CN101184036A - Port multiplexing method and device, veneer - Google Patents
Port multiplexing method and device, veneer Download PDFInfo
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- CN101184036A CN101184036A CNA2007101724072A CN200710172407A CN101184036A CN 101184036 A CN101184036 A CN 101184036A CN A2007101724072 A CNA2007101724072 A CN A2007101724072A CN 200710172407 A CN200710172407 A CN 200710172407A CN 101184036 A CN101184036 A CN 101184036A
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Abstract
The invention discloses a port-reuse method as well as related equipment and single boards. The equipments provided by the invention comprises the first single board and the second single board; the first single board comprises a packaging unit used for packaging the input data stream and sending the packaged data stream to the second single board; the second single board comprises a de-packaging unit, which is used for de-packaging the data stream packaged by the first single board. The port-reuse method provided by the invention comprises that the input data is packaged and the packaged data stream is sent to a target single board, the target single board de-packages the data stream and draws information needed by service from the de-packaged data stream. The invention can conveniently realize the port reuse of single board.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of method and apparatus, veneer of multiplexed port.
Background technology
Along with the development of mechanics of communication, more and more higher to the bandwidth requirement of transmission equipment, people satisfy the requirement of bandwidth by the port that increases equipment veneer.Prior art one for the veneer that does not have traffic handing capacity, increases veneer or replacing and has more that the veneer of multiport increases port number.Prior art two, for the veneer that traffic handing capacity is arranged, increase possesses the veneer of traffic handing capacity to increase port number; Other possess the veneer of traffic handing capacity a perhaps multiplexing equipment; In this case, after the veneer of the veneer of increase or multiplexing equipment was handled business, the data with Business Processing sent to the purpose veneer again.
In research and practice process to prior art, the inventor finds that there is following problem in prior art:
For prior art one, have the requirement that the veneer of multiport more satisfies bandwidth by increasing veneer or replacing, correspondingly need to increase the cost input, and can not effectively utilize the existing resource of this equipment.
For prior art two, veneer that is increased or the veneer that is re-used receive the laggard industry of data and are engaged in handling, business data flow after will handling again sends to the purpose veneer, the type of service difference that different veneer is handled is re-used or the veneer that increases can only be selected the veneer of handling business of the same type with the purpose veneer for use.If there is not the veneer of handling the same type business with the purpose veneer in this equipment, just can only increase port by increasing veneer, can increase the cost input equally, can not effectively utilize the existing resource of this equipment.
Summary of the invention
The technical problem that the embodiment of the invention will solve provides the method for a kind of equipment, veneer and multiplexed port, can realize easily multiplexed port reducing cost simultaneously.
For solving the problems of the technologies described above, the method embodiment of a kind of equipment provided by the present invention, veneer and multiplexed port is achieved through the following technical solutions:
A kind of equipment comprises first veneer and second veneer,
Described first veneer comprises: encapsulation unit is used for the data flow encapsulation with input, and the data flow transmission of described encapsulation is arrived described second veneer; Described second veneer comprises: decapsulation unit is used for the data flow decapsulation with the described encapsulation of described first veneer transmission.
A kind of veneer comprises:
Encapsulation unit is used for the data flow encapsulation with input; Decapsulation unit is used to receive the data flow of the encapsulation that sends from the purpose veneer, with the data flow decapsulation of described encapsulation from the purpose veneer.
A kind of method of multiplexed port comprises:
With the data flow encapsulation of input, and with the data flow transmission of described encapsulation to the purpose veneer; Described purpose veneer extracts the needed information of Business Processing with described data flow decapsulation from the data flow of described decapsulation.
Have following beneficial effect in the technique scheme: the veneer that the embodiment of the invention provides is owing to be provided with encapsulation unit, be transferred to second veneer after the data encapsulation, realize the port of multiplexing another veneer of veneer, on the veneer that is re-used, do not need to carry out to handle with professional relevant agreement face, directly with the data flow transmission of encapsulation to second veneer, because the Data Stream Processing of encapsulation does not relate to the operation layer agreement, can make full use of the veneer port resource of this equipment.The embodiment of the invention makes full use of the port resource of at least two veneers in the equipment, has both enlarged the bandwidth of veneer port transmission, has reduced cost again.
Description of drawings
Fig. 1 is the schematic diagram that the embodiment of the invention realizes multiplexed port;
Fig. 2 is the structure chart of the equipment that provides of the embodiment of the invention;
Fig. 3 is the structure chart of the veneer that provides of the embodiment of the invention;
Fig. 4 is the method figure of the multiplexed port that provides of the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of method and apparatus, veneer of multiplexed port, is used to realize multiplexed port.
The embodiment of the invention is veneer and the method that example explanation realizes multiplexed port with PDH (Pseudo-synchronous Digital Hierarchy) (PDH, Plesiochronous Digital Hierarchy) port, but the method for veneer of the present invention and multiplexed port is not limited to and is applied to the PDH port.
