CN103117798A - Optical network unit (ONU) configuration fast restoring method after optical line terminal (OLT) undergoes outage and restart - Google Patents
Optical network unit (ONU) configuration fast restoring method after optical line terminal (OLT) undergoes outage and restart Download PDFInfo
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Abstract
The invention provides an optical network unit (ONU) configuration fast restoring method after an optical line terminal (OLT) undergoes outage and restart. The ONU configuration fast restoring method comprises the following steps. Firstly, sorting is performed on dereferencing of optical network unit attributes, and configuration file contents of the optical network unit are simplified. Secondly, after an optical line terminal is restarted, a main control disc on the optical line terminal is communicated with a line card. Thirdly, the main control disc transmits network unit configuration files to the line card. Fourthly, after configuration file transmission is finished, the line card enables a passive optical network port and the optical network unit to be online again. Fifthly, the line card obtains response information in the network unit through an information receiving thread. Sixthly, the line card parallelly issues information in optical network unit configuration files to an optical network unit with successful register. According to the ONU configuration fast restoring method after the OLT undergoes outage and restart, when electricity on an OLT device is restarted, ONU configuration can be rapidly distributed to an ONU entity.
Description
Technical field
EPON(Ethernet passive optical network under the present invention) field local side OLT (optical line terminal) device system software optimization process technology.
Background technology
(1) ONU(optical network unit) in upper line process, the configuration restore flow process is introduced
Configuration flow when 1, single ONU reaches the standard grade;
After ONU powers on; usually can initiatively report " Link Discovery " (link discovery) message to OLT equipment; request is registered on OLT equipment; after OLT equipment license ONU registration; OLT equipment can send a series of configuration orders item by item to ONU, is used for realizing the function of user's request.For single ONU, if the order of configuration is not very many, this command configuration process just can be completed within 1～3 second usually.
Configuration flow when 2, a large amount of ONU reach the standard grade:
In engineering practice, after the OLT device powers down was restarted, normally a large amount of ONU collective simultaneously reached the standard grade.For example, grind the OLT1600C equipment of network technology limited company for Guang Dongdong, have 10 PON(EPONs on equipment) port, can hang at most 32 ONU under each PON, whole equipment can be hung 320 ONU when full configuration.When these 320 ONU reached the standard grade simultaneously, OLT equipment need to be carried out once registration, lower configuration flow to this each ONU.
Two key points are arranged here:
(1) 320 ONU reports " Link Discovery " message simultaneously, and OLT equipment will have enough fast processing speed, 320 one of " Link Discovery " message all can not received with not leaking; Otherwise, if process untimely ONU " Link Discovery " message of having lost, will cause this ONU to lose in the OLT system;
(2) after receiving these 320 " Link Discovery " message, OLT equipment need to the shortest time to each ONU register, lower configuration.Suppose that each ONU need to spend 1.5 seconds the soonest, if adopt the mode of serial process, handling 320 ONU just needs the time of 480 seconds (8 minutes).
(2) adverse effect in engineering is used
After the OLT device power, complete the configuration of whole ONU, on average altogether need 5～20 minutes, sometimes need 30 minutes, had a strong impact on the efficient of equipment, the non-constant of man-machine friendly that equipment uses, the equipment control people will wait 20～30 minutes and just can complete configuration, last ONU begins to wait for ability normal operation in 20～30 minutes from power on, easily causes the user's complaint, the complaint that connect below.
Summary of the invention
Technical problem to be solved by this invention is: the method for the fast quick-recovery of ONU configuration after a kind of OLT power-off restarting is provided, and the method can be distributed to the ONU configuration on the ONU entity when the OLT device power is restarted fast.
The technical solution adopted in the present invention is: the method for the fast quick-recovery of ONU configuration after the OLT power-off restarting comprises:
S1) value of optical network unit attribute is classified, simplify the optical network unit configuration file content;
S2) after optical line terminal was restarted, main control unit and ply-yarn drill on it communicated;
S3) main control unit is to ply-yarn drill transmission light network element configurations file;
S4) after the configuration file end of transmission, ply-yarn drill enables passive optical network port, and optical network unit is reached the standard grade again;
S5) ply-yarn drill by the message sink thread, obtains the response message of optical network unit;
S6) optical network unit of ply-yarn drill to succeeding in registration, the parallel information that issues in the optical network unit configuration file.
