CN106027195B - A kind of method and apparatus identifying SDH line channel structure and protocol type - Google Patents
A kind of method and apparatus identifying SDH line channel structure and protocol type Download PDFInfo
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- 125000004122 cyclic group Chemical group 0.000 claims description 8
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- 238000011084 recovery Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 6
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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
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- 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
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Abstract
The present invention provides a kind of method and apparatus for identifying SDH line channel structure and protocol type, to avoid the dependence to line operator, improves the channel design of SDH route and the recognition efficiency of protocol type.The described method includes: analyzing the pointer overhead in input SDH route to know the quantity of the data channel in the SDH route；According to the relationship of the value of the intrinsic byte of the path cost of each data channel and the data service of data channel carrying, the data service of the data channel carrying is analyzed.Technical solution provided by the invention eliminates manual intervention, and the efficiency and accuracy in SDH track data channel and protocol type identification can be improved.
Description
Technical field
The invention belongs to the communications field more particularly to it is a kind of identification SDH line channel structure and protocol type method and
Device.
Background technique
Synchronous transmission system (Synchronous Digital Hierarchy, SDH) agreement is at present in transmission side data
The transport protocol of face large-scale use.SDH route can be simply completed low rate route by time division multiplexing, de-multiplexing technique
Conversion between high-speed circuitry.As a kind of transport protocol, SDH route can carry various data services simultaneously, such as
Telephony data service, computer data business, POS, GFP, ATM, TUG and WAN business etc..
When SDH equipment route docks, need to know clearly the channel design and bearing protocol of docking route, according to known
Channel design and bearing protocol configure equipment, equipment could work normally, and data are parsed from route.
The existing method for knowing SDH line channel structure and protocol type is before configuring SDH equipment, by artificial
Mode understands to the operator of SDH route.However, this method excessively relies on operator, in inconvenience or can not get in touch with
When operator, the progress that will be dallied over one's work, in addition, manually the channel design and bearing protocol efficiency of understanding SDH route also compare
It is relatively low.
Summary of the invention
The purpose of the present invention is to provide it is a kind of identify SDH line channel structure and protocol type method and apparatus, with
The dependence to line operator is avoided, the channel design of SDH route and the recognition efficiency of protocol type are improved.
First aspect present invention provides a kind of method for identifying SDH line channel structure and protocol type, the method packet
It includes:
The pointer overhead in input SDH route is analyzed to know the quantity of the data channel in the SDH route；
According to the data of the value of the intrinsic byte of the path cost of each data channel and data channel carrying
The relationship of business analyzes the data service of the data channel carrying.
Further, the pointer overhead in the analysis input SDH route is to know the data channel in the SDH route
Quantity, comprising:
Through the high N analyses to the pointer value of time slot in SDH route, at the beginning of judging a data channel
Gap.
Further, the intrinsic byte is the C2 byte of the path cost of data channel.
Further, the method also includes: be directed to POS service channel, the POS is judged by configuring experimental configuration
The Reinforced turf and cyclic redundancy check configuring condition of service channel.
Further, the method also includes: be directed to general framing procedure GFP data channel, by analysis H4 byte come
Restore the data message in GFP data channel.
Second aspect of the present invention provides a kind of device for identifying SDH line channel structure and protocol type, described device packet
It includes:
First analysis module, for analyzing the pointer overhead in input SDH route to know the data in the SDH route
The quantity in channel；
Second analysis module, for according to the intrinsic byte of the path cost of each data channel value and the number
According to the relationship of the data service of channel carrying, the data service of the data channel carrying is analyzed.
Further, first analysis module includes:
Time slot judging unit, for by the high N analyses to the pointer value of time slot in SDH route, to judge one
Gap at the beginning of data channel.
Further, the intrinsic byte is the C2 byte of the path cost of data channel.
Further, described device further include: configuration determination module, for being directed to POS service channel, by configuring experiment
Configure the Reinforced turf and cyclic redundancy check configuring condition to judge the POS service channel.
Further, described device further include: data message recovery module, for being directed to general framing procedure GFP data
The data message in GFP data channel is restored by analysis H4 byte in channel.
From aforementioned present invention technical solution it is found that since the pointer overhead in SDH route has determining meaning,
The quantity for knowing the data channel in the SDH route by the pointer overhead in analysis input SDH route is a kind of automatic
Change process, eliminates manual intervention, and the efficiency and accuracy of SDH track data channel recognition can be improved；Similarly, for each
The value of a data channel, the intrinsic byte of path cost also has determining meaning, therefore, according to the road of each data channel
The relationship of the data service of the value of the intrinsic byte of diameter expense and data channel carrying, the data of analysis data channel carrying
Business is also a kind of automation process, eliminates manual intervention, and the efficiency of SDH line protocol type identification and accurate can be improved
Property.
