CN1808988A - Method of implementing synchronization of topology resource information between bearer networks - Google Patents
Method of implementing synchronization of topology resource information between bearer networks Download PDFInfo
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- CN1808988A CN1808988A CNA2005100023733A CN200510002373A CN1808988A CN 1808988 A CN1808988 A CN 1808988A CN A2005100023733 A CNA2005100023733 A CN A2005100023733A CN 200510002373 A CN200510002373 A CN 200510002373A CN 1808988 A CN1808988 A CN 1808988A
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Abstract
This invention relates to one load network topological materials simultaneous realization method, which comprises the following steps: When meeting set conditions, the load net relative load manager servo sends topological materials information to the relative load net; then the said load net relative manager servo receives the said topological materials information to update local topological materials information according to the received materials information. This invention ensures each load network relative CM near topological materials to realize simultaneous process ad the reliability of outside linkage.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to the synchronous implementation method of a kind of topology resource information between bearer networks.
Background technology
Along with the development of Internet (the Internet) technology, and the quick growth of user's request, various multi-media network services are fallen over each other to emerge in large numbers.The multimedia service that occurs in the network a large amount of bandwidth resources in the network that will account for.Therefore, when sudden high FTP (file transfer protocol (FTP)) being arranged on the network or contain the business such as HTTP (HTML (Hypertext Markup Language)) of image file, the real time business comparatively responsive to characteristics such as network transfer delay, delay jitters will be subjected to very big influence; And then the key business that causes needing in the network to guarantee is difficult to be transmitted reliably.For this reason, various QoS technology are arisen at the historic moment.For satisfying the demand of QoS, IETF has advised a lot of service models and mechanism.
The industry more application is to use integrated service model (Int-Serv) at the access and the edge of network at present, uses differentiated service model (Diff-serv) at server.Because differentiated service model (Diff-serv) is only set priority level and ensured the QoS measure, therefore, corresponding QoS ensures that effect is difficult to prediction.For this reason, industry begins to introduce an independently bearer control layer for backbone network differentiated service Diff-Serv, set up the special Diff-Serv qos signaling mechanism of a cover, just set up a resource management layer specially for Differentiated Services Diff-Serv network, the topological resource of supervising the network, being called for this resource management Differentiated Services Diff-Serv mode has the Diff-Serv of independent bearing control layer model.
In the Differentiated Services of bearer control layer (Diff-Serv) model is arranged independently, load network resource manager has disposed rule and network topology in { comprising bandwidth broker device (Bandwidth Broker) or QoS server/explorer }, is used to client's service bandwidth application Resources allocation.As shown in Figure 1, the bearer network Control Server of each management domain transmits client's service bandwidth application request and result each other by signaling, and load network resource manager be the routing information of professional application distribution, or the like.Normally each CN (nucleus equipment) that goes up to bearer network at CM (load network resource manager) simulates a routing table, and pathfinding in the territory of each CM realizes professional route in the realization bearer control layer.Resource request of each concrete type of service (being concrete Business Stream) and a series of LSP (label switched path) binding promptly utilize the resource of corresponding LSP to be, when calling is finished, LSP and other resource are discharged again.
Concrete processing procedure is: when the service bandwidth application of bearer control layer process user, will determine the path of customer service.Load network resource manager can notify edge router to transmit Business Stream according to the path of appointment.Bearer network utilizes MPLS (multiprotocol label switching) technology usually, use the resource reservation mode to set up LSP, use the demonstration routing mechanism of RSVP-TE (RSVP-traffic engineering) or CR-LDP (limited tag distribution protocol) to set up LSP end to end along the service flow path of bearer control layer appointment.
