CN102217241A - Data processing methods and an access node - Google Patents
Data processing methods and an access node Download PDFInfo
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- CN102217241A CN102217241A CN2011800008120A CN201180000812A CN102217241A CN 102217241 A CN102217241 A CN 102217241A CN 2011800008120 A CN2011800008120 A CN 2011800008120A CN 201180000812 A CN201180000812 A CN 201180000812A CN 102217241 A CN102217241 A CN 102217241A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/35—Switches specially adapted for specific applications
- H04L49/351—Switches specially adapted for specific applications for local area network [LAN], e.g. Ethernet switches
- H04L49/352—Gigabit ethernet switching [GBPS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
- H04L49/3054—Auto-negotiation, e.g. access control between switch gigabit interface connector [GBIC] and link
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Abstract
The invention provides a data processing method and an access node. The data processing method includes the steps of receiving downstream data; determining whether the downstream data is error data or not; if yes, replacing the downstream data by inter frame gap having the same bandwidth with the downstream data, and sending replaced data. Another data processing method includes receiving upstream data; determining whether the upstream data is auto-negotiation data or not; if yes, replacing the upstream data by inter frame gap having the same bandwidth with the upstream data, sending replace data and responding the upstream data. The invention also provides the access node.
Description
Technical field
The embodiment of the invention relates to the Ethernet access technology, relates in particular to a kind of method and access node of data processing.
Background technology
In the backbone network transmission network, the share of carrier class Ethernet service is increasing, and in the ether business, the bandwidth maximum that gigabit Ethernet (GE, Gigabit Ethernet) business occupies is one of ether business of main flow.
Development along with technology, Ethernet has new standard, transmission is also had higher requirement to GE, for example: the precision interval clock synchronous protocol standard (IEEE1588 of network measure and control system, Institute of Electrical and Electronics Engineers 1588) agreement, IEEE 1588 agreements are precise time agreements, the synchronised clock that is used for ethernet environment, can arrive the precision of submicrosecond level, and existing GE transmission means is difficult to effectively support the IEEE1588 agreement.
The inventor finds under study for action, the data transfer mode that GE supports is difficult to effectively support new procotol, IEEE1588 agreement for example, when the transmission link of certain GE equipment breaks down, can make other GE equipment initiate the auto-negotiation process because of receiving misdata, the GE equipment that receives misdata stops to send to transmission network the data of IEEE1588 agreement, have only by the time link-recovery normal after, just send the IEEE1588 protocol data again, make that the clock synchronization relation between transmission network and the GE equipment is difficult to be effectively guaranteed.Again such as, at the transmission network networking initial stage, when the GE network is carried out initialization, must guarantee that all there is GE equipment at the transmission network two ends, just can finish the auto-negotiation process, realize the initialization of network.
Summary of the invention
The embodiment of the invention provides a kind of method and access node of data processing, being used for access node handles the upstream data and the downlink data that receive, make that descending misdata can not continue to send, by avoiding the startup of auto-negotiation process, make that GE equipment can not stop to send the IEEE1588 protocol data, guaranteed the synchronized relation between transmission network and the GE equipment.Simultaneously, when receiving the auto-negotiation data, access node can respond this auto-negotiation process, and making does not need opposite equip. just can finish the auto-negotiation process.
The method of the data processing in the embodiment of the invention comprises: downlink data receiving; Judge whether downlink data is misdata; If, then use the frame gap that has a same band with downlink data to displace line data, send the data after replacing.
The method of data processing comprises in the embodiment of the invention: receive upstream data; Judge whether upstream data is the auto-negotiation data; If, then use the frame gap that has a same band with upstream data to replace upstream data, send data after replacing, and response upstream data.
Access node in the embodiment of the invention comprises: data sink is used for downlink data receiving; Data determining unit is used to judge whether downlink data is misdata; Replace transmitting element, be used for when downlink data is misdata, then use the frame gap that has a same band with downlink data to displace line data, send the data after the replacement.
Access node in the embodiment of the invention comprises: receiver is used to receive upstream data; Judging unit is used to judge whether upstream data is the auto-negotiation data; Processing unit is used for when upstream data is the auto-negotiation data, then uses the frame gap that has a same band with upstream data to replace upstream data, sends data after replacing, and response upstream data.
As can be seen from the above technical solutions, the embodiment of the invention has the following advantages:
By the upstream data and the downlink data that receive are judged, utilizing the frame gap that has a same band with descending misdata and up auto-negotiation data to carry out data replaces, and the data after the transmission replacement, make GE equipment can not start the auto-negotiation process because of receiving misdata, effectively raise the reliability of setting up synchronized relation between transmission network and the GE equipment, simultaneously, by up auto-negotiation data being replaced and are responded this auto-negotiation process, make the auto-negotiation of GE equipment not need the response of opposite equip. just can realize, improved the flexibility of auto-negotiation process.
