CN101459610B - Routing apparatus and method oriented to multi-layer multi-domain distributed optical network - Google Patents
Routing apparatus and method oriented to multi-layer multi-domain distributed optical network Download PDFInfo
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- H04L45/00—Routing or path finding of packets in data switching networks
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The invention discloses a routing device and a method facing to multi-layer multi-domain distributed optical network, wherein the device is added with a whole domain service data base and two units of an intra-area service data base on the basis of a traditional routing module, and adopts a topological abstract method merging with service information, and achieves the implementation of a service-oriented architecture under multi-layer multi-domain distributed optical network. The service-oriented routing algorithm adopted by the invention is better than a traditional aim direction algorithm, and can improve the success ratio of service and the utilization ratio of resources. The invention utilizes local optimization of inter-domain routing to replace the global optimization of whole domain routing, optimizes the routing algorithm, and reduces the complexity of routing algorithm. The invention adopts a distributed routing algorithm and a parallel signaling, can greatly reduce routing establishment time, and improves the usability of network. The invention is applied in distributed optical network.
Description
Technical field
The present invention relates to a kind of route device and method of oriented multilayer multiple domain distributed optical network, belong to the distributed optical network technical field.
Background technology
Along with the existence of extensive resource-sharing business, more and more higher for the requirement of bandwidth and network flexibility such as long-range parallel, high bandwidth extensive, real time business with distributed treatment, long-range high sharpness video service etc.Network between the different suppliers needs mutual amount of information increasing, the mutual requirement that can not fully satisfy above-mentioned business of basic reachability information.Along with service-oriented architecture (Service-Oriented Architecture, SOA) come into one's own day by day, optical-fiber network is fused in this architecture, seek to solve interconnecting and the method for resource management flexibly and scheduling between the multi-layer multi-domain optical network, will be to the solution generation material impact of the architecture and the key issue of distributed optical network.
IETF, OIF and ITU-T etc. organize and carry out standardized extensions with regard to the content of cross-domain route and data communication aspect.Therefore there is multiple mode in a plurality of suppliers for the operation and management of network, and the network of an operator inside also is divided into a plurality of territories, and it will be more complicated crossing between a plurality of suppliers in a plurality of territories the interconnected cross-domain problem of facing of distributed optical network.Current networking and the research of the cross-domain route achievement in research that do not obtain maturity as yet for distributed optical network, Standardization System also needs further perfect.
Along with further developing of optical-fiber network, multiple exchanging form, administrative mechanism and the professional coexistence of variation, more information need be carried out between distributed network and a plurality of different management domain alternately, therefore the combined dispatching between networking between the territory, signaling and route and the heterogeneous resource must solve with problem such as shared, and obtains standardization.What distributed reconfigurable optical network was realized is with the Internet resources objectification, and the process of large-scale distributed voice and packet data concurrent service and scheduling of resource is provided, and emphasis solves scheduling of resource and distribution; Distributed optical network is then expanded in the supply of multi-layer multi-domain Internet resources, supports for network resource scheduling widely provides network.
Network has in the service for the user and other resource equity status, and resource has different structure and mark sheet reveals the isomery characteristic, but then has unified scheduling and management interface offers the upper strata by unified abstract model.By to the heterogeneous resource Study on Management, set up complete resource organizations, visit, management and the reserved resource administrative mechanism of a cover, realize efficient seamless application and the management of Internet resources service system.
The route research under the multi-layer multi-domain network at present, focus mostly on ASON (Automatically Switched Optical Network, under network frame ASON), and great majority are focus control mode; Because ASON adopts the legacy network hierarchy, and does not meet the characteristics of present service-oriented network configuration, produced compatibility issue, need the new route device of research to address these problems.Route device has the requirement of two levels: on the one hand, by using designed device, can realize the basic intercommunication requirement of network, promptly can set up basic reached at link for business by the network route device, this belongs to the intercommunication level; On the other hand, by optimizing routing algorithm and signaling process mechanism, realize the efficient intercommunication of network, improve overall performance of network, this belongs to high-level requirement.The present invention will take into account two level requirements.Route device of the present invention adopts the parallel routing algorithm of service orientation well to solve above-mentioned compatibility issue, is a kind of good multi-layer multi-domain distributed network routing issue solution.
