CN102130718A - Network element equipment and method for protection switching of backbone optical path - Google Patents
Network element equipment and method for protection switching of backbone optical path Download PDFInfo
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- CN102130718A CN102130718A CN2010100028456A CN201010002845A CN102130718A CN 102130718 A CN102130718 A CN 102130718A CN 2010100028456 A CN2010100028456 A CN 2010100028456A CN 201010002845 A CN201010002845 A CN 201010002845A CN 102130718 A CN102130718 A CN 102130718A
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Abstract
The invention provides network element equipment and a method for protection switching of a backbone optical path. The method comprises the following steps of: creating a protection group for the network element equipment, wherein the protection group comprises a passive optical network (PON) protection port and a plurality of PON working ports; and when the protection switching is performed, switching switched optical paths of the PON working ports in the protection group to the PON protection port and the optical path corresponding to the PON protection port. By adoption of the technical scheme of the invention, the redundant protection of 1:N can be provided for the optical paths, so that operating cost is saved greatly.
Description
Technical field
The present invention relates to the protection switching technique of EPON (PON) system, relate in particular to network element device and method that a kind of trunk light path protection is switched.
Background technology
Passive optical network PON (Passive Optical Network) technology is a kind of optical fiber access technology.It adopts the network topology structure of point-to-multipoint, the passive fiber transmission.The PON system is the extensively good and present broadband access technology that sizable application is also arranged of a kind of quilt.The PON system wants to substitute fully original access device, and more reliable business and higher economy need be provided.
Present PON system mainly contains four kinds of protection switchover modes at present and is used to guarantee its reliability:
Type A protection, trunk optical fibre protection as shown in Figure 1a, can be protected trunk optical fiber, is independently finished by OLT (optical line terminal, optical fiber cable termination equipment) hardware.
The type B protection, trunk optical fiber and OLT side redundancy protecting shown in Fig. 1 b, are protected trunk optical fiber and OLT interface
The Type C protection, OLT side and the whole redundancy protectings of ONU side, shown in Fig. 1 c,
Type D protection, the whole redundancy protectings of OLT side, shown in Fig. 1 c, ONU side part redundancy protecting.
These protected modes all are the 1:1 redundancy protectings above all, i.e. a job of protection PON mouth correspondence PON mouth, and the price comparison of EPON OLT equipment is expensive, and operation cost is higher.
Summary of the invention
The technical problem to be solved in the present invention provides network element device and the method that a kind of trunk light path protection is switched, and can be the redundancy protecting that light path provides 1:N, has greatly saved operation cost.
In order to address the above problem, the invention provides the method that a kind of trunk light path protection is switched, comprising: for network element device is created the protection group, described protection group comprises a protection EPON (PON) mouth and a plurality of work PON mouth; When protecting when switching, with the work PON mouth optical path switching switched in the described protection group to the described protection PON mouth light path corresponding with it.
Further, the master control borad of described network element device is that network element device is created the protection group, comprise index relative correspondence table and the PON mouth state table of setting up the protection group, this index relative correspondence table comprises protection group sequence number, the protection group name claims, protects the PON stomochord to draw and the PON stomochord of working draws;
After described master control borad is created the protection group, send establishment protection group message to each work PON mouth place PON OLT ply-yarn drill, wherein carry and protect group index to concern the state information of the work PON mouth that correspondence table and this ply-yarn drill comprise, also the PON OLT ply-yarn drill to protection PON mouth place sends establishment protection group message, wherein carries the protection group index and concerns that correspondence table and protection PON mouth need data in synchronization;
After described work PON mouth place PON OLT ply-yarn drill was received and created protection group message, notice work PON mouth was in the protection group, and opens the optical module switch of work PON mouth;
Described protection PON mouth place PON OLT ply-yarn drill is closed the optical module switch of protection PON mouth after receiving and creating protection group message, and will protect the PON mouth to need data in synchronization to be sent to protection PON mouth.
Further, when carrying out Forced Switch, the master control borad of described network element device carries the work PON stomochord that need switch and draws to the instruction of the work PON mouth place PON OLT ply-yarn drill transmission Forced Switch of protecting PON mouth place PON OLT ply-yarn drill and being switched;
PON OLT ply-yarn drill draws according to described work PON stomochord judges that whether protection PON mouth is at this ply-yarn drill, it is the current state of then checking protection PON mouth, if protection PON mouth is the optical module that standby attitude is then opened protection PON mouth, and light path switched to and by the corresponding light path of work PON mouth light path of being switched, the data of the work PON mouth that operation is switched, and will protect the current state of PON mouth to be changed to operating conditions, if protection PON mouth is the optical module that operating conditions is then closed protection PON mouth, and will protect the current state of PON mouth to be changed to standby attitude;
Whether PON OLT ply-yarn drill also draws work PON mouth that judgement switched at this ply-yarn drill according to described work PON stomochord, it is the current state of then checking this work PON mouth, if work PON mouth is the optical module that operating conditions is then closed the work PON mouth of being switched, and the current state that will be switched work PON mouth is changed to standby attitude, if work PON mouth is the optical module that standby attitude is then opened the work PON mouth of being switched.
