CN102014033B - 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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- CN102014033B CN102014033B CN201010586570.5A CN201010586570A CN102014033B CN 102014033 B CN102014033 B CN 102014033B CN 201010586570 A CN201010586570 A CN 201010586570A CN 102014033 B CN102014033 B CN 102014033B
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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, particularly relate to the method and system that a kind of ring network fault node realizes business recovery.
Background technology
Current transmission multi-label protocol exchanges (T-MPLS) looped network protection technology and uses commonplace in the operator network, and its advantage more obtains the affirmative of service provider and operator in large-scale network application.T-MPLS looped network relates to two-tier network structure: T-MPLS section layer (T-MPLS Section, TMS) and T-MPLS passage layers (T-MPLS Path, TMP), hereafter respectively referred to as TMS layer and TMP layer.TMP layer is considered to the client layer of TMS.TMS layer can be used for monitoring the connectedness between adjacent node.The advantage that of T-MPLS looped network protection is very large is just; the ring of a T-MPLS can configure multiple TMP layer tunnel; these TMP layer tunnels detect without the need to enabling T-MPLS OAM; and TMS layer only need be relied on to enable T-MPLS OAM detect; the business that just can complete TMP layer tunnel switches; greatly reduce the quantity of detection messages on network, save bandwidth, improve the service quality of network.
Typical T-MPLS ring network structure as shown in Figure 1; on physical link, ring is connected into by multiple devices; every platform equipment can be referred to as a node; when operating path intact unimpeded; service traffics are all pass through from operating path; but when fault happens in operational; will by the APS of T-MPLS looped network (Automatic Protection Switching; APS) agreement completes by the switching of operating path to Protection path; service traffics are all switched on Protection path, and do not affect the unimpeded of network.
A kind of situation of fault happens in operational is had to be such: the east orientation TMS (TMS internodal with east orientation of a certain node (being called intermediate node) of operating path, east orientation node is the adjacent node of intermediate node side) and west to TMS (with west to internodal TMS, west is the adjacent node of intermediate node opposite side to node) on business board different in the node that mediates, this intermediate node restarts due to fault power-off, after intermediate node System recover, business board and the western business board to TMS place at east orientation TMS place can not recover again the same time, this just drawn below problem:
Suppose that east orientation TMS place business board first recovers; also just represent that east orientation TMS has first recovered; the APS module of that intermediate node first will send APS message to east orientation TMS adjacent node; notice east orientation TMS adjacent node is switched to operating path; just first operating path is returned to by Protection path like this with the internodal business of east orientation; and be now also in Protection path with west to internodal business, cause service disconnection.
Summary of the invention
The invention provides the method and system that a kind of ring network fault node realizes business recovery, solve the problem of service disconnection.
Ring network fault node realizes a method for business recovery, comprising:
Malfunctioning node in looped network detects the recovery situation of the TMS between this node and both sides adjacent node;
Detecting the TMS between described malfunctioning node and described both sides adjacent node all recover normal after, to initiate business by Protection path to the recovery of operating path.
Preferably, the recovery situation of the TMS that the malfunctioning node in described looped network detects between this node and both sides adjacent node comprises:
Detect the working condition of the business board corresponding with the TMS between the adjacent node of described both sides;
After described business board all normally works, to determine and TMS between the adjacent node of both sides recovers normal.
Preferably, the working condition of the business board that the TMS between described detection with described both sides adjacent node is corresponding is specially:
The APS module of described malfunctioning node inquires about the working condition of business board corresponding to TMS between the adjacent node of described both sides to the CPU of this malfunctioning node.
Preferably, detecting that the TMS between described malfunctioning node and described both sides adjacent node all recovers normally, initiating business to be comprised the following steps by the recovery of Protection path to operating path:
Detecting that the TMS between described malfunctioning node and described both sides adjacent node all recovers normally, stop the operating state detecting described business board;
Send APS message respectively to described both sides adjacent node, indicate described adjacent node that business is recovered back operating path by Protection path.
Preferably, the malfunctioning node in described looped network also comprises before detecting the step of the recovery situation of the TMS between this node and both sides adjacent node:
When malfunctioning node finds this nodes break down, the business between initiation with described both sides adjacent node is by operating path switching to Protection path.
Present invention also offers the system that a kind of ring network fault node realizes business recovery, comprising:
Local checkout gear, for after nodes break down, detects the recovery situation of the TMS between this node and both sides adjacent node;
Business recovery device, for detect and TMS between the adjacent node of described both sides all recover normal after, to initiate business by Protection path to the recovery of operating path.