Detailed description of the invention
Fig. 1 is the realization stream of the method for identification SDH line channel structure and protocol type that the embodiment of the present invention one provides
Journey schematic diagram；
Fig. 2 is the apparatus structure signal of identification SDH line channel structure provided by Embodiment 2 of the present invention and protocol type
Figure；
Fig. 3 is the apparatus structure signal of identification SDH line channel structure and protocol type that the embodiment of the present invention three provides
Figure；
Fig. 4-a is that the identification SDH line channel structure of the offer of the embodiment of the present invention four and the apparatus structure of protocol type show
It is intended to；
Fig. 4-b is that the identification SDH line channel structure of the offer of the embodiment of the present invention five and the apparatus structure of protocol type show
It is intended to；
Fig. 5-a is that the identification SDH line channel structure of the offer of the embodiment of the present invention six and the apparatus structure of protocol type show
It is intended to；
Fig. 5-b is that the identification SDH line channel structure of the offer of the embodiment of the present invention seven and the apparatus structure of protocol type show
It is intended to.
Specific embodiment
In order to which the purpose of the present invention, technical solution and beneficial effect is more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain this hair
It is bright, it is not intended to limit the present invention.
The embodiment of the present invention provides a kind of method for identifying SDH line channel structure and protocol type, which comprises
The pointer overhead in input SDH route is analyzed to know the quantity of the data channel in the SDH route；According to each number
According to the relationship of the value of the intrinsic byte of the path cost in channel and the data service of data channel carrying, the data are analyzed
The data service of channel carrying.The embodiment of the present invention also provides the dress of corresponding identification SDH line channel structure and protocol type
It sets.It is described in detail separately below.
Attached drawing 1 is please referred to, is the method for identification SDH line channel structure and protocol type that the embodiment of the present invention one provides
Implementation process schematic diagram, mainly include the following steps that S101 and step S102:
S101 analyzes the pointer overhead in input SDH route to know the quantity of the data channel in the SDH route.
Specifically, by the high N analyses to the pointer value of time slot in SDH route, to judge a data channel
Start time slot, so that it may know the quantity of the data channel in the SDH route.Because by analysis input SDH route
Pointer overhead, the cascade structure of the available route pointer are logical so as to analyze how many data in the SDH route
Road.By taking the SDH route of 10G as an example, there are 192 time slots in the SDH route of a 10G, by the pointer value for analyzing 192 time slots
In high 4 to determine whether be gap at the beginning of a data channel, to obtain how many data are logical in the SDH route
Road.
S102, according to the data of the value of the intrinsic byte of the path cost of each data channel and data channel carrying
The relationship of business analyzes the data service of the data channel carrying.
In embodiments of the present invention, the intrinsic byte of the path cost of each data channel can be the path of data channel
The C2 byte of expense.C2 byte is the High Order Path Overhead byte in SDH expense, is signal label byte, and instruction VC frame is answered
With the property of structure and information payload.There are certain relationships for the data service of value and the data channel carrying of C2 byte, such as
Shown in the following table 1
The corresponding relationship of the data service of value and the data channel carrying of 1 C2 byte of table
| 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 are Tributary Unit Group, Asynchronous respectively
Transfer Mode, Packet Over SDH, Generic Framing Procedure and Wide Area Network
Referred to as.
For each data service in above-mentioned table 1, the present invention provides different processing modes.For POS service channel,
The Reinforced turf and cyclic redundancy check configuring condition of the POS service channel are judged by configuring experimental configuration.Specifically, make
It is switched with Reinforced turf, by judging whether the data check that recovers from POS service channel correctly further identifies the POS
Whether service channel passes through Reinforced turf configuration；It is switched using CRC16/32, passes through the number for judging to recover from POS service channel
Whether correctly cyclic redundancy check (the Cyclic Redundancy of the POS service channel is further identified according to verification
Check, CRC) configuring condition, that is, what is configured is CRC16 verification or CRC32 verification.
For general framing procedure (Generic Framing Procedure, GFP) data channel, by analyzing H4 word
Section is to restore the data message in GFP data channel.Specifically, for GFP data channel, it can analyze the H4 in its each channel
Byte is restored its sequence instruction (sequence indicator) expense, is combined by sequence indicator expense
GFP data channel further restores the message in GFP data channel.
And it is directed to ATM, TUG and WAN business, it can be directly fed to ATM, TUG and WAN processing equipment respectively and carry out data also
It is former.