Further, after work PON mouth that the PON of described network element device OLT ply-yarn drill detects this ply-yarn drill breaks down, notice master control borad work PON mouth breaks down, carrying described work PON stomochord draws, master control borad draws according to described work PON stomochord judges whether this work PON mouth is in the protection group, be to judge further then whether the protection PON mouth of this protection group is standby attitude, be then to send the protection switching messages, carry the work PON stomochord of being switched and draw to the work PON mouth place PON OLT ply-yarn drill of protecting PON mouth place PON OLT ply-yarn drill and being switched;
PON OLT ply-yarn drill draws according to described work PON stomochord judges that whether protection PON mouth is at this ply-yarn drill, be then to indicate the optical module of opening protection PON mouth, and light path switched to and by the corresponding light path of work PON mouth light path of being switched, the data of the work PON mouth that operation is switched, and will protect the current state of PON mouth to be changed to operating conditions;
Whether PON OLT ply-yarn drill also draws work PON mouth that judgement switched at this ply-yarn drill according to described work PON stomochord, is the optical module of then closing the described work PON mouth of being switched, and the current state that will be switched work PON mouth is changed to standby attitude.
Further, described protection PON stomochord draws and the PON stomochord of working draws and adopts slot number and PON port numbers to identify jointly.
Further, described protection PON mouth needs data in synchronization to comprise, flag bit identifies whether this PON mouth is in the protection group, the Backup Data table of protection group sequence number, PON mouth current state and all working PON mouth.
The network element device that a kind of trunk light path protection is switched, described network element device comprises master control borad and one or more EPON optical fiber cable termination equipment (PON OLT) ply-yarn drill;
Described master control borad is used to network element device to create the protection group; And when protecting the protection PON mouth of indicating when switching in the described protection group to move the data of the work PON mouth of being switched; The described protection group of creating comprises a protection PON mouth and a plurality of work PON mouth;
Described PON OLT ply-yarn drill is used for switching according to the indication protection of described master control borad, with in the described protection group by the work PON mouth optical path switching switched to the described protection PON mouth light path corresponding with it.
Further, described master control borad comprises master control protection processing module;
Described master control protection processing module, be used for creating the protection group according to the instruction of the establishment protection group that receives, comprise the index relative correspondence table of creating the protection group, the index relative correspondence table of described protection group comprises protection group sequence number, the protection group name claims, protects the PON stomochord to draw and the PON stomochord of working draws;
Described master control protection processing module also is used for sending establishment protection group message to protection PON mouth place ply-yarn drill, the protection group information and the protection PON mouth that wherein carry establishment need data in synchronization to send establishment protection group message, the state information of wherein carrying the protection group information of establishment and the work PON mouth that this ply-yarn drill comprises to work PON mouth place ply-yarn drill;
Described PON OLT ply-yarn drill comprises ply-yarn drill protection processing module and optical switch control module;
Described ply-yarn drill protection processing module, be used to receive the establishment protection group message that master control borad issues, when the protection PON mouth in the protection group of creating is the PON mouth of this ply-yarn drill, with the need data in synchronization of wherein carrying synchronously to protecting the PON mouth, and notice optical switch control module is closed the optical module of protection PON mouth, when the work PON mouth in the protection group of creating comprises the PON mouth of this ply-yarn drill, notice optical switch control module is opened the optical module of work PON mouth, and should protection group sequence number, work PON mouth current state is sent to work PON mouth;
Described optical switch control module is used for closing the optical module of protecting the PON mouth according to described notice, and the optical module of opening work PON mouth.
Further, described master control borad also comprises the OAMAgent module, the instruction that is used for the Forced Switch that will receive is forwarded to master control protection processing module, the direction that the work PON stomochord that wherein carry the sequence number of the protection group that need switch and/or title, need switch draws and switches;
Described master control protection processing module also is used to receive after the instruction of Forced Switch to protection PON mouth place PON OLT ply-yarn drill and is switched work PON mouth place PON OLT ply-yarn drill and sends the instruction of Forced Switch, carries the work PON stomochord that need switch and draws;
After described ply-yarn drill protection processing module also is used to receive the instruction of Forced Switch, whether draw work PON mouth that judgement need switch at this ply-yarn drill according to wherein work PON stomochord, be then to notify the ply-yarn drill Service Processing Module to protect to switch, wherein indicating the work PON stomochord that need switch draws, the current state that ply-yarn drill protection processing module is also checked the work PON mouth that need switch, if operating conditions then notifies the optical switch control module to close the optical module of work PON mouth, if the optical module that standby attitude then notifies the optical switch control module to open work PON mouth wherein indicates the work PON stomochord of being switched and draws;
Ply-yarn drill protection processing module also is used for drawing according to work PON stomochord judges that it protects the PON mouth whether at this ply-yarn drill, be then to notify the ply-yarn drill Service Processing Module to protect to switch, wherein indicating the work PON stomochord of being switched draws, and notice optical switch control module is opened the optical module of protecting the PON mouth when protection PON mouth is standby attitude, and notice optical switch control module is closed the optical module of protection PON mouth when protection PON mouth is operating conditions;
Described ply-yarn drill Service Processing Module is used to receive protects the notice of switching, when by the work PON mouth switched during at this ply-yarn drill, switch the current state of this work PON mouth, when protecting the PON mouth at this ply-yarn drill, the current state of switch protecting PON mouth, and when protecting the PON mouth when operating conditions switches, to instruct protection PON mouth to move the data of the work PON mouth of being switched by standby attitude;
Described optical switch control module also is used to receive the optical module of opening/closing protection PON mouth after the notice of optical module of opening/closing protection PON mouth, and the optical module of receiving opening/closing work PON mouth after the notice of optical module of opening/closing work PON mouth.
