CN102098591B - Method for sharing resources in automatic switched optical network (ASON) and service node - Google Patents
Method for sharing resources in automatic switched optical network (ASON) and service node Download PDFInfo
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Abstract
The invention discloses a method for sharing resources in an automatic switched optical network (ASON), which comprises that: a first service node sets all connected resources in a service are allowed to be shared and used by connection to be established, calculates connection routing according to shared resource information and own routing strategy of the service in service establishment, recovery or optimization operations, and transmits a path message to the service node on the connection routing; and the service node on the connection routing allocates identical resources to the connection in the same service according to a service identifier in the path message, and performs cross configuration according to the allocated resources. The invention also discloses the service node. Due to the adoption of resource sharing in the service establishment, recovery or optimization process, the method and the service node can save network resources, improve system performance, and greatly increase the possibility of successfully establishing, recovering or optimizing the service under the condition of insufficient network resources.
Description
Technical field
The present invention relates to optical communication field, relate in particular to method and the service node of resource-sharing in a kind of ASON (ASON, AutomaticSwitched Optical Network).
Background technology
In traditional optical-fiber network, Internet resources are monopolized by each bar business, even introduce ASON (ASON, Automatic Switched Optical Network) after the technology, when operations such as foundation, recovery or the optimization of carrying out business, the strategy that the difference in the same business still takes resource to monopolize between connecting.Because the ASON network is a distributed system, any one network element all may be initiated professional operations such as foundation, recovery or optimization at any time as the first node of business in the ASON network, therefore, inadequate or when the many places fault takes place when the carrier network resource, if take resource to monopolize strategy, the problem of attended operation failure will appear.In addition, the strategy of taking resource to monopolize when business recovery needs the pointwise intersection of configure business again, can increase the expense of system like this, can not satisfy the performance requirement of fast quick-recovery.
At present, only mentioned the solution of resource-sharing in data network, this scheme normally utilizes the label folding in multiprotocol label switching (MPLS, the Multi-Protocol Label Switching) network to realize resource-sharing.Yet the label in the optical-fiber network is different fully with the meaning tag in the data network, and the concept that does not have label to merge in the optical-fiber network, and therefore, the Resource Sharing Technology of current existence can't be applied in the ASON network.
Summary of the invention
In view of this, main purpose of the present invention is to provide method and the service node of resource-sharing among a kind of ASON, to realize the resource-sharing in the ASON network.
For achieving the above object, technical scheme of the present invention is achieved in that
The method of resource-sharing in a kind of ASON provided by the present invention (ASON) comprises:
Interior all connection resources permissions of the business that arranges on the professional first node are shared by connection to be set up and are used, and when carrying out professional foundation, recover or optimizing operation, the first node of described business according to resources shared information and professional self routing policy calculate link road by, and to described link road by last service node transmit path message;
Described link road according to the service identification in the described PATH, for the connection that belongs in the identical services distributes same asset, and carries out cross-over configuration according to the resource of distributing by last service node.
The described connection that belongs in the identical services comprises: initially connect, recover to connect and optimize at least a in being connected, and described initial connection, recover to connect with optimizing to be connected respectively and further comprise: the work connection is connected with protecting.
Described routing policy comprises: must be through keeping away the constraint of constraint and independence.
Described service identification is made up of source node sign (ID), destination node ID and traffic ID;
Described service node, is specially for the connection that belongs in the identical services distributes same asset according to the service identification in the PATH:
Described service node is with source node ID, destination node ID and traffic ID in the PATH, source node ID, destination node ID and traffic ID in the service identification of storing with self are mated, if the match is successful, then be that the identical professional interior connection of described service identification distributes same asset; If coupling is unsuccessful, then be to connect independent Resources allocation in the described PATH in the service identification corresponding service.
