CN101834759A - Detection method of binding link and distributed equipment - Google Patents
Detection method of binding link and distributed equipment Download PDFInfo
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- CN101834759A CN101834759A CN201010153776A CN201010153776A CN101834759A CN 101834759 A CN101834759 A CN 101834759A CN 201010153776 A CN201010153776 A CN 201010153776A CN 201010153776 A CN201010153776 A CN 201010153776A CN 101834759 A CN101834759 A CN 101834759A
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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
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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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
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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Abstract
The invention discloses a detection method of a binding link and distributed equipment, wherein the detection method comprises the following steps: a sending terminal equipment sends a connectivity detection CC message to receiving terminal equipment through all member links in a binding link; when the receiving terminal equipment does not receive the CC message of any member link within a preset time, the state of the member link is determined to be abnormal; and when the receiving terminal equipment judges the states of all the member links are abnormal, the state of the binding link is determined to be abnormal. The invention can realize detection of the connectivity of the binding link among the distributed equipment in a T-MPLS network.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of detection method and distributed apparatus of bundle link.
Background technology
T-MPLS (transmit MPLS (Multi-Protocol Label Switching, multiprotocol label switching)) technology is a kind of novel based on MPLS, connection-oriented grouping tranmission techniques for what adapt to that operator proposes the demand of Packet Transport Network.T-MPLS provides a kind of connection-oriented implementation of simplification based on the IP/MPLS technology and the standard of extensive use.T-MPLS has removed among the MPLS with towards being connected and has used irrelevant function, has increased more very important functions for transmitting net simultaneously.
Different with MPLS, T-MPLS does not support connectionless-mode, and is simpler than MPLS in the realization, is easier to operation and management.T-MPLS has cancelled functional characteristic with L3 relevant with the IP route among the MPLS, and its equipment realizes satisfying the demand of operator to low-cost and jumbo next-generation packet network.T-MPLS has followed existing thought based on circuit switching transmission net, adopts architectural framework, management and the operational mode identical with it.T-MPLS will be used for the transmission net of following operator packetizing.
Many design philosophys of T-MPLS are widely used in traditional SDH (Synchronous DigitalHierarchy, SDH (Synchronous Digital Hierarchy)) network, and operator also is based on this thought and comes the operation and management existing network.Therefore, can think that T-MPLS is that ripe TDM transmits net operating mechanism and the combination of Packet Based Network technology (MPLS) reliably.In addition; T-MPLS is to the main improvement of MPLS; as bidirectional LSP (LabelSwitching Path; label switched path), end-to-end LSP protection and powerful OAM (Operation Administration and Maintenance; Operations, Administration and Maintenance) mechanism etc.; to realize that the net resources effective is controlled and use to transmitting, thereby realize the reduction of network operation cost.OAM is the most crucial problem of T-MPLS, also is the basic reason that change appears in the T-MPLS standard.In order to improve the ability of discovery of fault, defined detection of connectivity (CC) function among the T-MPLS.
As shown in Figure 2, the essence of binding technology is with several physical links " combination " one-tenth data path in logic of two equipment rooms, is called a bundle link.This link logically is an integral body, and the details of inner composition and transmission data is transparent to top service.Several physical links of bundle link inside are finished the transmitting-receiving task of data and backup mutually jointly.As long as also there is the member of energy operate as normal, whole bundle link just can not lose efficacy.
Directly be connected by physical port with as shown in Figure 1 equipment room and compare, bundle link has following significant advantage:
1) improve link availability: in the bundle link, the mutual dynamic backup of Member Link.When a certain Member Link interrupted, other Member Link can be taken over its work rapidly.Different with Spanning-Tree Protocol, the process that bundle link is enabled backup is to being sightless outside the polymerization, and enables backup procedure only in bundle link, and irrelevant with other link, switching can be finished in several milliseconds.
2) increase link capacity: another tangible advantage of binding technology is the method that a kind of raising link transmission rate of economy is provided for the user.By bundling many physical links, user's existing equipment of needn't upgrading just can obtain the data link of bigger bandwidth, and its capacity equals each physical link capacity sum.Bonding module is distributed to different Member Links according to certain algorithm with service traffics, realizes the load balancing function of link level.
Under some situation, the unique method of binding technology or even raising link capacity.For example when the equipment on the market all can not provide the link that is higher than 10G, the user can obtain the transmission line of bandwidth greater than 10G with two 10G link aggregations.
In addition, need to limit the capacity of transmission line under the specific network environment, can not be too low, influence transmission speed, can not be too high, surpass the disposal ability of network.But prior art only supports that all link bandwidth is increasing of the order of magnitude with 10, as 10M, 100M, 1000M etc.And by the binding technology n bar physical link is tied up, just can obtain link preferably, n times bandwidth.
