CN104065522A - Method for detecting PTN link available bandwidth and device thereof - Google Patents
Method for detecting PTN link available bandwidth and device thereof Download PDFInfo
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- CN104065522A CN104065522A CN201310087483.9A CN201310087483A CN104065522A CN 104065522 A CN104065522 A CN 104065522A CN 201310087483 A CN201310087483 A CN 201310087483A CN 104065522 A CN104065522 A CN 104065522A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0876—Network utilisation, e.g. volume of load or congestion level
- H04L43/0882—Utilisation of link capacity
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Abstract
The invention discloses a method for detecting PTN link available bandwidth and a device thereof. The method comprises the steps that 1) link bandwidth is calculated according to an endpoint selected by a user and selection of a preset algorithm corresponding to a port condition when a PTN service is established; 2) CIR values of all tunnels and pseudo-wires through a link are read; and 3) current available bandwidth of the link is obtained according to link bandwidth and the CIR values of the tunnels and the pseudo-wires. The device comprises a bandwidth resource calculating module which is used for calculating link bandwidth according to the endpoint selected by the user and selection of the preset algorithm corresponding to the port condition, reading the CIR values of all the tunnels and the pseudo-wires borne on the link and calculating current available bandwidth of the link according to the preset algorithm. Available bandwidth resources of all the links can be detected according to A/Z endpoint network elements selected by the user in establishment of the PTN service so that the links with abundant bandwidth resources can be conveniently selected by the user, and existing resources are most reasonably utilized.
Description
Technical field
The present invention relates to communication technique field, relate in particular to a kind of method and device of the PTN of detecting link available bandwidth.
Background technology
At communication field, activating the service is one of most important function, and present most of producer has supported the function of end-to-end establishment business, can automatically generate business by way of path, in convenience greatly improve.But still rest on the thinking of SDH in the past, just jumping figure and vector distance are had to consideration, not in conjunction with the packet characteristic of PTN business, to bandwidth resources reaction not directly perceived, user cannot understand on current network link and still also has how many resources to use.
Current each operator is in the quick networking stage of PTN, and a general EMS network can be gone up tens end PTN equipment every day, and still in thick lines way to manage, a lot of equipment is all in idle running.But PTN dilatation always has one day that stops, user does not understand available bandwidth on current network link just cannot be rationally, save the resource of utilizing each link, and when causing ample resources waste, the establishment efficiency of PTN business also cannot get a promotion.
Summary of the invention
The problem existing for prior art, the object of the present invention is to provide a kind of method and apparatus of the PTN of detecting link available bandwidth, more specifically say: while creating PTN business, the A/Z end points network element of selecting according to user, detect the available bandwidth resources of all links, so user can select the link comparatively idle through certain section of bandwidth by hand, or avoids the comparatively busy link of certain section of bandwidth, can rationally utilize the resource of link, improve the establishment efficiency of PTN business.
The method of detecting PTN link available bandwidth of the present invention, comprises the steps:
1), while creating PTN business, the end points of selecting according to user and the selection pre-defined algorithm corresponding with purt condition calculates link bandwidth;
2) read through all tunnels of link and the cir value of pseudo-line;
3) calculate the current available bandwidth of link according to the cir value of described link bandwidth, described tunnel and pseudo-line.
Further, the corresponding relation of described purt condition and pre-defined algorithm is specially:
If port does not configure CIR(Committed Information Rate, committed information rate), link bandwidth=MIN(A ports physical bandwidth, Z ports physical bandwidth);
If when port has configuration CIR and A ports physical bandwidth=Z ports physical bandwidth, the CIR of link bandwidth=MAX(A port, the CIR of Z port);
If when port has configuration CIR and A ports physical bandwidth <Z ports physical bandwidth, if the CIR of A ports physical bandwidth <Z port, link bandwidth=A ports physical bandwidth;
If when port has configuration CIR and A ports physical bandwidth <Z ports physical bandwidth, if the CIR of the band width in physical >=Z port of A port, the CIR of link bandwidth=MAX(A port, the CIR of Z port);
If when port has configuration CIR and A ports physical bandwidth >Z ports physical bandwidth, if the band width in physical of the CIR>Z port of A port, link bandwidth=Z ports physical bandwidth; Otherwise, the CIR of link bandwidth=MAX(A port, the CIR of Z port).
