CN101056247A - A method and device for establishing the traffic work tunnel - Google Patents
A method and device for establishing the traffic work tunnel Download PDFInfo
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- CN101056247A CN101056247A CNA2007101079449A CN200710107944A CN101056247A CN 101056247 A CN101056247 A CN 101056247A CN A2007101079449 A CNA2007101079449 A CN A2007101079449A CN 200710107944 A CN200710107944 A CN 200710107944A CN 101056247 A CN101056247 A CN 101056247A
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Abstract
The invention discloses a method for establishing the traffic engineering tunnel and reduces the restraint condition of the described bandwidth when the present bandwidth restraint condition leads to the establishment failure of the traffic engineering from the source to destination; the invention will establish the TE tunnel from the source to destination according to loosened bandwidth restraint condition. In addition, the invention also discloses one device for establishing the traffic engineering tunnel. The technical scheme provided in the invention improves the success rate of establishing the TE tunnel from the current source to the destination and enables the TE tunnel to continuous occupy the fixed bandwidth after establishment. Meanwhile, the tunnel can be optimized to the best status again combining with the re-optimization technology.
Description
Technical field
The present invention relates to the multiprotocol label switching (mpls) technology, refer to a kind of method and device of setting up traffic engineering tunnel especially.
Background technology
Because the network congestion that factors such as network resource loads is unbalanced cause is the subject matter that influences the backbone network performance at present.In order to address this problem, multi-protocol label switching traffic engineering (MPLS TE) technology is passed through in conjunction with MPLS technology and traffic engineering (te) technology, set up the traffic engineering tunnel of source end according to the constraints that sets in advance to destination, realize resource reservation, got around the purpose of congested node, avoided network congestion.Referring to Fig. 1, Fig. 1 is the schematic diagram of source end R1 to each link condition between the destination R5.Suppose that current needs set up the traffic engineering tunnel of R1 to R5, bandwidth constraint condition in the constraints is 5M, and each link of other constraintss in the constraints is when all satisfying, and the R1 that sets up according to Fig. 1 to the traffic engineering tunnel between the R5 is: R1--Link1--R2--Link2--R3--Link3--R5.
But, because bandwidth constraint condition of the prior art is to set in advance according to the required optimum if tunnel conditions of business, therefore when the path of satisfying this traffic engineering tunnel optimum bandwidth does not exist, current source end can't be set up to the traffic engineering tunnel between the destination, can reduce the success rate that traffic engineering tunnel is set up like this, the business that causes being about to be carried on this traffic engineering tunnel also can't normally be carried out, and has influenced professional service quality (QoS).Referring to Fig. 2, suppose that the bandwidth constraint condition in the constraints is 5M this moment equally, and each link of other constraintss in the constraints is when all satisfying, when Link3 is in interrupt status, and the bandwidth of Link4 is 4M, do not satisfy the bandwidth constraint condition, R1 can't set up to the traffic engineering tunnel of R5, and the business that is about to be carried on this traffic engineering tunnel also can't normally be carried out.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of setting up traffic engineering tunnel, uses this method and can improve the success rate of setting up traffic engineering tunnel.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method of setting up traffic engineering tunnel,
Determine to reduce described bandwidth constraint condition because the bandwidth constraint condition that sets in advance causes the source end to be set up when getting nowhere to the TE tunnel of traffic engineering of destination;
According to the bandwidth constraint condition after reducing, set up the traffic engineering tunnel of described source end to destination.
Preferably, the described bandwidth constraint condition of described reduction is:
According to the primary bandwidth demand of described traffic engineering tunnel bearer service, reduce described bandwidth constraint condition.
Preferably, describedly determine because the bandwidth constraint condition that sets in advance, cause the source end to set up to get nowhere being to the TE tunnel of traffic engineering of destination:
When determining successfully not set up described traffic engineering tunnel according to the initializing constraint that sets in advance, judge that whether the failure cause that returns when successfully not setting up described traffic engineering tunnel is for not satisfying the bandwidth constraint condition, if then determine because the bandwidth constraint condition that sets in advance causes the source end to set up unsuccessful to the TE tunnel of traffic engineering of destination.