At the different or identical QoS algorithm of the inner use of each CM of each bearer network correspondence, the bearing bed of being administered carries out professional route and resource is calculated for the business connection is calculated, and selects the optimal path of this business of being suitable for connection.Described professional route is meant that CM is according to IP address in the territory of its management, ER (edge router), BR (border router) topology, LSP resource and the IP address that goes out the territory in the territory, the BR of adjacency, CM topology, go out territory LSP resource, for carrying out professional routing, determine LSP in the territory of Business Stream, go out territory LSP from CA (Call Agent) or in abutting connection with the service connection request of CM.
Therefore, in CM, need to preserve the bearer network nodal information of oneself administering, information and LSP information as the CN node, the information of described CN node comprises: IP address, state (activation), communication protocol type and other attribute, described LSP information comprises: label, state and other attribute.On the bearer network plane, be to link to each other between each territory by LSP.
In addition, respectively administer between the territory at the bearer network control plane and to connect by LSP, therefore also need to preserve adjacent CN nodal information and the information of LSP in CM inside, and described CN node and LSP have clear and definite administration ownership, promptly belong to different CM respectively, so the inconsistent situation of topology resource information between different CM, may occur, at this moment, will cause each CM to determine reliable service path for corresponding business connects.At present, also there is not a kind of method can realize the reliable synchronization of the topology resource information between each CM of each bearer network correspondence, the inconsistency that is the topology resource information of adjacency between each CM can't be avoided, and therefore, just can't guarantee that also each CM can select reliable optimal path for business connects.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide the synchronous implementation method of a kind of topology resource information between bearer networks, can realize synchronously with the topology resource information of adjacency between the CM that guarantees each bearer network correspondence, and then improve the reliability of CM routing.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides the synchronous implementation method of a kind of topology resource information between bearer networks, comprising:
A, when meeting predetermined condition, the load network resource manager of bearer network correspondence sends topology resource information to the load network resource manager of the bearer network correspondence that is adjacent;
The load network resource manager of B, the described bearer network correspondence that is adjacent receives described topology resource information, and upgrades local topology resource information according to the topology resource information of receiving.
The synchronous implementation method of described topology resource information between bearer networks also comprises:
C, in load network resource manager, preserve the topology resource information of the bearer network of its administration.
Described step C comprises:
Dispose the topology resource information of the bearer network of load network resource manager administration by manual mode;
Perhaps, obtain the topology resource information of the bearer network of its administration by the nucleus equipment querying node in bearer network by load network resource manager.
Described topology resource information comprises:
Label switching path LSP information between adjacent bearer network, and the nucleus equipment CN nodal information at LSP two ends.
Among the present invention, the described predetermined condition that meets of steps A comprises:
The topology resource information of the bearer network of receiving when load network resource manager changes, and perhaps during the cycle synchronisation timer expiry, then is defined as meeting predetermined condition.
Described steps A also comprises:
A1, the load network resource manager CN in the bearer network of its administration sends the message of inquiry LSP information, and determines according to the query response message that the CN that receives returns whether described topology resource information changes;
And/or,
A2, break down or during fault recovery, determine according to the message that the CN in the described bearer network reports whether described topology resource information changes when the bearer network of load network resource manager administration.
Described steps A 1 also comprises:
A11, send the message of described inquiry LSP information when load network resource manager after, also start the inquiry timer, when receiving the Query Result that returns, the zero clearing of inquiry timer when the inquiry timer expiry, resends query messages.
Described steps A 11 also comprises:
Described load network resource manager determines that then corresponding topology resource information is unusual if all do not obtain Query Result in the inquiry timer expiry number of times of setting, and the load network resource manager of notice adjacency.
Described steps A comprises:
When the topology resource information of the bearer network of receiving when load network resource manager changes, the topology resource information that load network resource manager changes to the load network resource manager that is adjacent.
Described steps A comprises:
When the cycle synchronisation timer expiry that is provided with, load network resource manager sends the topology resource information of adjacency to the load network resource manager that is adjacent.
