CN109714653A - Method for accelerating CTC OAM upgrading efficiency - Google Patents
Method for accelerating CTC OAM upgrading efficiency Download PDFInfo
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- CN109714653A CN109714653A CN201811625050.3A CN201811625050A CN109714653A CN 109714653 A CN109714653 A CN 109714653A CN 201811625050 A CN201811625050 A CN 201811625050A CN 109714653 A CN109714653 A CN 109714653A
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Abstract
A method for accelerating CTC OAM upgrading efficiency comprises the following steps: the EPON OLT carries out negotiation of a CTC FileWriteRequest mode with the ONU through the expanded CTC FileWriteRequest message, the ONU analyzes the expanded size field of the sending window in the CTC FileWriteRequest message, and replies an OLT negotiation result; the OLT processes the software version file to be upgraded according to the size of the negotiated message sending window; the OLT sends a file segment of one window each time until all the FileTransferDate sub-messages in the window are sent completely, and the OLT enters a stage of waiting for the ONU to reply; the ONU receives the FileTransferDate sub-messages in sequence according to the numbers; after the OLT detects that the transmission fails or overtime, retransmitting the window FileTransferDate sub-message; and if the OLT receives the FileTransferAck message, repeatedly sending the file segments of the window until all files are transmitted. The invention greatly accelerates the message transmission efficiency, improves the upgrading efficiency and stability of the original EPON CTC standard, simultaneously considers the compatibility problem, expands the related negotiation method and is convenient for the operation and maintenance of old equipment.
Description
Technical field
The present invention relates to the fields such as the operation of EPON network and maintenance, and in particular to a kind of side for accelerating CTC OAM upgrading efficiency
Method.
Background technique
Continuous with China broadband strategy is popularized, and FTTH access net operation has been realized in ultra-large quotient in China
With ever-expanding Commercial scale proposes higher quality to the operation and maintenance of operator and requires to want with the faster time
It asks.
In the method that current China Telecom EPON standard defines the upgrading based on extension CTC OAM, it is very suitable to be based on
L2 network rather than ONU edition upgrading under IP/TCP network operating enviroment update, and reduce to the networks scarce resource such as operator IP
Waste, be conducive to quickly run and maintenance, by it is more and more large size Operation Networks use.But in view of former EPON CTC
In the new model that standard defines, OLT and ONU need transmission and receiving to each message to confirm, greatly reduce
In unit time can transmitting message quantity, therefore increase the time consumed in entire escalation process.
Summary of the invention
The technical problem to be solved by the present invention is to define for current China Telecom EPON standard based on extension CTC
OAM upgrade method above shortcomings provide a kind of method of quickening CTC OAM upgrading efficiency, based on window transmission and really
Recognize, the message transmissions greatly accelerated in the unit time are updated based on the EPON CTC OAM upgrading for carrying out the software version of ONU
Efficiency promotes the upgrading efficiency and stability of original EPON CTC standard, realizes the quick upgrading of two layers of OAM；Simultaneously in view of simultaneous
Capacitive problem, the method for extending related negotiation, facilitates the operation maintenance of old equipment.
The technical solution adopted by the present invention to solve the technical problems is:
A method of accelerating CTC OAM and upgrade efficiency, comprising the following steps:
S1, EPON OLT carry out CTC OAM upgrade mode by the CTC FileWriteRequest message and ONU of extension
Negotiation, CTC OAM upgrade mode is contained in the CTC FileWriteRequest message of the extension and sends window size；
S2, ONU receive the CTC FileWriteRequest message of extension and are parsed, if ONU supports definition
CTC OAM upgrade mode, then enter step S3, and otherwise ONU is operated according to standard EPON CTC specification；
Window size field is sent in the CTC FileWriteRequest message of S3, ONU parsing extension, and passes through extension
CTC FileTransferAck message, reply the negotiation result of the OLT transmission window size, the message of negotiation sends window
Size is less than or equal to the window size below OLT；
After S4, OLT receive the CTC FileTransferAck message of extension, window size is sent according to the message negotiated,
Software version file to be upgraded is handled, the file fragment of multiple windows, the file piece of each window are divided into
Section is assembled by the sub- message of multiple FileTransferDate；
S5, OLT send the file fragment of a window, first FileTransferDate report of each window every time
Text number is since 0 ing, incremented by successively 1, all sub- messages of FileTransferDate are sent in this window, OLT into
Enter to wait ONU recovery stage；
S6, ONU successively receive the sub- message of FileTransferDate according to number, send window when receiving finishes this
After all sub- messages of FileTransferDate, pass through this window of the CTC FileTransferAck message notifying OLT of extension
Transmission success, or pass through the transmission failure of this window of Error message notifying；
If what S7, OLT were received is the certain intervals time of Error message or OLT after this window is sent
It does not receive any reply message of ONU inside, is then retransmitted from first FileTransferDate of this window start of heading, directly
In to this window all sub- messages of FileTransferDate be sent (i.e. OLT detect transmission failure or time-out after,
Again the sub- message of this window FileTransferDate is subjected to retransmission process), enter step S6；
If what S8, OLT were received is the CTC FileTransferAck message of extension, repeatedly the corresponding step of step S5
Suddenly, the sub- message of all FileTransferDate of next window is sent, until all files end of transmission.