From the exemplary identification SDH line channel structure of above-mentioned attached drawing 1 and the method for protocol type it is found that due to SDH route
In pointer overhead there is determining meaning, therefore, the SDH is known by the pointer overhead in analysis input SDH route
The quantity of data channel in route is a kind of automation process, eliminates manual intervention, and the knowledge of SDH track data channel can be improved
Other efficiency and accuracy；Similarly, for each data channel, the value of the intrinsic byte of path cost also has determination
Meaning, therefore, according to the value of the intrinsic byte of the path cost of each data channel and the data channel carrying data
The data service of the relationship of business, analysis data channel carrying is also a kind of automation process, eliminates manual intervention, can be improved
The efficiency and accuracy of SDH line protocol type identification.
Attached drawing 2 is please referred to, is the device of identification SDH line channel structure and protocol type provided by Embodiment 2 of the present invention
Structural schematic diagram.For ease of description, only parts related to embodiments of the present invention are shown for attached drawing 2.The exemplary knowledge of attached drawing 2
The device of other SDH line channel structure and protocol type can be the exemplary identification SDH line channel structure of attached drawing 1 and protocol class
The executing subject of the method for type.The device of the exemplary identification SDH line channel structure of attached drawing 2 and protocol type mainly includes first
Analysis module 201 and the second analysis module 202, in which:
First analysis module 201, for analyzing the pointer overhead in input SDH route to know in the SDH route
The quantity of data channel；
Second analysis module 202, for logical according to the value and data of the intrinsic byte of the path cost of each data channel
The relationship of the data service of road carrying, the data service of analysis data channel carrying.
It should be noted that the implementation of the device of the exemplary identification SDH line channel structure of the figures above 2 and protocol type
In mode, the division of each functional module is merely illustrative of, and can according to need in practical application, such as the configuration of corresponding hardware
It is required that the convenient of realization of software consider, and above-mentioned function distribution is completed by different functional modules, i.e., by the knowledge
The internal structure of the device of other SDH line channel structure and protocol type is divided into different functional modules, to complete above retouch
The all or part of function of stating.Moreover, the corresponding functional module in the present embodiment can be by corresponding in practical application
Hardware realization can also execute corresponding software by corresponding hardware and complete, for example, the first analysis module above-mentioned, can be
The quantity of data channel in the SDH route is known with the pointer overhead executed in Such analysis input SDH route
Hardware, such as the first analyzer are also possible to be able to carry out general processing of the corresponding computer program to complete aforementioned function
Device or other hardware devices；Second analysis module as the aforementioned again can be execution and be opened according to the path of each data channel
The relationship of the data service of the value of the intrinsic byte of pin and data channel carrying analyzes the data of the data channel carrying
The hardware of business, such as the second analyzer are also possible to be able to carry out corresponding computer program to complete the one of aforementioned function
As processor or other hardware devices (each embodiment that this specification provides can all apply foregoing description principle).
Exemplary first analysis module 201 of attached drawing 2 may include time slot judging unit 301, and the present invention is real as shown in Fig. 3
The device of identification the SDH line channel structure and protocol type of the offer of example three is provided.Time slot judging unit 301 is used for by SDH
High N analyses of the pointer value of time slot in route, come gap at the beginning of judging a data channel.Because passing through analysis input
Pointer overhead in SDH route, the cascade structure of the available route pointer have so as to analyze in the SDH route
How many a data channel.By taking the SDH route of 10G as an example, there are 192 time slots, time slot judging unit in the SDH route of a 10G
301 pass through high 4 in the pointer value of 192 time slots of analysis to determine whether being gap at the beginning of a data channel, thus
How many data channel in the SDH route obtained.
In the device of above-mentioned attached drawing 2 or the exemplary identification SDH line channel structure of attached drawing 3 and protocol type, intrinsic byte
It can be the C2 byte of the path cost of data channel.
When the intrinsic byte of the path cost of each data channel can be the C2 byte of the path cost of data channel,
The device of attached drawing 2 or the exemplary identification SDH line channel structure of attached drawing 3 and protocol type can also include configuration module 401, such as
The identification SDH line channel structure and protocol class that the embodiment of the present invention four shown in attached drawing 4-a or attached drawing 4-b or embodiment five provide
The device of type.Configuration determination module 401 is used to be directed to POS service channel, and the POS business is judged by configuring experimental configuration
The Reinforced turf and cyclic redundancy check configuring condition in channel.Specifically, it is switched using Reinforced turf, configuration module 401 passes through judgement
Whether the data check recovered from POS service channel correctly adds solution further to identify whether the POS service channel passes through
Disturb configuration；It is switched using CRC16/32, configuration module 401 is by judging the data check recovered from POS service channel
The no correct CRC configuring condition further to identify the POS service channel, that is, what is configured is CRC16 verification or the school CRC32
It tests.