Described resource according to distribution is carried out cross-over configuration, is specially:
Described service node judges whether to exist and belongs in the same business other with the resource of distributing and be connected and the shared resource that is connected to be set up, and all shares if belong in the connection resource in the same business input resource and output resource, does not then issue intersection; If the input resource-sharing, the output resource is not shared, and then goes into one according to normal one and goes out mode and issue intersection; If the input resource is not shared, the output resource-sharing is then gone into one according to two and is gone out mode and issue intersection; If input resource and output resource are not shared, then go into one according to normal one and go out mode and issue intersection.
This method further comprises: if there is more than two the output resource-sharing that connects, and the input resource is not shared, and then selects two connections to go into one according to two from described connection more than two and goes out mode and issue intersection.
The present invention also provides a kind of service node, and this service node comprises: link control module, consultative management module, resource management module and cross-over configuration module, wherein,
Described link control module, all connection resources allow to be shared use by connection to be set up in the business for arranging at the first node of business, and carry out at the first node of described business and professionally to set up, to recover or when optimizing operation, the routing policy of resources shared information and described business self is sent to described consultative management module;
Described consultative management module is used for the routing policy according to described resources shared information and business self, calculates link road by returning to described link control module; Described link control module to described link road by last service node transmit path message;
Described resource management module, be used for link road by on service node when receiving PATH, according to the service identification in the described PATH, for the connection that belongs in the identical services distributes same asset;
Described cross-over configuration module is used for carrying out cross-over configuration according to the resource of distributing.
The described connection that belongs in the identical services comprises: initially connect, recover to connect and optimize at least a in being connected, and described initial connection, recover to connect with optimizing to be connected respectively and further comprise: the work connection is connected with protecting.
Described routing policy comprises: must be through keeping away the constraint of constraint and independence.
Described service identification is made up of source node ID, destination node ID and traffic ID;
Described resource management module is further used for, with source node ID, destination node ID and the traffic ID in the PATH, source node ID, destination node ID and traffic ID in the service identification of storing with self are mated, if the match is successful, then be that the identical professional interior connection of described service identification distributes same asset; If coupling is unsuccessful, then be to connect independent Resources allocation in the described PATH in the service identification corresponding service.
Described cross-over configuration module is further used for, judge whether to exist and belong in the same business other with the resource of distributing and be connected and the shared resource that is connected to be set up, all share if belong in the connection resource in the same business input resource and output resource, then do not issue intersection; If the input resource-sharing, the output resource is not shared, and then goes into one according to normal one and goes out mode and issue intersection; If the input resource is not shared, the output resource-sharing is then gone into one according to two and is gone out mode and issue intersection; If input resource and output resource are not shared, then go into one according to normal one and go out mode and issue intersection.
Described cross-over configuration module is further used for, and the output resource that connects more than two is identical existing, and the input resource is not simultaneously, selects two connections to go into one according to two from described connection more than two and goes out mode and issue intersection.
Method and the service node of resource-sharing among a kind of ASON provided by the present invention, all connection resources allow to be shared use by connection to be set up in the first node of business arranges business, and when carrying out professional foundation, recover or optimizing operation, professional first node according to resources shared information and professional self routing policy calculate link road by, and to link road by last service node transmit path message; Link road according to the service identification in the described PATH, for the connection that belongs in the identical services distributes same asset, and carries out cross-over configuration according to the resource of distributing by last service node.By the present invention, not only can conserve network resources, improve systematic function, and under the situation of Internet resources deficiency, improved the professional probability of successfully setting up, recovering or optimize greatly; In addition, issue intersection at service node in the SNCP mode, also strengthened professional reliability.
Description of drawings
Fig. 1 is the structural representation of a kind of service node of the present invention;
Fig. 2 is the input and output schematic diagram of node in the embodiment of the invention;
Fig. 3 is the ASON network diagram in the embodiment of the invention;
Fig. 4 is the resource share method flow chart in the embodiment of the invention.
Embodiment
The technical solution of the present invention is further elaborated below in conjunction with the drawings and specific embodiments.