Summary of the invention
The object of the present invention is to provide a kind of route device of oriented multilayer multiple domain distributed optical network.This device can provide reliable, high-quality, parallel photon link for the inter-domain resource shared service, realizes resource-sharing widely.The present invention is applicable to distributed optical network.
For realizing above-mentioned goal of the invention, the present invention adopts following technical scheme.
A kind of route device of oriented multilayer multiple domain distributed optical network is characterized in that according to service request, and path between computational fields and the territory sends road construction control signaling, realizes the traffic engineering of client to service end.Described route device comprises:
Inter-domain flux engineering database: mainly be responsible between maintenance field virtual topology information and traffic engineering state between link attribute, territory;
Traffic engineering database in the territory: mainly be responsible for network topological information and traffic engineering state in the interior link attribute of maintenance field, the territory;
Universe service database: store the information on services that all territories can provide;
Service database in the territory: the information on services that can provide in this territory is provided;
Message processing unit: handle service request, upgrading Network topological information, issue flux engineering route information, and in the information interaction of each unit of route device inside;
Inter-domain path computing unit: be responsible for reachable path between computing client territory (territory, source address place) and the service-domain;
Path-calculating element in the territory: be responsible for reached at the link in the computational fields, its source address and address, place are to determine according to the loose path of inter-domain path computing unit gained (Loose Path).
A kind of route device of oriented multilayer multiple domain distributed optical network is characterized in that may further comprise the steps:
Step 1: message processing unit receives service request information in the client territory, and specific client address and service type information in the extraction task;
Step 2: message processing unit will obtain information on services and send to the inter-domain path computing unit, the inter-domain path computing unit is according to link-state information in the inter-domain flux engineering database and universe information on services, adopt open shortest path algorithm (the Constraint Open Shortest PathFirst of constraint, COSPF) algorithm, obtain the loose path chain of client territory to service-domain, this chain comprises needs by territory and fringe node information thereof;
Step 3: the inter-domain path computing unit is according to the loose path chain between the gained territory, generate road construction signaling (this signaling mainly comprises the loose path of gained chain information) between a territory, it is transmitted downstream along loose path chain, at first be delivered to the neighborhood route device, the neighborhood route device checks whether purpose is local, is then to accept to be for further processing; Otherwise according to signaling information, the neighborhood node transmits downstream, so transmits, and arrives the route device of service-domain always;
Step 4: the service-domain route device is exported this destination edge node configuration messages according to road construction information between the gained territory to local control program, receives control program answer message, generates reserving message between the territory, and back transfer is given neighborhood;
Step 5 neighborhood routing node is received territory, upstream reserving message, and the local service that will provide is provided, exports this destination edge node configuration messages to local control program, receive key-course answer message after, can continue downward transmission.Generate reserving message, back transfer is given neighborhood, and progressively transmits, up to arriving the client territory;
Step 6 in the road construction process, for an independent territory, after reserving message between its generation territory, can start road construction process in the territory between above-mentioned territory.According to role's difference in territory, can be from the client territory, transmit the territory, service-domain is distinguished;
Path-calculating element is translated into service in the territory according to service database in traffic engineering database in the territory and the territory in the step 71 service-domain territory.After control program was finished the resource layer configuration, route device was confirmed to have disposed link in the territory, can give birth to an acknowledge message, and to next neighborhood transmission;
Path-calculating element in conjunction with topology information in the traffic engineering database in the territory and link information, adopts COSPF path computing rule according to source address and address, place (inlet in this territory and exit address) in the step 72 transmission territory, finishes path computing in the territory;
Path-calculating element in conjunction with topology information in the traffic engineering database in the territory and link information, adopts COSPF path computing rule according to client address information and this territory exit address information in the territory, step 73 client territory, finishes path computing in the territory;
Step 8 neighborhood is received acknowledge message, can wait for configuration successful information in this territory, has only route device to confirm to have disposed link in the territory, just can generate new affirmation message, and continue upstream passing, up to arriving the client territory;
And finish in this territory after the link establishment after receiving acknowledge message in step 9 client territory, confirms to realize that client sets up to the service end light path.