Preferably, describedly determine that successfully do not set up described traffic engineering tunnel according to the initializing constraint that sets in advance is:
According to the initializing constraint that sets in advance and set up the required traffic engineering database TEDB of described traffic engineering tunnel, utilize the described traffic engineering tunnel of CSPF algorithm computation, judge whether the CSPF algorithm successfully calculates described traffic engineering tunnel, when successfully not calculating described traffic engineering tunnel, then determine successfully not set up described traffic engineering tunnel according to the initializing constraint that sets in advance.
Preferably, this method further comprises: be provided with and rebulid the number of times thresholding;
Determining because the bandwidth constraint condition that sets in advance causes the source end after the TE tunnel of traffic engineering foundation of destination is unsuccessful, and before reducing described bandwidth constraint condition, further comprising:
Judge because the bandwidth constraint condition that sets in advance causes described traffic engineering tunnel whether to set up unsuccessful number of times more than or equal to the described number of times thresholding that rebulids, if then carry out the step of the described bandwidth constraint condition of described reduction.
Preferably, according to the bandwidth constraint condition after reducing, rebulid described source end and arrive after the traffic engineering tunnel of described destination, this method further comprises:
Judge according to the bandwidth constraint condition that sets in advance whether can successfully set up described traffic engineering tunnel, in the time can successfully setting up, then set up the traffic engineering tunnel of described source end to destination according to the bandwidth constraint condition that sets in advance.
In addition, another main purpose of the present invention is to provide a kind of device of setting up the flow process engineering tunnel, uses this device and can improve the success rate of setting up traffic engineering tunnel.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of device of setting up traffic engineering tunnel, this device comprises: control unit and set up the unit;
The TE tunnel of traffic engineering of source end to destination set up according to the constraints that sets in advance in the described unit of setting up; When foundation is unsuccessful, return failure cause to described control unit; And receive bandwidth constraint condition after the reduction that described control unit sends, set up the traffic engineering tunnel of described source end according to the bandwidth constraint condition after reducing to described destination;
Described control unit, receive described failure cause, determining that failure cause is that the bandwidth constraint condition that sets in advance causes described traffic engineering tunnel to be set up when unsuccessful, reduce described bandwidth constraint condition, and the bandwidth constraint condition after will reducing is sent to the described unit of setting up.
Preferably, the described unit of setting up comprises: unit and traffic engineering database TEDB are set up in link computing unit, tunnel;
Described link computing unit, calculate described traffic engineering tunnel according to canned data among constraints that sets in advance and the TEDB, when calculating successfully, indicate described tunnel to set up the unit and set up described traffic engineering tunnel, when calculating is unsuccessful, return failure cause to described control unit; Bandwidth constraint condition after the reduction that the reception control unit sends is upgraded the constraints that sets in advance, and calculates described traffic engineering tunnel according to canned data among constraints after upgrading and the TEDB;
The unit is set up in described tunnel; According to the indication of receiving, set up described traffic engineering tunnel from described link computing unit;
Described TEDB, the TE relevant information of storage device region, place or all links of rank.
Preferably,
Described link computing unit, after having set up described traffic engineering tunnel according to the constraints after upgrading, further calculate the another traffic engineering tunnel of described source end to destination according to the constraints that sets in advance, when calculating this another traffic engineering tunnel, indicate described tunnel to set up the unit and set up the current traffic engineering tunnel that obtains, and send the optimization indication to described control unit;
Described control unit further after receiving the optimization indication that described link computing unit sends, is removed the described traffic engineering tunnel of setting up according to the constraints after upgrading.
Preferably, described device is positioned at router.
