CN102014033A - Method and system for restoring services of fault nodes in ring network - Google Patents
Method and system for restoring services of fault nodes in ring network Download PDFInfo
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- CN102014033A CN102014033A CN2010105865705A CN201010586570A CN102014033A CN 102014033 A CN102014033 A CN 102014033A CN 2010105865705 A CN2010105865705 A CN 2010105865705A CN 201010586570 A CN201010586570 A CN 201010586570A CN 102014033 A CN102014033 A CN 102014033A
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Abstract
The invention provides a method and a system for restoring services of fault nodes in a ring network, and relates to the field of communication to solve the problem of service interruption. The method comprises the following steps of: detecting a restoration condition of TMS between a fault node and adjacent nodes on two sides through the fault node in the ring network; and initiating the restoration from a protection path to a work path after the TMS between the fault node and the adjacent nodes on the two sides are restored to be normal. The technical scheme is suitable for a multi-label protocol exchange ring network.
Description
Technical field
The present invention relates to the communications field, relate in particular to the method and system that a kind of ring network fault node is realized business recovery.
Background technology
Present transmission multi-label protocol exchange (T-MPLS) looped network protection technology is used commonplace in carrier network, and its advantage has more obtained affirming of service provider and operator in large-scale network application.The T-MPLS looped network relates to the two-tier network structure: (T-MPLS Section, TMS) (T-MPLS Path TMP), hereinafter abbreviates TMS layer and TMP layer respectively as to T-MPLS section layer with the T-MPLS passage layers.The TMP layer is considered to the client layer of TMS.The TMS layer can be used for monitoring the connectedness between the adjacent node.A very big advantage of T-MPLS looped network protection just is; can dispose a plurality of TMP layers tunnel on the ring of a T-MPLS; these TMP layer tunnels need not to enable T-MPLS OAM and detect; detect and only need rely on the TMS layer to enable T-MPLS OAM; the business that just can finish TMP layer tunnel is switched; significantly reduce the quantity of detection messages on the network, save bandwidth, improve the service quality of network.
Typical T-MPLS ring network structure as shown in Figure 1; on physical link, connect into ring by multiple devices; every equipment can be referred to as a node; under the intact unimpeded situation of operating path; service traffics all are to pass through from operating path; but when fault happens in operational; will be by APS (the Automatic Protection Switching of T-MPLS looped network; APS) agreement is finished by the switching of operating path to the protection path; make service traffics all switch on the protection path, and do not influence the unimpeded of network.
The situation that a kind of fault happens in operational is arranged is such: the east orientation TMS of a certain node (being called intermediate node) of operating path is (with the internodal TMS of east orientation, the east orientation node is the adjacent node of intermediate node one side) and the west to TMS (with the west to internodal TMS, the west is the adjacent node of intermediate node opposite side to node) on the different business board of the intranodal that mediates, this intermediate node is owing to the fault outage is restarted, behind the intermediate node system restoration, can not recover again to the business board at TMS place the same time in the business board at east orientation TMS place and west, and this has just drawn following problem:
Suppose that east orientation TMS place business board recovers earlier; just represent that also east orientation TMS has recovered earlier; the APS module of that intermediate node will send the APS message to east orientation TMS adjacent node earlier; notice east orientation TMS adjacent node switches to operating path; just return to operating path by the protection path earlier with the internodal business of east orientation like this; and also be in the protection path to internodal professional this moment with the west, caused service disconnection.
Summary of the invention
The invention provides a kind of ring network fault node and realize the method and system of business recovery, solved the problem of service disconnection.
A kind of ring network fault node is realized the method for business recovery, comprising:
Malfunctioning node in the looped network detects the recovery situation of the TMS between this node and both sides adjacent node;
Detect TMS between described malfunctioning node and described both sides adjacent node all recover normal after, initiate business by of the recovery of protection path to operating path.
Preferably, the recovery situation that detects the TMS between this node and both sides adjacent node of the malfunctioning node in the described looped network comprises:
The working condition of the TMS corresponding service plate between detection and described both sides adjacent node;
After the equal operate as normal of described business board, determine with the both sides adjacent node between TMS recover normally.