Further, if the current available bandwidth of described link is concrete numerical value, the algorithm of the current available bandwidth of described link is specially: current available bandwidth=link bandwidth-SUM(has the CIR in tunnel of configuration CIR)-SUM(do not configure the CIR of the pseudo-line of the tunnel carrying of CIR).
Further, if the current available bandwidth of described link is percentage, the algorithm of the current available bandwidth of described link is specially: current available bandwidth={ link bandwidth-SUM(has the CIR in tunnel of configuration CIR)-SUM(do not configure the CIR of the pseudo-line of the tunnel carrying of CIR) }/link bandwidth.
Further, if pseudo-line does not configure CIR, the CIR of pseudo-line gets 0 value.
Further, do not configure CIR if tunnel does not configure on all pseudo-line of CIR, tunnel carrying, SUM(does not configure the CIR of the pseudo-line of the tunnel carrying of CIR yet) get 0 value.
Further, after step 3), also comprise that the end points that step 4) is chosen according to user searches out all reachable paths by known path search algorithm, then calculate the current available bandwidth of all reachable paths, and obtain user and choose the current available bandwidth of optimal path and optimal path between end points according to the big or small comparative result of the current available bandwidth of all reachable paths.
Further, the current available bandwidth=MIN(of described reachable path is by the current available bandwidth of all links in path).
Further, the current available bandwidth of all reachable paths of current available bandwidth=MAX(of described optimal path).
Further, before step 1), also comprise between the end points that user is chosen and whether exist path to judge, if there is not path between the end points that user chooses, carry out abnormal show.
Further, if the current available bandwidth of all reachable paths described in step 4) is 0, carry out abnormal show.
Further, the current available bandwidth of described link and the current available bandwidth of reachable path all can show in the user interface of network management system.
Corresponding said method, the device of the available bandwidth of detecting PTN link of the present invention, comprise bandwidth resources computing module, described bandwidth resources computing module calculates link bandwidth for end points and the selection pre-defined algorithm corresponding with purt condition selected according to user, read all tunnels of carrying on link and the cir value of pseudo-line, and calculate the current available bandwidth of link according to pre-defined algorithm.
Further, described bandwidth resources computing module comprises tunnel and pseudo-line submodule and the current available bandwidth submodule of calculating link of inquiring about link bearer;
Described inquiry submodule is for reading all tunnels of carrying on link and the cir value of pseudo-line;
Described calculating sub module is calculated link bandwidth for end points and the selection pre-defined algorithm corresponding with purt condition selected according to user, and calculates the current available bandwidth of link according to the cir value of described link bandwidth, described tunnel and pseudo-line.
Further, described device also comprises service creation module, described service creation module is used for selecting end points, and utilize known path search algorithm to search out all reachable paths according to the end points of choosing, and calculate the current available bandwidth of all reachable paths, obtain user and choose the current available bandwidth of optimal path and optimal path between end points according to the big or small comparative result of the current available bandwidth of all reachable paths.
Further, described service creation module comprises calculating path bandwidth submodule, compute best paths submodule and data distributing submodule;
The end points that described calculating path bandwidth submodule is chosen for basis utilizes known path search algorithm to search out all reachable paths, and calculates the current available bandwidth of all reachable paths;
Described compute best paths submodule is chosen optimal path between end points and the current available bandwidth of optimal path for calculate user according to the big or small comparative result of the current available bandwidth of all reachable paths;
Described data distributing submodule is for being issued to equipment by the related data of the optimal path calculating.
When the present invention creates PTN business, can, according to the A/Z end points network element of user's selection, detect the available bandwidth resources of all links, be convenient to user and select the link that bandwidth resources are abundant, existing resource is the most reasonably utilized.
Brief description of the drawings
Fig. 1 is network management system networking schematic diagram;
Fig. 2 is the available bandwidth resources method for detecting flow chart of the first embodiment link;
Fig. 3 is the method flow diagram of automatically selecting optimum bandwidth resource path while creating PTN business in the second embodiment;
Fig. 4 is the structural representation of the available bandwidth resources arrangement for detecting of the 3rd embodiment link;
Fig. 5 is the apparatus structure schematic diagram of automatically selecting optimum bandwidth resource path in the 4th embodiment.
