CN103117798B - The method that after OLT power-off restarting, ONU configures fast quick-recovery - Google Patents
The method that after OLT power-off restarting, ONU configures fast quick-recovery Download PDFInfo
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Abstract
The method that after the invention provides OLT power-off restarting, ONU configures fast quick-recovery, including: S1) value of optical network unit attribute is classified, simplify optical network unit configuration file content；S2), after optical line terminal is restarted, main control unit thereon communicates with line card；S3) main control unit transmits optical network unit configuration file to line card；S4), after configuration file end of transmission, line card enables passive optical network port, and optical network unit is reached the standard grade again；S5) line card passes through message sink thread, it is thus achieved that the response message of optical network unit；S6) line card optical network unit to succeeding in registration, issues the information in optical network unit configuration file parallel.ONU configuration quickly can be distributed to ONU physically when OLT device powers on and restarts by the method.
Description
Technical field
EPON(Ethernet passive optical network belonging to the present invention) field local side OLT (optical line terminal) device system software enhancement and treatment.
Background technology
(1) ONU(optical network unit) reach the standard grade during, configuration recover flow process introduction
1, configuration flow when single ONU reaches the standard grade；
After ONU powers on; actively " LinkDiscovery " (link discovery) message, request would generally be reported to register in OLT device to OLT device, after OLT device license ONU registration; OLT device can send a series of configuration order 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 the most, this order configuration process, generally just can complete in 1～3 second.
2, configuration flow when a large amount of ONU reach the standard grade:
In engineering practice, when after OLT device power-off restarting, it is common that substantial amounts of ONU collective simultaneously reaches the standard grade.Such as, for the OLT1600C equipment of Guangdong Donyan Network Technologies Co., Ltd., equipment has 10 PON(EPONs) port, at most can hang 32 ONU under each PON, when full configuration, whole equipment can hang 320 ONU.When these 320 ONU reach the standard grade simultaneously, OLT device needs to perform this each ONU once registration, lower configuration flow.
Here there are two key points:
(1) 320 ONU reports " LinkDiscovery " message simultaneously, and OLT device to have sufficiently fast processing speed, can 320 " LinkDiscovery " message one all not received with not leaking；Otherwise, if processing and lost ONU " LinkDiscovery " message not in time, it will cause this ONU to lose in OLT system；
(2) after having received these 320 " LinkDiscovery " message, OLT device needs to use the shortest time to register each ONU, lower configuration.Assume that each ONU needs to spend 1.5 seconds the soonest, if using the mode of serial process, then processed 320 ONU and be accomplished by the time of 480 seconds (8 minutes).
(2) adverse effect in engineer applied
After OLT device powers on, complete the configuration of whole ONU, averagely altogether need 5～20 minutes, sometimes for 30 minutes, having had a strong impact on the efficiency of equipment, the man-machine friendly that equipment uses is excessively poor, and equipment control people to wait 20～30 minutes and just can complete configuration, last ONU starts from powering on to wait 20～30 minutes and could normally work, and is easily caused user's complaint, the complaint connected below.
Summary of the invention
The technical problem to be solved is: a kind of method that after providing OLT power-off restarting, ONU configures fast quick-recovery, and ONU configuration quickly can be distributed to ONU physically when OLT device powers on and restarts by the method.
The technical solution adopted in the present invention is: the method that after OLT power-off restarting, ONU configures fast quick-recovery, including:
S1) value of optical network unit attribute is classified, simplify optical network unit configuration file content；
S2), after optical line terminal is restarted, main control unit thereon communicates with line card；
S3) main control unit transmits optical network unit configuration file to line card；
S4), after configuration file end of transmission, line card enables passive optical network port, and optical network unit is reached the standard grade again；
S5) line card passes through message sink thread, it is thus achieved that the response message of optical network unit；
S6) line card optical network unit to succeeding in registration, issues the information in optical network unit configuration file parallel.
Described method, the classification of step S1 optical network unit attribute is divided into default value and user specified value, and gives tacit consent to use default value, unless the configuration of optical network unit is specified by user；User specified value is only preserved in optical network unit configuration file.
Described method, in step S3, main control unit transmits the data in optical network unit configuration file by multiple process thread parallels to each line card, and the reception message that each process thread is put in the response message classification of line card is kept in queue by a receiving thread.
Described method, in step S3, as a example by transmitting the auto-negotiation of optical network unit ethernet port, multiplexing, speed, 4 attributes of stream control, the message format of main control unit transmission optical network unit configuration file see table:
Described method, in step S5, line card receives the response message of optical network unit by a message sink thread；In step S6, line card sends thread by multiple configurations and issues the information in optical network unit configuration file to optical network unit.
