CN101977077A - 1+1 protection method and failure detection device - Google Patents
1+1 protection method and failure detection device Download PDFInfo
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- CN101977077A CN101977077A CN2010105088877A CN201010508887A CN101977077A CN 101977077 A CN101977077 A CN 101977077A CN 2010105088877 A CN2010105088877 A CN 2010105088877A CN 201010508887 A CN201010508887 A CN 201010508887A CN 101977077 A CN101977077 A CN 101977077A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
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Abstract
The invention discloses a 1+1 protection method and a failure detection device. The method comprises the following steps: when a failure detection point outside the protected domain detects a fault warning, based on that the current service is borne by a working path or a protection path, the failure detection point determines that the fault warning is a working fault warning or a protection fault warning; the fault warning is determined to be about fault appearance or fault disappearance according to the fault state; when a fault appears, the working/protection fault treatment is performed; and when a fault disappears, the working/protection warning disappearance and the protection/working warning disappearance of the failure detection point outside the protected domain are set in sequence. By using the method of the invention, the failure detection point outside the protected domain is fully utilized and the system is protected better.
Description
Technical field
The present invention relates to the resist technology in the optical transport network (OTN), refer to a kind of 1+1 protection method and failure detector especially.
Background technology
Typical 1+1 APS (APS) system comprises fault detection unit (placing fault detecting point), performance element and three parts of control unit.Wherein, fault detection unit is used for detection failure, and with detected signalling trouble control unit, control unit is analyzed back control execution unit execute protection action to fault.
Theoretically, all, relevant with business with signal Performance Detection point in the system can be as fault detecting point.In general; fault detecting point has the branch of work and protection, promptly is positioned at the fault detecting point on the operating path and is positioned at the fault detecting point of protecting on the path, like this; help control unit and judge it is operating path or protection path fails, the protection of correct control execution unit action then.
Fig. 1 is a 1+1 protection application scenarios schematic diagram, and in Fig. 1, fault detecting point 1 is positioned on the operating path, can detect the fault that takes place on the operating path, and fault detecting point 2 is positioned on the protection path, can detect the fault that takes place on the protection path.Fault detecting point all is positioned at protected field.
For the fault detecting point among Fig. 13; this fault detecting point has more powerful fault-detecting ability; can be checked through 2 of fault detecting point 1 and fault detecting point can not detected fault; but; fault detecting point 3 is positioned at outside the protected field; can not to judge detected fault intuitively be to take place on the operating path, still protects to take place on the path.Like this, also be unfavorable for fault location.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of 1+1 protection method and failure detector, can make full use of the fault detecting point outside the protected field, makes system obtain better protection.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of 1+1 protection method comprises: the outer fault detecting point of protected field detects fault warning, and is carried on operating path/protection path according to current business, determines it is job failure alarm/protection fault warning; Determine that according to malfunction the fault warning that produces is that fault generation/fault disappears, and when fault produces, carries out work/protection troubleshooting; When fault disappeared, work/protection alarm that order is provided with the outer fault detecting point of protected field disappeared, and protection/work alarm disappears.
When being arranged on fault detecting point in the protected field on the described operating path and detecting fault warning, this method also comprises:
If current business is carried on the operating path, then carry out 1+1 protection and switch processing, operating path is switched to the protection path;
If current business is carried on the protection path; when fault warning is to cause owing to the generation alarm; carry out 1+1 protection and switch processing; operating path is switched to the protection path; when fault warning is to cause owing to the disappearance of alarming; carry out the outer fault detecting point operation detection fault disappearance of described protected field and handle, the fault detect point failure disappearance of carrying out again on interior this operating path of described protected field is handled.
When being arranged on fault detecting point in the protected field on the described protection path and detecting fault warning, this method also comprises:
If current business is carried on the protection path, then carry out 1+1 protection and switch processing, will protect the path to switch to operating path;
If current business is carried on the operating path; when fault warning is to cause owing to the generation alarm; carry out 1+1 protection and switch processing; to protect the path to switch to operating path; when fault warning is to cause owing to the disappearance of alarming; carry out the outer fault detect point protection detection failure disappearance of described protected field and handle, the fault detect point failure disappearance of carrying out again on interior this protection path of described protected field is handled.