As seen from the above technical solution provided by the invention, the invention provides that the topological resource of adjacency realizes synchronous technical scheme between a kind of CM of practicable each bearer network correspondence, the topology resource information that guarantees adjacency between the CM of each bearer network correspondence can realize synchronously, and then improved CM and be the professional reliability that connects the path of selecting.That is to say that realization of the present invention makes CM to provide accurate, real-time topological path and resource information for application, modification and the release that business connects, thereby has improved the practicality of whole bearer network.
Description of drawings
Fig. 1 is bearer control layer network model schematic diagram independently;
Fig. 2 is the networking structure schematic diagram between bearer network;
Fig. 3 is the process chart of method of the present invention.
Embodiment
The present invention is when there is a plurality of CM (load network resource manager) interconnection networking in the carrying control plane, information between each CM is carried out alternately automatically based on the communication protocol between CM, realize resource informations such as the information of CN node between the different CM and LSP information synchronously, the bearer network information on each CM that guarantees can be consistent, thereby make the resource request operation that connects in the enterprising industry affair of different CM, as application, modification and release etc., can carry out topological path and resource more fast and accurately and calculate.
At the different or identical QoS algorithm of the inner use of each CM of each bearer network correspondence, the bearing bed of being administered carries out professional route and resource is calculated for the business connection is calculated, and selects the optimal path of this business of being suitable for connection.Because in the inner information that needs to keep adjacent C N node and LSP of CM, and described CN and LSP information have clear and definite administration ownership, so between different CM, need, guarantee the unanimity of these bearer network topology state informations of adjacent C M the inside by synchronization mechanism.
Among the present invention, relate generally to for CN between adjacent bearer network and LSP information and carry out Synchronous Processing, therefore, CN that the present invention is mentioned and LSP are CN and LSP between territory between the different CM.
As shown in Figure 2, three management domains among the figure, be that CM management domain A, B, C are respectively by CM1, CM2, CM3 administration, CN1, CN2, CN3, CN4 and the CN5 of (promptly in abutting connection with) totally five edge devices in the described bearer network between existence domain, and LSP12, LSP21, LSP34 and LSP53 totally four paths.Certainly, during actual networking, in bearer network, may have more CN and LSP.In Fig. 2, for satisfying the needs that professional route and resource are calculated, then need to guarantee CN1 and CN2 and LSP12 and LSP21 on CM1 and CM2 information synchronously, simultaneously, need also to guarantee that CM2 and CM3 go up CN3, CN4 and the CN5 that preserves, and the information synchronization of LSP34 and LSP53.
Being arranged in the CN of CM and the state information of LSP is according to initial configuration, and with bearer network in the acquisition of communicating by letter of actual CN node, the communication protocol that adopts between CM and CN can be SNMP (simple NMP) or other communication protocol.
The LSP that passes through multihop network equipment is in existing MPLS OAM (operation management maintain of multiprotocol label switching) technology, the two ends of LSP can provide real-time very high state information, if variation has taken place the LSP state that network failure/recovery causes, corresponding CN can initiatively report the described LSP state that changes to affiliated CM.
Therefore, the mutual realization that also needs to carry out between each CM synchronously CN and LSP state information of the CN of CM1, CM2 shown in Figure 2, the adjacency between CM3 and LSP.
For the present invention there being further understanding, below will be in conjunction with the accompanying drawings to the specific implementation of method of the present invention.