Further, described master control borad also comprises the PON Service Processing Module;
The ply-yarn drill Service Processing Module also is used to detect the work PON mouth back notice master control borad work PON mouth that breaks down and breaks down, and wherein carries this work PON stomochord and draws;
Described PON Service Processing Module sends the fault warning of PON mouth to control protection processing module after also being used to receive the notice of work PON mouth fault, wherein carries the work PON stomochord that breaks down and draws;
Described master control protection processing module also is used for drawing according to work PON stomochord judges whether this work PON mouth is in the protection group, be to judge further then whether the protection PON mouth of this protection group is standby attitude, then switched work PON mouth place PON OLT ply-yarn drill transmission protection switching messages, wherein carry the work PON stomochord that breaks down and draw to protection PON mouth place PON OLT ply-yarn drill and quilt;
After described ply-yarn drill protection processing module also is used to receive the protection switching messages, whether draw judgement protection PON mouth at this ply-yarn drill according to described work PON stomochord, be then to notify the ply-yarn drill Service Processing Module to protect to switch, wherein indicate the work PON stomochord of being switched and regard it as and notify the optical switch control module to open the optical module of described protection PON mouth; Also being used for whether drawing work PON mouth that judgement switched at this ply-yarn drill according to described work PON stomochord, is then to notify the optical switch control module to close the optical module of the described work PON mouth of being switched;
Described ply-yarn drill Service Processing Module also is used to receive protects the notice of switching, the data of the work PON mouth that the operation of the described protection of instruction PON mouth is switched when protecting the PON mouth at this ply-yarn drill, and will protect the current state of PON mouth to be changed to operating conditions, when the current state of the work PON mouth that will be switched during at this ply-yarn drill by the work PON mouth switched is changed to standby attitude;
Described optical switch control module also is used for closing according to described notice the optical module of the described work PON mouth of being switched, and opens the optical module of described protection PON mouth.
Further, described protection PON stomochord draws and the PON stomochord of working draws and adopts slot number and PON port numbers to identify jointly.
The invention provides network element device and method that a kind of trunk light path protection is switched,, saved OLT PON mouth resource, saved operating cost of operator, increased the economic and practical of PON access resist technology owing to adopted the protected mode of 1:N.
Description of drawings
Fig. 1 a to Fig. 1 d is the networking diagram of 1:1 redundancy protecting in the prior art;
Fig. 2 is the networking diagram that 1:N protection of the present invention is switched;
Fig. 3 is a system configuration schematic diagram of the present invention;
Fig. 4 is that the inventive method protection is formed and built flow chart;
Fig. 5 is that the present invention realizes the flow chart that mandatory protection is switched;
When being working hole fault of the present invention, realizes Fig. 6 the flow chart that protection is switched.
Embodiment
The network element device that present embodiment provides a kind of trunk light path protection to switch, as shown in Figure 3, network element device comprises a master control borad and one or more ply-yarn drill;
Master control borad comprises OAMAgent module, master control protection processing module and PON Service Processing Module;
The OAMAgent module, the instruction that is used for establishment protection group that webmaster is sent is forwarded to the protection processing module; The instruction of this establishment protection group comprises protection group sequence number, protection group name that need to create and claims, protect the PON stomochord to draw, reach work PON stomochord to draw; The protection group of creating comprises a protection PON mouth and a plurality of work PON mouth, have and the consistent protection light path of work PON mouth quantity on the protection PON mouth, and every protection light path is corresponding one by one with working light path.
The instruction that the OAMAgent module also is used for deletion protection group that webmaster is sent is forwarded to the protection processing module; The instruction of this deletion protection group comprises the sequence number and/or the title of the protection group that needs deletion;
The instruction that the OAMAgent module also is used for Forced Switch that webmaster is sent is forwarded to the protection processing module, and the work PON stomochord that the instruction of this Forced Switch comprises the sequence number of the protection group that need switch and/or title, need switch draws and the direction of switching (working hole is switched still protection to the protection mouth and mouthful switched to working hole).