Preferably, described local checkout gear comprises:
Business board detecting unit, for detecting the working condition of the business board corresponding with the TMS between the adjacent node of described both sides;
TMS recovery situation identifying unit, for after described business board detecting unit detects that described business board all normally works, to determine and TMS between the adjacent node of both sides recovers normal.
Preferably, described business recovery device comprises:
Detecting abort unit, for detecting that the TMS between described malfunctioning node and described both sides adjacent node all recovers normally, stopping the operating state detecting described business board;
APS packet sending unit, for sending APS message respectively to described both sides adjacent node, indicates described adjacent node that business is recovered back operating path by Protection path.
Preferably, above-mentioned ring network fault node realizes the system of business recovery, also comprises:
Changeover apparatus, for when finding this nodes break down, the business between initiation with described both sides adjacent node is by operating path switching to Protection path.
The invention provides the method and system that a kind of ring network fault node realizes business recovery; malfunctioning node in looped network detects the recovery situation of the TMS between this node and both sides adjacent node; detecting that the TMS between described malfunctioning node and described both sides adjacent node all recovers normally; business is recovered back operating path by Protection path; again business recovery is returned operating path after the TMS achieved between malfunctioning node and both sides adjacent node all recovers, solve and recover the asynchronous problem causing service disconnection.
Accompanying drawing explanation
Fig. 1 is typical T-MPLS ring network structure schematic diagram;
Fig. 2 realizes the flow chart of the method for business recovery for a kind of ring network fault node that embodiments of the invention one provide;
Fig. 3 realizes the flow chart of the method for business recovery for a kind of ring network fault node that embodiments of the invention two provide;
Fig. 4 realizes the structural representation of the system of business recovery for a kind of ring network fault node that embodiments of the invention provide;
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;
Fig. 7 realizes the structural representation of the system of business recovery for a kind of ring network fault node that another embodiment of the present invention provides.
Embodiment
After malfunctioning node breaks down and restarts recovery, if with the internodal TMS of east orientation with do not have synchronous with west to internodal TMS, such as east orientation TMS place business board (hereinafter referred to as east orientation business board) first recovers, also just represent that east orientation TMS has first recovered, so the APS module of malfunctioning node first will send APS message to east orientation TMS adjacent node, notice east orientation TMS adjacent node is switched to operating path, just first operating path is returned to by Protection path like this with the internodal business of east orientation, and be now also in Protection path with west to internodal business, cause service disconnection.Until west has also been recovered to TMS place business board (hereinafter referred to as west to business board), malfunctioning node has sent APS message to node westwards again, and business recovery is also returned operating path to node by notice west, and business could recover normal.If east orientation business board and west are to business board difference recovery time comparatively greatly, so the time of service disconnection is just long, has a strong impact on network communication.
In order to solve the problem, The embodiment provides a kind of method that ring network fault node realizes business recovery, after nodes break down power-off restarting in the operating path of T-MPLS looped network, query message is periodically sent to the CPU of malfunctioning node by APS module, east orientation business board in inquiry T-MPLS looped network in fault website and the western recovery situation to business board, and cpu cycle property replys response to APS module, inform APS module east orientation business board and the western current recovery situation to business board, until the response message display east orientation business board that APS receives CPU transmission is all reached the standard grade to business board with west, then stop sending query message to CPU, then according to normal APS agreement flow process, send APS message to east orientation node and west to node simultaneously, business is recovered back operating path by Protection path to node by notice east orientation node and west.
Hereinafter will be described in detail to embodiments of the invention by reference to the accompanying drawings.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.
Embodiments of the invention one provide a kind of method that ring network fault node realizes business recovery, and the flow process using the method to complete malfunctioning node and both sides to believe that between node, operating path recovers as shown in Figure 2, comprising:
Step 201, when malfunctioning node finds this nodes break down, initiate with described both sides adjacent node between business by operating path switching to Protection path;
In this step, the malfunctioning node in T-MPLS looped network is due to fault power-off restarting, and the business between malfunctioning node and both sides adjacent node is switched to Protection path by the operating path in TMS protection group.
Concrete, switch and completed by the APS module in node.
Malfunctioning node in step 202, looped network detects the recovery situation of the TMS between this node and both sides adjacent node;
In this step; after the system reboot of malfunctioning node; detect the working condition of the business board corresponding with the TMS between the adjacent node of described both sides; concrete; APS module in malfunctioning node is according to preset TMS protection group; determine the business board that operating path is corresponding, periodically send query message to CPU, inquire about the east orientation business board of T-MPLS looped network in this node and west to business board recovery situation.