Described method, the message classification received is put into each reception message configuring transmission thread according to aging mechanism and is kept in queue by message sink thread.
Described method, step S3 respectively processes the execution flow process of thread and includes:
A1) main control unit processes thread and obtains the data in optical network unit configuration file from its memory data structure；
A2) process thread and press master-slave communication message format group bag configuration message；
A3) process thread and configuration message is sent to line card；
A4) process the once corresponding reception message of thread traverses and keep in queue, check the response message whether having corresponding line card in queue, if it is not, obstruction, waiting-timeout are in this queue；If being directly entered next step；
A5) return A1 step, continue to issue next configuration.
Described method, the handling process of the message sink thread of step S5 includes:
B1) message sink thread check optical network unit response message from passive optical network port number；
B2) during message sink thread checks the message sink queue of this passive optical network port, if having repetition message；If it has, then the response message before Shan Chuing, this response message is inserted message sink queue, enter step B5；Otherwise enter next step；
B3) check that this message sink queue takes up room the most excessive；
B4) if it has, then check in message sink queue whether there is aging message, if having, deleting aging response message, being inserted into this response message, enter step B5；Otherwise enter next step；
B4) check that whether this message sink queue takes up room more than marginal value, if so, delete the last a plurality of message of message sink queue, this response message is inserted queue；Otherwise, directly this response message is inserted queue；
B5) return step B1, next response message is processed；If without next response message, then waiting the arrival of lower a piece of news.
Described method, the configuration of step S6 sends the execution flow process of thread and includes:
C1) from the beginning of the 1st of the 1st optical network unit configuration data table, checking that this list item is configured the most, if do not configured, entering step C3；If be configured, continue checking for the next item of optical network unit configuration data table, till finding the list item not configured, subsequently into step C3；If whole projects of the configuration data table of this optical network unit are configured the most, enter next step；
C2) check the configuration data table of next optical network unit by the same method of step C1, until find certain optical network unit configuration data table do not configure list item till；If the configuration data table of all optical network units has configured complete, then enter step C6；
C3) this thread format organization on request does not configures the configuration message of list item, sends configuration message to optical network unit；
C4) the reception message of EPON mouth belonging to this thread traverses once this optical network unit keeps in queue, checks the response message whether having this optical network unit in queue, if it is not, obstruction, waiting-timeout are in this queue；Otherwise enter next step；
C5) continue checking for the next item of optical network unit configuration data table, if this configuration data table the most all travels through one time, return step C2, next optical network unit is configured；
C6) (such as 10s) after waiting for a period of time, carry out the traversal configuration process of next round, return step C1.
Advantages of the present invention: ONU configuration quickly can be distributed to ONU physically by above-mentioned technology when OLT device powers on and restarts by the present invention, in practice, for 128 ONU of full configuration on single line card, can complete issuing of all ONU configuration at 60 seconds～about 90 seconds.Solve that in engineering practice ONU configuration distributing speed is slow, length setup time, user complain the practical problem of complaint.
Accompanying drawing explanation
Fig. 1 is line card message receiving thread flow chart.
Fig. 2 is that line card message sends thread flow figure.
Fig. 3 is that ONU configures data transport stream journey figure.
Detailed description of the invention
The present invention, by the value of ONU attribute is categorized as default value, user specified value, simplifies configuration file content by only preserving user specified value mode in configuration file；By self-defined private communication message, the mode carrying a large amount of configuration information in single message reduces master-slave communication configuration message number；By queue caching reception, message burin-in process technology, it is ensured that the message that ONU reports is not lost；By various ways such as multi-thread concurrent treatment technologies, the ONU that will be saved in main control unit in file system configures data, is quickly sent to line card by main control unit, then by line card, ONU is configured data and be distributed to rapidly each ONU.
It is described in further detail the present invention below in conjunction with the accompanying drawings.
(1) classification of ONU attribute configuration value
The value of each attribute of ONU, can be divided into selection default value and select user specified value two class.
Default value is the value that this attribute of ONU is selected under most of service conditions.The auto-negotiation state of such as ONU ethernet port, in most of the cases the auto-negotiation of ethernet port is on, and therefore the default value of this attribute is " Enable " (enable).
User specified value refers to that user does not select default value, and is because the needs that engineering is actual, has selected other a legitimate value.The auto-negotiation state of such as ONU ethernet port, user can not select default value " Enable ", and selects " Disable " (closedown).
In OLT system in design for ONU configuration file, for the configuration of ONU all properties, all select a default value, after so can guarantee that ONU powers on, it is not necessary to do other operation any, just can normally work, and the use requirement of most of user can be met.
