CN106027195A - Method and device for recognizing channel structure and protocol type of SDH line - Google Patents
Method and device for recognizing channel structure and protocol type of SDH line Download PDFInfo
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- CN106027195A CN106027195A CN201511009713.5A CN201511009713A CN106027195A CN 106027195 A CN106027195 A CN 106027195A CN 201511009713 A CN201511009713 A CN 201511009713A CN 106027195 A CN106027195 A CN 106027195A
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- data channel
- data
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- sdh
- byte
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1611—Synchronous digital hierarchy [SDH] or SONET
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
Abstract
The invention provides a method and device for recognizing the channel structure and protocol type of an SDH line, so as to avoid the dependence on a line operator, and to improve the recognition rate of the channel structure and protocol type of the SDH line. The method comprises the steps: analyzing the pointer expenditure inputted into the SDH line, so as to obtain the number of data channels in the SDH line; and analyzing the data services provided by the data channels according to the relation between the value of an inherent byte of path expenditure of each data channel and the data service provided by the data channel. According to the technical scheme of the invention, the method and device avoid manual intervention, and can improve the recognition rate and accuracy of the data channel and protocol type of the SDH line.
Description
Technical field
The invention belongs to the communications field, particularly relate to a kind of SDH line channel structure and protocol type of identifying
Method and apparatus.
Background technology
Synchronous transmission system (Synchronous Digital Hierarchy, SDH) agreement is to pass in data at present
The host-host protocol of defeated aspect large-scale use.SDH circuit passes through time division multiplex, de-multiplexing technique can be simple
Complete the conversion between low rate circuit and high-speed circuitry.As a kind of host-host protocol, SDH circuit is same
Time can carry various data service, such as telephony data service, computer data business, POS, GFP,
ATM, TUG and WAN business etc..
During the docking of SDH equipment circuit, it will be clear that channel design and the bearing protocol of docking circuit is known on ground,
Configuring equipment according to known channel design and bearing protocol, equipment could normally work, and resolves from circuit
Go out data.
The method of the existing SDH of knowing line channel structure and protocol type is before configuration SDH equipment,
Understand to the operator of SDH circuit by the way of artificial.But, this method excessively relies on operator,
Inconvenient or when cannot get in touch with operator, the progress that will dally over one's work, additionally, manually understand SDH
The channel design of circuit and bearing protocol efficiency are also the lowest.
Summary of the invention
It is an object of the invention to provide a kind of method identifying SDH line channel structure and protocol type and
Device, to avoid the dependence to line operator, improves channel design and the knowledge of protocol type of SDH circuit
Other efficiency.
First aspect present invention provides a kind of SDH line channel structure and method of protocol type of identifying, described
Method includes:
Analyze the pointer overhead in input SDH circuit to know the number of the data channel in described SDH circuit
Amount；
The value of the intrinsic byte of the path cost according to each described data channel and the carrying of described data channel
The relation of data service, analyzes the data service of described data channel carrying.
Further, the described pointer overhead analyzed in input SDH circuit is to know in described SDH circuit
The quantity of data channel, including:
By to the analysis of the high N position of the pointer value of time slot in SDH circuit, judging a data channel
Beginning time slot.
Further, described intrinsic byte is the C2 byte of path cost of data channel.
Further, described method also includes: for POS service channel, sentence by configuring experimental configuration
The Reinforced turf of disconnected described POS service channel and cyclic redundancy check (CRC) configuring condition.
Further, described method also includes: for general framing procedure GFP data channel, by analyzing
H4 byte recovers the data message in GFP data channel.
Second aspect present invention provides a kind of SDH line channel structure and device of protocol type of identifying, described
Device includes:
First analyzes module, for analyzing the pointer overhead in input SDH circuit to know described SDH line
The quantity of the data channel in road；
Second analyzes module, for the intrinsic byte according to the path cost of each described data channel value with
The relation of the data service of described data channel carrying, analyzes the data service of described data channel carrying.
Further, described first analysis module includes:
Time slot judging unit, for by the analysis of the high N position of the pointer value of time slot in SDH circuit,
Judge the beginning time slot of a data channel.
Further, described intrinsic byte is the C2 byte of path cost of data channel.
Further, described device also includes: configuration determination module, for for POS service channel, logical
Cross configuration experimental configuration to judge Reinforced turf and the cyclic redundancy check (CRC) configuring condition of described POS service channel.
Further, described device also includes: data message recovers module, for for general framing procedure
GFP data channel, recovers the data message in GFP data channel by analyzing H4 byte.