According to the above scheme, ONU is received after the CTC FileWriteRequest message of extension according to it in the step S2
Extended field decides whether to support the CTC OAM upgrade mode of definition, the normative content that compatibility standard EPON CTC is defined.
According to the above scheme, size of the ONU according to self-ability and resource reduction window in the step S3.
According to the above scheme, the FileTransferDate text in the step S4 in OLT establishing criteria EPON CTC specification
Part length carries out software version file fragmentation to be upgraded, compatibility standard EPON CTC specification.
According to the above scheme, OLT safeguards the transmission shape of this window as unit of each transmission window in the step S5
State, and enter and wait ONU recoil state.
According to the above scheme, each sub- message of FileTransferDate for sending window is successively opened from 0 in the step S6
Begin number, ONU when each window receives message, receive according to FileTransferDate message numbering sequence and handle to
The software version file fragmentation of upgrading.
Compared with prior art, the invention has the following advantages:
1, the present invention on the basis of EPON CTC standard, extend FileWriteRequest and
FileTransferAck field, OLT and ONU equipment mechanism can determine upgrade mode through consultation, completely compatible with primary standard；
2, proposed by the present invention improve mechanism is mainly used to reduce in EPON CTC OAM escalation process, and OLT and ONU need
To the gradually transmission/response of each upgrade file segment, the interaction times of reduction OLT and ONU and respective wait-for-response time, mention
Rise the transmitting efficiency and final file transmission efficiency of upgrade file segment；
3, proposed by the present invention improve mechanism is not limited to carry out single ONU EPON CTC OAM upgrading, can be real in batches
Now more ONU while online upgrading, promote operation and the maintenance efficiency of OLT system；
4, the retransmission mechanism based on window size defined in the method for the present invention, can by the size of flexible configuration window,
Maximum utilize ONU resource capability, can significant increase document upgrading successful efficiency；
5, the method for the present invention does not modify to the other standards method in EPON CTC standard in addition to this method description,
OLT and ONU with current commercialization can be completely compatible.
Detailed description of the invention
Fig. 1 is the method flow diagram that the present invention accelerates CTC OAM upgrading efficiency；
Fig. 2 is expanded definition CTC OAM message format of the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with drawings and examples pair
The present invention is further elaborated.
Shown in referring to Fig.1, the method that the embodiment of the present invention accelerates CTC OAM upgrading efficiency, including the following contents:
S1, EPON OLT carry out CTC OAM upgrade mode by the CTC FileWriteRequest message and ONU of extension
Negotiation, expanded definition CTC OAM message format as shown in Fig. 2, extension CTC FileWriteRequest message in include
CTC OAM upgrade mode and send window size；
S2, ONU receive the CTC FileWriteRequest message of extension and are parsed, and determine according to its extended field
The CTC OAM upgrade mode whether support defines, the normative content that compatibility standard EPON CTC is defined, if ONU supports definition
CTC OAM upgrade mode, then enter step S3, otherwise ONU according to standard EPON CTC specification operated；
Window size field is sent in the CTC FileWriteRequest message of S3, ONU parsing extension, and passes through extension
CTCFileTransferAck message, reply the negotiation result of the OLT transmission window size, it is big that the message of negotiation sends window
The small window size less than or equal to below OLT, ONU reduce the size of window according to self-ability and resource；
After S4, OLT receive the CTC FileTransferAck message of extension, window size is sent according to the message negotiated,
Software version file to be upgraded is handled, the FileTransferDate text in OLT establishing criteria EPON CTC specification
Part length carries out software version file fragmentation to be upgraded, is divided into the file fragment of multiple windows, compatibility standard EPON
The file fragment of CTC specification, each window is assembled by the sub- message of multiple FileTransferDate；
S5, OLT send the file fragment of a window, first FileTransferDate report of each window every time
Text number is since 0 ing, incremented by successively 1, in this window all sub- messages of FileTransferDate be sent (OLT with
Each transmission window is unit, safeguards the transmission state of this window), OLT, which enters, waits ONU recovery stage；
S6, each sub- message of FileTransferDate for sending window are successively numbered from 0, and ONU is in each window
Successively receive the sub- message of FileTransferDate according to the sub- message numbering of FileTransferDate, and handles to be upgraded soft
Part version file fragment passes through extension after receiving to finish all FileTransferDate message that this sends window
CTCFileTransferAck message notifying OLT this window transmission success, or pass through this window of Error message notifying
Transmission failure；
If what S7, OLT were received is the certain intervals time of Error message or OLT after this window is sent
It does not receive any reply message of ONU inside, is then retransmitted from first FileTransferDate of this window start of heading, directly
In to this window all sub- messages of FileTransferDate be sent (i.e. OLT detect transmission failure or time-out after,
Again the sub- message of this window FileTransferDate is subjected to retransmission process), enter step S6；
If what S8, OLT were received is the CTC FileTransferAck message of extension, repeatedly the corresponding step of step S5
Suddenly, the sub- message of all FileTransferDate of next window is sent, until all files end of transmission.