Described method, the classification of step S1 optical network unit attribute is divided into default value and user specified value, and acquiescence uses default value, unless the user specifies the configuration of optical network unit; Only preserve user specified value in the optical network unit configuration file.
Described method, in step S3, main control unit is by the parallel data in each ply-yarn drill transmission light network element configurations file of a plurality of processing threads, and by a receiving thread, the response message classification of ply-yarn drill put into the temporary formation of receipt message of each processing threads.
Described method, in step S3, take 4 attributes of auto-negotiation, multiplex (MUX), speed, Flow Control of transmission light network element ethernet port as example, the message format of main control unit transmission light network element configurations file sees the following form:
Described method, in step S5, ply-yarn drill receives the response message of optical network unit by a message sink thread; In step S6, ply-yarn drill issues information in the optical network unit configuration file by a plurality of configuration send-threads to optical network unit.
Described method, the message sink thread is put into the temporary formation of the receipt message that respectively configures send-thread according to aging mechanism with the message classification that receives.
Described method, the execution flow process of each processing threads of step S3 comprises:
A1) the main control unit processing threads obtains the data in the optical network unit configuration file from its internal storage data structure;
A2) processing threads is pressed master-slave communication message format group bag configuration message;
A3) processing threads sends to ply-yarn drill with configuration message;
A4) the once temporary formation of receipt message of correspondence of processing threads traversal checks in formation whether the response message of corresponding ply-yarn drill is arranged, if do not have, obstruction, waiting-timeout are in this formation; Directly enter next step if having;
A5) return to the A1 step, continue to issue next configuration.
Described method, the handling process of the message sink thread of step S5 comprises:
B1) the message sink thread check the optical network unit response message from passive optical network port number;
B2) the message sink thread checks in the message sink formation of this passive optical network port, and whether repetition message is arranged; If yes, the response message before the deletion, insert the message sink formation with this response message, enters step B5; Otherwise enter next step;
B3) check whether this message sink formation takes up room excessive;
B4) if yes, check whether there is aging message in the message sink formation, if having, delete aging response message, then insert this response message, enter step B5; Otherwise enter next step;
B4) check that this message sink formation takes up room whether greater than critical value, if the last a plurality of message of deletion message sink formation are inserted formation with this response message; Otherwise, directly this response message is inserted formation;
B5) return to step B1, next response message is processed; If without next response message, wait for the arrival of lower a piece of news.
Described method, the execution flow process of the configuration send-thread of step S6 comprises:
C1) since the 1st of the 1st optical network unit configuration data table, check whether this list item is configured, if not configuration enters step C3; If be configured, continue to check the next item of optical network unit configuration data table, until till finding the list item of not configuration, then enter step C3; If whole projects of the configuration data table of this optical network unit all are configured, enter next step;
C2) check the configuration data table of next optical network unit by the same method of step C1, until till finding the not configuration list item of certain optical network unit configuration data table; If it is complete that the configuration data table of all optical network units has all configured, enter step C6;
C3) this thread on request format organization do not configure the configuration message of list item, send configuration message to optical network unit;
C4) the once temporary formation of receipt message of the affiliated EPON mouth of this optical network unit of this thread traverses checks in formation whether the response message of this optical network unit is arranged, if do not have, obstruction, waiting-timeout are in this formation; Otherwise enter next step;
C5) continue to check the next item of optical network unit configuration data table, if this configuration data table has all traveled through one time from the beginning to the end, return to step C2, next optical network unit is configured;
C6) wait for a period of time after (as 10s), carry out the traversal layoutprocedure of next round, return to step C1.
Advantage of the present invention: the present invention can be distributed to the ONU configuration on the ONU entity when the OLT device power is restarted fast by above-mentioned technology, in practice, for 128 ONU of full configuration on single ply-yarn drill, can complete issuing of all ONU configurations about 60 seconds～90 seconds.Solved the practical problem that ONU configuration distributing speed is slow in engineering practice, setup time long, the user complains complaint.