Master control protection processing module, be used for creating the protection group according to the instruction of the establishment protection group that receives, comprise index relative correspondence table and the PON mouth state table of setting up the protection group, the index relative correspondence table of protection group comprises protection group sequence number, the protection group name claims, protects the PON stomochord to draw and the PON stomochord of working draws; Wherein, protection PON stomochord draws and the PON stomochord of working draws and can adopt slot number and PON port numbers to identify jointly;
Master control protection processing module also is used for obtaining protection PON mouth from the PON Service Processing Module needs data in synchronization; And to protection PON mouth place ply-yarn drill transmission establishment protection group message; the protection group sequence number and the protection PON mouth that wherein carry establishment need data in synchronization; also be used for sending and create protection group message, wherein carry the protection group sequence number of establishment, the work PON stomochord of this ply-yarn drill protection draws and the PON mouth state of working to work PON mouth place ply-yarn drill.Protection PON mouth needs data in synchronization to comprise: the user is in data, the configuration data of ONU, the work PON mouth online ONU service data of the configuration of work PON mouth, and the ONU service data comprises the state etc. of LLID, ONU MAC and the ONU of ONU;
Master control protection processing module also is used to receive the PON mouth fault warning of PON Service Processing Module, and judge that this PON mouth is whether in the protection group, and whether can switch and (then can switch for standby attitude if protection PON mouth is current, then cannot switch for operating conditions if protection PON mouth is current), if can switch then and be switched work PON mouth place PON OLT ply-yarn drill transmission protection switching messages, wherein carry the work PON stomochord that breaks down and draw to protection PON mouth place PON OLT ply-yarn drill and quilt;
Master control protection processing module can also be used for providing interface to the PON Service Processing Module, whether is used for inquiring about the PON mouth in the protection group.
Master control protection processing module also be used to the instruction of the Forced Switch that receives when legal to protection PON mouth place PON OLT ply-yarn drill and switched work PON mouth place PON OLT ply-yarn drill and send the instruction of Forced Switch, wherein carry the work PON stomochord of being switched at least and draw.
The PON Service Processing Module is used to preserve the data of normal PON Business Processing;
After the PON Service Processing Module also is used to receive the notice of work PON mouth fault, send the fault warning of PON mouth, wherein carry the work PON stomochord that breaks down and draw to master control protection processing module.
Ply-yarn drill comprises ply-yarn drill Service Processing Module, ply-yarn drill protection processing module and optical switch control module;
Ply-yarn drill protection processing module; be used to receive the establishment protection group message that master control borad issues; when the protection PON mouth in the protection group of creating is the PON mouth of this ply-yarn drill; with the need data in synchronization of wherein carrying synchronously to protecting the PON mouth; and notice optical switch control module is closed the optical module of protection PON mouth; when the work PON mouth in the protection group of creating comprises the PON mouth of this ply-yarn drill; notice optical switch control module is opened the optical module of work PON mouth, and should protection group sequence number, work PON mouth current state is sent to work PON mouth.
After ply-yarn drill protection processing module also is used to receive the protection switching messages, whether draw judgement protection PON mouth at this ply-yarn drill according to work PON stomochord, be then to notify the ply-yarn drill Service Processing Module to protect to switch, wherein indicate the work PON stomochord of being switched and regard it as and notify the optical switch control module to open the optical module of protection PON mouth; Also being used for whether drawing work PON mouth that judgement switched at this ply-yarn drill according to work PON stomochord, is the optical module of the work PON mouth then notifying the optical switch control module to close to be switched;
After ply-yarn drill protection processing module also is used to receive the instruction of Forced Switch, whether draw work PON mouth that judgement need switch at this ply-yarn drill according to wherein work PON stomochord, be then to notify the ply-yarn drill Service Processing Module to protect to switch, wherein indicating the work PON stomochord that need switch draws, the current state that ply-yarn drill protection processing module is also checked the work PON mouth that need switch, if operating conditions then notifies the optical switch control module to close the optical module of work PON mouth, if the optical module that standby attitude then notifies the optical switch control module to open work PON mouth wherein indicates the work PON stomochord of being switched and draws; Ply-yarn drill protection processing module also is used for drawing according to work PON stomochord judges that it protects the PON mouth whether at this ply-yarn drill; be then to notify the ply-yarn drill Service Processing Module to protect to switch; wherein indicating the work PON stomochord of being switched draws; and notice optical switch control module is opened the optical module of protecting the PON mouth when protection PON mouth is standby attitude, and notice optical switch control module is closed the optical module of protection PON mouth when protection PON mouth is operating conditions.
The ply-yarn drill Service Processing Module; be used to receive and protect the notice of switching; when by the work PON mouth switched during at this ply-yarn drill; switch the current state of this work PON mouth; when protecting the PON mouth at this ply-yarn drill; the current state of switch protecting PON mouth, and when protecting the PON mouth when operating conditions switches, to instruct protection PON mouth to move the data of the work PON mouth of being switched by standby attitude.
The ply-yarn drill Service Processing Module also is used to detect the work PON mouth back notice master control borad work PON mouth that breaks down and breaks down, and wherein carries this work PON stomochord and draws;
The optical switch control module is used for the notice sent according to ply-yarn drill protection processing module, closes or open the optical module of protection PON mouth, and the optical module that opens or closes work PON mouth.
Fig. 4 has introduced the inventive method protection and has formed handling process when building.As shown in the drawing, may further comprise the steps:
Step 401: create the protection group for network element device, system carries out validity decision, if legal just the beginning created the protection group, sets up the index relative correspondence table and the PON mouth state table of protection group.