Embodiment
Technological means and effect of taking for reaching predetermined object for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, it is as follows that the present invention is described in detail.
Embodiment 1
First embodiment of the invention, a kind of method for detecting of PTN link available bandwidth, as shown in the step S103 in Fig. 2, step S104 and step S105:
Step S103, the end points of selecting according to user and the selection pre-defined algorithm corresponding with purt condition calculates link bandwidth:
If port is not specified CIR, link bandwidth=MIN(A ports physical bandwidth, Z ports physical bandwidth).
If when port has the CIR of appointment, A ports physical bandwidth=Z ports physical bandwidth, the CIR of link bandwidth=MAX(A port, the CIR of Z port).
If when port has the CIR of appointment, A ports physical bandwidth <Z ports physical bandwidth, if the CIR of A ports physical bandwidth <Z port, link bandwidth=A ports physical bandwidth; If the CIR of the band width in physical >=Z port of A port, the CIR of link bandwidth=MAX(A port, the CIR of Z port).
If when port has the CIR of appointment, A ports physical bandwidth >Z ports physical bandwidth, if the band width in physical of the CIR>Z port of A port, link bandwidth=Z ports physical bandwidth; If the band width in physical of the CIR<=Z port of A port, the CIR of link bandwidth=MAX(A port, the CIR of Z port).
Wherein, link bandwidth=MIN(A ports physical bandwidth, Z ports physical bandwidth) the meaning be that link bandwidth equals the minimum value in A ports physical bandwidth and Z ports physical bandwidth;
The CIR of link bandwidth=MAX(A port, the CIR of Z port) the meaning be that link bandwidth equals the maximum in the CIR of A port and the CIR of Z port.
Step S104, webmaster is inquired about all tunnels and the pseudo-line of all link bearer, and reads the cir value of tunnel and pseudo-line, generates a hierarchical list.
| Link 1, link bandwidth, current available bandwidth | Tunnel 1, CIR | Pseudo-line 1, CIR |
| … | ||
| Pseudo-line K, CIR | ||
| … | ||
| Tunnel X, CIR | Pseudo-line 1, CIR | |
| … | ||
| Pseudo-line L, CIR | ||
| … | ||
| Link A, link bandwidth, current available bandwidth | Tunnel 1, CIR | Pseudo-line 1, CIR |
| … | ||
| Pseudo-line M, CIR | ||
| … | ||
| Tunnel Y, CIR | Pseudo-line 1, CIR | |
| … | ||
| Pseudo-line N, CIR |
Step S105, calculates the current available bandwidth of each link according to pre-defined algorithm:
Current available bandwidth=link bandwidth-the SUM(of link has the CIR in tunnel of configuration CIR)-SUM(do not configure the CIR of the pseudo-line of the tunnel carrying of CIR).
If pseudo-line does not configure CIR, the CIR of pseudo-line gets 0 value.
If tunnel does not configure on all pseudo-line of CIR, tunnel carrying and do not configure CIR yet, SUM(does not configure the CIR of the pseudo-line of the tunnel carrying of CIR) get 0 value.
Wherein, SUM(has the CIR in tunnel of configuration CIR) the meaning be the CIR summation in the tunnel to there being configuration CIR;
SUM(does not configure the CIR of the pseudo-line of the tunnel carrying of CIR) the meaning be the CIR summation of the pseudo-line of the tunnel carrying to not configuring CIR.
Calculate the current available bandwidth value of link according to the cir value of the tunnel reading in the link bandwidth calculating in S103 and S104 and pseudo-line, it can show on user's side interface of webmaster, as shown in Figure 1.
Alternatively, the current available bandwidth of link also can adopt percentage form to show, its computational methods are current available bandwidth={ link bandwidth-SUM(has the CIR in tunnel that specifies CIR)-SUM(do not specify the CIR of the pseudo-line of the tunnel carrying of CIR) }/link bandwidth.
Preferably, before step S103, can also select whether to exist path to judge between network element end points to user, can reduce amount of calculation.User can select A/Z end points network element in NMS user interface side.