Fig. 1 is the schematic diagram of the realization multiplexed port that provides of the embodiment of the invention.
Veneer 1 and veneer 2 all are connected on the equipment backboard.If the PDH port of veneer 1 is re-used, time division multiplexing (TDM Time Division Multiplexing) data flow enters the PDH port of veneer 1, enters the time slot cross unit of veneer 1 then.The time slot cross unit splits TDM stream or combination by different time slots, TDM stream after the time slot cross unit will split or make up by different time-gap sends to encapsulation unit, encapsulation unit sends to TDM stream encapsulation back the decapsulation unit of veneer 2 by backboard, the decapsulation unit of veneer 2 is with the data flow decapsulation of encapsulation, be sent to Service Processing Unit by the time slot cross unit and handle, this moment, the time slot cross unit no longer carried out any processing to the data flow after the decapsulation; If the PDH port of veneer 1 is not re-used, after TDM stream enters into the PDH port, enter the time slot cross unit of veneer 1, the time slot cross unit directly mails to Service Processing Unit with tdm traffic and carries out Business Processing after TDM stream is split or makes up by different time slot.Need to prove that the time slot cross unit press to TDM stream that time slot splits or occurred during combination at needs, if do not need TDM stream is split or combination by time slot, then the time slot cross unit is the forwarding point as a data flow.
Fig. 2 is the structure chart of the equipment that provides of the embodiment of the invention.
A kind of equipment comprises core bus and at least two veneers, i.e. first veneer 100 and second veneer 200.
Described first veneer comprises: encapsulation unit 110 is used for the data flow encapsulation with input, and the data flow of described encapsulation is transferred to described second veneer by described core bus;
Described second veneer comprises: decapsulation unit 210 is used for the data flow decapsulation with the described encapsulation of described core bus transmission.
More specifically, at the PDH port, if the transmission means of the similar Ethernet of core bus, described encapsulation unit 110 is packaged into described tdm traffic based on the TDM transmission (TOP, TDM OverPacket) of bag and wraps;
Described decapsulation unit 210 is dressed up tdm traffic with the TOP bag deblocking of described encapsulation.
With E1 is example, and E1 frame data rate is 2.048Mbps, and sample rate is 8K, and every frame comprises 32 time slots, 8 bits of each time slot.When this veneer PDH port is re-used, when the suitable TDM based on bag of core bus transmits, the veneer encapsulation unit breaks into a TOP bag with the bits of all PDH port transmission in each sampling period, per sampling period of each e1 port need be transmitted 256bits, suppose that this veneer has 4 PDH ports, then the phase need break into 256*4bits=128Bytes a TOP bag weekly.Be to guarantee the time delay of PDH stream, the TOP bag can not be long can not be too short; As long, packing and transmission can't be finished in a sampling period simultaneously, influences efficiency of transmission, and as too short, the parcel that can't guarantee that Ethernet transmits is long.
After the TOP bag is transferred to second veneer by core bus, TOP is wrapped deblocking dress up TDM stream, and be sent to Service Processing Unit by the time slot cross unit.For second veneer, Service Processing Unit can utilize more tdm traffic like this, is not subjected to the restriction of this veneer PDH port number.
Another mode adopts circuit emulation service (CES, circuit emulationservice) under the ATM framework, this agreement is packaged into ATM Adaption Layer Type 1 (AAL1, ATM AdaptionLayer Type1) cell with TDM stream and transmits.
AAL1 is applicable to the connection-oriented A service of fixed bit rate, is applicable to emulation pulse-code modulation (PCM, the Pulse Code Modulation) circuit-switched service of the constant bit rate service transmission that provides real-time.Realize AAL1, need to guarantee that communicating pair all adopts the real-time coding mode, and employing is fixedly coupled the clock synchronization with both sides.
TDM stream is packaged in the AAL1 cell in encapsulation unit 110, the AAL1 cell is transferred to the purpose veneer by core bus, purpose veneer decapsulation unit is dressed up tdm traffic with AAL1 cell deblocking, by the time slot cross unit tdm traffic is sent Service Processing Unit and is further processed.
Further, described encapsulation unit 110 comprises:
TOP seals dress unit 112, is used for being based at described encapsulated type transmission TOP when bag of time division multiplexing tdm bag, and the data flow of described input is packaged into the TOP bag;
ATM cell encapsulation unit 113 is used for when described encapsulated type is asynchronous transfer mode ATM adapting layer types 1 cell, and the data flow of described input is packaged into the ATM Adaption Layer Type 1 cell.