The protection group index of setting up concerns that correspondence table generally comprises protection group sequence number, the protection group name claims, protects the PON stomochord to draw and the PON stomochord of working draws; Wherein, the data type structure of PON mouth sign is slot number, PON port numbers (promptly protect the PON stomochord to draw and the PON stomochord of working draw can adopt slot number and PON port numbers to identify jointly); As shown in table 1; protection group sequence number be in 1 the protection group protection PON mouth be designated ponIndex1; its corresponding slot number is 2, the PON port numbers is 1; the PON mouth of working in this protection group is ponIndex2 and ponIndex3; the slot number of ponIndex2 correspondence is 2; the PON port numbers is 2, and the slot number of ponIndex3 correspondence is 1, and the PON port numbers is 1.
The protection group of creating comprises a protection PON mouth and a plurality of work PON mouth, have and the consistent protection light path of work PON mouth quantity on the protection PON mouth, and every protection light path is corresponding one by one with working light path.
The PON mouth state table of setting up has write down the operating state of each PON mouth in the protection group of creating, and comprises operating conditions and standby attitude, and when just creating, the current state of protection PON mouth is standby attitude, and the current state of work PON mouth is operating conditions, and is as shown in table 2.
Table 1: the protection group index concerns correspondence table
| Protection group sequence number | The protection group name claims | Protection PON mouth | Work PON mouth |
| 1 | ProtA | ponIndex1 | ponIndex2、ponIndex3 |
| 2 | ProtB | ponIndex4 | ponIndex5、ponIndex6 |
Table 2: protection group PON mouth state table
| Protection group sequence number | Port | State |
| 1 | ponIndex1 | Standby attitude | operating conditions |
| 1 | ponIndex2 | Operating conditions | standby attitude |
| 1 | ponIndex3 | Operating conditions | standby attitude |
Step 402: master control borad sends establishment protection group message to the PON OLT ply-yarn drill at each work PON mouth place and the PON OLT ply-yarn drill at protection PON mouth place;
Particularly; master control borad sends establishment protection group message to the PON OLT ply-yarn drill at protection PON mouth place; wherein carry the protection group index and concern that correspondence table and protection PON mouth need data in synchronization, need data in synchronization to comprise: the user is in data, the configuration data of ONU, the work PON mouth online ONU service data of the configuration of work PON mouth.The ONU service data comprises the LLID of ONU, the state of ONU MAC, ONU etc.
Master control borad sends to work PON mouth place PON OLT ply-yarn drill and creates protection group message, wherein carries the state information that the protection group index concerns the work PON mouth that correspondence table and this ply-yarn drill comprise.
Step 403:PON OLT ply-yarn drill is received to create after the protection group message and is created protection group data in this locality;
Particularly; when this ply-yarn drill comprises work PON mouth; open the optical module switch of work PON mouth; make work PON mouth optical module luminous; and data are organized in protection be sent to work PON mouth, comprising: flag bit identifies whether this PON mouth is in the protection group, PON mouth current state (being operating conditions during establishment).
When this ply-yarn drill comprises protection PON mouth; close the optical module switch of protection PON mouth; make optical module not luminous; and will protect the PON mouth to need data in synchronization to be sent to protection PON mouth, need data in synchronization to comprise: flag bit identifies whether this PON mouth is in the protection group, the Backup Data table (setting up when receiving the notice of creating the protection group) of protection group sequence number, PON mouth current state (being standby attitude during establishment) and all working PON mouth.Work PON mouth Backup Data table mainly comprises following information: protection group sequence number, PON stomochord draw, PON mouth attribute (configuration data of work PON mouth), ONU index, ONU configuration data, work PON mouth online ONU service data.The ONU configuration data comprises: all information at the ONU of work PON mouth configuration such as bandwidth, VLAN, encryption.The ONU service data mainly is the log-on message of ONU, and ONU needn't go to register direct operation in the time of can realizing switching, and comprises the LLID of ONU, the state of ONU MAC, ONU etc.The Backup Data table can be realized by chained list.
Protection PON mouth can move the normal operation that a default data keeps system.The optical module of protection PON mouth is closed, and is illogical professional, and ONU can not register at protection PON mouth, the situation of ONU data collision therefore can not occur.
Be the Forced Switch flow process as shown in Figure 5, may further comprise the steps:
Step 501: when carrying out Forced Switch by hand, master control borad carries the work PON stomochord that need switch at least and draws to the instruction of the work PON mouth place PON OLT ply-yarn drill transmission Forced Switch of protecting PON mouth place PON OLT ply-yarn drill and being switched;
The instruction that step 502:PON OLT ply-yarn drill is received Forced Switch, whether draw judgement protection PON mouth at this ply-yarn drill according to work PON stomochord, it is the current state of then checking protection PON mouth, if protection PON mouth is the optical module that standby attitude is then opened protection PON mouth, and light path switched to and by the corresponding light path of work PON mouth light path of being switched, draw according to work PON stomochord and to find the data that to move, the data of the work PON mouth that operation is switched, and will protect the current state of PON mouth to be changed to operating conditions; Protection PON mouth begins operate as normal; If protection PON mouth is the optical module that operating conditions is then closed protection PON mouth, and will protect the current state of PON mouth to be changed to standby attitude;
Whether PON OLT ply-yarn drill also draws work PON mouth that judgement switched at this ply-yarn drill according to work PON stomochord, it is the current state of then checking this work PON mouth, if work PON mouth is the optical module that operating conditions is then closed the work PON mouth of being switched, and the current state that will be switched work PON mouth is changed to standby attitude, if work PON mouth is the optical module that standby attitude is then opened the work PON mouth of being switched.
