmission channel transfer.
Generally, service layer and client layer business are planned respectively and are created.This will cause shortcoming and defect more cited below.
For example, in a kind of prior art, (be called for short " prior art one "), transmit demand (comprising bandwidth, protected mode etc.), set up the circuit of appropriate level in ASON service layer according to business.Create (virtual) private line service end to end in data plane then, manually select the business of service layer to connect.The advantage of this scheme is: transmit network and data business layer (being client layer in this article) network separately design and planning, and multi-zone supervision, more clear.
But such scheme exists following shortcoming, that is: (1) needs the artificial rank of determining service layer's network according to the severity level and the bandwidth requirement of data carried by data business.(2) efficiency of management is lower, connects when there are many service layers in sourcesink, needs manually to select service layer to connect, and makes mistakes easily, causes QoS of survice to can not get ensureing.
And for example, also use a kind of like this scheme (being called for short " existing scheme two ") in the prior art: at first finish the foundation of service layer's network circuit, when creating the connection of data Layer network, management system selects to satisfy service layer's connection of sourcesink restriction relation automatically in existing the connection.This automatic selection of service layer's route generally can be based on certain customers' constrained conditions set, and for example shortest path is protected priority scheduling.The characteristics of this scheme maximum are that he is from the subjective desire of user to the service layer path, the service layer path are claimed, and when business configuration, realize selection to service path by management system or other assemblies.
Though this scheme has solved the problem that manual assignment service layer connects.But there is following shortcoming in this scheme:
(1) selects and finish circuit creation automatically, just solved the problem of the professional accessibility of service layer,, may cause professional packet loss, influence service quality when service layer's bandwidth deficiency.
(2) can't support the service layer of differentiation to select according to data service QoS credit rating.
Summary of the invention
The objective of the invention is to propose a kind of method of end-to-end data business establishment, it can realize the service layer's path QoS grade that adapts with data service QoS grade when creating automatically and selecting data service service layer path.
For realizing above-mentioned goal of the invention, the method for end-to-end data business establishment provided by the invention comprises the steps: A, according to the data service type, selects the mapping policy of data service QoS service quality to the QoS of service layer service quality; B, by selected mapping policy, determine the QoS rank in service layer path; C, according to service layer's path QoS rank, carry out the service layer route and calculate; D, create and the corresponding end-to-end service layer of described service layer's path QoS rank path, thereby data service QoS rank and service layer path are complementary, and finish the automatic establishment of end-to-end data business according to result of calculation.
Preferably,
Comprise before the steps A: specify and/or selection by the user, the information that management system receives comprises: the route restriction information of the sourcesink information of the type of data service, business, bandwidth information, business.
Step B further comprises: when determining the QoS rank in service layer path, also obtain according to described bandwidth information.
The user comprises the appointment of described route restriction information: service path must through and/or must without node and/or link and/or time slot.
Step C further comprises: when carrying out service layer's route calculating, also according to comprising described route restriction information and carrying out in conjunction with network resource information.
Also comprise before the steps A: the user preset or the described data service QoS of custom-modification service quality to the mapping policy of the QoS of service layer service quality.
Step D specifically comprises: according to the relation that data service QoS rank and service layer path are complementary, when service creation the service layer path of data service and corresponding level is bound.
The network type of described service layer correspondence comprises: ASON ASON, SDH (Synchronous Digital Hierarchy) SDH network, synchronous optical network SONET, wave division multiplexing WDM network.
The corresponding A SON of service layer network, the control plane by ASON carry out service layer's route and calculate.
Perhaps, corresponding other network except that the ASON network of service layer carries out service layer's route by management system and calculates.
The invention has the beneficial effects as follows: it has made full use of service layer's network or the automatic service establishment characteristic of management system and the bandwidth service characteristics of differentiation such as ASON, by of the mapping of data service service quality to service layer's service quality, make it when creating automatically and selecting data service service layer path, to realize the service layer's path QoS grade that adapts with data service QoS grade.
Concrete feature of the present invention will become clearer in the concrete implementation from behind.
Description of drawings
Fig. 1 is the flow chart of data business establishment end to end of the embodiment of the invention.
Embodiment
Describe the method for end-to-end data business establishment of the present invention in detail below in conjunction with accompanying drawing.In the following embodiments, will with ASON example.
In order to realize creating automatically and select data service service layer path, need to customize a kind of mapping mechanism in this example from the data service service quality QoS to ASON service layer service quality QoS.