The present invention has the following advantages and effect: the route device method for designing that has proposed a kind of oriented multilayer multiple domain distributed optical network.This device has been realized the distributed control of multi-layer multi-domain network under the SOA architecture, more suitable present network presence; The route matrix of having realized route guidance simultaneously changes to the route matrix of service orientation, has improved the success rate and the efficiency of resource of task; In addition, native system has reduced network road construction time delay by design new routing policy and signaling process mechanism, realizes efficient intercommunication between the territory.
Description of drawings
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is based on the multi-layer multi-domain distributed optical network architectural schematic of SOA;
Fig. 2 is the structural representation of route device of the present invention;
Fig. 3 is the topological abstract method schematic diagram of converged services information among the present invention;
Fig. 4 is that service link is set up signaling process schematic diagram in the process among the present invention;
Fig. 5 is a route device workflow schematic diagram of the present invention;
Embodiment
Shown the network architecture that the present invention uses-among Fig. 1 based on the architecture of the multi-layer multi-domain distributed optical network of SOA.This architecture comprises three levels, comprises application layer, service layer and resource layer.Application layer mainly is responsible for the management of user's processing of request, shared resource, simultaneously concrete operation packing is sent to service layer.Resource layer is concrete link entity, comprises that mainly (Dynamic Adaptation Unit DAU) waits the photosphere resource, but is not limited to these for optical fiber, optical cross connect (OXC), dynamic adaptation unit.Service layer is in the core position of architecture, plays a part to form a connecting link.
Service layer is responsible for upper layer application layer task resolved, and carries out lower floor's resource layer abstract simultaneously.Service layer realizes the unified scheduling to resource according to network requirement in the job request.It has comprised functional modules such as route device, message parse device, load balancing judgment means.(Extent-Service Interface E-SI) communicates, alternately each signaling message by the external service interface to be in not between the same area service layer.
The route device of the oriented multilayer multiple domain distributed optical network among the present invention is in the service layer of above-mentioned analysis, its Core Feature be exactly by with other territories in the route device information interaction of service layer, in conjunction with application demand information and lower floor's resource layer information, for concrete the application set up the client that the satisfies condition photon link to service end.The photon link that the present invention mentions refers to from the client address to the transmission equipment the more full light path of service end address.
In the present invention, the route device of being invented is a functional module of service layer, and its function performance need be installed collaborative work by other, here in order to describe unified other devices are referred to as " other devices " easily.Route device is at the interacting message of service layer, and is also unified for mutual with " other devices ", and this does not represent the inner real structure of service layer just for the route device work characteristics is described.
In conjunction with Fig. 2 the structure of route device is elaborated.Route device has following structure:
Message processing unit: major function is to handle service request, COS comprise serve in the territory in and the territory between serve.Service is characterised in that the customer address of service and address of service all in same territory, do not need to set up domain-to-domain link in the territory.This generic task accounts for more than 70% in that the network genus is most of at present.The present invention also supports this application, but is not emphasis of the present invention.Message processing unit also is responsible for message signalings such as upgrading Network topological information, Link State, issue flux engineering route information, and in the information interaction of inner each unit of route device.
Inter-domain flux engineering database: be responsible for abstract topology information, domain-to-domain link attribute and traffic engineering state information between maintenance field.The domain-to-domain link attribute mainly comprises the information such as length in available bandwidth, total bandwidth, path, mainly is to calculate for the constraint route of inter-domain path computing unit necessary parameter is provided.State is the link operating position of record individual task in the traffic engineering, comprises the numbering of task, concrete link, bandwidth, current state information such as (reservation, uses, expired).Virtual topology is by to forming behind the multiple-domain network topological abstract between the territory, need with other route device information interactions, form a unified topology information.Multiple domain topological abstract technology adopts the abstract technology of single-point of converged services information as shown in Figure 3, will describe in detail below.