Preferably, the working condition of the TMS corresponding service plate between described detection and described both sides adjacent node is specially:
The APS module of described malfunctioning node is inquired about the working condition of the TMS corresponding service plate between the adjacent node of described both sides to the CPU of this malfunctioning node.
Preferably, detect TMS between described malfunctioning node and described both sides adjacent node all recover normal after, initiate business be may further comprise the steps by the recovery of protection path to operating path:
Detect TMS between described malfunctioning node and described both sides adjacent node all recover normal after, stop to detect the operating state of described business board;
Send the APS message to described both sides adjacent node respectively, indicate described adjacent node that business is recovered back operating path by the protection path.
Preferably, the malfunctioning node in the described looped network detects before the step of recovery situation of the TMS between this node and both sides adjacent node, also comprises:
When malfunctioning node found that this node breaks down, the business between initiation and the described both sides adjacent node was by operating path switching to the protection path.
The present invention also provides a kind of ring network fault node to realize the system of business recovery, comprising:
Local checkout gear is used for after node breaks down, and detects the recovery situation of the TMS between this node and both sides adjacent node;
The business recovery device, be used for detect and described both sides adjacent node between TMS all recover normal after, initiate business by of the recovery of protection path to operating path.
Preferably, described local checkout gear comprises:
The business board detecting unit, be used to detect and described both sides adjacent node between the working condition of TMS corresponding service plate;
TMS recovery situation identifying unit is used for after described business board detecting unit detects the equal operate as normal of described business board, determine with the both sides adjacent node between TMS recover normally.
Preferably, described business recovery device comprises:
Detect abort unit, be used for after detecting TMS between described malfunctioning node and described both sides adjacent node and all recovering normally, stopping to detect the operating state of described business board;
The APS packet sending unit is used for sending the APS message to described both sides adjacent node respectively, indicates described adjacent node that business is recovered back operating path by the protection path.
Preferably, above-mentioned ring network fault node is realized the system of business recovery, also comprises:
Changeover apparatus is used for when finding that this node breaks down, and the business between initiation and the described both sides adjacent node is by operating path switching to the protection path.
The invention provides a kind of ring network fault node and realize the method and system of business recovery; malfunctioning node in the looped network detects the recovery situation of the TMS between this node and both sides adjacent node; detect TMS between described malfunctioning node and described both sides adjacent node all recover normal after; business is recovered back operating path by the protection path; realized after the TMS between malfunctioning node and the both sides adjacent node all recovers, again business recovery being returned operating path, solved the asynchronous problem that causes service disconnection of recovering.
Description of drawings
Fig. 1 is typical T-MPLS ring network structure schematic diagram;
A kind of ring network fault node that Fig. 2 provides for embodiments of the invention one is realized the flow chart of the method for business recovery;
A kind of ring network fault node that Fig. 3 provides for embodiments of the invention two is realized the flow chart of the method for business recovery;
A kind of ring network fault node that Fig. 4 provides for embodiments of the invention is realized the structural representation of the system of business recovery;
Fig. 5 is the internal structure schematic diagram of local checkout gear 401;
Fig. 6 is the internal structure schematic diagram of business recovery device 402;
A kind of ring network fault node that Fig. 7 provides for another embodiment of the present invention is realized the structural representation of the system of business recovery.
Embodiment
After malfunctioning node breaks down and restarts recovery; if with the internodal TMS of east orientation and not synchronous to internodal TMS with the west; for example east orientation TMS place business board (being designated hereinafter simply as the east orientation business board) recovers earlier; just represent that also east orientation TMS has recovered earlier; the APS module of malfunctioning node will send the APS message to east orientation TMS adjacent node earlier so; notice east orientation TMS adjacent node switches to operating path; just return to operating path by the protection path earlier with the internodal business of east orientation like this; and also be in the protection path to internodal professional this moment with the west, caused service disconnection.Also recovered to TMS place business board (being designated hereinafter simply as the west to business board) up to the west, malfunctioning node sends the APS message to node westwards again, and operating path is also returned business recovery to node in the notice west, and business could recover normal.If east orientation business board and west differ bigger to business board recovery time, time of service interruption is just long so, has a strong impact on network communication.