When the invention works, the size of the transmission window of proposition, can be flexible according to the resource capability of ONU by system manager
Configuration.
Before carrying out CTC OAM upgrading, CTC FileWriteRequest message and CTC that OLT and ONU pass through extension
FileTransferAck message sends the negotiation of window size to realize, ONU should be selected according to own resource ability.
When carrying out file fragment transmission by standard CTC FileTransferData, the transmission window of this method description
Mouthful, OLT and ONU is run after the sub- message transmissions of multiple file, carries out the transmission of the process/promise to confirm, this method is retouched
It states as a transmission window.
When there are the events such as the error of this transmission window or packet loss, then OLT starts all files report to this window
Literary retransmission mechanism, rather than start all over, effectively reduce load and the number of re-transmission.
The operating method of other CTC OAM upgrading is identical as original EPON CTC standard.
For those skilled in the art, various corresponding changes and modification can be made according to the present invention, and are owned
These corresponding changes and modification belong to the protection scope of the claims in the present invention.
Claims (6)
1. a kind of method for accelerating CTC OAM upgrading efficiency, which comprises the following steps:
S1, EPON OLT carry out the association of CTC OAM upgrade mode by the CTC FileWriteRequest message and ONU of extension
Quotient contains CTC OAM upgrade mode in the CTC FileWriteRequest message of the extension and sends window size；
S2, ONU receive the CTC FileWriteRequest message of extension and are parsed, if ONU supports the CTC of definition
OAM upgrade mode then enters step S3, and otherwise ONU is operated according to standard EPON CTC specification；
Window size field is sent in the CTC FileWriteRequest message of S3, ONU parsing extension, and passes through extension
CTC FileTransferAck message replys the negotiation result of the OLT transmission window size, and it is big that the message of negotiation sends window
The small window size less than or equal to below OLT；
After S4, OLT receive the CTC FileTransferAck message of extension, window size is sent according to the message negotiated, it will be to
The software version file of upgrading is handled, and is divided into the file fragment of multiple windows, the file fragment of each window by
Multiple sub- message assemblings of FileTransferDate；
S5, OLT send the file fragment of a window every time, and the sub- message of first FileTransferDate of each window is compiled
Number since 0, incremented by successively 1, until all sub- messages of FileTransferDate are sent in this window, OLT enters
To ONU recovery stage；
S6, ONU successively receive the sub- message of FileTransferDate according to number, send all of window when receiving finishes this
After the sub- message of FileTransferDate, transmitted by CTC this window of FileTransferAck message notifying OLT of extension
Success, or pass through the transmission failure of this window of Error message notifying；
What if S7, OLT were received be Error message or OLT within the certain intervals time after this window is sent not
Any reply message of ONU is received, then is retransmitted from first FileTransferDate of this window start of heading, until this
All sub- messages of FileTransferDate are sent in window, enter step S6；
If what S8, OLT were received is the CTC FileTransferAck message of extension, repeatedly the corresponding steps of step S5, hair
The sub- message of all FileTransferDate of next window is sent, until all files end of transmission.
2. a kind of method for accelerating CTC OAM upgrading efficiency according to claim 1, which is characterized in that the step S2
Middle ONU decides whether to support the CTC of definition according to its extended field after receiving the CTC FileWriteRequest message of extension
OAM upgrade mode, the normative content that compatibility standard EPON CTC is defined.
3. a kind of method for accelerating CTC OAM upgrading efficiency according to claim 1, which is characterized in that the step S3
Middle ONU reduces the size of window according to self-ability and resource.
4. a kind of method for accelerating CTC OAM upgrading efficiency according to claim 1, which is characterized in that the step S4
FileTransferDate file size in middle OLT establishing criteria EPON CTC specification carries out software version file to be upgraded
Fragment, compatibility standard EPON CTC specification.
5. a kind of method for accelerating CTC OAM upgrading efficiency according to claim 1, which is characterized in that the step S5
Middle OLT safeguards the transmission state of this window as unit of each transmission window, and enters and wait ONU recoil state.
6. a kind of method for accelerating CTC OAM upgrading efficiency according to claim 1, which is characterized in that the step S6
In it is each send window the sub- message of FileTransferDate be successively numbered from 0, ONU receives message in each window
When, receive according to the sub- message numbering sequence of FileTransferDate and handles software version file fragmentation to be upgraded.
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