Traffic engineering database in the territory: be responsible for network topological information and traffic engineering state information in the interior link attribute of maintenance field, the territory.Traffic engineering database is similar on function to the inter-domain flux engineering database in the territory, it is respectively service for traffic engineering in the territory and inter-domain flux engineering, traffic engineering database is an independent database in the territory, only to open in the territory, belong to the private data storehouse, do not need with other domain informations mutual.Link attribute mainly comprises the information such as length in available bandwidth, total bandwidth, path in the territory, information is the link operating position of each task of record in the traffic engineering, comprise the numbering of task, concrete link, bandwidth, current state (reservation, use, expired) etc., network topological information is the true topology in this territory in the territory, is real physical link.
Universe service database: store all territories information on services can be provided, service and territory, place are shone upon, described the distribution situation of serving, for the route of service orientation between the territory provides information support.As in the A of territory, there being available Video service, then there are a Video service and territory A corresponding relation.A service can corresponding a plurality of service-domains.
Service database in the territory: the service type information that can provide in this territory is provided, service and institute corresponding with service address are shone upon, described the true address that service is provided, for the path computing of path-calculating element in the territory provides information; There is available Video service as main frame P in the A of territory, then has a Video service and main frame P corresponding relation.A service can corresponding many main frames.
Inter-domain path computing unit: reachable path between computing client territory and the service-domain.The client territory is meant the territory at source address node place, and service-domain is meant the territory that this service can be provided.The information on services that provides according to Signaling Processing Unit, information in conjunction with universe service database and inter-domain flux engineering database, selected COSPF path priority algorithm, calculate the loose path of acquisition (if there are a plurality of service-domains from the client territory to service-domain, select optimum), be a territory " chain " in form.Though the gained result is not concrete actual physical path, can determine the situation of the fringe node in territory by the loose path of gained according to the mapping principle (back can describe in detail) of inter-domain flux engineering database topological abstract.
Path-calculating element in the territory: be responsible for the reachable path in the computational fields, dividing this territory is service-domain and two kinds of situations of non-service-domain, and the main distinction is whether need to call service database information in the territory.Under the service-domain situation, adopt the service orientation routing algorithm, according to serving database information in traffic engineering database in the territory and the territory, calculate a path from this realm entry to the address of service.Under non-service-domain situation, adopt the routing algorithm of purpose guiding, according to traffic engineering database in the territory, generate a strict path that from the realm entry to the territory, exports (specify: the task source address is regarded " inlet " as in the territory, will regard the address, place of task as " outlet " in the service-domain).
Below in conjunction with Fig. 3, the specific implementation method of topological abstract between the territory of detailed description converged services information.Here need to prove, the territory of being distinguished among Fig. 3 is not because the huge difficulty that causes network management of network size, for the flexibility that improves network resource scheduling or strengthen ability, and take the zoning, become that means such as greatly little generate Network Management.Here the division of multiple domain be since the network equipment belong to different managers or belong to same owner but since the difference of network technology effectively intercommunication cause.
Fig. 3 comprises up and down two parts, and lower floor be concrete real physical topology, and the upper strata is the virtual topology that forms after the employing topological abstract technology, comprises independently territory of six of territory A, territory B, territory C, territory D, territory E, territory F.All there is own independent control program in each territory, and topology is relatively-stationary in each territory, does not have the possibility of repartitioning with other neighborhoods.For example, though there is link in territory A with territory B, C, territory B or C adjacent node can not be divided into territory A, and forms new A territory.In the topological abstract algorithm of multiple domain, main consider comprise in the territory and the factor of two aspects between the territory.The present invention adopts the topological abstract method to be: the single domain single-point is abstract, and domain-to-domain link directly shines upon, and information on services is associated with the territory.
So-called single domain single-point is abstract, in other words for topological Fuzzy processing in the territory, does not distinguish territory interior nodes situation, link between the interior nodes of territory is not done concrete processing, but with entire domain abstract be a node.This node is not any one point in original topology, is a virtual node, serves as the agent node that this territory is connected with other territories.Among the figure territory A abstract be node A in the virtual topology, territory B is abstract to be Node B etc. in the virtual topology.