Described when fault produces, carry out work/protection troubleshooting; When fault disappeared, work/protection alarm that order is provided with the outer fault detecting point of protected field disappeared, and protection/work alarm disappears and comprises:
When fault produces,, operating path is switched to the protection path if the fault that produces on the operating path is carried out 1+1 protection and switched processing; If the fault that produces on the protection path is carried out 1+1 protection and switched processing, will protect the path to switch to operating path;
When fault disappears, if current business is to be carried on the protection path, carries out the disappearance of operating path fault and handle, protect the path to disappear again and handle; If current business is to be carried on the operating path, carry out the disappearance of operating path fault and handle, protect the path to disappear again and handle.
Described when fault produces, this method also comprises: start alarm shield.
A kind of failure detector, at least comprise: fault detect/determination module, the fault type determination module, and fault processing module, wherein, fault detect/determination module is used to detect fault warning, be carried on operating path/protection path according to current business, determine it is job failure alarm/protection fault warning; The fault type determination module is used for determining the job failure alarm/protection fault warning of generation, is that fault generation/fault disappears; Fault processing module is used for when fault produces, and carries out work/protection troubleshooting; When fault disappeared, work/protection alarm that order is provided with the outer fault detecting point of protected field disappeared, and protection/work alarm disappears.
Described failure detector is arranged in the outer fault detecting point of protected field,
Described fault detect/determination module specifically is used for the outer fault detecting point of protected field and detects fault warning, is carried on operating path/protection path according to current business, determines it is job failure alarm/protection fault warning;
Described fault processing module specifically is used for: for producing the fault warning that fault causes, if the fault that produces on the operating path is carried out 1+1 protection and switched processing, operating path is switched to the protection path; If the fault that produces on the protection path is carried out 1+1 protection and switched processing, will protect the path to switch to operating path; For the fault warning that fault disappears and causes, if current business is to be carried on the protection path, at first carries out the disappearance of operating path fault and handle, protect the path to disappear again and handle; If current business is to be carried on the operating path, at first carry out the disappearance of operating path fault and handle, protect the path to disappear again and handle.
The described fault warning that causes for the generation fault, and be the fault that produces on the operating path; Described fault processing module also is used to start alarm shield, the fault warning that is checked through with the trouble shooting point that masks outside this protected field that might exist in a flash that switches.
Described failure detector is arranged in the interior fault detecting point of protected field,
Described fault detect/determination module, the fault detecting point that specifically is used in the protected field detects fault warning, is carried on operating path/protection path according to current business, determines it is job failure alarm/protection fault warning;
If the fault detecting point in this protected field is arranged on the operating path, described fault processing module specifically is used for: when current business is carried on the operating path, carries out 1+1 protection and switch processing, operating path is switched to the protection path; When current business is carried on the protection path, when fault warning is to cause owing to the generation alarm, carry out 1+1 protection and switch processing, operating path is switched to the protection path, when fault warning is to cause owing to the disappearance of alarming, at first carry out the outer fault detecting point operation detection fault disappearance of protected field and handle, the fault detect point failure disappearance of carrying out again on interior this operating path of protected field is handled;
If the fault detecting point in this protected field is arranged on the protection path, described fault processing module specifically is used for: when current business is carried on the protection path, carries out 1+1 protection and switch processing, will protect the path to switch to operating path; When current business is carried on the operating path; when fault warning is to cause owing to the generation alarm; carry out 1+1 protection and switch processing; to protect the path to switch to operating path; when fault warning is to cause owing to the disappearance of alarming; at first carry out the outer fault detect point protection detection failure disappearance of protected field and handle, the fault detect point failure disappearance of carrying out again on interior this protection path of protected field is handled.
The technical scheme that provides from the invention described above comprises that the outer fault detecting point of protected field detects fault warning, and is carried on operating path/protection path according to current business as can be seen, determines it is job failure alarm/protection fault warning; Determine that according to malfunction the fault warning that produces is that fault generation/fault disappears, and when fault produces, carries out work/protection troubleshooting; When fault disappeared, work/protection alarm that order is provided with the outer fault detecting point of protected field disappeared, and protection/work alarm disappears.By the inventive method, made full use of the fault detecting point outside the protected field, make system obtain better protection.
