CN102223310A - Parallel signaling based multi-cast recovery mechanism in distributed intelligent optical network - Google Patents
Parallel signaling based multi-cast recovery mechanism in distributed intelligent optical network Download PDFInfo
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- CN102223310A CN102223310A CN2011101940631A CN201110194063A CN102223310A CN 102223310 A CN102223310 A CN 102223310A CN 2011101940631 A CN2011101940631 A CN 2011101940631A CN 201110194063 A CN201110194063 A CN 201110194063A CN 102223310 A CN102223310 A CN 102223310A
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Abstract
The invention discloses a parallel signaling based multi-cast recovery mechanism in a distributed intelligent optical network, belonging to the technical field of distributed intelligent optical networks, and comprising the following steps that during the multicast business recover process of the distributed intelligent optical networks, branches in a multicast tree are segmented; and each segment is used as a sub route, a sub source node and a sub destination node of the sub route of each segment are set, the sub routes of the segments initiate signaling in parallel, sub label switching paths are simultaneously set up, and then sub label switching paths of the segments are combined into a complete multicast tree. Through the parallel signaling-based recovery mechanism, the quick recovery of multicast business in the distributed intelligent optical network is realized.
Description
Technical field
The present invention relates in a kind of distributed intelligence optical-fiber network to belong to the distributed optical network technical field based on the multicast recovery mechanism of parallel signaling.
Background technology
The distributed intelligence optical-fiber network that is transmitted as principal character with service-oriented, grouping is one of important directions of development of optical network of future generation.Compare with traditional optical transfer network, it has intellectuality, characteristics such as distributed, can realize professional quick distribution, automatically protection recover, the resource allocation of dynamic high-efficiency etc.
Powerful control plane is one of key technology that realizes the distributed intelligence optical-fiber network.For this reason, International Standards Organization furthers investigate the control plane correlation technique, and has proposed corresponding protocol and standard.Wherein, ASON (ASON, Automatically Switched Optical Network) G.8080 framework, defined the main functional modules in the control plane, and general multiple protocols label exchange (GMPLS, Generalized MultiProtocol Label Switching) establishment of system provides the basis of specific implementation for control plane.
The distributed intelligence optical-fiber network mainly is made up of three planes: transmit plane, control plane and management plane.Transmit the plane and form, can be customer service unidirectional end to end or two-way connection is provided by a series of distributed transmission entities.The control plane function is finished by distributed node; by using distributed signaling capability, each node can be finished and professionally end to end set up, the professional dismounting, and protection such as switches at function; greatly improved networks efficiency, realized new business is supported flexibly, dynamically and efficiently.
Along with the development of the Internet new business, multicast-capable and survivability thereof also become one of critical function of distributed intelligence optical-fiber network.The survivability of multicast comprises protection and recovers that traditional multicast recovery mechanism need be rebuild multicast tree when fault takes place, and not only signaling procedure is more complicated but also need recovery time than length than clean culture.
Summary of the invention
In order to improve the restorability of multicast service in the distributed intelligence optical-fiber network, especially recovery time, the invention provides in a kind of distributed intelligence optical-fiber network multicast recovery mechanism based on parallel signaling.Described technical scheme is as follows:
Based on the multicast recovery mechanism of parallel signaling, described mechanism comprises in a kind of distributed intelligence optical-fiber network:
Calculated behind the restoration route of multicast by branch node the restoration route of multicast tree is carried out segmentation, every section as a sub-route.As the component node, terminal point is as the node of specific item with the starting point of every cross-talk route.
Every cross-talk route is initiated signaling respectively concurrently by the component node and is carried out road construction, and sub-label switched path is set up in segmentation concurrently.
If the equal road construction success of each cross-talk label switched path just merges all sub-label switched paths, constitute complete recovery label switched path multicast tree, thereby realize fast quick-recovery.
If the said process failure then recovers label switched path road construction failure.
The beneficial effect of technical scheme provided by the invention is:
Utilize the topology information of each node storage in the network and the restoration route information of whole the multicast tree that the multicast tree root node is stored, multicast tree is split into some cross-talk routes, initiate signaling concurrently by each cross-talk route and carry out road construction and the sub-label switched path that each section built up is merged into a complete recovery label switched path multicast tree, thus the fast quick-recovery of multicast service in the realization distributed intelligence optical-fiber network.