Description of drawings
Fig. 1 is ply-yarn drill message receiving thread flow chart.
Fig. 2 is ply-yarn drill message send-thread flow chart.
Fig. 3 is that the ONU configuration data transmits flow chart.
Embodiment
The present invention is categorized as default value, user specified value by the value to the ONU attribute, simplifies configuration file content by only preserve the user specified value mode in configuration file; By self-defined private communication message, carry the mode of a large amount of configuration informations and reduce master-slave communication configuration message number in single message; By the formation buffer memory receive, message burin-in process technology, guarantee that the message that ONU reports do not lose; By various ways such as multi-thread concurrent treatment technologies, with the ONU configuration data that is kept in main control unit in file system, be sent to ply-yarn drill by main control unit fast, then by ply-yarn drill, the ONU configuration data be distributed to rapidly each ONU.
Be described in further detail the present invention below in conjunction with accompanying drawing.
(1) classification of ONU attribute configuration value
The value of the various attributes of ONU can be divided into and select default value and select user specified value two classes.
Default value is the value that this attribute of ONU is selected under most of operating positions.The auto-negotiation state of ONU ethernet port for example, in most of the cases the auto-negotiation of ethernet port is opened, so the default value of this attribute is " Enable " (enabling).
User specified value refers to that the user does not select default value, but because the needs of engineering reality, has selected other a legal value.The auto-negotiation state of ONU ethernet port for example, the user can not select default value " Enable ", and selects " Disable " (closing).
In design for the ONU configuration file in the OLT system, for the configuration of ONU all properties, all selected a default value, after guaranteeing that like this ONU powers on, do not need to do any other operation, just can work, and can satisfy most of users' instructions for use.
In addition, use default value to also have following two advantages:
The one,, default value is the default configuration of OLT system, need to this default configuration be sent to ply-yarn drill by main control unit, is configured to ONU but directly default value is issued by ply-yarn drill.Can reduce like this master-slave communication number of times between main control unit and ply-yarn drill.
The 2nd,, default value need to not preserved in configuration file, only preserves user specified value in configuration file.Can reduce the size of configuration file like this, thereby reduce parsing, processing, the delivery time of main control unit to configuration file, improve configuration speed.
(2) main control unit is sent to ply-yarn drill with the ONU configuration data fast
When OLT power on restart successfully after, main control unit reads configuration file and resolves from file system, the configuration data after then resolving is stored in the internal storage data structure of main control unit.
After succeeding in registration on main control unit, the OLT system takes following measure when ply-yarn drill, with ONU relevant configuration data Kuai speed Chuan send Give ply-yarn drill in main control unit internal storage data structure.
1, a plurality of threads, parallel to ply-yarn drill transmission configuration data
Grind the network technology OLT of limited company equipment Vista1600f as example take Guang Dongdong, open 6 threads in main control unit, 1 receiving thread wherein, 5 processing threads.Receiving thread is used for reception and replys from the confirmation that ply-yarn drill returns; During 1600f equipment full configuration, 10 ply-yarn drills can be installed, the transmission of the configuration data of corresponding 2 ply-yarn drills of each processing threads parallel processing in 5 processing threads.
(1) receiving thread is carried out flow process
In order to prevent that ply-yarn drill from sending to the confirmation of master control to reply, be lost because receiving thread is busy, receiving thread is only arranged only to do something, that is: the confirmation response message that will receive is put into by the slot number classification and is returned immediately after 5 receipt messages are kept in formation.(the temporary formation of corresponding 1 receipt message of every 2 ply-yarn drills)
(2) processing threads is carried out flow process
5 thread parallels are worked simultaneously, and wherein the execution flow process of single thread is:
■ obtains configuration data from the internal storage data structure;
■ presses master-slave communication message format group bag configuration message;
■ sends to ply-yarn drill with message;
At first ■ travels through the temporary formation of once corresponding receipt message, and whether check has corresponding response message in formation, if do not have, obstruction, waiting-timeout are in this formation, and waiting-timeout is 1 second at most, and result has 3 kinds of situations:
A. inquire the configuration successful response message in formation;
B. inquire the configuration failure response message in formation, repeat at most to issue 3 times;
C. wait timeout, repeat at most to issue 3 times;
■ returned to for the 1st step, continued to issue next configuration.