Have benefited from above-mentioned advantage, bundle link is widely used in the existing network of T-MPLS.
But in existing scheme, the CC function of distributed apparatus only can support a physical port to send protocol massages, promptly only can carry out detection of connectivity by the direct-connected physical link of physical port, and can't realize carrying out detection of connectivity for bundle link to equipment room.
Summary of the invention
Main purpose of the present invention is to provide a kind of detection method and distributed apparatus of bundle link, to address the above problem at least.
According to an aspect of the present invention, provide a kind of detection method of bundle link, having comprised: sending ending equipment sends detection of connectivity CC message by all Member Links in the bundle link to receiving device; When receiving device did not receive the CC message of arbitrary Member Link in the given time, the state of judging this Member Link was for unusual; Judge the state of all Member Links when receiving device and be when unusual that the state of then judging bundle link is for unusual.
According to a further aspect in the invention, provide a kind of distributed apparatus, comprised ply-yarn drill, ply-yarn drill comprises: receiver module is used for the detection of connectivity CC message of receiving end/sending end equipment by all Member Links transmissions of bundle link; The Member Link condition judgment module is used for when not receiving the CC message of arbitrary Member Link in the given time, and the state of judging this Member Link is for unusual; Also be used for being when unusual when the state of judging all Member Links, the state of then judging bundle link is for unusual.
By the present invention, receiving device detects the CC message of sending ending equipment by all Member Links transmissions of bundle link, the state of judging this Member Link when not receiving a certain CC message on the Member Link in the given time is for unusual, when being, the state of judging all Member Links thinks that the state of this bundle link is for unusual when unusual, solved correlation technique and can't realize problem, thereby can realize the detection of the connectedness of the bundle link between distributed apparatus in the T-MPLS network for the detection of connectivity of bundle link.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is by the direct-connected schematic diagram of physical port according to the equipment room of correlation technique;
Fig. 2 is the schematic diagram that connects by bundle interface according to the equipment room of correlation technique;
Fig. 3 is the schematic diagram that connects by bundle link according to distributed apparatus in the T-MPLS network of the embodiment of the invention;
Fig. 4 is the flow chart according to the detection method of the bundle link of the embodiment of the invention one;
Fig. 5 is the flow chart according to the detection of connectivity of the bundle link of the distributed apparatus of the embodiment of the invention two;
Fig. 6 is the connection diagram according to the bundle interface of router and inter-exchange between certain provider backbone of the embodiment of the invention three and Access Network; And
Fig. 7 is the structural representation according to the distributed apparatus of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
As shown in Figure 3, in the T-MPLS network, communicate by bundle link 1 and bundle link 2 between distributed apparatus A and the distributed apparatus B.
Fig. 4 is according to the flow chart of the detection method of the bundle link of the embodiment of the invention one, may further comprise the steps:
Step S402, sending ending equipment sends detection of connectivity CC message by all Member Links in the bundle link to receiving device;
Step S404, when receiving device did not receive the CC message of arbitrary Member Link in the given time, the state of judging this Member Link was for unusual;
Step S406 judges the state of all Member Links when receiving device and is when unusual, and the state of then judging bundle link is for unusual.
In this embodiment; receiving device detects the CC message of sending ending equipment by all Member Links transmissions of bundle link; the state of judging this Member Link when not receiving a certain CC message on the Member Link in the given time is unusual (taking place unusual or fault); when being, the state of judging all Member Links thinks that the state of this bundle link is unusual (taking place unusual or fault) when unusual; the CC function that has solved the distributed apparatus of correlation technique only can support a physical port to send protocol massages; promptly only can carry out detection of connectivity by the direct-connected physical link of physical port, and can't realize problem for the detection of connectivity of bundle link to equipment room.Use this embodiment can realize the detection of the connectedness of the bundle link between distributed apparatus in the T-MPLS network.The physical link (every physical link is called Member Link) that wherein, can comprise two or more in the bundle link.
Preferably, step S402 comprises: sending ending equipment sends the CC message by the ply-yarn drill at all the Member Link places on the sending ending equipment.All ply-yarn drills at the member port place of sending ending equipment master control notice bundle link periodically (as periodically) send the CC message simultaneously.
This embodiment provides sending ending equipment to send the specific embodiments of CC message.Send the CC message simultaneously with all ply-yarn drills at the corresponding member port of all Member Links place of bundle link and judge the state and the final state of judging bundle link of Member Link by the reception condition that detects the CC message to realize receiving device.