In order to address the above problem; embodiments of the invention provide a kind of ring network fault node to realize the method for business recovery; node in the operating path of T-MPLS looped network breaks down behind the power-off restarting; periodically send the CPU of query message by the APS module to malfunctioning node; east orientation business board in the inquiry T-MPLS looped network in the fault website and west are to the recovery situation of business board; and the answer of cpu cycle property responds the module to APS; inform APS module east orientation business board and west current recovery situation to business board; receive that up to APS response message that CPU sends shows that east orientation business board and west all reach the standard grade to business board; then stop to send query message to CPU; then according to normal APS agreement flow process; send the APS message to east orientation node and west to node simultaneously, notice east orientation node and west are recovered back operating path with business by the protection path to node.
Hereinafter will be elaborated to embodiments of the invention in conjunction with the accompanying drawings.Need to prove that under the situation of not conflicting, embodiment among the application and the feature among the embodiment be combination in any mutually.
The method that embodiments of the invention one provide a kind of ring network fault node to realize business recovery, the flow process of using this method to finish malfunctioning node and both sides to believe operating path recovery between node comprises as shown in Figure 2:
In this step, the malfunctioning node in the T-MPLS looped network is owing to the fault power-off restarting, and the business between malfunctioning node and both sides adjacent node is switched to the protection path by the operating path in the TMS protection group.
Concrete, switch by the APS module in the node and finish.
Malfunctioning node in step 202, the looped network detects the recovery situation of the TMS between this node and both sides adjacent node;
In this step; after the system of malfunctioning node restarts; the working condition of the TMS corresponding service plate between detection and described both sides adjacent node; concrete; APS module in the malfunctioning node is according to the TMS protection group that presets; determine operating path corresponding service plate, periodically send query message, inquire about the east orientation business board of T-MPLS looped network in this node and west to the business board recovery situation to CPU.
After the equal operate as normal of described business board, promptly determine with the both sides adjacent node between TMS recover normally
In the embodiment of the invention; CPU is after the query message that receives an APS module transmission; promptly reply response message to the APS module; inform APS module east orientation business board and west work at present state to business board; all recover just often to business board in the east orientation business board and the west of the operating path correspondence in the TMS protection group that shows the T-MPLS looped network in the response message of the CPU transmission that the APS module is received; the APS module stops to send query message to CPU; and send the APS message to described both sides adjacent node respectively, indicate described adjacent node that business is recovered back operating path by the protection path.
Below in conjunction with accompanying drawing, embodiments of the invention two are described.
The method that embodiments of the invention two provide a kind of ring network fault node to realize business recovery, the flow process of using this method to finish malfunctioning node and both sides to believe operating path recovery between node comprises as shown in Figure 3:
Node in step 301, the T-MPLS looped network breaks down, the malfunctioning node power-off restarting;
The service traffics of step 302, two side gussets adjacent with malfunctioning node switch to the protection path by operating path;
Whether step 303, inspection malfunctioning node system are recovered normally, if do not recover, then the T-MPLS looped network protection is according to normal flow, and the service traffics between malfunctioning node and its both sides adjacent node are in the protection path always; If it is normal that malfunctioning node recovers, then forward step 304 to;
Concrete, the APS module in the malfunctioning node is the cycle to send query message to CPU with 10ms, whether the east orientation business board and the west of operating path correspondence all recover normal to business board in the TMS protection group of inquiry T-MPLS looped network protection.
CPU responds response message, informs APS module east orientation business board and the west recovery situation to business board, if there is not full recovery, then the APS module continues to send query message to CPU; If east orientation business board and west have all recovered normally then to forward step 305 to business board;
Embodiments of the invention also provide a kind of ring network fault node to realize the system of business recovery, and structure comprises as shown in Figure 4:
Concrete, the structure of described local checkout gear 401 comprises as shown in Figure 5:
Business board detecting unit 4011, be used to detect and described both sides adjacent node between the working condition of TMS corresponding service plate;
TMS recovery situation identifying unit 4012 is used for after described business board detecting unit 4011 detects the equal operate as normal of described business board, determine with the both sides adjacent node between TMS recover normally.