We know that on the one hand, the QoS mode classification of data service has multiple, and every kind of mode classification identifies different QoS requirements with different field values.These mode classifications comprise: VLAN PRI (Virtual LAN Priority VLAN priority) field, MPLS EXP (Multiprotocol Label Switching Experimental Use multiprotocol label switching experiment is used) field, IP TOS (Internet Protocol Type of Service the Internet protocol traffic type) field, IP DSCP (Differentiated Services Code Point differential service code value) field etc.
Wherein, VLAN PRI Field Definition the precedence field of 3bit, value 0～7 has identified the grade of service respectively from low to high.MPLS EXP Field Definition the EXP field of 3bit, value 0～7 has identified the grade of service respectively from low to high.IP TOS field is made up of 4bit, has defined typical 5 kinds of values and has identified different QoS requirements.The IP dscp field is made up of 6bit, is used for determining the service quality of difference.Certainly the user also can define the quality of service mode classification neatly, for example according to port-mark, VLAN value or MPLS label value etc., like this by mode classification definition flexibly, finishes the differentiation classification of Business Stream.Owing to there are these miscellaneous mode classifications, and every kind of mode classification identifies different QoS requirements with different field values, thereby causes in the previously described prior art assurance problem about data service QoS service quality rating in the service layer path.
On the other hand, the ASON network then provides multiple business rank (being the QoS rank), and for example, can comprise: 1+1,1:1, prefabricated heavy-route, heavy-route, unprotect, unprotect can be seized or the like.Prior art can't come differentiation ground to select the QoS rank in service layer path according to the QoS credit rating of data service.
Among the present invention,, determine the construction strategy of ASON service layer network by on management system, presetting of the mapping of QoS service quality rating to the ASON business-level.Custom-modification is supported in this mapping.
According to a preferred version, the mapping relations that can followingly dispose the QoS service quality rating: the 1+1 of the value 7 corresponding A SON of VLAN PRI or MPLS EXP to the ASON business-level, the 1:1 that is worth 6 corresponding A SON, the prefabricated heavy-route that is worth 5 corresponding A SON, the heavy-route that is worth 4 corresponding A SON, the unprotect of value 3～1 corresponding A SON, the unprotect that is worth 0 corresponding A SON can be seized etc.; 5 kinds of ranks of 5 kinds of typical value corresponding A SON of IPTOS: the 1+1 of VLAN ID1～1024 corresponding A SON, 1:1 of VLAN ID 2048～3000 corresponding A SON or the like.
Typically can following configuration as shown in the table:
| The ASON grade of service | MPLS EXP | IPTOS | | VLANPRI | |
| 1+1 | 7 | 8 | 1-1024 | 7 | |
| 1:1 | 6 | 4 | 1025-2047 | 6 | |
| Preset heavy-route | 5 | 2 | 2048-3000 | 5 | |
| Heavy-route | 4 | 1 | 3001-3500 | 4 | |
| Unprotect | 1-3 | 0 | 3501-3700 | 1-3 | |
| Unprotect can be seized | 0 | Other | Other | 0 | |
| Other | N/A | N/A | N/A | N/A |
Four kinds of different mapping policys have been listed in the table.The user can customize other mapping policy as required.
The user preset or the described data service QoS of custom-modification service quality behind the mapping policy of the QoS of service layer service quality, just can carry out professional the connection automatically of the ASON of data service service layer and create.Fig. 1 has illustrated the end-to-end set-up mechanism of the data service among the present invention.
1, at first, the user carries out the P 2 P service establishing operation according to business demand on management system.Specify and/or select professional type, sourcesink and bandwidth information.Attention: " existing scheme two " mentioned above also has this step, but need not specified services bandwidth (only needing to specify sourcesink).Even specified bandwidth, also be to be used for itself making flow restriction, rather than service layer's bandwidth is carried out requirement data are professional.
2, next, the user is according to actual requirement, the route restriction of specified services.Specifically, the user can be according to the service needed of reality, select specified path must through and/or must without node and/or link and/or time slot.Certainly the user can not specify route restriction yet and automatically selects the path by management system fully.This step is identical with existing scheme two.
So 3, management system is selected the mapping policy (this strategy is exactly a represented strategy in the top form) of acquiescence according to the data service type.For the VLAN business, perhaps the MPLS business is selected corresponding strategy (for example, professional corresponding VLAN ID of VLAN or VLAN PRI, professional corresponding MPLS EXP of MPLS or the like) respectively; For IP operation, can select IP TOS and IPDSCP strategy.In addition, system supports user's modification or adjusts the selected strategy of acquiescence.(index of strategy is a mode classification, and according to the mode classification of business, which bar corresponding strategy and concrete tactful content are adopted in decision.Referring to top form, for example adopt the IPTOS mode classification, satisfy certain value of this mode classification when data service, just correspond in the service network of appropriate level.)