It addition, use default value to also have following two advantage:
One is, default value is the default configuration of OLT system, it is not necessary to by main control unit, this default configuration is sent to line card, but is directly issued by default value by line card and be configured to ONU.So can reduce the master-slave communication number of times between main control unit and line card.
Two are, default value need not preserve in configuration file, only preserves user specified value in configuration file.So can reduce the size of configuration file, thus decrease main control unit to the parsing of configuration file, process, delivery time, improve configuration speed.
(2) ONU is quickly configured data and is sent to line card by main control unit
After OLT powers on and restarts successfully, main control unit reads configuration file from file system and resolves, and the configuration data after then resolving are stored in the memory data structure of main control unit.
After line card succeeds in registration on main control unit, OLT system takes following measure, and ONU related configuration data in main control unit memory data structure is quickly transmitted line card.
1, multiple threads, transmit configuration data to line card parallel
As a example by Guangdong Donyan Network Technologies Co., Ltd.'s OLT device Vista1600f, opening 6 threads, wherein 1 receiving thread in main control unit, 5 process thread.Receiving thread is for receiving the confirmation response returned from line card；Can install 10 line cards during 1600f equipment full configuration, 5 process the transmission that each process thread parallel in thread processes the configuration data of corresponding 2 line cards.
(1) receiving thread performs flow process
In order to prevent line card to be sent to the confirmation response of master control, it is lost because receiving thread is busy, only arranges receiving thread only to do something, it may be assumed that the confirmation response message that will receive, put into after 5 reception message are kept in queue by slot number classification and return immediately.(corresponding 1 the reception message of every 2 line cards keeps in queue)
(2) process thread and perform flow process
5 thread parallels work simultaneously, and the execution flow process of the most single thread is:
■ obtains configuration data from memory data structure；
■ presses master-slave communication message format group bag configuration message；
Message is sent to line card by ■；
First ■ travels through once corresponding reception message and keeps in queue, checks the response message whether having correspondence in queue, if it is not, block, waiting-timeout in this queue, most waiting-timeouts 1 second, result has 3 kinds of situations:
A. in queue, inquire configuration successful response message；
B. in queue, inquire configuration failure response message, at most repeat to issue 3 times；
C. wait time-out, at most repeat to issue 3 times；
■ returns the 1st step, continues to issue next configuration.
2, between master control and line card, use self-defining special master-slave communication message format, single message disposably carries a large amount of ONU and configures data
As a example by Guangdong Donyan Network Technologies Co., Ltd.'s OLT device Vista1600f, self-defined master-slave communication message has a following features:
(1) message carries a plurality of configuration attribute and multiple valued combinations, uses AttributesItem entry to specify the number of a plurality of attribute valued combinations in figure below；
(2) ONU authentication number, UNI(User Network Interface) port numbers, use the form of bitmap, each of such as byte represents an ONU, and 4 byte integer just can specify 32 ONU, so specifies substantial amounts of configuration object with a small amount of data space.
As a example by Guangdong Donyan Network Technologies Co., Ltd.'s 1600f equipment, concrete self-defining message format is as follows:
(3) line card opens PON port, reaches the standard grade in ONU Unified Set
When ONU is configured after data are completely transferred to line card by main control unit, and main control unit is finally noticed line card ONU configuration data transmission and completed.
Now line card has completed the establishment of all ONU configuration data structure in internal memory, and after line card receives this message, line card enables PON port, reaches the standard grade during now ONU starts Unified Set.
(4) configuration data are quickly distributed to each ONU configuration by line card
Line card uses multi-threading parallel process technology, is rapidly completed the registration of ONU and issuing of configuration data.
1, receive message and keep in queue
Line card is designed with multiple reception message and keeps in queue, be used for temporarily depositing the unsolicited message from ONU that line card receives, alarm, command response.
Such as: Guangdong Donyan Network Technologies Co., Ltd.'s 1600f equipment, 4 PON mouths are had on each line card, respectively being designed with 1 reception message for each PON mouth and keep in queue, each reception message keeps in queue for depositing the unsolicited message of most 32 ONU, alarm, command response under corresponding PON.
(1) receive message and keep in the feature of queue:
■ uses chained list mode, dynamically distributes；
■ uses time aging mechanism, extracts overtime untreated message, and the space of anti-dynamic distribution increases without limitation；
■ uses space aging mechanism, and after the space of dynamically distribution reaches to set the upper limit, oldest message will picked-off, for newly received message vacating space；
■ appropriate design message ageing time, the maximum space upper limit；Ensure in the case of the busiest, the most nonvoluntary dropping packets.