Domain-to-domain link adopts directly mapping, and complete reservation domain-to-domain link comprises that basic link attributes such as its bandwidth, length remain unchanged.For example, between territory A and territory B, there is a link L1, bandwidth 1Gbit/s, length 20Km, after finishing topological abstract, node A also can exist a same link L1 (title can be different), the same 1Gbit/s of bandwidth with Node B in the abstract topology so, the same 20Km of length has described the truth of domain-to-domain link truly; For there being multilink between the territory, the same employing directly shone upon.Such as between territory A and territory B, having another link L2, also can there be a same link L2 in node A and Node B in abstract topology equally.
Information description between the abstract territory of above-mentioned link and not exclusively can not be finished road construction function between the territory.When setting up domain-to-domain link between needs territory A and the territory B,, will produce the not clear problem that refers to owing to have L1, L2 two paths.In order to address this problem, the fringe node information of domain-to-domain link need be included in its inside.Such as L1 mapping is not only comprised concrete bandwidth, length etc. parameter also should comprise its terminal point information A_L1 (fringe node of expression link L1 in the A of territory, below identical) and B_L1.These map informations are stored in the inter-domain flux engineering database equally.
Information on services is directly linked to the abstract node in territory, place in the territory, as having a Video service at territory A, the mapping rear video is directly corresponding with virtual endpoint A, these information can be stored in the universe service database, but do not store the information (these information can be stored in the territory and serve in the information database) to service endpoints can be provided; There is the situation of a plurality of similar services for single domain,, after abstract, unifiedly is data, services, do not distinguish as there being two data services among the B of territory.
How end to end this route device is service-oriented, and non-traditional towards destination address, its characteristics are that the present invention not only can provide traditional link end to end, and can provide according to service request and hold multiterminal, link.Thereby, below the explanation in the client of mentioning not merely represent link end to end to the link of service end.Below in conjunction with Fig. 4 and Fig. 5, specify the process that service link is set up.
Step 1: initialization mainly comprises topological sum information on services storage in abstract, the territory of finishing topological sum information on services between the territory.
Step 2: information process unit receives service request, extracts Service Properties, comprises parameters such as customer address, COS;
Step 3: whether in this territory, service request can be divided into 2 kinds of different situations and handle: the service that (1) this territory can provide, the service that (2) this territory can not provide according to requested service;
For situation (1), its step is as follows:
Step 4: institute this territory of requested service can provide, and then need not cross-domain services, can directly start service processes in the territory;
Step 5: path-calculating element in the territory, in conjunction with service database in traffic engineering database in the territory and the territory, adopt the COSPF algorithm, obtain shortest path;
Step 6: in the territory,, finish relevant link configuration in the territory by routing information (Intra_Resv) signaling in routing information in the interaction area (Intra_Path) and the territory,
Step 7 is more counted traffic engineering according to the storehouse in the neofield, and more new data is to be determined by information among the Intra_Path;
The service link establishment is finished in step 8 territory.
For situation (2), its step is as follows:
Step 4: institute this territory of requested service can not provide, and needs cross-domain service, starts service processes between the territory;
Step 5: the inter-domain path computing unit adopts the COSPF algorithm in conjunction with inter-domain flux engineering database information and universe service database, obtains a loose inter-domain path from the client territory to service-domain;
Step 6: according to the loose inter-domain path of gained, client territory territory downstream sends inter-domain path message (Inter_Path) signaling, and transmits by the territory along loose path, arrives territory, place, service source always.In the parallel control that following step adopts, set up the difference of role in the process according to each territory at service link, can be divided into: client territory, transmission territory, service-domain;
For service-domain:
Step 7: after receiving Inter_Path message, service layer can finish the configuration of the domain-to-domain link between this territory and the territory, upstream according to loose path in the Inter_Path message, realizes the link circuit resource reservation;
Step 8 will generate reserving message between the territory (Inter_Resv) after finishing inter-domain resource reservation, and with its neighborhood transmission upstream;
Step 9: service between the territory is converted in the territory and serves, and particular content is converted into: with the entry address in this territory in loose path client as service request in the territory, simultaneously with the COS of service request between the territory as service requested service type in the territory;
Step 10: carry out according to situation (1) step;
Step 11: behind completing steps 9, the task acknowledge message (OK) of Fa Songing upstream shows that service end finished relevant configuration.