A kind of technical scheme of setting up traffic engineering tunnel provided by the present invention, determining because the bandwidth constraint condition that sets in advance causes the source end to be set up when getting nowhere to the traffic engineering tunnel of destination, the initial bandwidth constraints that sets in advance by reduction, rebulid the traffic engineering tunnel of source end according to the bandwidth constraint condition after reducing to destination, improved and set up the success rate of current source end, can continue to take fixed-bandwidth after traffic engineering tunnel is set up to the destination traffic engineering tunnel.In conjunction with the re-optimization technology, the tunnel can be optimized to optimum state again simultaneously.
Description of drawings
Fig. 1 sets up schematic diagram for the prior art traffic engineering tunnel;
Fig. 2 sets up schematic diagram for the prior art traffic engineering tunnel;
Fig. 3 is the exemplary process diagram of the inventive method;
Fig. 4 is the exemplary block diagram of apparatus of the present invention;
Fig. 5 is the flow chart of preferred embodiment method of the present invention;
Fig. 6 sets up schematic diagram for traffic engineering tunnel of the present invention;
Fig. 7 is the structure chart of preferred embodiment device of the present invention.
Embodiment
For realizing goal of the invention of the present invention, in technical scheme of the present invention, determining because the bandwidth constraint condition that sets in advance causes the source end to be set up when getting nowhere to the traffic engineering tunnel of destination, the initial bandwidth constraints that sets in advance by reduction, rebulid the traffic engineering tunnel of source end according to the bandwidth constraint condition after reducing, reach to improve and set up the purpose of current source end to destination traffic engineering tunnel success rate to destination.
Referring to Fig. 3, Fig. 3 is the exemplary flow of the inventive method.Specifically comprise: in step 301, determine because the bandwidth constraint condition that sets in advance causes the source end to set up when unsuccessful reduction bandwidth constraint condition to the TE tunnel of traffic engineering of destination.In step 302,, set up the traffic engineering tunnel of source end to destination according to the bandwidth constraint condition after reducing.
Referring to Fig. 4, Fig. 4 is the exemplary block diagram of apparatus of the present invention.This device specifically comprises: control unit 41 and set up unit 42.Wherein, setting up unit 42 is mainly used in according to the constraints that sets in advance and sets up the TE tunnel of traffic engineering of source end to destination; When foundation is unsuccessful, return failure cause to control unit 41; And the bandwidth constraint condition after the reduction of reception control unit 41 transmissions, set up the traffic engineering tunnel of source end according to the bandwidth constraint condition after reducing to destination.Control unit 41 is mainly used in the reason that takes defeat, and determining failure cause because the bandwidth constraint condition that sets in advance causes traffic engineering tunnel to be set up when unsuccessful, reduces the bandwidth constraint condition, and the bandwidth constraint condition after will reducing is sent to and sets up unit 42.
As everyone knows, the bandwidth of its traffic engineering tunnel of setting up of bandwidth constraint conditional decision, when reducing the bandwidth constraint condition, the bandwidth of this traffic engineering tunnel also can decrease, because loaded service can only obtain and the corresponding service quality of traffic engineering tunnel bandwidth on the traffic engineering tunnel, can cause the service quality of the business thereon of carrying to can not get ensureing when therefore the amplitude that reduces in the bandwidth constraint condition is bigger.And then preferably, in technical scheme of the present invention, can reduce the bandwidth constraint condition of this traffic engineering tunnel according to the professional required primary bandwidth that is carried on the current traffic engineering tunnel.
Below enumerate preferred embodiment, technical scheme of the present invention is described by this preferred embodiment.In this preferred embodiment, be provided with when because the bandwidth constraint condition in the constraints that sets in advance, cause the source end to be set up when unsuccessful to the TE tunnel of traffic engineering of destination, reduction bandwidth constraint condition is to 80% of initial setting up.Promptly the bandwidth constraint condition when initial setting is 5M, and the bandwidth constraint condition after the reduction is 4M.Here, it is determined according to the primary bandwidth demand of the business that is about to be carried on this traffic engineering tunnel reducing bandwidth constraint condition to the bandwidth constraint condition 80% of initial setting up.