4, then, management system is according to selected mapping policy and bandwidth information, determines the relevant configuration information such as (QoS) rank, protection, service layer's configuration, routing iinformation of ASON service path.(the rank has here comprised protection, service layer's configuration, contents such as routing iinformation.Protection, service layer's configuration and routing iinformation are separate notions.Service layer's configuration refers to remove protection and these two of routing iinformations best embody other outer configuration informations of other content of level, comprises band width configuration, and port arrangement, business configuration etc. are used for the configuration that the supporting path is set up.)
Specifically; in this step; management system is searched the QoS service quality rating that presets according to selected mapping policy and is arrived ASON business-level mapping table; determine the rank of ASON service path; thereby know protection and routing iinformation; and, determine related service layer configuration information (comprising port arrangement, band width configuration etc.) in conjunction with bandwidth information.For example, client's business is that (the VLAN ID scope of supposing client's business is 1-100 to VLAN, bandwidth demand is 1000M) business, the user selects mapping policy to shine upon according to VLAN ID, by searching mapping table (with reference to subordinate list in the literary composition), the 1+1 of the VLAN scope corresponding A SON grade of service of client's business, system knows that according to this information service layer's needs provide the 1+1 level other path, therefore need provide the SNCP protection of 1+1 and assurance work to separate with the protection route; In conjunction with bandwidth information, draw the Virtual Concatenation bandwidth that service layer need provide 8 * VC4.
5, then, (the control plane here is exactly the control plane of ASON, is used to finish route and calculates and resource allocation to issue control plane.A part that belongs to the ASON ergasia), control plane carries out service layer's route and calculates according to entry condition (route restriction, the sourcesink that comprise the business of user's appointment) and in conjunction with network resource information (comprising idling-resource, for example time slot, port etc.).(for non-ASON service layer network, also can be calculated and be finished service layer's path assignment of appropriate level by management system, promptly dotted portion is indicated among the figure)
Specifically, in this step, management system is with the class information of ASON network, bandwidth information and service layer's sourcesink information issue the ASON control plane, the ASON control plane is according to these constraintss and in conjunction with the current resource information of network (idling-resource, time slot for example, port), (how calculating by concrete ASON implementation algorithm or the decision of management system routing algorithm, is not that this patent is concerned about to carry out service layer's route calculating.This patent only is concerned about the constraint/entry condition that draws calculating of ASON route or management system route calculating needs according to the client layer business.For example bandwidth is protected route restriction).
For non-ASON service layer network, also can finish service layer's route and calculate, be i.e. dotted portion among the figure by management system.
So 6, return result of calculation and require the user to confirm (result who returns comprises QoS rank, routing iinformation, protection information etc.), and allow the user that result of calculation is adjusted, to satisfy user's needs better.But need to prove that this adjustment can not influence the service quality rating in path.
7, after the user confirms or after user's adjustment, (" equipment " is exactly the network equipment herein, is exactly the physical entity that really provides professional to issue equipment.Above all working be exactly for configuration on such equipment professional end to end) and the end-to-end ASON path of creating appropriate level.Every kind of strategy has multiple rank, but the data service of input may just in time only be mapped to a kind of rank, is exactly to create a service path like this, otherwise just needs to create many.For example, client's business of input is VLAN ID1-100, if mapping policy is defined as 1-50 mapping 1+1,51-100 shines upon 1:1, in order to finish the transmission of data service, needs to create the service layer path of two different stages like this.
For non-ASON service layer network, directly finish the path of appropriate level by management system and create.(the management system realizing route is created two kinds of methods, and a kind of is by ASON, uses the ASON technology to finish end-to-end path and creates, and at this time management system only provides relevant information and tactful in input; Another kind is directly to realize route calculating by management system, and the algorithm that resource allocation is relevant so also can be finished identical work.This difference of two kinds depends on whether equipment supports this technology of ASON.)