For transmitting the territory:
Step 7: after receiving the Inter_Path that the downstream neighborhood sends,, the configuration of the domain-to-domain link between this territory and the territory, upstream is finished, waited for that then downstream domain sends Inter_Resv message according to loose routing information wherein;
Step 8: after receiving the Inter_Resv that downstream domain is sent, Inter_Resv can be sent to its upstream neighborhood;
Step 9: start computing unit in the territory, adopt the routing algorithm of purpose guiding, in conjunction with the information of data on flows storehouse engineering in the territory, calculate the inlet that order ground, source is this territory, the place purpose is an optimal path in the territory of outlet in this territory;
Step 10:, finish the configuration of link in the territory by Intra_Resv Signalling exchange in Intra_Path in the territory and the territory;
Step 11 is more counted traffic engineering according to the storehouse in the neofield, and more new data is to be determined by information among the Intra_Path;
Step 12: after receiving the task acknowledge message in downstream, and completing steps 9, upstream the task acknowledge message of Fa Songing transmits the territory and finishes relevant configuration.
For the client territory:
Step 7: after receiving the Inter_Resv message that the downstream neighborhood sends, will more count traffic engineering between neofield according to the storehouse, more new data is to be determined by information among the Inter_path;
Step 8: start computing unit in the territory, in conjunction with the information of data on flows storehouse engineering in the territory, the source purpose of calculating is the optimal path that client and place purpose export for this territory;
Step 9: by Intra_Resv Signalling exchange in Intra_Path in the territory and the territory, finish the configuration of link in the territory,
Step 10 is more counted traffic engineering according to the storehouse in the neofield, and more new data is to be determined by information among the Intra_Path;
Step 11: in the task acknowledge message (OK) of receiving that downstream domain sends, and confirm that step 10 finishes, then client is to the successfully foundation of the photon link of service end, and service can begin to carry out.
Route device and method to oriented multilayer multiple domain distributed optical network of the present invention has been described in detail above, but specific implementation form of the present invention is not limited thereto.For the those skilled in the art in present technique field, the various conspicuous change of under the situation of spirit that does not deviate from the method for the invention and claim scope it being carried out is all within protection scope of the present invention.
Claims (2)
1. the route device of an oriented multilayer multiple domain distributed optical network, it is characterized in that service request according to client, set up the photon link of one or more client to service end, realize the traffic engineering of client to service end, it has realized being the route matrix of guiding with the service, and described route device comprises:
Message processing unit: major function is to handle service request, COS comprise serve in the territory in and the territory between serve;
Inter-domain flux engineering database: be responsible for abstract topology information, domain-to-domain link attribute and traffic engineering state information between maintenance field;
Traffic engineering database in the territory: be responsible for network topological information and traffic engineering state information in the interior link attribute of maintenance field, the territory;
Universe service database: store all territories information on services can be provided, service and territory, place are shone upon, described the distribution situation of serving, for the route of service orientation between the territory provides information support;
Service database in the territory: the service type information that can provide in this territory is provided, service and institute corresponding with service address are shone upon, described the true address that service is provided, for the path computing of path-calculating element in the territory provides information;
Inter-domain path computing unit: reachable path between computing client territory and the service-domain, the inter-domain path computing unit adopts the route computing method of service orientation, carry out path computing in conjunction with the information that inter-domain flux engineering database and universe service database provide, result of calculation is the information of the fringe node in loose path and each territory between the territory, calculates loose path chain from the client territory to service-domain with this;
Path-calculating element in the territory: be responsible for the reachable path in the computational fields, dividing this territory is service-domain and two kinds of situations of non-service-domain, and the main distinction is whether need to call service database information in the territory; Under the service-domain situation, adopt the service orientation routing algorithm, according to the information of service database in traffic engineering database in the territory and the territory, calculate a path from this realm entry to the address of service.