Referring to Fig. 5, Fig. 5 is the flow chart of this preferred embodiment method.
In step 501, according to the current initializing constraint that sets in advance, when between source end and destination, being not being met the traffic engineering tunnel of initializing constraint, judge whether because the bandwidth constraint condition in the initializing constraint causes successfully setting up current traffic engineering tunnel, if then execution in step 502; Otherwise, execution in step 504.
Here, set up traffic engineering tunnel between current source end and the destination according to the initializing constraint that sets in advance, normally carry out: at first according to following steps, source end router is according to the constraints that sets in advance, link in self traffic engineering database (TEDB) is sheared, the link that does not satisfy constraints is cut off; Then, use Constraint Shortest Path First (CSPF) algorithm in shearing remaining link, to obtain an optimal path that is connected to the destination router; At last, be established to the traffic engineering tunnel of destination router according to the optimal path that calculates.Therefore, can obtain, when the success of CSPF algorithm computation, have the link that satisfies initializing constraint in the current network; When the CSPF algorithm computation is unsuccessful, there is not the link that satisfies initializing constraint in the current network.And then, in this preferred embodiment, can whether can successfully calculate a source end with the CSPF algorithm and determine to the link of destination whether can set up traffic engineering tunnel according to the current initializing constraint that sets in advance.If CSPF calculates successfully, then can determine the initializing constraint that sets in advance according to current to have traffic engineering tunnel between source end and the destination; Otherwise, then can determine initializing constraint according to Set For Current, there is not traffic engineering tunnel between source end and the destination.
In addition, when the CSPF algorithm can not calculate the traffic engineering tunnel that satisfies this constraints according to the initializing constraint that sets in advance, router can provide the reason of calculating failure, can't satisfy or the constraints of certain bar link such as paintedly can't satisfy etc. such as the bandwidth of certain bar link.And then the failure cause that can return according to router judges whether because the bandwidth constraint condition in the initializing constraint causes successfully setting up current traffic engineering tunnel in this step.
What preserve among the TEDB simultaneously, is the TE relevant information of this router region or every link of rank all-router.The foundation of TEDB is that the TE expansion by intermediate system-intermediate system (IS-IS) or OSPF (OSPF) floods and sets up, be that any link in this router region or the rank adds, disappears or TE relevant information when changing, all can be passed to this router, and then this router transmits information foundation that comes and the TEDB that upgrades self by flooding by flooding.
According to the introduction of the preceding paragraph as can be known, because TEDB can collect the TE relevant information of link on every side and bring in constant renewal in self data, therefore when the CSPF algorithm computation was once unsuccessful, the CSPF algorithm can also carry out the calculating second time.And then, for the traffic engineering tunnel that makes foundation is optimal T E tunnel as far as possible, can also further be provided with for this preferred embodiment and to rebulid the number of times thresholding, when the number of times that calculates the traffic engineering tunnel failure according to the constraints of original initial setting more than or equal to rebuliding the number of times thresholding, execution in step 502 again.For example the number of times thresholding that rebulids of She Zhiing is 4 o'clock, and then the constraints of working as according to original initial setting can not successfully calculate traffic engineering tunnel, and execution in step 502 again.
In step 502, the bandwidth constraint condition is reduced to 80% of initial setting up.For example, when the bandwidth constraint condition of initial setting is 5M, then reduces and then be 4M after the bandwidth constraint condition.
In step 503,, between current source end router and destination router, set up traffic engineering tunnel again according to the constraints after the reduction bandwidth constraint condition.
Referring to Fig. 6, Fig. 6 is under situation shown in Figure 2, uses the design sketch of this preferred embodiment.By using this preferred embodiment, between R1 and R5, set up following traffic engineering tunnel: R1--Link1--R2--Link2--R3--Link4--R4--Link5--R5 as shown in Figure 6.