For realizing the resource-sharing in the ASON network, the method of resource-sharing among a kind of ASON provided by the present invention, its core concept is: professional interior all connection resources are set on the professional first node in the ASON network allow to be shared use by connection to be set up, and when carrying out professional foundation, recover or optimizing operation, professional first node according to resources shared information and professional self routing policy calculate link road by, and to link road by last service node transmit path message; Link road according to the service identification in the described PATH, for the connection that belongs in the identical services distributes same asset, and carries out cross-over configuration according to the resource of distributing by last service node.
Based on above-mentioned core concept, the invention provides a kind of structure of service node, as shown in Figure 1, this service node comprises: link control module 10, consultative management module 20, resource management module 30 and cross-over configuration module 40, and these modules all belong to the control plane assembly of service node.
Cross-over configuration module 40, be used for carrying out cross-over configuration according to the resource of distributing, concrete: as to judge whether to exist to belong in the same business other with the resource of distributing and be connected and the shared resource that is connected to be set up, all share if belong in the connection resource in the same business input resource and output resource, then do not issue intersection; If the input resource-sharing, the output resource is not shared, and then goes into one according to normal one and goes out mode and issue intersection; If the input resource is not shared, the output resource-sharing is then gone into one according to two and is gone out mode and issue intersection; If input resource and output resource are not shared, then go into one according to normal one and go out mode and issue intersection.
So-called input resource, the business of referring to enters the position of service node; The output resource refers to professional position of flowing out service node.As shown in Figure 2, be two-way connection business, professional positive direction is that port 01 is input, and port 02 is output; Be that port 04 is input in the other direction, port 03 is output.Service node among the figure comprises two inputs and two outputs.In addition, the so-called intersection, namely refer to the mapping relations of input and output, the mapping of namely having stipulated professional input and output.One goes into one goes out mode and issues intersection, refers to and is not with protected mode to issue intersection, be i.e. the mapping of a corresponding output of input; Two go into one goes out mode and issues intersection, refers to and takes the SNCP mode to issue intersection, be i.e. the mapping of two corresponding outputs of input.
Need to prove that if exist more than two the output resource (output) that connects identical, and input resource (input) difference can be selected two connections so from this connection more than two, and go into one according to two and go out mode and issue intersection.About the specific implementation of cross-over configuration, will in follow-up embodiment, describe in detail.
Be example with RSVP (RSVP, Resource reservation Protocol) below, above-mentioned resource share method is further elaborated.At the ASON of the embodiment of the invention shown in Figure 3 network, comprise A, B, four network elements of C, D, the link bandwidth resource between each network element, and service channel all connects by optical fiber, STM-N represents that the maximum bandwidth resource of respective links is N vc4, and vc4 represents the granularity of Internet resources.
To set up a speed be vc4 to network element A and can recover recoverable one way traffic to network element D, and it is A → C → D that network element A finds professional route.After business is set up successfully, link
Break down, professional first node A initiates business recovery, and handling process may further comprise the steps as shown in Figure 4:
Step 401, the connection management module of network element A to consultative management module inquiry recover link road by, the information of importing into comprises: faulty link
Must keep away constraint, and the resource of sharable former connection uses information (being resources shared information) to comprise: link
, link
The recovery link road that inquires is by being: A → B → C → D.
Step 402～403, network element A to the application of local resource administration module No. 1 vc4 of A1 light mouth, apply for that successfully the back to network element B transmit path (Path) message, needs to carry the resource information that network element A is traffic assignments, i.e. No. 1 vc4 in this Path message.
Step 404～405, the Path message of recovering to connect arrives network element B, and the timeslot number (i.e. No. 1 vc4) of network element A application is followed in this connection, also applies for No. 1 vc4 of B1 light mouth to the resource management module of network element B, and No. 1 vc4 of B2 light mouth, apply for that successfully the back sends Path message to network element C.
Step 406～407, the Path message that recover to connect arrives network element C, and the timeslot number of network element B application is followed in this connection, also applies for No. 1 vc4 of C2 light mouth and No. 1 vc4 of C3 light mouth to the resource management module of network element B.Because this business is recoverable business, former connection still takies No. 1 vc4 of C3 light mouth, but resource management module is judged this recovery connection and is belonged to same business with former the connection, therefore recovers to connect No. 1 vc4 that also uses C3 light mouth, applies for that successfully the back is to network element D transmission Path message.