2. the method for routing of an oriented multilayer multiple domain distributed optical network is characterized in that may further comprise the steps:
Step 1: message processing unit receives service request information in the client territory;
Step 2: the inter-domain path computing unit in client territory adopts the route computing method of service orientation, carry out path computing in conjunction with the information that inter-domain flux engineering database and universe service database provide, result of calculation is the information of the fringe node in loose path and each territory between the territory, calculates the loose path chain of client territory to service-domain with this; Wherein all territories of universe service data library storage can provide information on services, and service and territory, place are shone upon, and have described the distribution situation of serving, for the route of service orientation between the territory provides information support;
Step 3: the client territory sends inter-domain path message signaling Inter_Path, and this signaling is transmitted by the territory downstream along loose path, up to arriving service-domain;
Step 4: service-domain disposes the domain-to-domain link in this territory and territory, upstream, generates reserving message Inter_Resv between the territory, sends to the upstream neighborhood;
Step 5 transmits the territory and receives downstream Inter_Resv message, disposes the domain-to-domain link in this territory and territory, upstream, with the Inter_Resv upstream passing, up to arriving the client territory;
Step 6 in the road construction process, for each territory, after it sends Inter_Resv message, can start road construction process in the territory between the territory;
Step 71 service-domain is converted into task between the territory in the territory and serves, and finishes relevant configuration, generates OK message then, and neighborhood transmission upstream; Wherein path-calculating element is responsible for the interior reachable path of computational fields in the service-domain territory, under the service-domain situation, adopt the service orientation routing algorithm, path-calculating element calculates a path from this realm entry to the address of service according to the information of service database in traffic engineering database in the territory and the territory in the service-domain territory; Wherein, the service type information that can provide in service database storage this territory in the territory to serving and institute corresponding with service address is shone upon, has been described the true address that service is provided, for the path computing of path-calculating element in the territory provides information;
Path-calculating element calculates optimal path in the territory, and finishes link configuration in the territory according to source address and address, place in the step 72 transmission territory;
Path-calculating element calculates optimal path in the territory according to client address and this territory exit address in the territory, step 73 client territory, and finishes link configuration in the territory;
After OK message was received in step 8 transmission territory, link configuration success in this territory, territory by the time continued territory transmission upstream with OK message, up to arriving the client territory;
Step 9 client receives OK message in the territory, link configuration success in this territory, territory by the time, and the affirmation service link is set up successfully.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102400874A CN101459610B (en) | 2008-12-18 | 2008-12-18 | Routing apparatus and method oriented to multi-layer multi-domain distributed optical network |
| PCT/CN2009/070058 WO2010069156A1 (en) | 2008-12-18 | 2009-01-07 | A routing device and method oriented to distributed optical network of multi-layers and multi-domains |
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| CN2008102400874A CN101459610B (en) | 2008-12-18 | 2008-12-18 | Routing apparatus and method oriented to multi-layer multi-domain distributed optical network |
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| CN101459610B true CN101459610B (en) | 2011-05-25 |
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| CN101699803B (en) * | 2009-11-02 | 2011-08-10 | 北京科技大学 | Inter-domain routing method based on distribution type multi-layer multi-domain optical network |
| CN102916930B (en) * | 2011-08-02 | 2018-01-23 | 中兴通讯股份有限公司 | Fused business network and its node, resource request routing iinformation acquisition methods |
| CN103166876B (en) * | 2011-12-08 | 2018-05-04 | 中兴通讯股份有限公司 | Data transmission method for uplink and device between OpenFlow network domains |
| CN103795641B (en) * | 2014-01-10 | 2016-11-23 | 中国人民解放军西安通信学院 | The optical network resource management method mapped based on multidimensional frame |
| CN105450541B (en) * | 2014-08-29 | 2018-10-02 | 阿尔卡特朗讯 | Based on service link by the method and apparatus of application data packet |
| CN104301391B (en) * | 2014-09-19 | 2019-02-22 | 北京邮电大学 | Multi-area optical network data center resource virtualizes mapping method |
| US10700967B2 (en) * | 2015-10-14 | 2020-06-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Control of multi-layer communication network |
| CN107181680B (en) * | 2016-03-11 | 2020-11-03 | 中兴通讯股份有限公司 | Method and system for realizing SDO function and SDON system |
| CN109962937B (en) | 2017-12-14 | 2021-08-17 | 中兴通讯股份有限公司 | Multi-domain multi-layer connection service establishing method and device |
| CN113055084B (en) * | 2021-03-19 | 2022-04-26 | 烽火通信科技股份有限公司 | Method and system for recovering optical network service fault |
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