Concrete, the structure of described business recovery device 402 comprises as shown in Figure 6:
Detect abort unit 4021, be used for after detecting TMS between described malfunctioning node and described both sides adjacent node and all recovering normally, stopping to detect the operating state of described business board;
APS packet sending unit 4022 is used for sending the APS message to described both sides adjacent node respectively, indicates described adjacent node that business is recovered back operating path by the protection path.
Preferably, the system of above-mentioned ring network fault node realization business recovery also comprises as shown in Figure 7:
Above-mentioned ring network fault node is realized the system of business recovery; can realize that the method for business recovery combines with a kind of ring network fault node that embodiments of the invention provide; malfunctioning node in the looped network detects the recovery situation of the TMS between this node and both sides adjacent node; detect TMS between described malfunctioning node and described both sides adjacent node all recover normal after; business is recovered back operating path by the protection path; realized after the TMS between malfunctioning node and the both sides adjacent node all recovers, again business recovery being returned operating path, solved the asynchronous problem that causes service disconnection of recovering.
The CPU of malfunctioning node according to the TMS protection group of looped network can inquire with east orientation TMS and west to the corresponding east orientation business board of TMS and west to business board; when the malfunctioning node of operating path because the fault power-off restarting; behind the system restoration; the APS module is notified to adjacent node before it returns to operating path by the protection path sending the APS message; earlier to cpu cycle property transmission query message; cycle is 10ms; inquiry east orientation business board and west are to the recovery situation of business board; after CPU receives query message; reply response message and give the APS module, inform APS module east orientation business board and west recovery situation to business board.Receive up to the APS module and to show in the response message of CPU that east orientation business board and west are to the business board full recovery; stop to send query message to CPU; and send the APS message to east orientation node and west to node immediately, notice both sides adjacent node returns to operating path with business by the protection path.East orientation node and west are shortened by the time difference that the protection path returns to operating path greatly to node like this, also just greatly reduce professional recovery time, have avoided service disconnection.
The all or part of step that the one of ordinary skill in the art will appreciate that the foregoing description program circuit that can use a computer is realized, described computer program can be stored in the computer-readable recording medium, described computer program (as system, unit, device etc.) on the relevant hardware platform is carried out, when carrying out, comprise one of step or its combination of method embodiment.
Alternatively, all or part of step of the foregoing description also can use integrated circuit to realize, these steps can be made into integrated circuit modules one by one respectively, perhaps a plurality of modules in them or step is made into the single integrated circuit module and realizes.Like this, the present invention is not restricted to any specific hardware and software combination.
Each device/functional module/functional unit in the foregoing description can adopt the general calculation device to realize, they can concentrate on the single calculation element, also can be distributed on the network that a plurality of calculation element forms.
Each device/functional module/functional unit in the foregoing description is realized with the form of software function module and during as independently production marketing or use, can be stored in the computer read/write memory medium.The above-mentioned computer read/write memory medium of mentioning can be a read-only memory, disk or CD etc.
Anyly be 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 described protection range of claim.
Claims (9)
1. the method for a ring network fault node realization business recovery is characterized in that, comprising:
Malfunctioning node in the looped network detects the recovery situation of the transmission multi-label protocol exchange section layer (TMS) between this node and both sides adjacent node;
Detect TMS between described malfunctioning node and described both sides adjacent node all recover normal after, initiate business by of the recovery of protection path to operating path.
2. ring network fault node according to claim 1 is realized the method for business recovery, it is characterized in that the recovery situation that the malfunctioning node in the described looped network detects the TMS between this node and both sides adjacent node comprises:
The working condition of the TMS corresponding service plate between detection and described both sides adjacent node;
After the equal operate as normal of described business board, determine with the both sides adjacent node between TMS recover normally.
3. ring network fault node according to claim 2 is realized the method for business recovery, it is characterized in that the working condition of the TMS corresponding service plate between described detection and described both sides adjacent node is specially:
The APS of described malfunctioning node (APS) module is inquired about the working condition of the TMS corresponding service plate between the adjacent node of described both sides to the CPU of this malfunctioning node.