Preferably, step S404 comprises: receiving device also detects reception condition simultaneously by the ply-yarn drill reception CC message at arbitrary Member Link place on the receiving device; When receiving device did not receive the CC message in the given time, the state of judging this Member Link was for unusual.
The specific embodiments that this embodiment provides receiving device that the state of Member Link is detected.Ply-yarn drill directly detects the reception condition of CC message, and makes judgement, judges very fast.By each ply-yarn drill to the reception condition of CC message simultaneously (promptly concurrently) detect, for the detection of bundle link can not be subjected to certain/influence of the plug of some member's ply-yarn drill.
Preferably, in above-mentioned method, also comprise: the ply-yarn drill at arbitrary Member Link place backs up the state of each self-corresponding Member Link mutually.
Like this, the mutual backup (being full backup) of the state of the Member Link by bundle link, as start in back or the above-mentioned testing process, the state of finding certain bar Member Link is then to notify the mutual backup of the ply-yarn drill of other Member Links with the state of realization Member Link unusually.In addition, the mutual backup of the state by Member Link can also make the detection of connectivity of bundle link can not be subjected to the influence of the plug of a certain the pairing ply-yarn drill of Member Link.
Preferably, step S406 comprises: when the ply-yarn drill of receiving device by arbitrary Member Link place on the receiving device, when not receiving the CC message in the given time, the ply-yarn drill on the receiving device judges whether to exist normal Member Link; If there is not normal Member Link, then the ply-yarn drill on the receiving device is notified the main control module in the receiving device, and the state of bundle link is unusual.That is, certain ply-yarn drill finds that the state of all fraternal Member Links of bundle link all be unusual on receiving device, and oneself also detect links of physical ports of same unusually after, report bundle link unusual.At this moment, this bundle link can not carry out the transmission of message.When there was normal Member Link in the receiving device judgement, the state of judging this bundle link was for normal.That is, as long as the state that a Member Link is arranged in the bundle link is for normal, the state of whole bundle link is normally, can carry out the transmission of message.
The state that the preferred embodiment provides receiving device to judge bundle link is the specific embodiments of unusual (being that unusual or fault takes place bundle link).Owing to back up the state of its pairing Member Link between the ply-yarn drill mutually, it is the state that all has all Member Links on each ply-yarn drill, therefore, when some ply-yarn drills judge that the state of its pairing Member Link is unusual, this ply-yarn drill can judge directly whether the state of other Member Link is unusually, if it is unusual to judge that then this bundle link takes place.The time of judgement can be greatly shortened in the judgement of directly carrying out the state of bundle link by ply-yarn drill, and judgement speed is very fast, and satisfies the demand of correlation technique for reliability requirement higher (as speech business etc.).
Preferably, in above-mentioned method, comprise: if there is a normal Member Link, then the ply-yarn drill at the unusual Member Link place on the receiving device state of broadcasting its corresponding Member Link to the ply-yarn drill at other Member Link place except that unusual Member Link on the receiving device is unusual message.
The preferred embodiment provides receiving device to judge that the state of bundle link is normal specific embodiments.Owing to back up the state of its pairing Member Link between the ply-yarn drill mutually, it is the state that all has all Member Links on each ply-yarn drill, therefore, when some ply-yarn drills judge that the state of its pairing Member Link is unusual, this ply-yarn drill can judge directly whether the state of other Member Link is unusually, if not, judge that then the state of this bundle link is for normal.The time of judgement can be greatly shortened in the judgement of directly carrying out the state of bundle link by ply-yarn drill, and judgement speed is very fast, and satisfies the demand of correlation technique for reliability requirement higher (as speech business etc.).When judge to also have state be normal other bundle links, can directly transmit switching of data, be unlikely to make the transmission interruption of data.
As shown in Figure 3, distributed apparatus A and distributed apparatus B be transmitting terminal and receiving terminal each other, adopts above-mentioned method that bundle link 1 and bundle link 2 are carried out detection of connectivity.
Embodiment two is that router-A and distributed apparatus B are that to be example describe the detection method of bundle link of the present invention router B with the distributed apparatus A among Fig. 3.Wherein, bearer service flow between router-A and the router B, in order to prevent because the long-time service traffics that physical link interrupts causing lose, between router-A and router B by bundle interface bearer service (promptly passing through bundle link 1 and bundle link 2 bearer services); Carry out simultaneously bundle interface again and back up and protect bundle interface itself between router-A and router B, this just need carry out the status detection of bundle link by the CC function of deployment T-MPLS OAM.