Description of drawings
Fig. 1 is a 1+1 protection application scenarios schematic diagram;
Fig. 2 is the schematic flow sheet of 1+1 protection method of the present invention;
Fig. 3 is the composition structural representation of the failure detector of realization 1+1 protection method of the present invention;
Fig. 4 realizes the schematic flow sheet of 1+1 protected method for the outer fault detecting point of protected field of the present invention;
When there was the outer fault detecting point of protected field in Fig. 5 for the present invention, the fault detecting point in the protected field realized the schematic flow sheet of 1+1 protected method.
Embodiment
Fig. 2 is the schematic flow sheet of 1+1 protection method of the present invention, as shown in Figure 2, may further comprise the steps:
Step 200: the outer fault detecting point of protected field detects fault warning, and is carried on operating path/protection path according to current business, determines it is job failure alarm/protection fault warning.
In this step, determine that detected fault warning is the job failure alarm, still protect fault warning, can determine according to the state of performance element, when the state of performance element shows that current business is carried on the operating path, then detected fault warning is the job failure alarm; Be carried on the protection path when the state of performance element shows current business, then detected fault warning is the protection fault warning.
Step 201: determine that according to malfunction the fault warning that produces is that fault generation/fault disappears.
In this step,, show that then current fault warning is that generation owing to fault occurs if the malfunction of fault warning is shown as the generation fault; If the malfunction of fault warning is shown as the disappearance fault, show that then current fault warning is that disappearance owing to fault occurs.
Step 202: when fault produces, carry out work/protection troubleshooting; When fault disappeared, work/protection alarm that order is provided with the outer fault detecting point of protected field disappeared, and protection/work alarm disappears.
In this step, if produced fault, then according to existing troubleshooting, fault on fault on the operating path or the protection path is carried out respective handling to get final product: if the fault that produces on the operating path, so, carry out 1+1 protection and switch processing, operating path is switched to the protection path; Further, can also comprise: start alarm shield, the fault warning that is checked through with the trouble shooting point that masks outside this protected field that might exist in a flash that switches.If the fault that produces on the protection path so, is carried out 1+1 protection and switched processing, will protect the path to switch to operating path.
In this step, if the fault of Chan Shenging has disappeared before, the concrete processing comprises:
If current business is to be carried on the protection path, at first carries out the disappearance of operating path fault and handle, and then protect the path to disappear and handle.At this moment, operating path and protection path all do not have record trouble, return to the initial condition that protection is switched;
If current business is to be carried on the operating path; at first carrying out the disappearance of operating path fault handles; and then protect the path to disappear and handle (if not; protecting path failure to disappear earlier handles; then can cause switching services to arrive the protection path; and this moment, to protect the path was out of order, the alarm shield time to after can be switched to operating path again).At this moment, operating path and protection path all do not have record trouble, return to the initial condition that protection is switched.
The inventive method also comprises: fault detecting point outside having protected field, when the fault detecting point in the protected field detects fault warning, if this fault detecting point is arranged on the operating path, current business is carried on the operating path, then carry out 1+1 protection and switch processing, operating path is switched to the protection path; And current business is carried on when protecting on the path, when fault warning is to cause owing to the generation alarm, carry out 1+1 protection and switch processing, operating path is switched to the protection path, but, if fault warning is the disappearance owing to alarm cause the time, at first carry out the outer fault detecting point operation detection fault of protected field and disappear and handle, and then carry out in the protected field fault detect point failure on this operating path and disappear and handle;
If this fault detecting point is arranged on the protection path, current business is carried on the protection path, then carries out 1+1 protection and switches processing, will protect the path to switch to operating path; And current business is when being carried on the operating path; when fault warning is to cause owing to the generation alarm; carry out 1+1 protection and switch processing; to protect the path to switch to operating path; but; if fault warning is the disappearance owing to alarm cause the time, at first carry out the outer fault detect point protection detection failure of protected field and disappear and handle, and then carry out the disappearance of the fault detect point failure on this protection path processing in the protected field.