4. ring network fault node according to claim 2 is realized the method for business recovery; it is characterized in that; detect TMS between described malfunctioning node and described both sides adjacent node all recover normal after, initiate business be may further comprise the steps by the recovery of protection path to operating path:
Detect TMS between described malfunctioning node and described both sides adjacent node all recover normal after, stop to detect the operating state of described business board;
Send the APS message to described both sides adjacent node respectively, indicate described adjacent node that business is recovered back operating path by the protection path.
5. ring network fault node according to claim 1 is realized the method for business recovery, it is characterized in that, the malfunctioning node in the described looped network detects before the step of recovery situation of the TMS between this node and both sides adjacent node, also comprises:
When malfunctioning node found that this node breaks down, the business between initiation and the described both sides adjacent node was by operating path switching to the protection path.
6. the system of a ring network fault node realization business recovery is characterized in that, comprising:
Local checkout gear is used for after node breaks down, and detects the recovery situation of the TMS between this node and both sides adjacent node;
The business recovery device, be used for detect and described both sides adjacent node between TMS all recover normal after, initiate business by of the recovery of protection path to operating path.
7. ring network fault node according to claim 6 is realized the system of business recovery, it is characterized in that described local checkout gear comprises:
The business board detecting unit, be used to detect and described both sides adjacent node between the working condition of TMS corresponding service plate;
TMS recovery situation identifying unit is used for after described business board detecting unit detects the equal operate as normal of described business board, determine with the both sides adjacent node between TMS recover normally.
8. ring network fault node according to claim 7 is realized the system of business recovery, it is characterized in that described business recovery device comprises:
Detect abort unit, be used for after detecting TMS between described malfunctioning node and described both sides adjacent node and all recovering normally, stopping to detect the operating state of described business board;
The APS packet sending unit is used for sending the APS message to described both sides adjacent node respectively, indicates described adjacent node that business is recovered back operating path by the protection path.
9. ring network fault node according to claim 6 is realized the system of business recovery, it is characterized in that this system also comprises:
Changeover apparatus is used for when finding that this node breaks down, and the business between initiation and the described both sides adjacent node is by operating path switching to the protection path.
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| CN201010586570.5A CN102014033B (en) | 2010-12-13 | 2010-12-13 | Method and system for restoring services of fault nodes in ring network |
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| CN201010586570.5A CN102014033B (en) | 2010-12-13 | 2010-12-13 | Method and system for restoring services of fault nodes in ring network |
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| CN102014033B CN102014033B (en) | 2015-04-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102291310A (en) * | 2011-08-24 | 2011-12-21 | 中兴通讯股份有限公司 | Method and device for improving T-MPLS link ring network protection switching performance |
| WO2013037248A1 (en) * | 2011-09-13 | 2013-03-21 | 中兴通讯股份有限公司 | Ring network protection group link switchback method and device |
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| CN101425971A (en) * | 2008-12-02 | 2009-05-06 | 中兴通讯股份有限公司 | T-MPLS path layer tunnel switching method |
| CN101478421A (en) * | 2008-12-05 | 2009-07-08 | 中兴通讯股份有限公司 | OAM packet timing processing system and method |
| CN101702658A (en) * | 2009-11-24 | 2010-05-05 | 中兴通讯股份有限公司 | Implement method of ring network protection and system thereof |
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2010
- 2010-12-13 CN CN201010586570.5A patent/CN102014033B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101425971A (en) * | 2008-12-02 | 2009-05-06 | 中兴通讯股份有限公司 | T-MPLS path layer tunnel switching method |
| CN101478421A (en) * | 2008-12-05 | 2009-07-08 | 中兴通讯股份有限公司 | OAM packet timing processing system and method |
| CN101702658A (en) * | 2009-11-24 | 2010-05-05 | 中兴通讯股份有限公司 | Implement method of ring network protection and system thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102291310A (en) * | 2011-08-24 | 2011-12-21 | 中兴通讯股份有限公司 | Method and device for improving T-MPLS link ring network protection switching performance |
| CN102291310B (en) * | 2011-08-24 | 2017-04-26 | 中兴通讯股份有限公司 | Method and device for improving T-MPLS link ring network protection switching performance |
| WO2013037248A1 (en) * | 2011-09-13 | 2013-03-21 | 中兴通讯股份有限公司 | Ring network protection group link switchback method and device |
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