Fig. 5 is the flow chart according to the detection of connectivity of the bundle link of the distributed apparatus of the embodiment of the invention two.At first, need on router-A and router B, create and dispose bundle link 1 and bundle link 2 respectively, physical interface is tied to (being about to physical link adds in the corresponding bundle link) in the corresponding bundle interface; And then the CC function (promptly starting the CC measuring ability of bundle link) of disposing T-MPLSOAM is used for detecting respectively the state of bundle link 1 and bundle link 2.
As shown in Figure 5, the flow process based on the detection method of the bundle link of embodiment two specifically may further comprise the steps:
Step S502, configuration starts the CC measuring ability of T-MPLSOAM on router-A and/or router B;
Step S504, the CC functional parameter of the ply-yarn drill at the member port place of all Member Link correspondences of master control notice bundle link 1 and bundle link 2, ply-yarn drill send the CC message simultaneously and begin simultaneously according to this CC functional parameter and detect;
Step S506 if a certain the pairing ply-yarn drill of Member Link in bundle link 1 or the bundle link 2 do not received the CC message of opposite end in detection time (being the above-mentioned scheduled time), then can produce the links of physical ports of same anomalous event;
Step S508, at the links of physical ports of same anomalous event, need handle respectively according to the detected state of fraternal Member Link, this ply-yarn drill judges that the state that whether has detection in its bundle link that belongs to (being assumed to be bundle link 1) is normal other fraternal Member Links, if, then change step S510 over to, if not, then change step S512 over to;
Step S510, pairing other the detected state (promptly the state of the pairing Member Link of this ply-yarn drill is unusual message) of this Member Link of ply-yarn drill of this ply-yarn drill broadcast announcement bundle link 1;
Step S512, this ply-yarn drill directly notify this bundle link 1 integrality of main control device unusual.
Fig. 6 is the connection diagram according to the bundle interface of router and inter-exchange between certain provider backbone of the embodiment of the invention three and Access Network.Certain operator disposes bundle interface and comes bearer service (promptly coming bearer service by bundle link) between backbone network and Access Network, because certain unusual hope that inserts sidelinks is notified to the opposite side access device, need detect bundle link by the CC function of T-MPLS OAM.
As shown in Figure 6, router-A, router B and router C form the backbone network of operator, and switch A and switch b are access side device.Configuration deployment bundle interface and bundle link between switch A and router-A.Because the opposite side switch b wishes to know the state of bundle link between switch A and router-A, so between switch A and router-A, dispose the state of the CC function of T-MPLS OAM with the detection bundle link.
Step 1, switch A and router-A configuration bundle interface 1, and physical interface tied this bundle interface 1 (promptly create and dispose bundle link 1 (being the bundle link of bundle interface 1 correspondence) respectively on switch A and router-A, physical link (being above-mentioned physical interface corresponding physical link) is added in the corresponding bundle link 1);
Step 2, the CC function that configuration bundle interface 1 starts T-MPLS OAM is used for detecting the state of bundle link 1;
Step 3, in a certain moment, the state that detects bundle link 1 as if the detection method according to above-mentioned bundle link then continues to transmit customer flow for normal;
Step 4, in a certain moment, if detect bundle link 1 generation unusually according to the detection method of above-mentioned bundle link, then the state of bundle link 1 is set to unusually, and blocks the forwarding of customer flow.
Fig. 7 is the structural representation according to the distributed apparatus of the embodiment of the invention.
As shown in Figure 7, this distributed apparatus 1 comprises: ply-yarn drill 10, and it comprises:
Member Link condition judgment module 102 is used for when receiver module 101 does not receive the CC message of arbitrary Member Link in the given time, and the state of judging this Member Link is for unusual; Also be used for being when unusual when the state of judging all Member Links, the state of then judging bundle link is for unusual.
Preferably, ply-yarn drill 10 also comprises: sending module 103, be used for being when unusual at the state of judging all Member Links in Member Link condition judgment module 102, and the state of notice main control module 20 bundle links is unusual; Also comprise in above-mentioned distributed apparatus 1: main control module 20, the binding chain circuit state that is used to receive ply-yarn drill 10 is unusual notice, and carries out subsequent treatment.
Wherein, Member Link condition judgment module 102 also is used for judging whether to exist normal Member Link when receiver module 101 does not receive the CC message in the given time.
Preferably, sending module 103 also is used for when there is normal Member Link in 102 judgements of Member Link condition judgment module, and the state of broadcasting its corresponding Member Link to the ply-yarn drill at other Member Link place except that unusual Member Link on the distributed apparatus 1 is unusual message.
