CN102148693A - Shared link protection method, node and shared link protection system - Google Patents
Shared link protection method, node and shared link protection system Download PDFInfo
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- CN102148693A CN102148693A CN2010101119734A CN201010111973A CN102148693A CN 102148693 A CN102148693 A CN 102148693A CN 2010101119734 A CN2010101119734 A CN 2010101119734A CN 201010111973 A CN201010111973 A CN 201010111973A CN 102148693 A CN102148693 A CN 102148693A
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Abstract
The invention provides a shared link protection method, a node and a shared link protection system, which relate to networks with ring network structures and solve the problems of high data processing overhead, wasting of protection resources and low bandwidth reusability in a shared link protection process. The method comprises the following steps of: when a terminal node of a shared link detects the shared link fails, acquiring the priority of at least one currently available protection channel; selecting the protection channel with the highest priority from the at least one protection channel as a service protection channel; and switching service data on the current shared link onto the service protection channel for transmission. The technical scheme provided by the invention is applied to the networks with the ring network structures.
Description
Technical field
The present invention relates to the ring network structure network, relate in particular to a kind of shared link guard method, node and shared link protection system.
Background technology
With respect to other networking structures, the node number is less on the one hand to adopt ring network structure to carry out networking, realizes simpler; can adopt looped network protection on the other hand; strengthen the reliability of network, so in current network, ring network structure has obtained large-scale application.
Looped network for MPLS can carry out the bypass protection; be mainly used in and prevent that disparate networks serial connection gateway device from becoming Single Point of Faliure because of accident inefficacy (as hardware fault, power failure, software deadlock etc.); or when carrying out upgrade maintenance, these gateway devices provide favourable help; avoided switching time delays and the network O﹠M difficult management of bringing, become the indispensable solution of network high availability operational support because of network is manual.
In the process that above-mentioned use bypass resist technology is protected looped network, there are the following problems:
May exist a shared link (promptly to connect two or more rings between two or more looped networks; and by one section link of these a plurality of ring unity of possession); and each looped network has all carried out the bypass protection to this shared link; be this shared link and disposed a protection passage; be used for when this shared link breaks down, the business datum on it be switched on the protection passage transmit.When the shared link of a plurality of looped networks breaks down; a plurality of looped networks are all carried out and are switched; causing same business datum to be switched on many protection passages transmits; business datum recipient repeats to receive business datum by many protection passages; increased business datum recipient's data processing expense; waste resource conservation, reduced bandwidth availability ratio.
Summary of the invention
The invention provides a kind of shared link guard method, node and shared link protection system, solved in the shared link protection process that the data processing expense is big, resource conservation waste and the low problem of bandwidth reuse rate.
A kind of shared link guard method comprises:
The end node of shared link obtains the priority of current available at least one protection passage when detecting shared link and break down;
From described at least one protection passage, select the highest one of priority as the service protection passage;
Business datum on the current shared link is switched on the described service protection passage transmits.
Further, the end node of described shared link obtains before the step of priority of current available at least one protection passage when detecting shared link and break down, and also comprises:
Protect passage at least one of described shared link priority is set respectively.
Further, the end node of described shared link obtains before the step of priority of current available at least one protection passage when detecting shared link and break down, and also comprises:
Whether described end node detects described shared link and breaks down.
Further, the described priority of obtaining current available at least one protection passage comprises:
Whether at least one protection passage of judging described shared link operate as normal;
The protection passage that obtains operate as normal reaches the priority of respectively protecting passage.
Further, described business datum on the current shared link is switched to transmit on the described service protection passage be specially:
Encapsulation format according to described service protection passage encapsulates service message, by the service message of described service protection passage after the peer node of described shared link sends encapsulation; Or,
Receive the service message that described shared link peer node sends by described service protection passage,, described service message is carried out decapsulation according to the encapsulation format of this service protection passage.
The present invention also provides a kind of node, comprising:
The protection channel selecting module is used for when detecting shared link and break down, and obtains the priority of current available at least one protection passage, and from described at least one protection passage, selects the highest one of priority as the service protection passage;
Switch module, be used for the business datum on the current shared link is switched on the described service protection passage and transmit.