Embodiment 2
Second embodiment of the invention, a kind of method of automatically selecting optimum bandwidth resource path while creating PTN business, as shown in Figure 3:
Step S201, user, on the human-computer interaction interface of webmaster side, selects A/Z end points network element; Step S201 is identical with step S101 in embodiment 1.
Step S202, webmaster first judges between the A/Z network element that user selects whether do not have path, if so, performs step S211, otherwise execution step S203.Step S202 is identical with step S102 in embodiment 1.
Step S203, webmaster is inquired about all tunnels and the pseudo-line of all link bearer, and reads the cir value of tunnel and pseudo-line, generates a hierarchical list, and the pattern of hierarchical list is specifically referring to embodiment mono-.
Step S204, calculates the current available bandwidth of each link, and algorithm is referring to embodiment mono-.
Step S205, webmaster carries out routing algorithm search according to the A/Z end points network element of choosing and current available bandwidth above, such as searching out N bar reachable path SNC1, SNC2, the a lot of patents of SNCn(path search algorithm are existing, do not do too much explanation herein), wherein certain paths is through M section link LINK1, LINK2, LINKm, the current available bandwidth of the current available bandwidth=MIN(LINK1 of this paths, the current available bandwidth of LINK2, the current available bandwidth of LINKm), calculate the available bandwidth of all reachable paths, so just can find optimal path is exactly a paths of available bandwidth maximum in reachable path, the correspondingly current available bandwidth of the available bandwidth=MAX(SNC1 of optimal path, the current available bandwidth of SNC2, the current available bandwidth of SNCn).
Wherein, the current available bandwidth of the current available bandwidth=MIN(LINK1 in path, the current available bandwidth of LINK2, the current available bandwidth of LINKm) the meaning be the current available bandwidth that the current available bandwidth in path equals LINK1, the current available bandwidth of LINK2 ..., the minimum value in the current available bandwidth of LINKm;
The current available bandwidth of the available bandwidth=MAX(SNC1 of optimal path, the current available bandwidth of SNC2, the current available bandwidth of SNCn) the meaning be the current available bandwidth that the available bandwidth of optimal path equals SNC1, the current available bandwidth of SNC2,, the maximum in the current available bandwidth of SNCn.
Preferably, step S206, if the available bandwidth of all reachable paths is all 0 between the A/Z end points network element of choosing, optimal path bandwidth is 0, forwards step S211 to, points out extremely webmaster side direction user.
Preferably, step S207, if the business setting creating bandwidth requirement, and the available bandwidth of the CIR> optimal path of business need, point out the value of the current maximum available bandwidth of user and advise that user resets bandwidth requirement, be turned back to step S205.
Preferably, step S208, webmaster is issued to configuration data on equipment.
Preferably, step S209, whether judgement issues equipment failed, if so, perform step S208, otherwise Mission Success finishes.
Preferably, step S211, points out extremely webmaster side direction user, and flow process finishes.
Embodiment 3
Third embodiment of the invention is corresponding with method described in embodiment 1, a kind of arrangement for detecting of PTN link available bandwidth, as shown in Figure 3, comprise bandwidth resources computing module 30, described bandwidth resources computing module 30 calculates link bandwidth for end points and the selection pre-defined algorithm corresponding with purt condition selected according to user, read all tunnels of carrying on link and the cir value of pseudo-line, and calculate the current available bandwidth of link according to pre-defined algorithm.
Preferably, described bandwidth resources computing module 30 comprises inquiry submodule 301 and calculating sub module 302;
Described inquiry submodule 301 is for reading all tunnels of carrying on link and the cir value of pseudo-line; Read all tunnels of carrying on all links and the cir value of pseudo-line and can generate a hierarchical list, concrete pattern is referring to the form in embodiment 1;
Described calculating sub module 302 is calculated link bandwidth for end points and the selection pre-defined algorithm corresponding with purt condition selected according to user, and calculating the current available bandwidth of link according to the cir value of described link bandwidth, described tunnel and pseudo-line, algorithm is according to the method described in embodiment 1.