After described business board all normally works, namely to determine and TMS between the adjacent node of both sides recovers normal
Step 203, detecting the TMS between described malfunctioning node and described both sides adjacent node all recover normal after, to initiate business by Protection path to the recovery of operating path;
In the embodiment of the present invention, CPU is after the query message receiving an APS module transmission, namely response message is replied to APS module, inform APS module east orientation business board and the western current operating state to business board, when showing east orientation business board corresponding to the operating path in the TMS protection group of T-MPLS looped network in the response message that the CPU that APS module receives sends and west is all recovered normal to business board, APS module stops sending query message to CPU, and send APS message respectively to described both sides adjacent node, indicate described adjacent node that business is recovered back operating path by Protection path.
Below in conjunction with accompanying drawing, embodiments of the invention two are described.
Embodiments of the invention two provide a kind of method that ring network fault node realizes business recovery, and the flow process using the method to complete malfunctioning node and both sides to believe that between node, operating path recovers as shown in Figure 3, comprising:
Nodes break down in step 301, T-MPLS looped network, malfunctioning node power-off restarting;
The service traffics of step 302, two side gussets adjacent with malfunctioning node are switched to Protection path by operating path;
Whether step 303, inspection malfunctioning node system recover normal, if do not recovered, then 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 Protection path always; If malfunctioning node recovers normal, then forward step 304 to;
Step 304, malfunctioning node check whether the business board that operating path is corresponding recovers normal;
Concrete, the APS module in malfunctioning node is the cycle send query message to CPU with 10ms, and whether the east orientation business board that in the TMS protection group of inquiry T-MPLS looped network protection, operating path is corresponding and west all recover normal to business board.
CPU responds response message, informs APS module east orientation business board and the western recovery situation to business board, if do not have full recovery, then APS module continues to send query message to CPU; If east orientation business board and west have recovered normal all to business board, then forward step 305 to;
Step 305, APS module stop sending query message to CPU, send APS message to east orientation node and west to node simultaneously, and business is switched to operating path by Protection path to node by notice east orientation node and west.In addition, after receiving the APS response message that east orientation node (west to node) returns, malfunctioning node also to complete between east orientation node (west is to node) business by the recovery of Protection path to operating path at local terminal.
Embodiments of the invention additionally provide the system that a kind of ring network fault node realizes business recovery, and structure as shown in Figure 4, comprising:
Local checkout gear 401, for after nodes break down, detects the recovery situation of the TMS between this node and both sides adjacent node;
Business recovery device 402, for detect and TMS between the adjacent node of described both sides all recover normal after, to initiate business by Protection path to the recovery of operating path.
Concrete, the structure of described local checkout gear 401 as shown in Figure 5, comprising:
Business board detecting unit 4011, for detecting the working condition of the business board corresponding with the TMS between the adjacent node of described both sides;
TMS recovery situation identifying unit 4012, for after described business board detecting unit 4011 detects that described business board all normally works, to determine and TMS between the adjacent node of both sides recovers normal.
Concrete, the structure of described business recovery device 402 as shown in Figure 6, comprising:
Detecting abort unit 4021, for detecting that the TMS between described malfunctioning node and described both sides adjacent node all recovers normally, stopping the operating state detecting described business board;
APS packet sending unit 4022, for sending APS message respectively to described both sides adjacent node, indicates described adjacent node that business is recovered back operating path by Protection path.
Preferably, above-mentioned ring network fault node realizes the system of business recovery as shown in Figure 7, also comprises:
Changeover apparatus 403, for when finding this nodes break down, the business between initiation with described both sides adjacent node is by operating path switching to Protection path.
Above-mentioned ring network fault node realizes the system of business recovery, the method that can realize business recovery with a kind of ring network fault node that embodiments of the invention provide combines, malfunctioning node in looped network detects the recovery situation of the TMS between this node and both sides adjacent node, detecting that the TMS between described malfunctioning node and described both sides adjacent node all recovers normally, business is recovered back operating path by Protection path, again business recovery is returned operating path after the TMS achieved between malfunctioning node and both sides adjacent node all recovers, solve and recover the asynchronous problem causing service disconnection.
The CPU of malfunctioning node can inquire with east orientation TMS and west to east orientation business board corresponding to TMS and west to business board according to the TMS protection group of looped network, when the malfunctioning node of operating path is due to fault power-off restarting, after System recover, APS module is before transmission APS message to notify that to adjacent node it returns to operating path by Protection path, first send query message to cpu cycle property, cycle is 10ms, inquiry east orientation business board and the western recovery situation to business board, after CPU receives query message, reply response message to APS module, inform APS module east orientation business board and the western recovery situation to business board.Until APS module receives in the response message of CPU show east orientation business board with west to business board full recovery; stop sending query message to CPU; and send APS message to east orientation node and west to node immediately, business is returned to operating path by Protection path by notice both sides adjacent node.Such east orientation node and west were shortened greatly to the time difference that node returns to operating path by Protection path, also just greatly reduced the recovery time of business, avoided service disconnection.