Fig. 3 is the composition structural representation of the failure detector of realization 1+1 protection method of the present invention, as shown in Figure 3, comprises at least: fault detect/determination module, and fault type determination module, and fault processing module, wherein,
Fault detect/determination module is used to detect fault warning, is carried on operating path/protection path according to current business, determines it is job failure alarm/protection fault warning.
The fault type determination module is used for determining the job failure alarm/protection fault warning of generation, is that fault generation/fault disappears.
Fault processing module is used for when fault produces, and carries out work/protection troubleshooting; When fault disappeared, work/protection alarm that order is provided with the outer fault detecting point of protected field disappeared, and protection/work alarm disappears.
Described failure detector is arranged in the outer fault detecting point of protected field,
Fault detect/determination module specifically is used for the outer fault detecting point of protected field and detects fault warning, is carried on operating path/protection path according to current business, determines it is job failure alarm/protection fault warning.
Fault processing module specifically is used for: for producing the fault warning that fault causes, if the fault that produces on the operating path is carried out 1+1 protection and switched processing, operating path is switched to the protection path; If the fault that produces on the protection path is carried out 1+1 protection and switched processing, will protect the path to switch to operating path; For the fault warning that fault disappears and causes, if current business is to be carried on the protection path, at first carries out the disappearance of operating path fault and handle, protect the path to disappear again and handle; If current business is to be carried on the operating path, at first carry out the disappearance of operating path fault and handle, protect the path to disappear again and handle.
For producing the fault warning that fault causes; and be the fault that produces on the operating path; fault processing module also is used to start alarm shield, the fault warning that is checked through with the trouble shooting point that masks outside this protected field that might exist in a flash that switches.
Described failure detector is arranged in the interior fault detecting point of protected field,
Fault detect/determination module, the fault detecting point that specifically is used in the protected field detects fault warning, is carried on operating path/protection path according to current business, determines it is job failure alarm/protection fault warning.
If the fault detecting point in this protected field is arranged on the operating path, described fault processing module specifically is used for: when current business is carried on the operating path, carries out 1+1 protection and switch processing, operating path is switched to the protection path; When current business is carried on the protection path, when fault warning is to cause owing to the generation alarm, carry out 1+1 protection and switch processing, operating path is switched to the protection path, when fault warning is to cause owing to the disappearance of alarming, at first carry out the outer fault detecting point operation detection fault disappearance of protected field and handle, the fault detect point failure disappearance of carrying out again on interior this operating path of protected field is handled;
If the fault detecting point in this protected field is arranged on the protection path, described fault processing module specifically is used for: when current business is carried on the protection path, carries out 1+1 protection and switch processing, will protect the path to switch to operating path; When current business is carried on the operating path; when fault warning is to cause owing to the generation alarm; carry out 1+1 protection and switch processing; to protect the path to switch to operating path; when fault warning is to cause owing to the disappearance of alarming; at first carry out the outer fault detect point protection detection failure disappearance of protected field and handle, the fault detect point failure disappearance of carrying out again on interior this protection path of protected field is handled.
Below in conjunction with embodiment the inventive method is described in detail.
Fig. 4 is the schematic flow sheet of the outer fault detecting point realization 1+1 protected method of protected field of the present invention, and in conjunction with Fig. 1, the outer fault detecting point of the protected field in the present embodiment is the fault detecting point 3 among Fig. 1, as shown in Figure 4, may further comprise the steps:
Step 400～step 401: trouble shooting point 3 is checked through fault warning, judges current business and is carried on the operating path, determines that there is fault in operating path, execution in step 402a; Be carried on the protection path if judge current business, determine that there is fault in the protection path, execution in step 402b.
Step 407: carry out 1+1 protection and switch processing, operating path is switched on the protection path, perhaps will protect the path to switch on the operating path.
This method also comprises, when execution in step 407, starts alarm shield.The shielding time of alarm arrives, and carries out the corresponding failure disappearance and handles.