Be owing to PON mouth light signal deterioration occurred or can not receive serious situation work PON mouth such as the light flow process that system begins to switch when breaking down as shown in Figure 6:
Step 601: when switching owing to fault protection, ply-yarn drill detects certain work PON mouth and breaks down, and notice master control borad work PON mouth breaks down, and wherein carries this work PON stomochord and draws;
Step 602: master control borad draws according to this work PON stomochord judges whether it is in certain protection group; be then to judge whether to switch (then can switch for standby attitude if protection PON mouth is current; then cannot switch for operating conditions if protection PON mouth is current); if can switch then and send the protection switching messages, carry the work PON stomochord that breaks down and draw to work PON mouth that breaks down and protection PON mouth place PON OLT ply-yarn drill.
Step 603:PON OLT ply-yarn drill is received the protection switching messages, whether draw judgement protection PON mouth at this ply-yarn drill according to work PON stomochord, be then to indicate the optical module of opening protection PON mouth, and light path switched to and by the corresponding light path of work PON mouth light path of being switched, draw according to work PON stomochord and to find the data that to move, the data of the work PON mouth that operation is switched, and will protect the current state of PON mouth to be changed to operating conditions; Protection PON mouth begins operate as normal.
Whether PON OLT ply-yarn drill also draws work PON mouth that judgement switched at this ply-yarn drill according to work PON stomochord, is the optical module of then closing the work PON mouth of being switched, and the current state that will be switched work PON mouth is changed to standby attitude.
After protection PON mouth switches to work PON mouth, be in operating conditions, other work PON mouth can not switch to protection PON mouth again; have only the former work PON mouth of working as to repair; after switching back former work PON mouth, protection PON mouth reverts to standby attitude, and other work PON mouth can be protected and switch.
Application example
Fig. 2 has introduced the networking diagram of the PON system when using the inventive method.The PON mouth 1 and PON mouth 2 that comprise OLT1 in the protection group for certain network element device setting, and the PON mouth 1 and PON mouth 2 of OLTN; Wherein, the PON mouth 2 of OLT1 and the PON1 of OLT N and PON mouth 2 are as work PON mouth, and the PON mouth 1 of OLT1 is as protection PON mouth.
This protection reverse method both can realize that inter-board protection also can realize protection in the plate, connected the trunk optical fiber of a plurality of light paths by 1 * N optical switch, as the protection light path.Work PON mouth connects ONU by the 2:N optical splitter, and a trunk optical fiber is connected to work PON mouth, and another root trunk optical fiber is linked into the N end of 1 * N optical switch, and 1 * N optical switch, 1 end is connected to protection PON mouth.As 1a, 2a, 3a among the figure is working light path; 1b, 2b, 3b are the protection light paths of protection PON mouth correspondence, and wherein, 1b is the protection light path of protection light path working light path 1a; 2b is the protection light path of protection light path working light path 2a, and 3b is the protection light path of protection light path working light path 3a.Working light path is a normal open business just, and the OLT optical module of protection light path is closed, and can not lead to business.Suppose that the 2a light path disconnects, cause protection to switch generation, the business of former 2a light path switches to the 2b light path.Optical switch is connected the 2b light path, and the optical module of the PON mouth 1 of OLT1 is opened, normal open business just on the 2b light path.Other protection light paths are still disconnection.
Claims (11)
1. the trunk light path protection method of switching comprises:
For network element device is created the protection group, described protection group comprises a protection EPON (PON) mouth and a plurality of work PON mouth;
When protecting when switching, with the work PON mouth optical path switching switched in the described protection group to the described protection PON mouth light path corresponding with it.
2. the method for claim 1 is characterized in that:
The master control borad of described network element device is that network element device is created the protection group, comprises index relative correspondence table and the PON mouth state table of setting up the protection group, and this index relative correspondence table comprises protection group sequence number, the protection group name claims, protects the PON stomochord to draw and the PON stomochord of working draws;
After described master control borad is created the protection group, send establishment protection group message to each work PON mouth place PON OLT ply-yarn drill, wherein carry and protect group index to concern the state information of the work PON mouth that correspondence table and this ply-yarn drill comprise, also the PON OLT ply-yarn drill to protection PON mouth place sends establishment protection group message, wherein carries the protection group index and concerns that correspondence table and protection PON mouth need data in synchronization;
After described work PON mouth place PON OLT ply-yarn drill was received and created protection group message, notice work PON mouth was in the protection group, and opens the optical module switch of work PON mouth;
Described protection PON mouth place PON OLT ply-yarn drill is closed the optical module switch of protection PON mouth after receiving and creating protection group message, and will protect the PON mouth to need data in synchronization to be sent to protection PON mouth.