In other words, in this step, the routing iinformation that the ASON control plane will finally be confirmed is handed down to the interconnection that a plurality of physical equipments are created appropriate level, (it is irrelevant with concrete service layer type that the result of calculation equipment that issues is created end-to-end path to form end-to-end service layer path, issue by control plane for ASON, for general network, issue by management plane.How to create as for equipment, comprised management system logical calculated and verification, issue driving, driving and writing chip etc. is not the content that this patent is concerned about).(, routing iinformation directly being handed down to physical equipment) by management system for non-ASON service layer network
8, last, management system is finished the binding of appropriate level data service to the service layer path according to mapping policy.The back is finished in binding just can be in the transmission of the enterprising line data business in path of binding.
This step is that management system is finished the binding of data service to the service layer path.The mapping policy of selecting when this service layer path of binding meets data business establishment.This step has had nothing to do with the ASON function.
Brief overview is once: in the 4th step, we according to mapping table with the data service level map to service layer's rank, finished the service layer path of appropriate level then and created, at this time need data service is tied on the service layer path of satisfying mapping table.For example, the 4th step was determined to use other service layer path of 1+1 level according to data service, and 4-7 finishes this service layer path and creates, and the 8th goes on foot data binding to the service layer path of creating.
Because service layer is fully according to the level creation of client layer, therefore need be triggering client layer business-binding that this service layer creates to this service layer.For example VLAN ID1-100 triggers and has created other service layer path of 1+1 level, and the business of 1-100 will be tied on other this service layer path of 1+1 level so.
By last description as seen, the present invention is according to type of service, determines to adopt which kind of mapping policy, and according to the QoS grade of mapping policy, finishes the service layer path and create, at last again client's business-binding to corresponding service layer path.Sourcesink among the step 1-2 is essential, is consistent with aforementioned traditional scheme.Type of service is to adopt what kind of strategy for more appropriate differentiation.For example, the MPLS business can not be used the strategy of VLAN certainly, and according to this type that the user selectes, management system just can select to have used which kind of strategy.Certainly be the VLAN business equally, may have VLAN ID strategy and VLAN PRI strategy, this can select acquiescence which uses by system oneself, allows user's modification.
It is emphasized that, the establishment in ASON path is based on that the service quality rating of client's business carries out, for example the VLAN ID that comes of client is 100 business, adopt VLAN ID to identify as strategy, according to the search strategy form, know that 100 is other ASON service paths of requirement 1+1 level, then according to bandwidth information, know and to set up great service layer bandwidth that the foundation in service layer path is set up according to these client layer information.
Adopt and of the present inventionly determine the method for service layer's path QoS grade, can bring following beneficial effect by the data service service quality rating:
(1) by the mapping relations of customization data QoS grade to ASON transmission network-level, can be according to the requirement of client to QoS and grade, the business of automatic route appropriate level is to the service layer path that meets quality of service requirement, thereby the end-to-end quality of service of realizing the customer data business guarantees.Avoided because service layer's path assignment mistake causes the reduction of QoS, also alleviated traditional work greatly at different brackets professional craft carrying out service layer's path assignment.
(2) because the traffic classification mode of data service own is numerous, the present invention does not limit QoS tier definition mode, the user fully can be according to oneself requirement, the service quality of business is adjusted flexibly and defined, can be applied to various scenes very easily like this, reduce requirement the user.
(3) by the mapping of business service grade provided by the invention to service layer's path-level, management system or control plane or equipment management system software can be finished the establishment and the selection in service layer path fully automatically, with respect to tradition configuration service layer path at first, create client's service path again, and the process of manually selecting, greatly improve O﹠M efficient, reduced O﹠M cost.
Though the above-mentioned explanation to the specific embodiment of the present invention is that bearing data service designs and realizes in based on the ASON network of SDH, but those skilled in the art will be applied to this principle in other networks such as wavelength-division, SONET at an easy rate, though because automatic service is created characteristic is that the ASON network is distinctive, but can finish the function that automatic service is created by management system for legacy network, so just general network can be used for, and the differentiated service characteristic has all in SDH, sonet network.
In fact, create characteristic automatically and can realize that such function reduces the requirement to service layer's network by management system.And for differentiation; networks such as wavelength-division, SDH, SONET also can provide; but need management system to be abstracted into multiple rank; be convenient to user's practical application; for example the SDH network can provide 1+1 protection; by on management system, taking out the service quality of a 1+1 grade, 1+1 protection is separated strategy with work protection route merge, get final product in this patent as the 1+1 level applications.Therefore this patent is realized not limiting in fact to service layer's network.