Embodiment 4
Fourth embodiment of the invention is corresponding with method described in embodiment 2, a kind of device of automatically selecting optimum bandwidth resource path while creating PTN business, as shown in Figure 4, comprise bandwidth resources computing module 30 and end-to-end establishment business module 40, described bandwidth resources computing module 30 is identical with the bandwidth resources computing module in embodiment 3, its than the device in embodiment 3 many end-to-end establishment business module 40, described end-to-end establishment business module 40 is for carrying out routing algorithm search according to the A/Z end points network element chosen (may also comprise must through link and avoid link) and current available bandwidth above, search out an optimal path (available bandwidth absolute value maximum or available bandwidth percentage maximum), specifically comprise:
The end points that calculating path bandwidth submodule 401 is chosen for basis utilizes known path search algorithm to search out all reachable paths, and calculates the current available bandwidth of all reachable paths; Circular is referring to the method in embodiment 2.
Compute best paths submodule 402 is chosen optimal path between end points and the current available bandwidth of optimal path for calculate user according to the big or small comparative result of the current available bandwidth of all reachable paths; Circular is referring to the method in embodiment 2.
The manual preferably idle link of above-mentioned route searching support, avoid busy link, also support the path of automatic search available bandwidth absolute value maximum or available bandwidth percentage maximum.
Data distributing submodule 403 is mutual with network element, for the related data of the optimal path calculating is issued to equipment.
By the explanation of embodiment, should be able to more deeply and concrete understanding for technological means and effect of reaching predetermined object and taking the present invention, but appended diagram be only to provide with reference to the use of explanation, be not used for the present invention to be limited.
Adopt technique scheme, the present invention at least has following advantages:
With existing establishment business contrast, the invention provides a kind of method and the device that can detect PTN link available bandwidth.On the basis of detecting PTN link available bandwidth, the available bandwidth of link intuitively can also be shown in NMS user interface side, take full advantage of the convenience of webmaster showing resource and overall computing capability, even can not need user intervention automatic search to go out the path that meets demand most, reducing the network planning drops into, for original resource can be fully, rationally utilize, preferably idle link, avoid busy link, operation and system processing procedure are simple, can greatly improve the efficiency of applicable business of establishment.
Claims (16)
1. the method for detecting PTN link available bandwidth, is characterized in that, comprises the steps:
1), while creating PTN business, the end points of selecting according to user and the selection pre-defined algorithm corresponding with purt condition calculates link bandwidth;
2) read through all tunnels of link and the cir value of pseudo-line;
3) calculate the current available bandwidth of link according to the cir value of described link bandwidth, described tunnel and pseudo-line.
2. the method for detecting PTN link available bandwidth as claimed in claim 1, is characterized in that, the corresponding relation of described purt condition and pre-defined algorithm is specially:
If port does not configure CIR, link bandwidth=MIN(A ports physical bandwidth, Z ports physical bandwidth);
If when port has configuration CIR and A ports physical bandwidth=Z ports physical bandwidth, the CIR of link bandwidth=MAX(A port, the CIR of Z port);
If when port has configuration CIR and A ports physical bandwidth <Z ports physical bandwidth, if the CIR of A ports physical bandwidth <Z port, link bandwidth=A ports physical bandwidth;
If when port has configuration CIR and A ports physical bandwidth <Z ports physical bandwidth, if the CIR of the band width in physical >=Z port of A port, the CIR of link bandwidth=MAX(A port, the CIR of Z port);
If when port has configuration CIR and A ports physical bandwidth >Z ports physical bandwidth, if the band width in physical of the CIR>Z port of A port, link bandwidth=Z ports physical bandwidth; Otherwise, the CIR of link bandwidth=MAX(A port, the CIR of Z port).
3. the method for detecting PTN link available bandwidth as claimed in claim 1, it is characterized in that, if the current available bandwidth of described link is concrete numerical value, the algorithm of the current available bandwidth of described link is specially: current available bandwidth=link bandwidth-SUM(has the CIR in tunnel of configuration CIR)-SUM(do not configure the CIR of the pseudo-line of the tunnel carrying of CIR).
4. the method for detecting PTN link available bandwidth as claimed in claim 1, it is characterized in that, if the current available bandwidth of described link is percentage, the algorithm of the current available bandwidth of described link is specially: current available bandwidth={ link bandwidth-SUM(has the CIR in tunnel of configuration CIR)-SUM(do not configure the CIR of the pseudo-line of the tunnel carrying of CIR) }/link bandwidth.
5. the method for detecting PTN link available bandwidth as claimed in claim 4, is characterized in that, if pseudo-line does not configure CIR, the CIR of pseudo-line gets 0 value.