3. method as claimed in claim 2 is characterized in that:
When carrying out Forced Switch, the master control borad of described network element device carries the work PON stomochord that need switch and draws to the instruction of the work PON mouth place PON OLT ply-yarn drill transmission Forced Switch of protecting PON mouth place PONOLT ply-yarn drill and being switched;
PON OLT ply-yarn drill draws according to described work PON stomochord judges that whether protection PON mouth is at this ply-yarn drill, it is the current state of then checking protection PON mouth, if protection PON mouth is the optical module that standby attitude is then opened protection PON mouth, and light path switched to and by the corresponding light path of work PON mouth light path of being switched, the data of the work PON mouth that operation is switched, and will protect the current state of PON mouth to be changed to operating conditions, if protection PON mouth is the optical module that operating conditions is then closed protection PON mouth, and will protect the current state of PON mouth to be changed to standby attitude;
Whether PON OLT ply-yarn drill also draws work PON mouth that judgement switched at this ply-yarn drill according to described work PON stomochord, it is the current state of then checking this work PON mouth, if work PON mouth is the optical module that operating conditions is then closed the work PON mouth of being switched, and the current state that will be switched work PON mouth is changed to standby attitude, if work PON mouth is the optical module that standby attitude is then opened the work PON mouth of being switched.
4. method as claimed in claim 2 is characterized in that:
After work PON mouth that the PON of described network element device OLT ply-yarn drill detects this ply-yarn drill breaks down, notice master control borad work PON mouth breaks down, carrying described work PON stomochord draws, master control borad draws according to described work PON stomochord judges whether this work PON mouth is in the protection group, be to judge further then whether the protection PON mouth of this protection group is standby attitude, be then to send the protection switching messages, carry the work PON stomochord of being switched and draw to the work PON mouth place PON OLT ply-yarn drill of protecting PON mouth place PONOLT ply-yarn drill and being switched;
PON OLT ply-yarn drill draws according to described work PON stomochord judges that whether protection PON mouth is at this ply-yarn drill, be then to indicate the optical module of opening protection PON mouth, and light path switched to and by the corresponding light path of work PON mouth light path of being switched, the data of the work PON mouth that operation is switched, and will protect the current state of PON mouth to be changed to operating conditions;
Whether PON OLT ply-yarn drill also draws work PON mouth that judgement switched at this ply-yarn drill according to described work PON stomochord, is the optical module of then closing the described work PON mouth of being switched, and the current state that will be switched work PON mouth is changed to standby attitude.
5. method as claimed in claim 2 is characterized in that:
Described protection PON stomochord draws and the PON stomochord of working draws the employing slot number and the PON port numbers identifies jointly.
6. method as claimed in claim 2 is characterized in that:
Described protection PON mouth needs data in synchronization to comprise, flag bit identifies whether this PON mouth is in the protection group, the Backup Data table of protection group sequence number, PON mouth current state and all working PON mouth.
7. the network element device switched of trunk light path protection, described network element device comprises master control borad and one or more EPON optical fiber cable termination equipment (PON OLT) ply-yarn drill; It is characterized in that:
Described master control borad is used to network element device to create the protection group; And when protecting the protection PON mouth of indicating when switching in the described protection group to move the data of the work PON mouth of being switched; The described protection group of creating comprises a protection PON mouth and a plurality of work PON mouth;
Described PON OLT ply-yarn drill is used for switching according to the indication protection of described master control borad, with in the described protection group by the work PON mouth optical path switching switched to the described protection PON mouth light path corresponding with it.
8. equipment as claimed in claim 7 is characterized in that:
Described master control borad comprises master control protection processing module;
Described master control protection processing module, be used for creating the protection group according to the instruction of the establishment protection group that receives, comprise the index relative correspondence table of creating the protection group, the index relative correspondence table of described protection group comprises protection group sequence number, the protection group name claims, protects the PON stomochord to draw and the PON stomochord of working draws;
Described master control protection processing module also is used for sending establishment protection group message to protection PON mouth place ply-yarn drill, the protection group information and the protection PON mouth that wherein carry establishment need data in synchronization to send establishment protection group message, the state information of wherein carrying the protection group information of establishment and the work PON mouth that this ply-yarn drill comprises to work PON mouth place ply-yarn drill;
Described PON OLT ply-yarn drill comprises ply-yarn drill protection processing module and optical switch control module;
Described ply-yarn drill protection processing module, be used to receive the establishment protection group message that master control borad issues, when the protection PON mouth in the protection group of creating is the PON mouth of this ply-yarn drill, with the need data in synchronization of wherein carrying synchronously to protecting the PON mouth, and notice optical switch control module is closed the optical module of protection PON mouth, when the work PON mouth in the protection group of creating comprises the PON mouth of this ply-yarn drill, notice optical switch control module is opened the optical module of work PON mouth, and should protection group sequence number, work PON mouth current state is sent to work PON mouth;
Described optical switch control module is used for closing the optical module of protecting the PON mouth according to described notice, and the optical module of opening work PON mouth.