Further, above-mentioned node also comprises:
Protection channel arrangement module is used at least one protection passage of described shared link that priority is set respectively;
Whether fault detection module is used to detect described shared link and breaks down.
The present invention also provides a kind of shared link protection system, comprises first node and Section Point, and described first node and Section Point are respectively the end node of shared link, also is equipped with at least one protection passage between described first node and Section Point;
Described first node is used for when detecting shared link and break down, and obtains the priority of current available at least one protection passage;
From described at least one protection passage, select the highest one of priority as the service protection passage;
Business datum on the current shared link is switched on the described service protection passage transmits.
Further, described first node also is used at least one protection passage of described shared link that priority is set respectively.
Further, whether described first node also is used to detect described shared link and breaks down.
Embodiments of the invention provide a kind of shared link guard method; node and shared link protection system; end node by shared link carries out fault detect to shared link; and when detecting shared link and break down; according to current can with at least one the protection passage priority; select the highest one of priority as the service protection passage; business datum on the shared link of fault is switched on this service protection passage transmits; avoided when shared link breaks down; the protection passage of a plurality of looped networks repeats service data transmission, and it is big to have solved in the shared link protection process data processing expense; resource conservation waste and the low problem of bandwidth reuse rate.
Description of drawings
Fig. 1 is the structural representation of embodiments of the invention applied environment;
The flow chart of a kind of shared link guard method that Fig. 2 provides for embodiments of the invention;
The structural representation of a kind of node that Fig. 3 provides for embodiments of the invention;
The structural representation of a kind of node that Fig. 4 provides for another embodiment of the present invention;
The structural representation of a kind of shared link protection system that Fig. 5 provides for embodiments of the invention.
Embodiment
In looped network, there is the transannular structure; as shown in Figure 1; there is a shared link between two looped network Ring 1 and the Ring 2; shared link is an end node with node 1 and node 2; the protection passage that all has this shared link among Ring 1 and the Ring 2; to send business datum from node 1 to node 2 is example; then the routed path of the protection passage of this shared channel is " a node 1-node 5-node 4-node 3-node 2 " in Ring 1, and the routed path of the protection passage of this shared channel is " a node 1-node 9-node 8-node 7-node 6-node 2 " among the Ring 2.When shared link breaks down, switch because of the protection of all carrying out separately on two looped networks, cause node 2 to repeat to receive same business datum by different protection passages, increased the processing burden of node 2 on the one hand, can bring the out of order of business; On the other hand, business datum repeats twice transmission, has taken double bandwidth resources, has caused the waste of bandwidth resources.
In order to address the above problem, embodiments of the invention provide a kind of shared link guard method, are example with network configuration shown in Figure 1, use this method to finish to the process of shared link troubleshooting as shown in Figure 2, comprising:
Step 201, for described shared link at least one the protection passage priority is set;
In this step, at first on two end nodes 1 and node 2 of shared link, respectively along Ring 1 and Ring 2 directions, dispose two protection passages, for node 1, routed path is " a node 1-node 5-node 4-node 3-node 2 ", and the routed path of the protection passage of this shared channel is " a node 1-node 9-node 8-node 7-node 6-node 2 " among the Ring 2; And for node 2, routed path is " a node 2-node 3-node 4-node 5-node 1 ", and the routed path of the protection passage of this shared channel is " a node 2-node 6-node 7-node 8-node 9-node 1 " among the Ring 2.Setting is higher along the priority of the protection passage of Ring 1.
Whether step 202, end node detect described shared link and break down;
In the embodiment of the invention, detect shared link by periodic transmission fault detect method of message and whether break down.
For example; between two end nodes 1 and node 2 of shared link; periodically send the fault detect message; in certain time length (in 3.5 doubling times) do not receive the detection messages that peer node sends over when node 1 or node 2; illustrate that then there has been fault in this shared link, start the process that the data of transmitting on the shared link is switched to the protection passage.