2, between master control and ply-yarn drill, adopt self-defining special-purpose master-slave communication message format, disposablely in single message carry a large amount of ONU configuration datas
Grind the network technology OLT of limited company equipment Vista1600f as example take Guang Dongdong, self-defined master-slave communication message has following characteristics:
Carry the combination of many configuration attributes and multiple value in (1) message, adopt Attributes Item entry to specify the number of many attribute value combinations in figure below;
(2) ONU authentication number, UNI(User Network Interface) port numbers adopts the form of bitmap, ONU of each expression of byte for example, and 4 byte integer just can be specified 32 ONU, like this with a small amount of a large amount of configuration object of data space appointment.
Grind the network technology 1600f of limited company equipment as example take Guang Dongdong, concrete self-defining message format is as follows:
(3) ply-yarn drill is opened the PON port, reaches the standard grade in the ONU Unified Set
After main control unit all was sent to ply-yarn drill with the ONU configuration data, main control unit was announced at last the transmission of ply-yarn drill ONU configuration data and is completed.
This moment, ply-yarn drill was completed the establishment of all ONU configuration data structures in internal memory, and after ply-yarn drill received this message, ply-yarn drill enabled the PON port, and this moment, ONU began to reach the standard grade in Unified Set.
(4) ply-yarn drill is distributed to each ONU configuration fast with configuration data
Ply-yarn drill adopts the multi-threaded parallel treatment technology, completes fast the registration of ONU and issuing of configuration data.
1, the temporary formation of receipt message
Be designed with the temporary formation of a plurality of receipt messages in ply-yarn drill, be used for temporarily depositing spontaneous message, alarm, the command response from ONU that ply-yarn drill receives.
For example: Guang Dongdong grinds the network technology 1600f of limited company equipment, 4 PON mouths are arranged on each ply-yarn drill, respectively be designed with the temporary formation of 1 receipt message for each PON mouth, the temporary formation of each receipt message is used for depositing spontaneous message, alarm, the command response from maximum 32 ONU under corresponding PON.
(1) characteristics of the temporary formation of receipt message:
■ adopts chained list mode, dynamic assignment;
■ adopts the time aging mechanism, extracts overtime untreated message, prevents that the space of dynamic assignment from increasing without limitation;
■ adopts the space aging mechanism, and after the space of dynamic assignment reached capping, the oldest message will picked-off, and is the new message vacating space that receives;
■ appropriate design message ageing time, the maximum space upper limit; Guarantee in the situation that the busiest, also nonvoluntary dropping packets.
(2) data structure of the temporary formation of receipt message:
2, message sink thread
Be designed with 1 message sink thread in ply-yarn drill, be exclusively used in and receive below ply-yarn drill all ONU, for example in 1600f equipment, from replying of the spontaneous message of totally 128 ONU, alarm, order under 4 PON mouths.
Be dropped in order to prevent that message that ONU sends from processing to do, have little time to process because of receiving thread, receiving thread is only arranged only to do something, that is: receive message, return immediately after putting into the temporary formation of 4 corresponding receipt messages by the classification of PON slogan.
In addition, before message was inserted formation, receiving thread also checked following three things:
(1) before new information inserts formation, check in formation whether had identical message, the message of repetition is with deleted, and identical message only keeps last received one in formation;
(2) when formation takes up room over maximum 80%, begin to check the life span of formation trailer messages, if surpass ageing time, this message will be deleted from formation;
(3) when formation takes up room over maximum 98%, last 5 message of formation afterbody are with deleted.