The detection method of the bundle link that the distributed apparatus employing of the foregoing description is above-mentioned detects the connectedness of bundle link.
From above description, as can be seen, the present invention has realized following technique effect: the invention solves correlation technique and can't realize problem for the detection of connectivity of bundle link, thereby can realize the detection of the connectedness of the bundle link between distributed apparatus in the T-MPLS network, the state of the Member Link of bundle link backs up mutually, and can not be subjected to the plug influence of the ply-yarn drill of Member Link correspondence in the bundle link.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the detection method of a bundle link is characterized in that, comprising:
Sending ending equipment sends detection of connectivity CC message by all Member Links in the bundle link to receiving device;
When described receiving device did not receive the CC message of arbitrary described Member Link in the given time, the state of judging this Member Link was for unusual;
Judge the state of described all Member Links when described receiving device and be when unusual that the state of then judging described bundle link is for unusual.
2. method according to claim 1 is characterized in that, sending ending equipment sends detection of connectivity CC message by all Member Links in the bundle link to receiving device and comprises:
Described sending ending equipment sends described CC message by the ply-yarn drill at all the Member Link places on the described sending ending equipment.
3. method according to claim 1 is characterized in that, when described receiving device did not receive the CC message of arbitrary described Member Link in the given time, the state of judging this Member Link was for comprising unusually:
The ply-yarn drill of described receiving device by arbitrary Member Link place on the described receiving device receives described CC message and simultaneously reception condition detected;
When described receiving device did not receive described CC message in the described scheduled time, the state of judging this Member Link was for unusual.
4. according to claim 2 or 3 described methods, it is characterized in that also comprise: the ply-yarn drill at described arbitrary Member Link place backs up the state of each self-corresponding Member Link mutually.
5. method according to claim 1 is characterized in that, judges the state of described all Member Links when described receiving device and be when unusual that the state of then judging described bundle link is for comprising unusually:
When the ply-yarn drill of described receiving device by arbitrary Member Link place on the described receiving device, when not receiving the CC message in the described scheduled time, the ply-yarn drill on the described receiving device judges whether to exist normal Member Link;
If there is not normal Member Link, the ply-yarn drill on the then described receiving device is notified the main control module in the described receiving device, and the state of described bundle link is unusual.
6. method according to claim 5, it is characterized in that, if there is normal Member Link, the state that the ply-yarn drill at the unusual Member Link place on the then described receiving device is broadcasted its corresponding Member Link to the ply-yarn drill at other Member Link place except that described unusual Member Link on the described receiving device is unusual message.
7. a distributed apparatus is characterized in that, comprises ply-yarn drill, and described ply-yarn drill comprises:
Receiver module is used for the detection of connectivity CC message of receiving end/sending end equipment by all Member Links transmissions of bundle link;
The Member Link condition judgment module is used for when not receiving the CC message of arbitrary described Member Link in the given time, and the state of judging this Member Link is for unusual; Also be used for being when unusual when the state of judging all described Member Links, the state of then judging described bundle link is for unusual.
8. distributed apparatus according to claim 7, it is characterized in that, described ply-yarn drill also comprises: sending module is used for judging that in described Member Link condition judgment module the state of all described Member Links is when unusual that the state of the described bundle link of notice main control module is unusual;
Described distributed apparatus also comprises: described main control module, the described binding chain circuit state that is used to receive described ply-yarn drill is unusual notice, and carries out subsequent treatment.
9. distributed apparatus according to claim 7 is characterized in that, when described Member Link condition judgment module also was used for not receiving the CC message in the described scheduled time, judges whether to exist normal Member Link.
10. distributed apparatus according to claim 9, it is characterized in that, described sending module also is used for when there is normal Member Link in described Member Link condition judgment module judgement, and the state of broadcasting its corresponding Member Link to the ply-yarn drill at other Member Link place except that described unusual Member Link on the described receiving device is unusual message.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010153776A CN101834759A (en) | 2010-04-21 | 2010-04-21 | Detection method of binding link and distributed equipment |
| PCT/CN2011/072010 WO2011131069A1 (en) | 2010-04-21 | 2011-03-21 | Binding links detection method and distributed device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010153776A CN101834759A (en) | 2010-04-21 | 2010-04-21 | Detection method of binding link and distributed equipment |
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| CN101834759A true CN101834759A (en) | 2010-09-15 |
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| WO2011131069A1 (en) * | 2010-04-21 | 2011-10-27 | 中兴通讯股份有限公司 | Binding links detection method and distributed device |
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| CN108494677A (en) * | 2018-03-26 | 2018-09-04 | 新华三技术有限公司 | The binding method and device of link |
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