Knowable to the invention described above technical scheme, owing to the pointer overhead in SDH circuit has containing of determining
Justice, therefore, knows the number in described SDH circuit by analyzing the pointer overhead in input SDH circuit
It is a kind of automation process according to the quantity of passage, eliminates manual intervention, SDH track data passage can be improved
The efficiency identified and accuracy；Similarly, for each data channel, the intrinsic byte of its path cost
Value also there is the implication determined, therefore, according to the value of the intrinsic byte of the path cost of each data channel
With the relation of the data service that described data channel carries, the data service of analytical data passage carrying is also one
Plant automation process, eliminate manual intervention, the efficiency of SDH line protocol type identification can be improved with accurate
Property.
Accompanying drawing explanation
Fig. 1 is identification SDH line channel structure and the method for protocol type of the embodiment of the present invention one offer
Realize schematic flow sheet；
Fig. 2 is identification SDH line channel structure and the device knot of protocol type of the embodiment of the present invention two offer
Structure schematic diagram；
Fig. 3 is identification SDH line channel structure and the device knot of protocol type of the embodiment of the present invention three offer
Structure schematic diagram；
Fig. 4-a is identification SDH line channel structure and the device of protocol type of the embodiment of the present invention four offer
Structural representation；
Fig. 4-b is identification SDH line channel structure and the device of protocol type of the embodiment of the present invention five offer
Structural representation；
Fig. 5-a is identification SDH line channel structure and the device of protocol type of the embodiment of the present invention six offer
Structural representation；
Fig. 5-b is identification SDH line channel structure and the device of protocol type of the embodiment of the present invention seven offer
Structural representation.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and beneficial effect clearer, below in conjunction with accompanying drawing
And embodiment, the present invention is further elaborated.Should be appreciated that described herein being embodied as
Example only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the present invention provides a kind of and identifies SDH line channel structure and the method for protocol type, described side
Method includes: analyze the pointer overhead in input SDH circuit to know the data channel in described SDH circuit
Quantity；The value of the intrinsic byte of the path cost according to each described data channel is held with described data channel
The relation of the data service carried, analyzes the data service of described data channel carrying.The embodiment of the present invention also carries
SDH line channel structure and the device of protocol type is identified for corresponding.It is described in detail individually below.
Refer to accompanying drawing 1, be identification SDH line channel structure and the protocol class of the embodiment of the present invention one offer
The method of type realize schematic flow sheet, mainly include the following steps that S101 and step S102:
S101, the pointer overhead analyzed in input SDH circuit leads to the data knowing in described SDH circuit
The quantity in road.
Specifically, by the analysis of the high N position of the pointer value of time slot in SDH circuit, judging one
The beginning time slot of data channel, it is possible to know the quantity of data channel in described SDH circuit.Because it is logical
Cross the pointer overhead analyzed in input SDH circuit, the cascade structure of this circuit pointer can be obtained, thus can
To analyze, this SDH circuit has how many data channel.As a example by the SDH circuit of 10G, a 10G
SDH circuit in have 192 time slots, by analyze 192 time slots pointer value in high 4 judge
It is whether the beginning time slot of a data channel, thus obtains that this SDH circuit has how many data channel.
S102, carries with described data channel according to the value of the intrinsic byte of the path cost of each data channel
The relation of data service, analyze the data service of described data channel carrying.
In embodiments of the present invention, the intrinsic byte of the path cost of each data channel can be data channel
The C2 byte of path cost.C2 byte is the High Order Path Overhead byte in SDH expense, is signal
Flag byte, the multiplexing structure of instruction VC frame and the character of information payload.The value of C2 byte is led to data
There is certain relation in the data service of road carrying, as shown in table 1 below
The corresponding relation of the data service that the value of table 1 C2 byte carries with data channel
| The value (16 system) of C2 byte | Data service |
| 02 | TUG business |
| 13 | ATM business |
| 16/CF | POS business |
| 1B | GFP business |
| 1A | WAN business |
TUG, ATM, POS, GFP and WAN of above-mentioned table 1 be respectively Tributary Unit Group,
Asynchronous Transfer Mode, Packet Over SDH, Generic Framing Procedure and
The abbreviation of Wide Area Network.
For each data service in above-mentioned table 1, the invention provides different processing modes.For POS
Service channel, judges Reinforced turf and the cyclic redundancy school of described POS service channel by configuring experimental configuration
Test configuring condition.Specifically, Reinforced turf switch is used, by judge to recover from POS service channel
Data check the most correctly comes to identify further whether this POS service channel configures through Reinforced turf；Use
CRC16/32 switchs, by judging that the data check recovered from POS service channel the most correctly enters
The cyclic redundancy check (CRC) (Cyclic Redundancy Check, CRC) of one this POS service channel of step identification
Configuring condition, i.e. configure is CRC16 verification or CRC32 verification.
For general framing procedure (Generic Framing Procedure, GFP) data channel, by dividing
Analysis H4 byte recovers the data message in GFP data channel.Specifically, for GFP data channel,
The H4 byte of its each passage can be analyzed, recover its sequence instruction (sequence indicator) expense,
Combine GFP data channel by sequence indicator expense, recover GFP data channel further
In message.