9. equipment as claimed in claim 8 is characterized in that:
Described master control borad also comprises the OAMAgent module, and the instruction that is used for the Forced Switch that will receive is forwarded to master control protection processing module, the direction that the work PON stomochord that wherein carry the sequence number of the protection group that need switch and/or title, need switch draws and switches;
Described master control protection processing module also is used to receive after the instruction of Forced Switch to protection PON mouth place PON OLT ply-yarn drill and is switched work PON mouth place PON OLT ply-yarn drill and sends the instruction of Forced Switch, carries the work PON stomochord that need switch and draws;
After described ply-yarn drill protection processing module also is used to receive the instruction of Forced Switch, whether draw work PON mouth that judgement need switch at this ply-yarn drill according to wherein work PON stomochord, be then to notify the ply-yarn drill Service Processing Module to protect to switch, wherein indicating the work PON stomochord that need switch draws, the current state that ply-yarn drill protection processing module is also checked the work PON mouth that need switch, if operating conditions then notifies the optical switch control module to close the optical module of work PON mouth, if the optical module that standby attitude then notifies the optical switch control module to open work PON mouth wherein indicates the work PON stomochord of being switched and draws;
Ply-yarn drill protection processing module also is used for drawing according to work PON stomochord judges that it protects the PON mouth whether at this ply-yarn drill, be then to notify the ply-yarn drill Service Processing Module to protect to switch, wherein indicating the work PON stomochord of being switched draws, and notice optical switch control module is opened the optical module of protecting the PON mouth when protection PON mouth is standby attitude, and notice optical switch control module is closed the optical module of protection PON mouth when protection PON mouth is operating conditions;
Described ply-yarn drill Service Processing Module is used to receive protects the notice of switching, when by the work PON mouth switched during at this ply-yarn drill, switch the current state of this work PON mouth, when protecting the PON mouth at this ply-yarn drill, the current state of switch protecting PON mouth, and when protecting the PON mouth when operating conditions switches, to instruct protection PON mouth to move the data of the work PON mouth of being switched by standby attitude;
Described optical switch control module also is used to receive the optical module of opening/closing protection PON mouth after the notice of optical module of opening/closing protection PON mouth, and the optical module of receiving opening/closing work PON mouth after the notice of optical module of opening/closing work PON mouth.
10. equipment as claimed in claim 8 is characterized in that:
Described master control borad also comprises the PON Service Processing Module;
The ply-yarn drill Service Processing Module also is used to detect the work PON mouth back notice master control borad work PON mouth that breaks down and breaks down, and wherein carries this work PON stomochord and draws;
Described PON Service Processing Module sends the fault warning of PON mouth to control protection processing module after also being used to receive the notice of work PON mouth fault, wherein carries the work PON stomochord that breaks down and draws;
Described master control protection processing module also is used for drawing according to work PON stomochord judges whether this work PON mouth is in the protection group, be to judge further then whether the protection PON mouth of this protection group is standby attitude, then switched work PON mouth place PON OLT ply-yarn drill transmission protection switching messages, wherein carry the work PON stomochord that breaks down and draw to protection PON mouth place PON OLT ply-yarn drill and quilt;
After described ply-yarn drill protection processing module also is used to receive the protection switching messages, whether draw judgement protection PON mouth at this ply-yarn drill according to described work PON stomochord, be then to notify the ply-yarn drill Service Processing Module to protect to switch, wherein indicate the work PON stomochord of being switched and regard it as and notify the optical switch control module to open the optical module of described protection PON mouth; Also being used for whether drawing work PON mouth that judgement switched at this ply-yarn drill according to described work PON stomochord, is then to notify the optical switch control module to close the optical module of the described work PON mouth of being switched;
Described ply-yarn drill Service Processing Module also is used to receive protects the notice of switching, the data of the work PON mouth that the operation of the described protection of instruction PON mouth is switched when protecting the PON mouth at this ply-yarn drill, and will protect the current state of PON mouth to be changed to operating conditions, when the current state of the work PON mouth that will be switched during at this ply-yarn drill by the work PON mouth switched is changed to standby attitude;
Described optical switch control module also is used for closing according to described notice the optical module of the described work PON mouth of being switched, and opens the optical module of described protection PON mouth.
11. equipment as claimed in claim 8 is characterized in that:
Described protection PON stomochord draws and the PON stomochord of working draws the employing slot number and the PON port numbers identifies jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010002845.6A CN102130718B (en) | 2010-01-20 | 2010-01-20 | A kind of network element device of protection switching of backbone optical path and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010002845.6A CN102130718B (en) | 2010-01-20 | 2010-01-20 | A kind of network element device of protection switching of backbone optical path and method |
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| CN102130718A true CN102130718A (en) | 2011-07-20 |
| CN102130718B CN102130718B (en) | 2015-08-12 |
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| CN201010002845.6A Expired - Fee Related CN102130718B (en) | 2010-01-20 | 2010-01-20 | A kind of network element device of protection switching of backbone optical path and method |
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| CN103546833A (en) * | 2012-07-09 | 2014-01-29 | 上海斐讯数据通信技术有限公司 | Service restoration method and system in Gigabit Passive Optical Network (GPON) |
| CN103546833B (en) * | 2012-07-09 | 2018-04-06 | 上海斐讯数据通信技术有限公司 | Service restoration method and system in GPON |
| CN103139066A (en) * | 2013-01-29 | 2013-06-05 | 大唐移动通信设备有限公司 | Source switching method, main control equipment and node equipment |
| US9918151B2 (en) | 2013-06-27 | 2018-03-13 | Zte Corporation | Optical network unit, and communications system and method |
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