When there is the outer fault detecting point of protected field in Fig. 5 for the present invention; fault detecting point in the protected field realizes the schematic flow sheet of 1+1 protected method; in conjunction with Fig. 1; fault detecting point in the protected field in the present embodiment is fault detecting point 2 or the fault detecting point 1 among Fig. 1; as shown in Figure 4, may further comprise the steps:
Step 500～step 501: trouble shooting is put 1/ fault detecting point 2 and is checked through fault warning, judges current business and is carried on work/protection path, determines that there is fault in work/protection path, execution in step 503b; Be carried on protection/operating path if judge current business, determine that there is fault in protection/operating path, execution in step 502.
Step 502: judge current fault warning and cause, enter step 503b owing to producing fault; Judge current fault warning and cause, enter step 503a owing to fault disappears.
Step 503a: the work on the fault detecting point 3/protection alarm disappears and handles.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a 1+1 protection method is characterized in that, comprising:
The outer fault detecting point of protected field detects fault warning, and is carried on operating path/protection path according to current business, determines it is job failure alarm/protection fault warning;
Determine that according to malfunction the fault warning that produces is that fault generation/fault disappears, and when fault produces, carries out work/protection troubleshooting; When fault disappeared, work/protection alarm that order is provided with the outer fault detecting point of protected field disappeared, and protection/work alarm disappears.
2. 1+1 protection method according to claim 1 is characterized in that, when being arranged on fault detecting point in the protected field on the described operating path and detecting fault warning, this method also comprises:
If current business is carried on the operating path, then carry out 1+1 protection and switch processing, operating path is switched to the protection path;
If current business is carried on the protection path; when fault warning is to cause owing to the generation alarm; carry out 1+1 protection and switch processing; operating path is switched to the protection path; when fault warning is to cause owing to the disappearance of alarming; carry out the outer fault detecting point operation detection fault disappearance of described protected field and handle, the fault detect point failure disappearance of carrying out again on interior this operating path of described protected field is handled.
3. 1+1 protection method according to claim 1 is characterized in that, when being arranged on fault detecting point in the protected field on the described protection path and detecting fault warning, this method also comprises:
If current business is carried on the protection path, then carry out 1+1 protection and switch processing, will protect the path to switch to operating path;
If current business is carried on the operating path; when fault warning is to cause owing to the generation alarm; carry out 1+1 protection and switch processing; to protect the path to switch to operating path; when fault warning is to cause owing to the disappearance of alarming; carry out the outer fault detect point protection detection failure disappearance of described protected field and handle, the fault detect point failure disappearance of carrying out again on interior this protection path of described protected field is handled.
4. according to claim 1,2 or 3 described 1+1 protection methods, it is characterized in that, described when fault produces, carry out work/protection troubleshooting; When fault disappeared, work/protection alarm that order is provided with the outer fault detecting point of protected field disappeared, and protection/work alarm disappears and comprises:
When fault produces,, operating path is switched to the protection path if the fault that produces on the operating path is carried out 1+1 protection and switched processing; If the fault that produces on the protection path is carried out 1+1 protection and switched processing, will protect the path to switch to operating path;
When fault disappears, if current business is to be carried on the protection path, carries out the disappearance of operating path fault and handle, protect the path to disappear again and handle; If current business is to be carried on the operating path, carry out the disappearance of operating path fault and handle, protect the path to disappear again and handle.
5. 1+1 protection method according to claim 4 is characterized in that, described when fault produces, this method also comprises: start alarm shield.
6. a failure detector is characterized in that, comprises at least: fault detect/determination module, and fault type determination module, and fault processing module, wherein,
Fault detect/determination module is used to detect fault warning, is carried on operating path/protection path according to current business, determines it is job failure alarm/protection fault warning;
The fault type determination module is used for determining the job failure alarm/protection fault warning of generation, is that fault generation/fault disappears;
Fault processing module is used for when fault produces, and carries out work/protection troubleshooting; When fault disappeared, work/protection alarm that order is provided with the outer fault detecting point of protected field disappeared, and protection/work alarm disappears.