Different business has different primary bandwidth demands, and when the primary bandwidth demand according to business is reduced to 90% of initial setting up with the bandwidth constraint condition, the bandwidth constraint condition after promptly reducing is 4.5M.At this moment, according to network structure shown in Figure 2, can not set up the traffic engineering tunnel that satisfies constraints though between R1 and R5, use method of the present invention, but technical scheme of the present invention has been avoided existing in network when satisfying the traffic engineering tunnel of professional primary bandwidth, can be owing to the too high situation that causes this traffic engineering tunnel to set up of bandwidth constraint condition that is provided with.Utilize Internet resources to a certain extent fully, guaranteed the foundation of traffic engineering tunnel, also satisfied professional service quality simultaneously.
In step 504, finish current handling process.
In addition, the technical scheme in this preferred embodiment can also be according to being carried on primary bandwidth demand professional on the traffic engineering tunnel, reduction bandwidth constraint condition according to the concrete application of business.This is because some business does not need too high bandwidth, guarantees to get final product and only need stable bandwidth.In this case, can adopt the method that progressively reduces the bandwidth constraint condition, until calculating the traffic engineering tunnel that satisfies the bandwidth constraint condition.
In the technical scheme of this preferred embodiment, can also use automatic re-optimization technology.Promptly, rebulid after the traffic engineering tunnel between current source end router and the destination router according to the constraints after reducing the bandwidth constraint condition.Source end router can also be simultaneously according to the initial bandwidth constraints that sets in advance, calculate and whether have the traffic engineering tunnel that satisfies initial bandwidth constraints, when the traffic engineering tunnel of initial bandwidth constraints is satisfied in existence, then create a new tunnel, and business switched to new tunnel from old tunnel, delete old tunnel.Here the old tunnel of indication just is meant according to reducing the tunnel that the bandwidth constraint condition is set up.At this moment, under situation shown in Figure 6, the traffic engineering tunnel between source end router and the destination router is the traffic engineering tunnel shown in Fig. 1.
Referring to Fig. 7, Fig. 7 is the structure chart of preferred embodiment device of the present invention.In the structure chart of this preferred embodiment device, comprise control unit 71 and set up unit 72.
Wherein, setting up unit 72 comprises: unit 722 and TEDB723 are set up in link computing unit 721, tunnel.Link computing unit 721 calculates traffic engineering tunnel according to canned data among constraints that sets in advance and the TEDB723, and the indication tunnel is set up unit 722 and set up traffic engineering tunnel when calculating successfully, returns failure cause to control unit 71 when calculating is unsuccessful; Bandwidth constraint condition after the reduction that reception control unit 71 sends, the constraints that renewal sets in advance, calculate traffic engineering tunnel according to canned data among constraints after upgrading and the TEDB723, the indication tunnel is set up unit 722 and is set up traffic engineering tunnel when calculating successfully equally, returns failure cause to control unit 71 when calculating is unsuccessful.Unit 722 is set up in the tunnel; Set up traffic engineering tunnel according to the indication of receiving from link computing unit 721; TEDB723, the TE relevant information of storage device region, place or all links of rank.
In addition, in order further to realize automatic re-optimization function, link computing unit 721, after having set up traffic engineering tunnel according to the constraints after upgrading, further calculate the another traffic engineering tunnel of source end to destination according to the constraints that sets in advance, when calculating this another traffic engineering tunnel, the indication tunnel is set up unit 722 and is set up the current traffic engineering tunnel that obtains, and to control unit 71 transmission optimization indications, accordingly, control unit 71 further after receiving the optimization indication that link computing unit 721 sends, is removed the traffic engineering tunnel of setting up according to the constraints after upgrading.Here, link computing unit 721 can be carried out according to the constraints that sets in advance and be calculated the operation of source end to the traffic engineering tunnel of destination according to the re-optimization indication of receiving after having set up traffic engineering tunnel according to the constraints after upgrading.The re-optimization indication can be that control unit 71 sends to link computing unit 721 according to different re-optimization realization mechanisms, such as what periodically send or send after the re-optimization order of receiving the place equipment manager.