Claims (10)
1. the method for an end-to-end data business establishment is characterized in that, comprises the steps:
A, according to the data service type, select the mapping policy of data service QoS service quality to the QoS of service layer service quality;
B, by selected mapping policy, determine the QoS rank in service layer path;
C, according to service layer's path QoS rank, carry out the service layer route and calculate;
D, create and the corresponding end-to-end service layer of described service layer's path QoS rank path, thereby data service QoS rank and service layer path are complementary, and finish the automatic establishment of end-to-end data business according to result of calculation.
2. the method for end-to-end data business establishment as claimed in claim 1, it is characterized in that, comprise before the steps A: specify and/or selection by the user, the information that management system receives comprises: the route restriction information of the sourcesink information of the type of data service, business, bandwidth information, business.
3. the method for end-to-end data business establishment as claimed in claim 2 is characterized in that, step B further comprises: when determining the QoS rank in service layer path, also obtain according to described bandwidth information.
4. the method for end-to-end data business establishment as claimed in claim 2 is characterized in that, the user comprises the appointment of described route restriction information: service path must through and/or must without node and/or link and/or time slot.
5. the method for end-to-end data business establishment as claimed in claim 2 is characterized in that, step C further comprises: when carrying out service layer's route calculating, also according to comprising described route restriction information and carrying out in conjunction with network resource information.
6. the method for end-to-end data business establishment as claimed in claim 1 is characterized in that, also comprises before the steps A: the user preset or the described data service QoS of custom-modification service quality to the mapping policy of the QoS of service layer service quality.
7. the method for end-to-end data business establishment as claimed in claim 1, it is characterized in that, step D specifically comprises: according to the relation that data service QoS rank and service layer path are complementary, when service creation the service layer path of data service and corresponding level is bound.
8. as the method for claim 1,2,6 or 7 described end-to-end data business establishments, it is characterized in that the network type of described service layer correspondence comprises: ASON ASON, SDH (Synchronous Digital Hierarchy) SDH network, synchronous optical network SONET, wave division multiplexing WDM network.
9. the method for end-to-end data business establishment as claimed in claim 8 is characterized in that, the corresponding A SON of service layer network, the control plane by ASON carry out service layer's route and calculate.
10. the method for end-to-end data business establishment as claimed in claim 8 is characterized in that, corresponding other network except that the ASON network of service layer carries out service layer's route by management system and calculates.
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| CN101848052B (en) * | 2009-03-27 | 2014-08-20 | 中国电信股份有限公司 | Service mapping configuration method and system of multi-domain network |
| CN102238439B (en) * | 2010-04-30 | 2014-12-10 | 中兴通讯股份有限公司 | Control method and system of business mapping process based on G.709 |
| CN104812085A (en) * | 2014-01-24 | 2015-07-29 | 中兴通讯股份有限公司 | Service creating method and apparatus, and network element device |
| CN109391562B (en) * | 2017-08-10 | 2022-04-05 | 东软集团股份有限公司 | Priority scheduling method and device and firewall |
| CN110719185B (en) * | 2018-07-13 | 2022-03-01 | 中兴通讯股份有限公司 | Network slice control method and device and computer readable storage medium |
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| CN1585403A (en) * | 2004-05-27 | 2005-02-23 | 上海交通大学 | Service quality controlling method for light Internet network |
| CN1601977A (en) * | 2003-09-27 | 2005-03-30 | 华为技术有限公司 | Selecting route method based on strategy |
| WO2005029751A2 (en) * | 2003-09-16 | 2005-03-31 | Nexthop Technologies, Inc. | Systems and methods to support quality of service in communications networks |
| CN1750516A (en) * | 2005-11-07 | 2006-03-22 | 中兴通讯股份有限公司 | Method for realizing end-to-end QoS route based on local QoS catagory |
| CN1798054A (en) * | 2004-12-21 | 2006-07-05 | 华为技术有限公司 | Optical network management system and method for implementing services from end-to-end |
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| WO2005029751A2 (en) * | 2003-09-16 | 2005-03-31 | Nexthop Technologies, Inc. | Systems and methods to support quality of service in communications networks |
| CN1601977A (en) * | 2003-09-27 | 2005-03-30 | 华为技术有限公司 | Selecting route method based on strategy |
| CN1585403A (en) * | 2004-05-27 | 2005-02-23 | 上海交通大学 | Service quality controlling method for light Internet network |
| CN1798054A (en) * | 2004-12-21 | 2006-07-05 | 华为技术有限公司 | Optical network management system and method for implementing services from end-to-end |
| CN1750516A (en) * | 2005-11-07 | 2006-03-22 | 中兴通讯股份有限公司 | Method for realizing end-to-end QoS route based on local QoS catagory |
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