(2) receive message and keep in the data structure of queue:
2, message sink thread
Line card is designed with 1 message sink thread, is exclusively used in below reception line card all in ONU, such as 1600f equipment, the unsolicited message of totally 128 ONU, the response that alerts, order under 4 PON mouths.
Hurry because receiving thread processes to prevent ONU from sending next message, have little time to process and be dropped, only arrange receiving thread only to do something, it may be assumed that receive message, put into after 4 corresponding reception message keep in queue by the classification of PON slogan and return immediately.
It addition, insert before queue in message, receiving thread also checks for following three things:
(1) before new information inserts queue, checking in queue and there are identical message, the message of repetition will be deleted, and message identical in queue only retains last received one；
(2) when queue takes up room and exceedes maximum 80%, starting to check the life span of queue tail message, if it exceeds ageing time, this message will be deleted from queue；
(3) when queue takes up room and exceedes maximum 98%, last 5 message of queue tail will be deleted.
See accompanying drawing 1, receiving thread handling process:
(1) use select () function etc. to stay on socket filec descriptor, use read () function to receive message packet；Then inspection message is from which PON mouth, and occupies the access mutex amount of corresponding message receiving queue；
(2) check in this PON mouth queue, if having repetition message；
(3) check that whether this PON mouth queue takes up room more than 80%；
It is: delete message aging in queue；
No: directly message to be inserted queue, return；
(4) check that whether this PON mouth queue takes up room more than 98%；
It is: delete last 5 message, message is inserted queue to return；
No: directly message to be inserted queue, return；
(5) the access mutex amount of corresponding message receiving queue is discharged.
3, configuration sends thread
Line card is designed with multiple configuration and sends thread, configure data for issuing ONU parallel.Such as: Guangdong Donyan Network Technologies Co., Ltd.'s 1600f equipment, line card has 4 PON mouths, respectively open a configuration for each PON mouth and send thread, process the configuration data distributing of most 32 ONU under this PON mouth.
See accompanying drawing 2, configuration transmission thread flow:
(1) from the beginning of 1#ONU, from the beginning of the 1st of this ONU configuration data table the, checking that this list item is configured the most, if be configured, continuing checking for the next item of ONU configuration data table；
(2) if list item does not configures, format organization's configuration message on request, transmission configuration message to ONU；
(3) first travel through once this PON mouth correspondence to receive message and keep in queue (the select () function in figure is used for etc. to be received, return the most immediately when there being message to arrive and perform below step, wait the most always or etc. until time-out), check in queue whether have this ONU response message, without, then block, waiting-timeout in this queue, most waiting-timeouts 1 second, result has 3 kinds of situations:
■ inquires this ONU configuration successful response message, this entry configuration successful of labelling in queue；
■ inquires this ONU configuration failure response message, this entry configuration successful of labelling in queue；
■ waits time-out, this entry configuration failure of labelling；
Entry for this entry configuration failure of labelling, it will again issue in poll in next time.
(4) continue checking for the next item of ONU configuration data table, if this ONU configuration data table the most all travels through one time, then next ONU is configured；
(5) after 32 ONU all configure one time, the traversal configuration of next round, such iterative cycles are proceeded.
The theoretical time of wall scroll configuration distributing:
Wall scroll configuration required time: about 100ms；
Single ONU all configurations entry issues the theoretical time of a time:
ONU at most configures entry 20～about 30, altogether needs about 2s～3s；
The theoretical time that under single PON, ONU issues:
Lower 32 ONU of single PON all configure complete, require time for: about 60s～90s.
Corrective measure:
(1) time-critical node: wait the time-out of ONU response after wall scroll configuration distributing.Generally ONU can provide response to configuration order in 100ms, but, owing to the CPU disposal ability of different ONU is different, with a ONU under different ruuning situations the most different to the processing speed of configuration order, send thread and wait the time-out time of ONU response, be typically designed to 1s～2s.
(2) opening more multi-configuration simultaneously and send thread, further raising issues the ability of ONU configuration parallel.Such as, if the dominant frequency of line card CPU is at more than 300MHZ, a configuration distributing thread can be designed by every 16 ONU.
Claims (7)
- The method that after 1.OLT optical line terminal power-off restarting, ONU optical network unit configures fast quick-recovery, it is characterised in that including:S1) value of optical network unit attribute is classified, simplify optical network unit configuration file content；Wherein, the classification of optical network unit attribute is divided into default value and user specified value, and gives tacit consent to use default value, unless the configuration of optical network unit is specified by user；User specified value is only preserved in optical network unit configuration file；S2), after optical line terminal is restarted, main control unit thereon communicates with line card；S3) main control unit transmits optical network unit configuration file to line card；The message format of optical network unit configuration file see table:S4), after configuration file end of transmission, line card enables passive optical network port, and optical network unit is reached the standard grade again；S5) line card passes through message sink thread, it is thus achieved that the response message of optical network unit；S6) line card optical network unit to succeeding in registration, issues the information in optical network unit configuration file parallel.