Step 408～409, the Path message of recovering to connect arrives network element D, and the timeslot number of network element C application is followed in this connection, also applies for No. 1 vc4 of D1 light mouth to the resource management module of network element D.Because No. 1 vc4 of the D1 light mouth of network element D is still taken by former connection, but resource management module is judged this recovery connection and is belonged to same business with former the connection, therefore recover to connect No. 1 vc4 that also uses D1 light mouth, apply for that successfully the back issues the intersection request to network element D cross-over configuration module.The cross-over configuration module of network element D detects the recovery connection and the former network element D that is connected shares the input and output resource fully, therefore need not issue intersection, reserves (Resv) message to network element C loopback, and this Resv message is passed through the transmission plane by the cross-over configuration module and sent.
Step 410～411; the Resv message of recovering to connect arrives network element C, and the cross-over configuration module of network element C detects the recovery connection and the former network element C input resource that is connected is not shared, but the output resource-sharing; then issue intersection in the SNCP mode, issuing successfully, the back sends Resv message to network element B.
Step 412～413; the Resv message of recovering to connect arrives network element B; the cross-over configuration module of network element B detects recovers to be connected network element B not and any with in professional other are connected shared resource, then issues intersection with non-protected mode, issue successfully after to network element A transmission Resv message.
Step 414; the Resv message that recovery connects arrives network element A, and the cross-over configuration module of network element A detects the recovery connection and the former network element A that is connected imports resource-sharing, but the output resource is not shared; then issue intersection with non-protected mode, issue successfully after then business recovery operation finish.
In sum, the present invention not only can conserve network resources, improves systematic function, and under the situation of Internet resources deficiency, has improved the professional probability of successfully setting up, recovering or optimize greatly; In addition, issue intersection at service node in the SNCP mode, also strengthened professional reliability.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.
Claims (10)
1. the method for resource-sharing among the ASON ASON is characterized in that this method comprises:
Interior all connection resources permissions of the business that arranges on the professional first node are shared by connection to be set up and are used, and when carrying out professional foundation, recover or optimizing operation, the first node of described business according to resources shared information and professional self routing policy calculate link road by, and to described link road by last service node transmit path message;
Described link road according to the service identification in the described PATH, for the connection that belongs in the identical services distributes same asset, and carries out cross-over configuration according to the resource of distributing by last service node; Described cross-over configuration is specially: described service node judges whether to exist and belongs in the same business other with the resource of distributing and be connected and the shared resource that is connected to be set up, all share if belong in the connection resource in the same business input resource and output resource, then do not issue intersection; If the input resource-sharing, the output resource is not shared, and then goes into one according to normal one and goes out mode and issue intersection; If the input resource is not shared, the output resource-sharing is then gone into one according to two and is gone out mode and issue intersection; If input resource and output resource are not shared, then go into one according to normal one and go out mode and issue intersection.
2. according to the method for resource-sharing among the described ASON of claim 1; it is characterized in that; the described connection that belongs in the identical services comprises: initially connect, recover to connect and optimize at least a in being connected, and described initial connection, recover to connect with optimizing to be connected respectively and further comprise: the work connection is connected with protecting.
3. according to the method for resource-sharing among the described ASON of claim 1, it is characterized in that described routing policy comprises: must be through keeping away the constraint of constraint and independence.
4. according to the method for resource-sharing among claim 1 or the 2 or 3 described ASON, it is characterized in that described service identification identifies ID, destination node ID by source node and traffic ID is formed;
Described service node, is specially for the connection that belongs in the identical services distributes same asset according to the service identification in the PATH:
Described service node is with source node ID, destination node ID and traffic ID in the PATH, source node ID, destination node ID and traffic ID in the service identification of storing with self are mated, if the match is successful, then be that the identical professional interior connection of described service identification distributes same asset; If coupling is unsuccessful, then be to connect independent Resources allocation in the described PATH in the service identification corresponding service.