Equally, described decapsulation unit comprises:
TOP wraps decapsulation unit 212, is used for when the encapsulated type of the data flow of described encapsulation is the TOP bag data flow deblocking of described encapsulation being dressed up tdm traffic;
ATM cell decapsulation unit 213 is used for when the data stream type of described encapsulation is the ATM Adaption Layer Type 1 cell data flow deblocking of described encapsulation being dressed up tdm traffic.
In the time need splitting or make up by time slot to data flow from the port input,, described first veneer also comprises:
Time slot cross unit 120 is used for the data flow of input is split or combination by time slot;
Described encapsulation unit 110 is with described data flow encapsulation of pressing time slot fractionation or combination.
For guaranteeing that port or port own that each veneer can both multiplexing other veneers are re-used, each veneer all can be provided with encapsulation unit and decapsulation unit, and when the veneer port was re-used, encapsulation unit worked, during the port of multiplexing other veneers of veneer, decapsulation unit works; Equally, when the embodiment of the invention was provided at the veneer port and is re-used, this veneer can not carry out Business Processing, if but this veneer needs the port of multiplexing other veneers, then this veneer should be provided with Service Processing Unit, so that carry out professional processing during the TDM port of multiplexing other veneers.
Seeing also Fig. 3 is the single plate structure figure that the embodiment of the invention provides.
As shown in the figure, veneer comprises:
Concrete, described encapsulation unit comprises:
TOP seals dress unit 312, and being used at described encapsulated type is TOP when bag, and the data flow of described input is packaged into the TOP bag;
ATM cell encapsulation unit 313 is used for when described encapsulated type is the ATM Adaption Layer Type 1 cell, and the data flow of described input is packaged into the ATM Adaption Layer Type 1 cell.
Equally, described decapsulation unit comprises:
TOP wraps decapsulation unit 322, is used for when the encapsulated type of the data flow of described encapsulation is the TOP bag data deblocking of described encapsulation being dressed up tdm traffic;
ATM cell decapsulation unit 323 is used for when the encapsulated type of the data flow of described encapsulation is the ATM Adaption Layer Type 1 cell data deblocking of described encapsulation being dressed up tdm traffic.
If the data of veneer port input need split or make up by time slot, described veneer also comprises:
Time slot cross unit 330 is used for the data flow of input is split or combination by time slot;
Described encapsulation unit 310 is with described data flow encapsulation of pressing time slot fractionation or combination.
So far, the single plate structure introduction that the embodiment of the invention provides finishes, and the embodiment of the invention also provides the method that is applied to the multiplexed port in this veneer in addition.
Fig. 4 is the method figure of the multiplexed port that provides of the embodiment of the invention.
When needs split tdm traffic or make up by time slot, carry out this step; If do not need, then direct execution in step 402.
Data flow or encapsulation time slot cross unit that encapsulation is directly imported from port are pressed the data flow that time slot splits or makes up.Wherein, the data flow of importing from port is a tdm traffic, tdm traffic can be packaged into the TOP bag, perhaps tdm traffic is packaged into the AAL1 cell, conveniently transmits in core bus.
The purpose veneer will extract the needed information of Business Processing by the decapsulation of backboard data flow transmitted.
As if what transmit by core bus is the TOP bag, and then the purpose veneer wraps deblocking with TOP and dresses up tdm traffic; As if what transmit by core bus is the AAL1 cell, and then the purpose veneer is dressed up tdm traffic with AAL1 cell deblocking.The tdm traffic of decapsulation enters into Service Processing Unit, and the purpose veneer is further processed.
More than method and apparatus, the veneer of a kind of multiplexed port provided by the present invention is described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (13)
1. an equipment comprises first veneer and second veneer, it is characterized in that,
Described first veneer comprises: encapsulation unit is used for the data flow encapsulation with input, and the data flow transmission of described encapsulation is arrived described second veneer;
Described second veneer comprises: decapsulation unit is used for the data flow decapsulation with the described encapsulation of described first veneer transmission.
2. equipment according to claim 1 is characterized in that, described encapsulation unit comprises:
First judging unit is used to judge the encapsulated type of the data flow of described input;
TOP seals the dress unit, is used for being based at described encapsulated type transmission TOP when bag of time division multiplexing tdm bag, and the data flow of described input is packaged into the TOP bag;
The ATM cell encapsulation unit is used for when described encapsulated type is asynchronous transfer mode ATM adapting layer types 1 cell, and the data flow of described input is packaged into the ATM Adaption Layer Type 1 cell.
3. equipment according to claim 2 is characterized in that, described decapsulation unit comprises:
Second judging unit is used to judge the encapsulated type of data flow of the described encapsulation of described first veneer transmission;
TOP wraps decapsulation unit, is used for when the encapsulated type of the data flow of described encapsulation is the TOP bag data flow deblocking of described encapsulation being dressed up tdm traffic;
The ATM cell decapsulation unit is used for when the encapsulated type of the data flow of described encapsulation is the ATM Adaption Layer Type 1 cell data flow deblocking of described encapsulation being dressed up tdm traffic.