This preferred embodiment is described to be usually located in the router.
Technical scheme of the present invention, when the traffic engineering tunnel foundation that causes the source end to destination owing to the bandwidth constraint condition that sets in advance gets nowhere, the initial bandwidth constraints that sets in advance by reduction, improved and set up the success rate of current source end, after the tunnel is set up, can continue to take fixed-bandwidth to the destination traffic engineering tunnel.In conjunction with the re-optimization technology, the tunnel can be optimized to optimum state again simultaneously.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of method of setting up traffic engineering tunnel is characterized in that,
Determine to reduce described bandwidth constraint condition because the bandwidth constraint condition that sets in advance causes the source end to be set up when getting nowhere to the TE tunnel of traffic engineering of destination;
According to the bandwidth constraint condition after reducing, set up the traffic engineering tunnel of described source end to destination.
2, method according to claim 1 is characterized in that, the described bandwidth constraint condition of described reduction is:
According to the primary bandwidth demand of described traffic engineering tunnel bearer service, reduce described bandwidth constraint condition.
3, method according to claim 1 and 2 is characterized in that, and is described definite owing to the bandwidth constraint condition that sets in advance, and causes the source end to set up to get nowhere to the TE tunnel of traffic engineering of destination to be:
When determining successfully not set up described traffic engineering tunnel according to the initializing constraint that sets in advance, judge that whether the failure cause that returns when successfully not setting up described traffic engineering tunnel is for not satisfying the bandwidth constraint condition, if then determine because the bandwidth constraint condition that sets in advance causes the source end to set up unsuccessful to the TE tunnel of traffic engineering of destination.
4, method according to claim 3 is characterized in that, describedly determines that successfully do not set up described traffic engineering tunnel according to the initializing constraint that sets in advance is:
According to the initializing constraint that sets in advance and set up the required traffic engineering database TEDB of described traffic engineering tunnel, utilize the described traffic engineering tunnel of CSPF algorithm computation, judge whether the CSPF algorithm successfully calculates described traffic engineering tunnel, when successfully not calculating described traffic engineering tunnel, then determine successfully not set up described traffic engineering tunnel according to the initializing constraint that sets in advance.
5, method according to claim 1 and 2 is characterized in that, this method further comprises: be provided with and rebulid the number of times thresholding;
Determining because the bandwidth constraint condition that sets in advance causes the source end after the TE tunnel of traffic engineering foundation of destination is unsuccessful, and before reducing described bandwidth constraint condition, further comprising:
Judge because the bandwidth constraint condition that sets in advance causes described traffic engineering tunnel whether to set up unsuccessful number of times more than or equal to the described number of times thresholding that rebulids, if then carry out the step of the described bandwidth constraint condition of described reduction.
6, method according to claim 1 and 2 is characterized in that, according to the bandwidth constraint condition after reducing, rebulids described source end and arrives after the traffic engineering tunnel of described destination, and this method further comprises:
Judge according to the bandwidth constraint condition that sets in advance whether can successfully set up described traffic engineering tunnel, in the time can successfully setting up, then set up the traffic engineering tunnel of described source end to destination according to the bandwidth constraint condition that sets in advance.
7, a kind of device of setting up traffic engineering tunnel is characterized in that, this device comprises: control unit and set up the unit;
The TE tunnel of traffic engineering of source end to destination set up according to the constraints that sets in advance in the described unit of setting up; When foundation is unsuccessful, return failure cause to described control unit; And receive bandwidth constraint condition after the reduction that described control unit sends, set up the traffic engineering tunnel of described source end according to the bandwidth constraint condition after reducing to described destination;
Described control unit, receive described failure cause, determining that failure cause is that the bandwidth constraint condition that sets in advance causes described traffic engineering tunnel to be set up when unsuccessful, reduce described bandwidth constraint condition, and the bandwidth constraint condition after will reducing is sent to the described unit of setting up.