The end node of step 203, shared link obtains the priority of current available at least one protection passage when detecting shared link and break down;
In this step, when needs protection is switched, at first need to determine respectively to protect passage whether normal, obtain the priority of the protection passage of operate as normal, as the foundation of selecting the service protection passage.
Step 204, from described at least one protection passage, select the highest one of priority as the service protection passage;
In this step; select the higher protection passage of priority according to the priority of the protection passage that originally set; be the protection passage (node 1-node 5-node 4-node 3-node 2 or node 2-node 3-node 4-node 5-node 1) of Ring 1, as the service protection passage.
Step 205, the business datum on the current shared link is switched on the described service protection passage transmits;
In this step; select protect passage after; business protection to original this shared link of process is switched; as: for the business that sends to node 9 from node 3; because its original service path (node 3-node 2-node 1-node 9) breaks down, then carry out the path and switch at this professional upstream node 2.Under service protection passage (node 2-node 3-node 4-node 5-node 1) normal condition; then starting this service protection passage protects; this service message is encapsulated in this service protection passage; and after being sent to this professional downstream node 1; continuation is sent on the destination node 9 according to original operating path direction (1-9).
When the higher protection passage of priority can't operate as normal; then by the lower protection passage of priority (node 2-node 6-node 7-node 8-node 9-node 1); after this business is sent to node 1; after again the outer layer tunnel label being ejected; continuation is sent on the destination node 9 according to original operating path (1-9).
Need to prove that embodiments of the invention are that example describes with the shared link of two looped networks only, for the shared link of two above ring network structures, the shared link guard method that the embodiment of the invention provides is suitable equally, and this is not limited.
Embodiments of the invention also provide a kind of node, and its structure comprises as shown in Figure 3:
Protection channel selecting module 301 is used for when detecting shared link and break down, and obtains the priority of current available at least one protection passage, and from described at least one protection passage, selects the highest one of priority as the service protection passage;
Switch module 302, be used for the business datum on the current shared link is switched on the described service protection passage and transmit.
Further, above-mentioned node also comprises as shown in Figure 4:
Protection channel arrangement module 303 is used at least one protection passage of described shared link that priority is set;
Whether fault detection module 304 is used to detect described shared link and breaks down.
Embodiments of the invention also provide a kind of shared link protection system, its structure as shown in Figure 5, comprise first node 501 and Section Point 502, described first node 501 and Section Point 502 are respectively the end node of shared link, also are equipped with at least one protection passage between first node 501 and Section Point 502;
Described first node 501 is used for when detecting shared link and break down, and obtains the priority of current available at least one protection passage;
From described at least one protection passage, select the highest one of priority as the service protection passage;
Business datum on the current shared link is switched on the described service protection passage transmits.
Further, described first node 501 also is used at least one protection passage of described shared link that priority is set.
Further, whether described first node 501 also is used to detect described shared link and breaks down.
Above-mentioned node and shared link protection system; can combine with a kind of shared link guard method that embodiments of the invention provide; end node by shared link carries out fault detect to shared link; and when detecting shared link and break down; according to current can with at least one the protection passage priority; select the highest one of priority as the service protection passage; business datum on the shared link of fault is switched on this service protection passage transmits; avoided when shared link breaks down; the protection passage of a plurality of looped networks repeats service data transmission, and it is big to have solved in the shared link protection process data processing expense; resource conservation waste and the low problem of bandwidth reuse rate.
One of ordinary skill in the art will appreciate that and realize that all or part of step that the foregoing description method is carried is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises one of step or its combination of method embodiment when carrying out.
In addition, each functional unit in each embodiment of the present invention can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, 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 (10)
1. a shared link guard method is characterized in that, comprising:
The end node of shared link obtains the priority of current available at least one protection passage when detecting shared link and break down;
From described at least one protection passage, select the highest one of priority as the service protection passage;
Business datum on the current shared link is switched on the described service protection passage transmits.
2. shared link guard method according to claim 1 is characterized in that, the end node of described shared link obtains before the step of priority of current available at least one protection passage when detecting shared link and break down, and also comprises:
Protect passage at least one of described shared link priority is set respectively.