When the intrinsic byte of the path cost of each data channel can be the C2 byte of the path cost of data channel,
The device of attached drawing 2 or the exemplary identification SDH line channel structure of attached drawing 3 and protocol type can also include that data message restores mould
The identification SDH line channel structure that block 501, the embodiment of the present invention six as shown in attached drawing 5-a or attached drawing 5-b or embodiment seven provide
With the device of protocol type.Data message recovery module 501 is used to be directed to general framing procedure GFP data channel, passes through analysis
H4 byte restores the data message in GFP data channel.Specifically, for GFP data channel, data message recovery module
501 can analyze the H4 byte in its each channel, restore its sequence instruction (sequence indicator) expense, pass through
Sequence indicator expense combines GFP data channel, further restores the message in GFP data channel.
It should be noted that the contents such as information exchange, implementation procedure between each module/unit of above-mentioned apparatus, due to
Embodiment of the present invention method is based on same design, and bring technical effect is identical as embodiment of the present invention method, particular content
It can be found in the narration in embodiment of the present invention method, details are not described herein again.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage
Medium may include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random
Access Memory), disk or CD etc..
Be provided for the embodiments of the invention above identification SDH line channel structure and protocol type method and apparatus into
It has gone and has been discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, the above implementation
The explanation of example is merely used to help understand method and its core concept of the invention；Meanwhile for the general technology people of this field
Member, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this explanation
Book content should not be construed as limiting the invention.
Claims (8)
1. a kind of method for identifying SDH line channel structure and protocol type, which is characterized in that the described method includes:
Pointer overhead in analysis input SDH route is specifically led to the quantity for knowing the data channel in the SDH route
High 4 crossed in the pointer for analyzing each time slot are to determine whether be gap at the beginning of a data channel, to obtain the SDH
How many data channel in route；
According to the data service of the value of the intrinsic byte of the path cost of each data channel and data channel carrying
Relationship, analyze the data service of data channel carrying.
2. the method as described in claim 1, which is characterized in that the intrinsic byte is the C2 word of the path cost of data channel
Section.
3. method according to claim 2, which is characterized in that the method also includes:
For POS service channel, Reinforced turf and the cyclic redundancy school of the POS service channel are judged by configuring experimental configuration
Test configuring condition.
4. method according to claim 2, which is characterized in that the method also includes:
For general framing procedure GFP data channel, the data message in GFP data channel is restored by analysis H4 byte.
5. a kind of device for identifying SDH line channel structure and protocol type, which is characterized in that described device includes:
First analysis module, for analyzing the pointer overhead in input SDH route to know the data channel in the SDH route
Quantity, specifically, at the beginning of high 4 in pointer by analyzing each time slot are to determine whether be a data channel
Gap, so that how many data channel in the SDH route obtained；
Second analysis module, for logical according to the value of the intrinsic byte of the path cost of each data channel and the data
The relationship of the data service of road carrying analyzes the data service of the data channel carrying.
6. device as claimed in claim 5, which is characterized in that the intrinsic byte is the C2 word of the path cost of data channel
Section.
7. device as claimed in claim 6, which is characterized in that described device further include:
Configuration determination module judges the POS service channel by configuring experimental configuration for being directed to POS service channel
Reinforced turf and cyclic redundancy check configuring condition.
8. device as claimed in claim 6, which is characterized in that described device further include:
Data message recovery module restores GFP by analysis H4 byte for being directed to general framing procedure GFP data channel
Data message in data channel.
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| CN102420695A (en) * | 2010-09-27 | 2012-04-18 | 中国移动通信集团四川有限公司 | Access method and system of identification service at transmission marginal interface |
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| WO2001020852A1 (en) * | 1999-09-14 | 2001-03-22 | Fujitsu Limited | Artificial line exchanging system and artificial line exchanging method, and sender- and receiver-side transmitters for artificial line exchanging system |
| EP1091289B1 (en) * | 1999-10-08 | 2004-05-26 | Hewlett-Packard Company, A Delaware Corporation | Device for processing sonet or SDH frames-DS0 to channel mapping |
| CN100496045C (en) * | 2004-08-04 | 2009-06-03 | 华为技术有限公司 | Method and system for supporting data framing protocol on multi-service transmission node equipment |
| CN101834689B (en) * | 2010-02-10 | 2014-03-26 | 中国电子科技集团公司第三十研究所 | Self-adaptation analytical method of SDH (Synchronous Digital Hierarchy) frame information |
| CN104753640B (en) * | 2015-03-20 | 2019-03-12 | 中国人民解放军信息工程大学 | A kind of adaptation method and device based on network transmission link |
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