Referring to accompanying drawing 1, the receiving thread handling process:
(1) adopt select () function to wait on the socket filec descriptor, adopt read () function receipt message message; Then check message from which PON mouth, and occupy the access mutex amount of corresponding message receiving queue;
(2) check in this PON mouth formation, whether repetition message is arranged;
(3) check that this PON mouth formation takes up room whether greater than 80%;
Be: aging message in the deletion formation;
No: as directly message to be inserted formation, return;
(4) check that this PON mouth formation takes up room whether greater than 98%;
Be: delete last 5 message, message is inserted formation, return;
No: as directly message to be inserted formation, return;
(5) discharge the access mutex amount of corresponding message receiving queue.
3, configuration send-thread
Be designed with a plurality of configuration send-threads in ply-yarn drill, be used for the parallel ONU configuration data that issues.For example: Guang Dongdong grinds the network technology 1600f of limited company equipment, and 4 PON mouths are arranged on ply-yarn drill, respectively opens a configuration send-thread for each PON mouth, and the configuration data of processing maximum 32 ONU under this PON mouth issues.
Referring to accompanying drawing 2, configuration send-thread flow process:
(1) from 1#ONU, from the 1st of this ONU configuration data table, check whether this list item is configured, if be configured, continue to check the next item of ONU configuration data table;
(2) if list item does not configure, format organization's configuration message, send configuration message to ONU on request;
(3) (the select () function in figure is used for waiting for reception at first to travel through once the temporary formation of the corresponding receipt message of this PON mouth, just return immediately when having message to arrive carry out below step, otherwise just wait for always or etc. until overtime), check in formation whether this ONU response message is arranged, if do not have, obstruction, waiting-timeout are in this formation, and waiting-timeouts are 1 second at most, and result has 3 kinds of situations:
■ inquires this ONU configuration successful response message in formation, this entry configuration successful of mark;
■ inquires this ONU configuration failure response message in formation, this entry configuration successful of mark;
The ■ wait timeout, this entry configuration failure of mark;
For the entry of this entry configuration failure of mark, will again issue in next poll.
(4) continue to check the next item of ONU configuration data table, if this ONU configuration data table has all traveled through one time from the beginning to the end, then next ONU is configured;
(5) after 32 ONU all configure one time, proceed the traversal configuration of next round, so iterative cycles.
The theoretical time of wall scroll configuration distributing:
Wall scroll configuration required time: 100ms left and right;
All configuration entries of single ONU issue the theoretical time of one time:
ONU configures at most entry 20～30 left and right, altogether needs 2s～3s left and right;
The theoretical time that under single PON, ONU issues:
Lower 32 ONU of single PON all configuration are complete, need the time: about 60s～90s.
Corrective measure:
(1) time-critical node: wait for after the wall scroll configuration distributing that ONU replys overtime.Usually ONU can provide configuration order in 100ms and reply, but, because the CPU disposal ability of different ONU is different, also different with a ONU processing speed to configuration order under different ruuning situations, send-thread is waited for the time-out time that ONU replys, and is typically designed to 1s～2s.
(2) open simultaneously more polygamy and put send-thread, further improve the parallel ability that issues the ONU configuration.For example, if the dominant frequency of ply-yarn drill CPU more than 300MHZ, can design a configuration distributing thread by every 16 ONU.
Claims (9)
1.OLT the method for the fast quick-recovery of ONU configuration after power-off restarting is characterized in that comprising:
S1) value of optical network unit attribute is classified, simplify the optical network unit configuration file content;
S2) after optical line terminal was restarted, main control unit and ply-yarn drill on it communicated;
S3) main control unit is to ply-yarn drill transmission light network element configurations file;
S4) after the configuration file end of transmission, ply-yarn drill enables passive optical network port, and optical network unit is reached the standard grade again;
S5) ply-yarn drill by the message sink thread, obtains the response message of optical network unit;
S6) optical network unit of ply-yarn drill to succeeding in registration, the parallel information that issues in the optical network unit configuration file.
2. method according to claim 1, it is characterized in that: the classification of step S1 optical network unit attribute is divided into default value and user specified value, and acquiescence uses default value, unless the user specifies the configuration of optical network unit; Only preserve user specified value in the optical network unit configuration file.
3. method according to claim 1, it is characterized in that: in step S3, main control unit is by the parallel data in each ply-yarn drill transmission light network element configurations file of a plurality of processing threads, and by a receiving thread, the response message classification of ply-yarn drill put into the temporary formation of receipt message of each processing threads.