- Method the most according to claim 1, it is characterized in that: in step S3, main control unit transmits the data in optical network unit configuration file by multiple process thread parallels to each line card, and the reception message that each process thread is put in the response message classification of line card is kept in queue by a receiving thread.
- Method the most according to claim 1, it is characterised in that: in step S5, line card receives the response message of optical network unit by a message sink thread；In step S6, line card sends thread by multiple configurations and issues the information in optical network unit configuration file to optical network unit.
- Method the most according to claim 3, it is characterised in that: the message classification received is put into each reception message configuring transmission thread according to aging mechanism and is kept in queue by message sink thread.
- Method the most according to claim 2, it is characterised in that step S3 respectively processes the execution flow process of thread and includes:A1) main control unit processes thread and obtains the data in optical network unit configuration file from its memory data structure；A2) process thread and press master-slave communication message format group bag configuration message；A3) process thread and configuration message is sent to line card；A4) process the once corresponding reception message of thread traverses and keep in queue, check the response message whether having corresponding line card in queue, if it is not, obstruction, waiting-timeout are in this queue；If being directly entered next step；A5) return A1 step, continue to issue next configuration.
- Method the most according to claim 4, it is characterised in that the handling process of the message sink thread of step S5 includes:B1) message sink thread check optical network unit response message from passive optical network port number；B2) during message sink thread checks the message sink queue of this passive optical network port, if having repetition message；If it has, then the response message before Shan Chuing, this response message is inserted message sink queue, enter step B6；Otherwise enter next step；B3) check that this message sink queue takes up room the most excessive；B4) if it has, then check in message sink queue whether there is aging message, if having, deleting aging response message, being inserted into this response message, enter step B6；Otherwise enter next step；B5) check that whether this message sink queue takes up room more than marginal value, if so, delete the last a plurality of message of message sink queue, this response message is inserted queue；Otherwise, directly this response message is inserted queue；B6) return step B1, next response message is processed；If without next response message, then waiting the arrival of lower a piece of news.
- Method the most according to claim 4, it is characterised in that the configuration of step S6 sends the execution flow process of thread and includes:C1) from the beginning of the 1st of the 1st optical network unit configuration data table, checking that this list item is configured the most, if do not configured, entering step C3；If be configured, continue checking for the next item of optical network unit configuration data table, till finding the list item not configured, subsequently into step C3；If whole projects of the configuration data table of this optical network unit are configured the most, enter next step；C2) check the configuration data table of next optical network unit by the same method of step C1, until find certain optical network unit configuration data table do not configure list item till；If the configuration data table of all optical network units has configured complete, then enter step C6；C3) this thread format organization on request does not configures the configuration message of list item, sends configuration message to optical network unit；C4) the reception message of EPON mouth belonging to this thread traverses once this optical network unit keeps in queue, checks the response message whether having this optical network unit in queue, if it is not, obstruction, waiting-timeout are in this queue；Otherwise enter next step；C5) continue checking for the next item of optical network unit configuration data table, if this configuration data table the most all travels through one time, return step C2, next optical network unit is configured；C6), after waiting for a period of time, carry out the traversal configuration process of next round, return step C1.
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| 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 |
| CN105049171B (en) * | 2015-07-10 | 2018-02-13 | 上海斐讯数据通信技术有限公司 | A kind of optical network local side apparatus method of data synchronization and system |
| CN108781168B (en) * | 2016-01-29 | 2022-09-13 | 昕诺飞控股有限公司 | Method and apparatus for distributed configuration management in an application control network |
| CN112769639B (en) * | 2020-12-22 | 2022-09-30 | 杭州迪普科技股份有限公司 | Method and device for parallel issuing configuration information |
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| CN101567799A (en) * | 2008-04-21 | 2009-10-28 | 上海未来宽带技术及应用工程研究中心有限公司 | Automatic configuring method of optical network unit |
| CN101516047A (en) * | 2009-04-03 | 2009-08-26 | 烽火通信科技股份有限公司 | ONU automatic upgrading method in EPON access system |
| CN102223256A (en) * | 2011-07-26 | 2011-10-19 | 烽火通信科技股份有限公司 | Method and system for multi-ONU (optical network unit) automatic upgrading in GPON (gigabit-capable passive optical network) access system |
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| CN103117798A (en) | 2013-05-22 |
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