7. failure detector according to claim 6 is characterized in that, described failure detector is arranged in the outer fault detecting point of protected field,
Described fault detect/determination module specifically is used for the outer fault detecting point of protected field and detects fault warning, is carried on operating path/protection path according to current business, determines it is job failure alarm/protection fault warning;
Described fault processing module specifically is used for: for producing the fault warning that fault causes, if the fault that produces on the operating path is carried out 1+1 protection and switched processing, operating path is switched to the protection path; If the fault that produces on the protection path is carried out 1+1 protection and switched processing, will protect the path to switch to operating path; For the fault warning that fault disappears and causes, if current business is to be carried on the protection path, at first carries out the disappearance of operating path fault and handle, protect the path to disappear again and handle; If current business is to be carried on the operating path, at first carry out the disappearance of operating path fault and handle, protect the path to disappear again and handle.
8. failure detector according to claim 6 is characterized in that, the described fault warning that causes for the generation fault, and be the fault that produces on the operating path;
Described fault processing module also is used to start alarm shield, the fault warning that is checked through with the trouble shooting point that masks outside this protected field that might exist in a flash that switches.
9. failure detector according to claim 6 is characterized in that, described failure detector is arranged in the interior fault detecting point of protected field,
Described fault detect/determination module, the fault detecting point that specifically is used in the protected field detects fault warning, is carried on operating path/protection path according to current business, determines it is job failure alarm/protection fault warning;
If the fault detecting point in this protected field is arranged on the operating path, described fault processing module specifically is used for: when current business is carried on the operating path, carries out 1+1 protection and switch processing, operating path is switched to the protection path; When current business is carried on the protection path, when fault warning is to cause owing to the generation alarm, carry out 1+1 protection and switch processing, operating path is switched to the protection path, when fault warning is to cause owing to the disappearance of alarming, at first carry out the outer fault detecting point operation detection fault disappearance of protected field and handle, the fault detect point failure disappearance of carrying out again on interior this operating path of protected field is handled;
If the fault detecting point in this protected field is arranged on the protection path, described fault processing module specifically is used for: when current business is carried on the protection path, carries out 1+1 protection and switch processing, will protect the path to switch to operating path; When current business is carried on the operating path; when fault warning is to cause owing to the generation alarm; carry out 1+1 protection and switch processing; to protect the path to switch to operating path; when fault warning is to cause owing to the disappearance of alarming; at first carry out the outer fault detect point protection detection failure disappearance of protected field and handle, the fault detect point failure disappearance of carrying out again on interior this protection path of protected field is handled.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010508887.7A CN101977077B (en) | 2010-10-12 | 2010-10-12 | 1+1 protection method and failure detection device |
| PCT/CN2011/074297 WO2012048569A1 (en) | 2010-10-12 | 2011-05-19 | 1+1 protection method and failure detection device |
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| CN201010508887.7A CN101977077B (en) | 2010-10-12 | 2010-10-12 | 1+1 protection method and failure detection device |
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| WO2012048569A1 (en) * | 2010-10-12 | 2012-04-19 | 中兴通讯股份有限公司 | 1+1 protection method and failure detection device |
| CN104702477A (en) * | 2013-12-06 | 2015-06-10 | 中兴通讯股份有限公司 | Method and device for realizing tunnel protection, and network equipment |
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| CN101977077B (en) * | 2010-10-12 | 2015-01-28 | 中兴通讯股份有限公司 | 1+1 protection method and failure detection device |
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- 2011-05-19 WO PCT/CN2011/074297 patent/WO2012048569A1/en active Application Filing
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| CN1525671A (en) * | 2003-02-27 | 2004-09-01 | �ձ�������ʽ���� | Alarm transfer method and wide area ethernet network |
| CN101150462A (en) * | 2007-10-18 | 2008-03-26 | 中兴通讯股份有限公司 | Protective switching method |
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| WO2012048569A1 (en) * | 2010-10-12 | 2012-04-19 | 中兴通讯股份有限公司 | 1+1 protection method and failure detection device |
| CN104702477A (en) * | 2013-12-06 | 2015-06-10 | 中兴通讯股份有限公司 | Method and device for realizing tunnel protection, and network equipment |
| CN104702477B (en) * | 2013-12-06 | 2019-04-05 | 中兴通讯股份有限公司 | A kind of method and device that realizing protecting tunnel, the network equipment |
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| CN101977077B (en) | 2015-01-28 |
| WO2012048569A1 (en) | 2012-04-19 |
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