As shown in Figure 3, method of the present invention may further comprise the steps in the specific implementation process:
Step 31: the topology resource information on CM in its compass of competency of configuration, described topology resource information CN node and LSP information;
Described LSP information comprises attribute informations such as the state of LSP and bandwidth;
Mode in configuration CN node and LSP information on the CM has two kinds: a kind of is as CM during not with the CN inter-node communication of bearer network, then adopt the manual mode that is provided with the CM configuration need CN node or LSP information; Another kind is that then CM carries out the inquiry of LSP information to bearer network corresponding C N node, the perhaps information inquiry of physics CN node when CM can communicate with the CN node of bearer network;
In the above-mentioned second way, can also start the inquiry timer, when the inquiry timer expiry, do not receive the Query Result that returns, then resend query requests, certainly, if in the number of times of setting, all can't obtain Query Result, then report error message, promptly notify communication abnormality between upper strata or administrative staff's bearer network CN and CM;
Step 32: after CM receives the topology resource information that the CN in the bearer network sends, change, then the topology resource information that changes to the load network resource manager of adjacency if find the topology resource information between the CM territory;
The load network resource manager of described adjacency is meant the CM that relates to according to topology resource information between the territory that changes, as shown in Figure 2, if change if the load network resource manager CM2 of CM management domain B finds the information of LSP34 or LSP53, the topology resource information that changes to CM3 then, if the information of LSP12 or LSP21 of finding changes, then the topology resource information that changes to CM1;
Described CM can receive the topology resource information that bearer network is sent usually in both cases:
(1) CM is after the CN of bearer network sends query requests, with the query response message of receiving that CN sends, result according to inquiry response can determine promptly whether topology resource information changes, if the inquiry timer expiry repeatedly, it is unusual to determine that then corresponding topological resource occurs, and will the CM of the topology resource information notice adjacency of unusual adjacency occur;
(2) break down or fault recovery the time when the bearer network of CM administration, CM will receive the message that CN node that the CN node is sent or LSP information change;
Step 33: the CM of adjacency upgrades local corresponding topology resource information according to behind the topology resource information of receiving that changes according to described topology resource information.
The present invention can also CM to be provided with synchro timer overtime, still as shown in Figure 3, referring to step 34, when synchro timer is overtime, then CM is according to the protocol type of configuration, with the CM of the topology resource information between the territory of CM administration based on corresponding protocol type notification adjacency; Afterwards, the CM of adjacency receives described topology resource information, and execution in step 35, and promptly the CM of described adjacency will upgrade the topology resource information of local adjacency according to the topology resource information of receiving.
Realization of the present invention, application, modification and release for business connects provide accurate, real-time topological path and resource information, have improved the practicality of whole network.
Method provided by the invention can also be applied to the non-adjacent topology resource information of synchronous bearer net explorer.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, the synchronous implementation method of a kind of topology resource information between bearer networks is characterized in that, comprising:
A, when meeting predetermined condition, the load network resource manager of bearer network correspondence sends topology resource information to the load network resource manager of the bearer network correspondence that is adjacent;
The load network resource manager of B, the described bearer network correspondence that is adjacent receives described topology resource information, and upgrades local topology resource information according to the topology resource information of receiving.
2, the synchronous implementation method of topology resource information between bearer networks according to claim 1 is characterized in that, this method also comprises:
C, in load network resource manager, preserve the topology resource information of the bearer network of its administration.
3, the synchronous implementation method of topology resource information between bearer networks according to claim 2 is characterized in that, described step C comprises:
Dispose the topology resource information of the bearer network of load network resource manager administration by manual mode;
Perhaps, obtain the topology resource information of the bearer network of its administration by the nucleus equipment querying node in bearer network by load network resource manager.
4, according to claim 1, the synchronous implementation method of 2 or 3 described topology resource information between bearer networks, it is characterized in that described topology resource information comprises:
Label switching path LSP information between adjacent bearer network, and the nucleus equipment CN nodal information at LSP two ends.
According to claim 1, the synchronous implementation method of 2 or 3 described topology resource information between bearer networks, it is characterized in that 5, the described predetermined condition that meets of steps A comprises:
The topology resource information of the bearer network of receiving when load network resource manager changes, and perhaps during the cycle synchronisation timer expiry, then is defined as meeting predetermined condition.
6, the synchronous implementation method of topology resource information between bearer networks according to claim 5 is characterized in that, described steps A also comprises:
A1, the load network resource manager CN in the bearer network of its administration sends the message of inquiry LSP information, and determines according to the query response message that the CN that receives returns whether described topology resource information changes;
And/or,
A2, break down or during fault recovery, determine according to the message that the CN in the described bearer network reports whether described topology resource information changes when the bearer network of load network resource manager administration.