5. according to the method for resource-sharing among claim 1 or the 2 or 3 described ASON, it is characterized in that, this method further comprises: if there is the output resource-sharing that connects more than two, and the input resource is not shared, and then selects two connections to go into one according to two from described connection more than two and goes out mode and issue intersection.
6. a service node is characterized in that, this service node comprises: link control module, consultative management module, resource management module and cross-over configuration module, wherein,
Described link control module, all connection resources allow to be shared use by connection to be set up in the business for arranging at the first node of business, and carry out at the first node of described business and professionally to set up, to recover or when optimizing operation, the routing policy of resources shared information and described business self is sent to described consultative management module;
Described consultative management module is used for the routing policy according to described resources shared information and business self, calculates link road by returning to described link control module; Described link control module to described link road by last service node transmit path message;
Described resource management module, be used for link road by on service node when receiving PATH, according to the service identification in the described PATH, for the connection that belongs in the identical services distributes same asset;
Described cross-over configuration module, be used for carrying out cross-over configuration according to the resource of distributing, described cross-over configuration is specially: described cross-over configuration module judges whether to exist and belongs in the same business other with the resource of distributing and be connected and the shared resource that is connected to be set up, all share if belong in the connection resource in the same business input resource and output resource, then do not issue intersection; If the input resource-sharing, the output resource is not shared, and then goes into one according to normal one and goes out mode and issue intersection; If the input resource is not shared, the output resource-sharing is then gone into one according to two and is gone out mode and issue intersection; If input resource and output resource are not shared, then go into one according to normal one and go out mode and issue intersection.
7. according to the described service node of claim 6; it is characterized in that; the described connection that belongs in the identical services comprises: initially connect, recover to connect and optimize at least a in being connected, and described initial connection, recover to connect with optimizing to be connected respectively and further comprise: the work connection is connected with protecting.
8. according to the described service node of claim 6, it is characterized in that described routing policy comprises: must be through keeping away the constraint of constraint and independence.
9. according to claim 6 or 7 or 8 described service nodes, it is characterized in that described service identification is made up of source node ID, destination node ID and traffic ID;
Described resource management module is further used for, with source node ID, destination node ID and the traffic ID in the PATH, source node ID, destination node ID and traffic ID in the service identification of storing with self are mated, if the match is successful, then be that the identical professional interior connection of described service identification distributes same asset; If coupling is unsuccessful, then be to connect independent Resources allocation in the described PATH in the service identification corresponding service.
10. according to claim 6 or 7 or 8 described service nodes, it is characterized in that, described cross-over configuration module is further used for, the output resource that connects more than two is identical existing, and the input resource is not simultaneously, selects two connections to go into one according to two from described connection more than two and goes out mode and issue intersection.
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| CN112803995B (en) * | 2016-09-22 | 2022-07-19 | 华为技术有限公司 | Resource sharing method, network node and related equipment |
| CN113169939B (en) | 2018-12-11 | 2022-11-11 | 华为技术有限公司 | Method, network equipment and system for establishing service path |
| CN114116200B (en) * | 2021-10-27 | 2024-04-05 | 北京百度网讯科技有限公司 | Resource sharing method, service creation method, device and electronic equipment |
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| CN1773947A (en) * | 2004-11-09 | 2006-05-17 | 中兴通讯股份有限公司 | Method for realizing optical group broadcasting in intelligent optical network |
| CN1874293A (en) * | 2005-06-04 | 2006-12-06 | 华为技术有限公司 | Information transmission method of optical network of automatic exchange |
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| CN1773947A (en) * | 2004-11-09 | 2006-05-17 | 中兴通讯股份有限公司 | Method for realizing optical group broadcasting in intelligent optical network |
| CN1874293A (en) * | 2005-06-04 | 2006-12-06 | 华为技术有限公司 | Information transmission method of optical network of automatic exchange |
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