And for ATM, TUG and WAN business, ATM, TUG and WAN can be directly fed to respectively
Processing equipment carries out data convert.
Knowable to the identification SDH line channel structure of above-mentioned accompanying drawing 1 example and the method for protocol type, due to
Pointer overhead in SDH circuit has the implication determined, therefore, by analyzing in input SDH circuit
Pointer overhead knows that the quantity of the data channel in described SDH circuit is a kind of automation process, eliminates
Manual intervention, can improve efficiency and the accuracy of SDH track data channel recognition；Similarly, for each
Individual data channel, the value of the intrinsic byte of its path cost also has the implication determined, therefore, according to each
The relation of the data service that the value of the intrinsic byte of the path cost of data channel carries with described data channel,
The data service of analytical data passage carrying is also a kind of automation process, eliminates manual intervention, can improve
The efficiency of SDH line protocol type identification and accuracy.
Refer to accompanying drawing 2, be identification SDH line channel structure and the protocol class of the embodiment of the present invention two offer
The structural representation of the device of type.For convenience of description, accompanying drawing 2 illustrate only relevant to the embodiment of the present invention
Part.The identification SDH line channel structure of accompanying drawing 2 example and the device of protocol type can be accompanying drawings 1
The identification SDH line channel structure of example and the executive agent of the method for protocol type.The knowledge of accompanying drawing 2 example
The device of other SDH line channel structure and protocol type mainly includes that the first analysis module 201 and second is analyzed
Module 202, wherein:
First analyzes module 201, for analyzing the pointer overhead in input SDH circuit to know described SDH
The quantity of the data channel in circuit；
Second analyzes module 202, for the intrinsic byte according to the path cost of each data channel value with
The relation of the data service of data channel carrying, the data service of analytical data passage carrying.
It should be noted that the identification SDH line channel structure of the figures above 2 example and the dress of protocol type
In the embodiment put, the division of each functional module is merely illustrative of, in actual application can as required,
The configuration requirement of such as corresponding hardware or the convenient consideration of the realization of software, and above-mentioned functions is distributed by not
With functional module complete, will the inside of device of described identification SDH line channel structure and protocol type
Structure is divided into different functional modules, to complete all or part of function described above.And, real
In the application of border, the corresponding functional module in the present embodiment can be to be realized by corresponding hardware, it is also possible to by
Corresponding hardware performs corresponding software and completes, and such as, aforesaid first analyzes module, can be to have to hold
Pointer overhead in row Such analysis input SDH circuit is to know data channel in described SDH circuit
The hardware of quantity, the such as first analyzer, it is also possible to be able to carry out corresponding computer program thus complete before
State general processor or other hardware devices of function；The most as the aforementioned second analyzes module, can be to hold
The data industry that row carries with described data channel according to the value of the intrinsic byte of the path cost of each data channel
The relation of business, analyzes the hardware of the data service of described data channel carrying, the such as second analyzer, it is possible to
Being to be able to carry out corresponding computer program thus complete the general processor of aforementioned function or other hardware sets
Standby (each embodiment that this specification provides all can apply foregoing description principle).
First analysis module 201 of accompanying drawing 2 example can include time slot judging unit 301, such as accompanying drawing 3 institute
Show identification SDH line channel structure and the device of protocol type that the embodiment of the present invention three provides.Time slot judges
Unit 301 is for by the analysis of the high N position of the pointer value of time slot in SDH circuit, judging one
The beginning time slot of data channel.Because by analyzing the pointer overhead in input SDH circuit, can be somebody's turn to do
The cascade structure of circuit pointer, has how many data channel such that it is able to analyze in this SDH circuit.With
As a example by the SDH circuit of 10G, the SDH circuit of a 10G has 192 time slots, time slot judging unit
301 judge whether it is opening of a data channel by high 4 in the pointer value of 192 time slots of analysis
Beginning time slot, thus obtain that this SDH circuit has how many data channel.
In the identification SDH line channel structure of above-mentioned accompanying drawing 2 or accompanying drawing 3 example and the device of protocol type,
Intrinsic byte can be the C2 byte of the path cost of data channel.
Intrinsic byte at the path cost of each data channel can be the C2 of the path cost of data channel
During byte, the identification SDH line channel structure of accompanying drawing 2 or accompanying drawing 3 example and the device of protocol type also may be used
To include configuring module 401, as shown in accompanying drawing 4-a or accompanying drawing 4-b, the embodiment of the present invention four or embodiment five carry
The identification SDH line channel structure of confession and the device of protocol type.Configuration determination module 401 for for
By configuring experimental configuration, POS service channel, judges that the Reinforced turf of described POS service channel and circulation are superfluous
Remaining verification configuring condition.Specifically, using Reinforced turf switch, configuration module 401 is by judging from POS industry
Business routing restoration data check out the most correctly comes to identify further whether this POS service channel passes through
Reinforced turf configures；Using CRC16/32 switch, configuration module 401 is extensive by judging from POS service channel
The data check appeared again the most correctly carrys out to identify further the CRC configuring condition of this POS service channel,
I.e. configure is CRC16 verification or CRC32 verification.