8, device according to claim 7 is characterized in that, the described unit of setting up comprises: unit and traffic engineering database TEDB are set up in link computing unit, tunnel;
Described link computing unit, calculate described traffic engineering tunnel according to canned data among constraints that sets in advance and the TEDB, when calculating successfully, indicate described tunnel to set up the unit and set up described traffic engineering tunnel, when calculating is unsuccessful, return failure cause to described control unit; Bandwidth constraint condition after the reduction that the reception control unit sends is upgraded the constraints that sets in advance, and calculates described traffic engineering tunnel according to canned data among constraints after upgrading and the TEDB;
The unit is set up in described tunnel; According to the indication of receiving, set up described traffic engineering tunnel from described link computing unit;
Described TEDB, the TE relevant information of storage device region, place or all links of rank.
9, device according to claim 8 is characterized in that,
Described link computing unit, after having set up described traffic engineering tunnel according to the constraints after upgrading, further calculate the another traffic engineering tunnel of described source end to destination according to the constraints that sets in advance, when calculating this another traffic engineering tunnel, indicate described tunnel to set up the unit and set up the current traffic engineering tunnel that obtains, and send the optimization indication to described control unit;
Described control unit further after receiving the optimization indication that described link computing unit sends, is removed the described traffic engineering tunnel of setting up according to the constraints after upgrading.
10, according to claim 7,8 or 9 described devices, it is characterized in that described device is positioned at router.
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| CNB2007101079449A CN100531100C (en) | 2007-05-18 | 2007-05-18 | A method and device for establishing the traffic work tunnel |
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| CNB2007101079449A CN100531100C (en) | 2007-05-18 | 2007-05-18 | A method and device for establishing the traffic work tunnel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312616A (en) * | 2012-03-16 | 2013-09-18 | 华为技术有限公司 | Method and device for establishing multicast path |
| CN103780474A (en) * | 2014-01-13 | 2014-05-07 | 杭州华三通信技术有限公司 | Traffic engineering tunnel resource preemption method and device |
| CN106850301A (en) * | 2017-02-14 | 2017-06-13 | 深圳市风云实业有限公司 | A kind of tunnel configuration mode based on intention |
| WO2017118431A1 (en) * | 2016-01-08 | 2017-07-13 | 中兴通讯股份有限公司 | Route selection method and apparatus |
-
2007
- 2007-05-18 CN CNB2007101079449A patent/CN100531100C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312616A (en) * | 2012-03-16 | 2013-09-18 | 华为技术有限公司 | Method and device for establishing multicast path |
| WO2013135046A1 (en) * | 2012-03-16 | 2013-09-19 | 华为技术有限公司 | Method and device for establishing multicast path |
| CN103780474A (en) * | 2014-01-13 | 2014-05-07 | 杭州华三通信技术有限公司 | Traffic engineering tunnel resource preemption method and device |
| CN103780474B (en) * | 2014-01-13 | 2017-03-15 | 杭州华三通信技术有限公司 | A kind of traffic engineering tunnel resource seizing method and device |
| WO2017118431A1 (en) * | 2016-01-08 | 2017-07-13 | 中兴通讯股份有限公司 | Route selection method and apparatus |
| CN106961389A (en) * | 2016-01-08 | 2017-07-18 | 中兴通讯股份有限公司 | A kind of route selection method and device |
| CN106850301A (en) * | 2017-02-14 | 2017-06-13 | 深圳市风云实业有限公司 | A kind of tunnel configuration mode based on intention |
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|---|---|
| CN100531100C (en) | 2009-08-19 |
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