Description of drawings
Fig. 1 is based on the machine-processed flow chart of the multicast recovery of parallel signaling in the embodiment of the invention;
Fig. 2 is based on the machine-processed exemplary plot of the multicast recovery of parallel signaling in the embodiment of the invention;
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Referring to Fig. 1 and Fig. 2, present embodiment provides in a kind of distributed intelligence optical-fiber network based on the multicast recovery mechanism of parallel signaling, comprising:
Step 1: calculate restoration route, as s-f-h-i-e and the h-c-d among Fig. 2 (b);
Step 2: this route is divided by branch node h, and every section as a sub-route, and as shown in Fig. 2 (b), restoration route is divided into three sections, is respectively s-f-h, h-i-e and h-c-d;
Step 3: as the component node, terminal point is as the node of specific item with the starting point of every cross-talk route, and in Fig. 2 (b), the starting point of three cross-talk routes is respectively s, h and h, and terminal point is respectively h, e and d;
Step 4: every cross-talk route is initiated signaling respectively concurrently by the component node and is carried out road construction, and sub-label switched path is set up in segmentation concurrently;
Step 5:, constitute a complete recovery label switched path multicast tree if the equal road construction success of each cross-talk label switched path then merges all sub-label switched paths.
Present embodiment is directly set up sub-label switched path concurrently by each the cross-talk route in the restoration route, and with complete recovery label switched path multicast tree of each sub-label switched path merging formation, thereby realized the fast quick-recovery of multicast service in the distributed intelligence optical-fiber network, improved the efficient of business recovery in the distributed intelligence optical-fiber network.
The embodiment of the invention can realize that corresponding software can be stored in the storage medium that can read, for example in the hard disk of computer, CD or the floppy disk by software.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
- In the distributed intelligence optical-fiber network based on the multicast recovery mechanism of parallel signaling, it is characterized in that comprising the steps:Because the topology information that each node has all been stored network in the distributed intelligence optical-fiber network, the root node of multicast tree has been stored the routing iinformation of whole multicast tree, make full use of this characteristics, restoration route with multicast tree in this mechanism carries out segmentation by branch node, every section as a sub-route, as the component node, terminal point is as the node of specific item with the starting point of every cross-talk route;Every cross-talk route is initiated signaling respectively concurrently by the component node and is carried out road construction, and sub-label switched path is set up in segmentation concurrently;If each cross-talk label switched path is all set up success, just all sub-label switched paths are merged, constitute one section complete recovery label switched path, thereby the fast quick-recovery of multicast tree is achieved.
- 2. the branch node of multicast tree according to claim 1 is characterized in that:Multicast tree is divided into the node of each subtree.
- 3. sub-route according to claim 1 is characterized in that:The route that constitutes by the separated every section path of branch node.
- 4. sub-label switched path according to claim 1 is characterized in that:The label switched path that constitutes by the separated every section path of branch node.
- 5. the signaling of initiating concurrently according to claim 1 is carried out road construction, it is characterized in that:Every cross-talk label switched path is established concurrently, and all sub-label switched paths are merged into a complete label switched path multicast tree afterwards.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113556281A (en) * | 2020-04-23 | 2021-10-26 | 中兴通讯股份有限公司 | Rerouting method and device, electronic equipment and computer readable medium |
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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 |
| CN101192959A (en) * | 2006-11-28 | 2008-06-04 | 中兴通讯股份有限公司 | A recovery method for multicast service connection in automatic switching optical network |
| WO2008144927A1 (en) * | 2007-06-01 | 2008-12-04 | Nortel Networks Limited | Distributed connection establishment and restoration |
| WO2009033104A1 (en) * | 2007-09-06 | 2009-03-12 | Infinera Corporation | Traffic re-route for optical add-drop multiplexer |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101192959A (en) * | 2006-11-28 | 2008-06-04 | 中兴通讯股份有限公司 | A recovery method for multicast service connection in automatic switching optical network |
| WO2008144927A1 (en) * | 2007-06-01 | 2008-12-04 | Nortel Networks Limited | Distributed connection establishment and restoration |
| WO2009033104A1 (en) * | 2007-09-06 | 2009-03-12 | Infinera Corporation | Traffic re-route for optical add-drop multiplexer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113556281A (en) * | 2020-04-23 | 2021-10-26 | 中兴通讯股份有限公司 | Rerouting method and device, electronic equipment and computer readable medium |
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Application publication date: 20111019 |