7, the synchronous implementation method of topology resource information between bearer networks according to claim 6 is characterized in that, described steps A 1 also comprises:
A11, send the message of described inquiry LSP information when load network resource manager after, also start the inquiry timer, when receiving the Query Result that returns, the zero clearing of inquiry timer when the inquiry timer expiry, resends query messages.
8, the synchronous implementation method of topology resource information between bearer networks according to claim 7 is characterized in that, described steps A 11 also comprises:
Described load network resource manager determines that then corresponding topology resource information is unusual if all do not obtain Query Result in the inquiry timer expiry number of times of setting, and the load network resource manager of notice adjacency.
9, the synchronous implementation method of topology resource information between bearer networks according to claim 5 is characterized in that, described steps A comprises:
When the topology resource information of the bearer network of receiving when load network resource manager changes, the topology resource information that load network resource manager changes to the load network resource manager that is adjacent.
10, the synchronous implementation method of topology resource information between bearer networks according to claim 5 is characterized in that, described steps A comprises:
When the cycle synchronisation timer expiry that is provided with, load network resource manager sends the topology resource information of adjacency to the load network resource manager that is adjacent.
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| CNB2005100023733A CN100370748C (en) | 2005-01-19 | 2005-01-19 | Method of implementing synchronization of topology resource information between bearer networks |
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| CNB2005100023733A CN100370748C (en) | 2005-01-19 | 2005-01-19 | Method of implementing synchronization of topology resource information between bearer networks |
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| CN1808988A true CN1808988A (en) | 2006-07-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335689B (en) * | 2007-06-26 | 2011-11-02 | 华为技术有限公司 | Traceroute implementing method and equipment |
| CN102594689A (en) * | 2012-02-22 | 2012-07-18 | 中兴通讯股份有限公司 | Distributed network control method and device |
| CN102907052A (en) * | 2012-08-02 | 2013-01-30 | 华为技术有限公司 | Method and device for processing topology information |
| CN104320352A (en) * | 2014-10-31 | 2015-01-28 | 杭州华三通信技术有限公司 | Method and device used for synchronization of VRRP and IGP |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020087699A1 (en) * | 2000-07-31 | 2002-07-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Dynamic QoS management in differentiated services using bandwidth brokers, RSVP aggregation and load control protocols |
| US6876625B1 (en) * | 2000-09-18 | 2005-04-05 | Alcatel Canada Inc. | Method and apparatus for topology database re-synchronization in communications networks having topology state routing protocols |
| CN1279769C (en) * | 2003-02-17 | 2006-10-11 | 华为技术有限公司 | Method for data synchronizing between service control point and home location register |
-
2005
- 2005-01-19 CN CNB2005100023733A patent/CN100370748C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335689B (en) * | 2007-06-26 | 2011-11-02 | 华为技术有限公司 | Traceroute implementing method and equipment |
| CN102594689A (en) * | 2012-02-22 | 2012-07-18 | 中兴通讯股份有限公司 | Distributed network control method and device |
| WO2013123846A1 (en) * | 2012-02-22 | 2013-08-29 | 中兴通讯股份有限公司 | Distributed network control method and device |
| CN102594689B (en) * | 2012-02-22 | 2015-06-10 | 中兴通讯股份有限公司 | Distributed network control method and device |
| CN102907052A (en) * | 2012-08-02 | 2013-01-30 | 华为技术有限公司 | Method and device for processing topology information |
| CN104320352A (en) * | 2014-10-31 | 2015-01-28 | 杭州华三通信技术有限公司 | Method and device used for synchronization of VRRP and IGP |
| CN104320352B (en) * | 2014-10-31 | 2017-10-03 | 新华三技术有限公司 | A kind of method and apparatus synchronous for VRRP and IGP |
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| CN100370748C (en) | 2008-02-20 |
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