3. shared link guard method according to claim 1 is characterized in that, the end node of described shared link obtains before the step of priority of current available at least one protection passage when detecting shared link and break down, and also comprises:
Whether described end node detects described shared link and breaks down.
4. shared link guard method according to claim 1 is characterized in that, the described priority of obtaining current available at least one protection passage comprises:
Whether at least one protection passage of judging described shared link operate as normal;
The protection passage that obtains operate as normal reaches the priority of respectively protecting passage.
5. shared link guard method according to claim 1 is characterized in that, described business datum on the current shared link is switched to transmit on the described service protection passage be specially:
Encapsulation format according to described service protection passage encapsulates service message, by the service message of described service protection passage after the peer node of described shared link sends encapsulation; Or,
Receive the service message that described shared link peer node sends by described service protection passage,, described service message is carried out decapsulation according to the encapsulation format of this service protection passage.
6. a node is characterized in that, comprising:
The protection channel selecting module is used for when detecting shared link and break down, and obtains the priority of current available at least one protection passage, and from described at least one protection passage, selects the highest one of priority as the service protection passage;
Switch module, be used for the business datum on the current shared link is switched on the described service protection passage and transmit.
7. node according to claim 6 is characterized in that, also comprises:
Protection channel arrangement module is used at least one protection passage of described shared link that priority is set respectively;
Whether fault detection module is used to detect described shared link and breaks down.
8. a shared link protection system is characterized in that, comprises first node and Section Point, and described first node and Section Point are respectively the end node of shared link, also is equipped with at least one protection passage between described first node and Section Point;
Described first node is used for when detecting shared link and break down, and obtains the priority of current available at least one protection passage;
From described at least one protection passage, select the highest one of priority as the service protection passage;
Business datum on the current shared link is switched on the described service protection passage transmits.
9. shared link protection system according to claim 8 is characterized in that,
Described first node also is used at least one protection passage of described shared link that priority is set respectively.
10. shared link protection system according to claim 8 is characterized in that,
Whether described first node also is used to detect described shared link and breaks down.
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| CN201010111973.4A CN102148693B (en) | 2010-02-05 | 2010-02-05 | Shared granularity method, node and shared granularity system |
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| CN201010111973.4A CN102148693B (en) | 2010-02-05 | 2010-02-05 | Shared granularity method, node and shared granularity system |
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| CN105281927A (en) * | 2014-05-28 | 2016-01-27 | 中兴通讯股份有限公司 | Method and device for multilink protection switching |
| CN107886325A (en) * | 2017-10-12 | 2018-04-06 | 北京展鸿软通科技股份有限公司 | A kind of method for paying link sharing |
| CN107959623A (en) * | 2016-10-18 | 2018-04-24 | 腾讯科技（深圳）有限公司 | A kind of multichannel disaster recovery method and device |
| WO2019128647A1 (en) * | 2017-12-29 | 2019-07-04 | 中兴通讯股份有限公司 | Message transmission method and device, storage medium and electronic device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105281927A (en) * | 2014-05-28 | 2016-01-27 | 中兴通讯股份有限公司 | Method and device for multilink protection switching |
| CN107959623A (en) * | 2016-10-18 | 2018-04-24 | 腾讯科技（深圳）有限公司 | A kind of multichannel disaster recovery method and device |
| CN107959623B (en) * | 2016-10-18 | 2020-10-16 | 腾讯科技（深圳）有限公司 | Multichannel disaster recovery method and device |
| CN107886325A (en) * | 2017-10-12 | 2018-04-06 | 北京展鸿软通科技股份有限公司 | A kind of method for paying link sharing |
| CN107886325B (en) * | 2017-10-12 | 2021-12-03 | 北京展鸿软通科技股份有限公司 | Payment link sharing method |
| WO2019128647A1 (en) * | 2017-12-29 | 2019-07-04 | 中兴通讯股份有限公司 | Message transmission method and device, storage medium and electronic device |
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| CN102148693B (en) | 2015-12-16 |
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