4. according to each described equipment of claim 1 to 3, it is characterized in that described first veneer also comprises:
The time slot cross unit is used for the data flow of input is split or combination by time slot;
Described encapsulation unit is with described data flow encapsulation of pressing time slot fractionation or combination.
5. a veneer is characterized in that, comprising:
Encapsulation unit is used for the data flow encapsulation with input;
Decapsulation unit is used to receive the data flow of the encapsulation that sends from the purpose veneer, with the data flow decapsulation of described encapsulation from the purpose veneer.
6. veneer according to claim 5 is characterized in that, described encapsulation unit comprises:
First judging unit is used to judge the encapsulated type of the data flow of described input;
TOP seals the dress unit, and being used at described encapsulated type is TOP when bag, and the data flow of described input is packaged into the TOP bag;
The ATM cell encapsulation unit is used for when described encapsulated type is the ATM Adaption Layer Type 1 cell, and the data flow of described input is packaged into the ATM Adaption Layer Type 1 cell.
7. veneer according to claim 6 is characterized in that, described decapsulation unit comprises:
Second judging unit is used to judge the encapsulated type of the data flow of described encapsulation from the purpose veneer;
TOP wraps decapsulation unit, is used for when the encapsulated type of the data flow of described encapsulation is the TOP bag data flow deblocking of described encapsulation being dressed up tdm traffic;
The ATM cell decapsulation unit is used for when the encapsulated type of the data flow of described encapsulation is the ATM Adaption Layer Type 1 cell data flow deblocking of described encapsulation being dressed up tdm traffic.
8. according to each described veneer of claim 5 to 7, it is characterized in that described veneer also comprises:
The time slot cross unit is used for the data flow of input is split or combination by time slot;
Described encapsulation unit is with described data flow encapsulation of pressing time slot fractionation or combination.
9. the method for a multiplexed port is characterized in that, comprising:
With the data flow encapsulation of input, and with the data flow transmission of described encapsulation to the purpose veneer;
Described purpose veneer extracts the needed information of Business Processing with described data flow decapsulation from the data flow of described decapsulation.
10. the method for multiplexed port according to claim 9 is characterized in that, before described data flow encapsulation with input, the data flow of input is pressed time slot split or make up.
11. the method according to claim 9 or 10 described multiplexed ports is characterized in that, the data flow of described input is the time division multiplexing tdm data flow.
12. the method for multiplexed port according to claim 11 is characterized in that, described is that described tdm traffic is packaged into the TOP bag with the data flow encapsulation;
Described purpose veneer is that the TOP bag deblocking of described encapsulation is dressed up tdm traffic with described data flow decapsulation.
13. the method for multiplexed port according to claim 11 is characterized in that, described is that described tdm traffic is packaged into the ATM Adaption Layer Type 1 cell with the data flow encapsulation;
Described purpose veneer is that the ATM Adaption Layer Type 1 cell deblocking of described encapsulation is dressed up tdm traffic with described data flow decapsulation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101724072A CN101184036B (en) | 2007-12-14 | 2007-12-14 | Port multiplexing method and device, veneer |
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| CN2007101724072A CN101184036B (en) | 2007-12-14 | 2007-12-14 | Port multiplexing method and device, veneer |
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| CN101184036A true CN101184036A (en) | 2008-05-21 |
| CN101184036B CN101184036B (en) | 2012-04-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315892A (en) * | 2010-07-02 | 2012-01-11 | 杭州华三通信技术有限公司 | Data forwarding device, cable fastener plates and data forwarding method |
| CN101882118B (en) * | 2009-05-05 | 2013-01-23 | 华为技术有限公司 | Single-board software acquiring and sending method, and single board, storage equipment and system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100499407C (en) * | 2004-06-16 | 2009-06-10 | 华为技术有限公司 | Expense message processing apparatus and processing method thereof |
| CN1758583B (en) * | 2004-10-09 | 2011-04-13 | 华为技术有限公司 | Clock, signal multiplex method and system |
| CN1885860B (en) * | 2005-06-24 | 2010-10-13 | 华为技术有限公司 | Single plate interface expanding system and method for expanding single plate interface |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882118B (en) * | 2009-05-05 | 2013-01-23 | 华为技术有限公司 | Single-board software acquiring and sending method, and single board, storage equipment and system |
| CN102315892A (en) * | 2010-07-02 | 2012-01-11 | 杭州华三通信技术有限公司 | Data forwarding device, cable fastener plates and data forwarding method |
| CN102315892B (en) * | 2010-07-02 | 2014-06-18 | 杭州华三通信技术有限公司 | Data forwarding device, cable fastener plates and data forwarding method |
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| CN101184036B (en) | 2012-04-25 |
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