One of ordinary skill in the art will appreciate that all or part of step of above-described embodiment can use computer program flow process to realize, described computer program can be stored in a computer-readable recording medium, described computer program (as system, unit, device etc.) on corresponding hardware platform performs, when performing, step comprising embodiment of the method one or a combination set of.
Alternatively, all or part of step of above-described embodiment also can use integrated circuit to realize, and these steps can be made into integrated circuit modules one by one respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Each device/functional module/functional unit in above-described embodiment can adopt general calculation element to realize, and they can concentrate on single calculation element, also can be distributed on network that multiple calculation element forms.
Each device/functional module/functional unit in above-described embodiment using the form of software function module realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.The above-mentioned computer read/write memory medium mentioned can be 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 change 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 described in claim.
Claims (9)
1. ring network fault node realizes a method for business recovery, it is characterized in that, comprising:
Malfunctioning node in looped network detects the recovery situation of the transmission multi-label protocol exchange section layer TMS between this node and both sides adjacent node;
Detecting the TMS between described malfunctioning node and described both sides adjacent node all recover normal after, to initiate business by Protection path to the recovery of operating path.
2. ring network fault node according to claim 1 realizes the method for business recovery, it is characterized in that, the recovery situation of the TMS that the malfunctioning node in described looped network detects between this node and both sides adjacent node comprises:
Detect the working condition of the business board corresponding with the TMS between the adjacent node of described both sides;
After described business board all normally works, to determine and TMS between the adjacent node of both sides recovers normal.
3. ring network fault node according to claim 2 realizes the method for business recovery, it is characterized in that, the working condition of the business board that the TMS between described detection with described both sides adjacent node is corresponding is specially:
APS (APS) module of described malfunctioning node inquires about the working condition of business board corresponding to TMS between the adjacent node of described both sides to the CPU of this malfunctioning node.
4. ring network fault node according to claim 2 realizes the method for business recovery; it is characterized in that; detecting that the TMS between described malfunctioning node and described both sides adjacent node all recovers normally, initiating business to be comprised the following steps by the recovery of Protection path to operating path:
Detecting that the TMS between described malfunctioning node and described both sides adjacent node all recovers normally, stop the operating state detecting described business board;
Send APS message respectively to described both sides adjacent node, indicate described adjacent node that business is recovered back operating path by Protection path.
5. ring network fault node according to claim 1 realizes the method for business recovery, it is characterized in that, the malfunctioning node in described looped network also comprises before detecting the step of the recovery situation of the TMS between this node and both sides adjacent node:
When malfunctioning node finds this nodes break down, the business between initiation with described both sides adjacent node is by operating path switching to Protection path.
6. ring network fault node realizes a system for business recovery, it is characterized in that, comprising:
Local checkout gear, for after nodes break down, detects the recovery situation of the TMS between this node and both sides adjacent node;
Business recovery device, for detect and TMS between the adjacent node of described both sides all recover normal after, to initiate business by Protection path to the recovery of operating path.
7. ring network fault node according to claim 6 realizes the system of business recovery, it is characterized in that, described local checkout gear comprises:
Business board detecting unit, for detecting the working condition of the business board corresponding with the TMS between the adjacent node of described both sides;
TMS recovery situation identifying unit, for after described business board detecting unit detects that described business board all normally works, to determine and TMS between the adjacent node of both sides recovers normal.
8. ring network fault node according to claim 7 realizes the system of business recovery, it is characterized in that, described business recovery device comprises:
Detecting abort unit, for detecting that the TMS between described malfunctioning node and described both sides adjacent node all recovers normally, stopping the operating state detecting described business board;
APS packet sending unit, for sending APS message respectively to described both sides adjacent node, indicates described adjacent node that business is recovered back operating path by Protection path.
9. ring network fault node according to claim 6 realizes the system of business recovery, it is characterized in that, this system also comprises:
Changeover apparatus, for when finding this nodes break down, the business between initiation with described both sides adjacent node is by operating path switching to 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 true CN102014033B (en) | 2015-04-01 |
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| 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 |
| CN102315987B (en) * | 2011-09-13 | 2017-05-10 | 中兴通讯股份有限公司 | Ring network protection group link switching method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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