Intrinsic byte at the path cost of each data channel can be the C2 of the path cost of data channel
During byte, the identification SDH line channel structure of accompanying drawing 2 or accompanying drawing 3 example and the device of protocol type also may be used
To include that data message recovers module 501, the embodiment of the present invention six or real as shown in accompanying drawing 5-a or accompanying drawing 5-b
Execute identification SDH line channel structure and the device of protocol type that example seven provides.Data message recovers module
501 for for general framing procedure GFP data channel, recovering GFP data by analyzing H4 byte
Data message in passage.Specifically, for GFP data channel, it is permissible that data message recovers module 501
Analyze the H4 byte of its each passage, recover its sequence instruction (sequence indicator) expense, pass through
Sequence indicator expense combines GFP data channel, recovers the report in GFP data channel further
Literary composition.
It should be noted that the contents such as mutual, the execution process of information between each module/unit of said apparatus,
Due to the inventive method embodiment based on same design, its technique effect brought and the inventive method are implemented
Example is identical, and particular content can be found in the narration in the inventive method embodiment, and here is omitted.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment
The program that can be by completes to instruct relevant hardware, and this program can be stored in a computer-readable and deposit
In storage media, storage medium may include that read only memory (ROM, Read Only Memory), with
Machine access memorizer (RAM, Random Access Memory), disk or CD etc..
The identification SDH line channel the structure above embodiment of the present invention provided and the method for protocol type and
Device is described in detail, and principle and the embodiment of the present invention are carried out by specific case used herein
Illustrating, the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；With
Time, for one of ordinary skill in the art, according to the thought of the present invention, in detailed description of the invention and application
All will change in scope, in sum, this specification content should not be construed as limitation of the present invention.
Claims (10)
1. one kind identifies SDH line channel structure and the method for protocol type, it is characterised in that described method
Including:
Analyze the pointer overhead in input SDH circuit to know the number of the data channel in described SDH circuit
Amount；
The value of the intrinsic byte of the path cost according to each described data channel and the carrying of described data channel
The relation of data service, analyzes the data service of described data channel carrying.
2. the method for claim 1, it is characterised in that the finger in described analysis input SDH circuit
Pin expense to know the quantity of the data channel in described SDH circuit, including:
By to the analysis of the high N position of the pointer value of time slot in SDH circuit, judging a data channel
Beginning time slot.
3. method as claimed in claim 1 or 2, it is characterised in that described intrinsic byte is data channel
The C2 byte of path cost.
4. method as claimed in claim 3, it is characterised in that described method also includes:
For POS service channel, add solution by configure that experimental configuration judges described POS service channel
Disturb and cyclic redundancy check (CRC) configuring condition.
5. method as claimed in claim 3, it is characterised in that described method also includes:
For general framing procedure GFP data channel, recover GFP data channel by analyzing H4 byte
In data message.
6. one kind identifies SDH line channel structure and the device of protocol type, it is characterised in that described device
Including:
First analyzes module, for analyzing the pointer overhead in input SDH circuit to know described SDH line
The quantity of the data channel in road；
Second analyzes module, for the intrinsic byte according to the path cost of each described data channel value with
The relation of the data service of described data channel carrying, analyzes the data service of described data channel carrying.
7. device as claimed in claim 6, it is characterised in that described first analyzes module includes:
Time slot judging unit, for by the analysis of the high N position of the pointer value of time slot in SDH circuit,
Judge the beginning time slot of a data channel.
Device the most as claimed in claims 6 or 7, it is characterised in that described intrinsic byte is data channel
The C2 byte of path cost.
9. device as claimed in claim 8, it is characterised in that described device also includes:
Configuration determination module, for for POS service channel, judging described by configuring experimental configuration
The Reinforced turf of POS service channel and cyclic redundancy check (CRC) configuring condition.
10. device as claimed in claim 8, it is characterised in that described device also includes:
Data message recovers module, for for general framing procedure GFP data channel, by analyzing H4
Byte recovers the data message in GFP data channel.
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Cited By (1)
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Denomination of invention: A method and device for identifying SDH line channel structure and protocol type Effective date of registration: 20200826 Granted publication date: 20181214 Pledgee: Bank of Beijing Limited by Share Ltd. Shenzhen branch Pledgor: Shenzhen Hengyang Data Co.,Ltd. Registration number: Y2020980005382 |
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