4. method according to claim 1, it is characterized in that: in step S3, the message format of main control unit transmission light network element configurations file sees the following form:
5. method according to claim 1 is characterized in that: in step S5, ply-yarn drill receives the response message of optical network unit by a message sink thread; In step S6, ply-yarn drill issues information in the optical network unit configuration file by a plurality of configuration send-threads to optical network unit.
6. method according to claim 5 is characterized in that: the message sink thread is put into the temporary formation of the receipt message that respectively configures send-thread according to aging mechanism with the message classification that receives.
7. method according to claim 3, is characterized in that, the execution flow process of each processing threads of step S3 comprises:
A1) the main control unit processing threads obtains the data in the optical network unit configuration file from its internal storage data structure;
A2) processing threads is pressed master-slave communication message format group bag configuration message;
A3) processing threads sends to ply-yarn drill with configuration message;
A4) the once temporary formation of receipt message of correspondence of processing threads traversal checks in formation whether the response message of corresponding ply-yarn drill is arranged, if do not have, obstruction, waiting-timeout are in this formation; Directly enter next step if having;
A5) return to the A1 step, continue to issue next configuration.
8. method according to claim 6, is characterized in that, the handling process of the message sink thread of step S5 comprises:
B1) the message sink thread check the optical network unit response message from passive optical network port number;
B2) the message sink thread checks in the message sink formation of this passive optical network port, and whether repetition message is arranged; If yes, the response message before the deletion, insert the message sink formation with this response message, enters step B5; Otherwise enter next step;
B3) check whether this message sink formation takes up room excessive;
B4) if yes, check whether there is aging message in the message sink formation, if having, delete aging response message, then insert this response message, enter step B5; Otherwise enter next step;
B4) check that this message sink formation takes up room whether greater than critical value, if the last a plurality of message of deletion message sink formation are inserted formation with this response message; Otherwise, directly this response message is inserted formation;
B5) return to step B1, next response message is processed; If without next response message, wait for the arrival of lower a piece of news.
9. method according to claim 6, is characterized in that, the execution flow process of the configuration send-thread of step S6 comprises:
C1) since the 1st of the 1st optical network unit configuration data table, check whether this list item is configured, if not configuration enters step C3; If be configured, continue to check the next item of optical network unit configuration data table, until till finding the list item of not configuration, then enter step C3; If whole projects of the configuration data table of this optical network unit all are configured, enter next step;
C2) check the configuration data table of next optical network unit by the same method of step C1, until till finding the not configuration list item of certain optical network unit configuration data table; If it is complete that the configuration data table of all optical network units has all configured, enter step C6;
C3) this thread on request format organization do not configure the configuration message of list item, send configuration message to optical network unit;
C4) the once temporary formation of receipt message of the affiliated EPON mouth of this optical network unit of this thread traverses checks in formation whether the response message of this optical network unit is arranged, if do not have, obstruction, waiting-timeout are in this formation; Otherwise enter next step;
C5) continue to check the next item of optical network unit configuration data table, if this configuration data table has all traveled through one time from the beginning to the end, return to step C2, next optical network unit is configured;
C6) wait for a period of time after, carry out the traversal layoutprocedure of next round, return to step C1.
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| CN104093092A (en) * | 2014-07-18 | 2014-10-08 | 上海斐讯数据通信技术有限公司 | Restarting recovery method of optical network system and OLT |
| CN104320283A (en) * | 2014-11-03 | 2015-01-28 | 中国人民解放军空军装备研究院雷达与电子对抗研究所 | Supervisory system and method of to-air shooting management system |
| CN104363125A (en) * | 2014-11-27 | 2015-02-18 | 上海斐讯数据通信技术有限公司 | Method and device for configuring optical network system and optical network system |
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| CN108781168A (en) * | 2016-01-29 | 2018-11-09 | 飞利浦照明控股有限公司 | Decentralized configuration management in application control network |
| CN112769639A (en) * | 2020-12-22 | 2021-05-07 | 杭州迪普科技股份有限公司 | Method and device for parallel issuing configuration information |
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