6. the method for detecting as claimed in claim 4 PTN link available bandwidth, is characterized in that, does not also configure CIR if tunnel does not configure on all pseudo-line of CIR, tunnel carrying, and SUM(does not configure the CIR of the pseudo-line of the tunnel carrying of CIR) get 0 value.
7. the method for detecting PTN link available bandwidth as claimed in claim 1, is characterized in that, after step 3), also comprises:
The end points that step 4) is chosen according to user searches out all reachable paths by known path search algorithm, then calculate the current available bandwidth of all reachable paths, and obtain user and choose the current available bandwidth of optimal path and optimal path between end points according to the big or small comparative result of the current available bandwidth of all reachable paths.
8. the method for detecting PTN link available bandwidth as claimed in claim 7, is characterized in that, the current available bandwidth=MIN(of described reachable path is by the current available bandwidth of all links in path).
9. the method for detecting PTN link available bandwidth as claimed in claim 7, is characterized in that the current available bandwidth of all reachable paths of current available bandwidth=MAX(of described optimal path).
10. the method for detecting PTN link available bandwidth as claimed in claim 7, is characterized in that, if the current available bandwidth of all reachable paths described in step 4) is 0, carries out abnormal show.
The method of 11. detecting PTN link available bandwidths as claimed in claim 7, is characterized in that, the current available bandwidth of described link and the current available bandwidth of reachable path all can show in the user interface of network management system.
The method of 12. detecting PTN link available bandwidths as claimed in claim 1, is characterized in that, before step 1), also comprises:
Between the end points that user is chosen, whether exist path to judge, if there is not path between the end points that user chooses, carry out abnormal show.
Detect the device of the available bandwidth of PTN link for 13. 1 kinds, it is characterized in that, comprising:
Bandwidth resources computing module, described bandwidth resources computing module calculates link bandwidth for end points and the selection pre-defined algorithm corresponding with purt condition selected according to user, read all tunnels of carrying on link and the cir value of pseudo-line, and calculate the current available bandwidth of link according to pre-defined algorithm.
The device of the available bandwidth of 14. detecting PTN links as claimed in claim 13, is characterized in that, described bandwidth resources computing module comprises inquiry submodule and calculating sub module;
Described inquiry submodule is for reading all tunnels of carrying on link and the cir value of pseudo-line;
Described calculating sub module is calculated link bandwidth for end points and the selection pre-defined algorithm corresponding with purt condition selected according to user, and calculates the current available bandwidth of link according to the cir value of described link bandwidth, described tunnel and pseudo-line.
The device of the available bandwidth of 15. detecting PTN links as claimed in claim 13, it is characterized in that, described device also comprises service creation module, described service creation module is used for selecting end points, and utilize known path search algorithm to search out all reachable paths according to the end points of choosing, and calculate the current available bandwidth of all reachable paths, obtain user and choose the current available bandwidth of optimal path and optimal path between end points according to the big or small comparative result of the current available bandwidth of all reachable paths.
The device of the available bandwidth of 16. detecting PTN links as claimed in claim 15, is characterized in that, described service creation module comprises calculating path bandwidth submodule, compute best paths submodule and data distributing submodule;
The end points that described calculating path bandwidth submodule is chosen for basis utilizes known path search algorithm to search out all reachable paths, and calculates the current available bandwidth of all reachable paths;
Described compute best paths submodule is chosen optimal path between end points and the current available bandwidth of optimal path for calculate user according to the big or small comparative result of the current available bandwidth of all reachable paths;
Described data distributing submodule is for being issued to equipment by the related data of the optimal path calculating.
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| CN201310087483.9A CN104065522B (en) | 2013-03-19 | 2013-03-19 | A kind of method and device of detecting PTN link available bandwidths |
| PCT/CN2014/073674 WO2014146576A1 (en) | 2013-03-19 | 2014-03-19 | Method and device for detecting available bandwidth of ptn link |
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| CN201310087483.9A CN104065522B (en) | 2013-03-19 | 2013-03-19 | A kind of method and device of detecting PTN link available bandwidths |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2014146576A1 (en) | 2014-09-25 |
| CN104065522B (en) | 2017-12-12 |
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