Description of drawings
Fig. 1 is an embodiment of the invention GE network structure;
Fig. 2 is a schematic diagram of a kind of data processing method of the embodiment of the invention;
Fig. 3 is another schematic diagram of the method for a kind of data processing of the embodiment of the invention;
Fig. 4 is another schematic diagram of the method for a kind of data processing of the embodiment of the invention;
Fig. 5 is a schematic diagram of embodiment of the invention access node;
Fig. 6 is another schematic diagram of embodiment of the invention access node;
Fig. 7 is another schematic diagram of embodiment of the invention access node.
Embodiment
The embodiment of the invention provides a kind of method and access node of data processing, access node can be handled receiving data, the misdata that can effectively avoid receiving the opposite end transmission owing to GE equipment stops to send the IEEE1588 protocol data, improved the reliability of the synchronized relation between transmission network and the GE equipment, simultaneously, in GE netinit process, the auto-negotiation data that GE equipment sends can be responded by access node, have improved the flexibility of auto-negotiation process.
Technology for a better understanding of the present invention sees also Fig. 1, is the GE network structure in the embodiment of the invention, and wherein, the GE network comprises transmission network, access node and GE equipment.In the embodiment shown in fig. 1, can transmit data mutually by access node and transmission network between GE device A and the GE equipment B, for example, the GE device A sends business datum to access node C, access node C resolves business datum, and will sending to transmission network after the data encapsulation that parse, the data after the encapsulation arrive the GE equipment B through the transmission of transmission network and access node D.In embodiments of the present invention, in GE netinit process, perhaps when link breaks down, GE equipment will be initiated the auto-negotiation process.The auto-negotiation process can simply be described as: if the GE device A is initiated the auto-negotiation process, then the GE device A sends the auto-negotiation data to the GE of opposite end equipment B, if receive the auto-negotiation data of GE equipment B feedback, the auto-negotiation success then is described, after the success of auto-negotiation process, the GE device A just can send the IEEE1588 protocol data, if do not receive the auto-negotiation data of GE equipment B feedback, then the GE device A will continue to send the auto-negotiation data to the GE equipment B.Need to prove that in embodiments of the present invention, the priority of auto-negotiation data is higher than the priority of IE1588 protocol data, therefore, when equipment is initiated the auto-negotiation process, this equipment will preferentially send the auto-negotiation data.
Need to prove that the technical scheme that the embodiment of the invention is described can be used at optical transfer network (OTN, Optical Transport Network), in the SDH (Synchronous Digital Hierarchy) systems such as (SDH, Synchronous Digital Hierarchy).
See also Fig. 1, the embodiment for the method for a kind of data processing in the embodiment of the invention comprises:
201, downlink data receiving;
In embodiments of the present invention, transmission network is given access node with downlink data transmission.
202, judge whether downlink data is misdata;
Access node receives after the downlink data, judges whether downlink data is misdata.In embodiments of the present invention, when the transmission link of equipment B breaks down, access node C will receive misdata.
In embodiments of the present invention, access node can be decoded to downlink data and be judged whether downlink data is misdata.Relatively Chang Yong decoding rule is 8 bits, 10 bits (8B10B) encoding and decoding, after utilizing the 8B10B encoding and decoding that downlink data is decoded, if the binary data that obtains does not meet the decoded rule of legal data, can judge that then this downlink data is a misdata, for example, suppose that rule after the 8B10B encoding and decoding is that continuous 0 figure place is no more than 8, finding that having continuous 10 in the decoded binary data all is 0 if downlink data is resolved the decoding back, is misdata for judging this downlink data.
The 8B10B encoding and decoding are a kind of data coding/decoding methods, be meant that with 8 bit data bits of encoded be the transfer sequence of one 10 bit, the 8B10B encoding and decoding are widely used in the GE network, are the technology of comparative maturity, therefore, the concrete using method of 8B10B encoding and decoding repeats no more herein.
203, when downlink data is misdata, utilization is displaced line data with the frame gap that downlink data has same band, and sends the data after replacing.
In embodiments of the present invention, a frame gap is meant an IDLE code character, and it has predefined specific feature, after GE equipment receives the IDLE code character, it can be regarded as legal data.When the downlink data that receives is misdata, access node will utilize the frame gap that has a same band with downlink data to displace line data, and send the data after replacing.For example: if access node receives the misdata of 100 bytes, then will replace misdata, and send the frame gap of 100 bytes of this replacement again with the frame gap of 100 bytes.And, can't the equipment that receive this frame gap be impacted because frame gap does not comprise any information.
Optionally, the embodiment of the invention also can may further comprise the steps:
204, when downlink data is not misdata, then send downlink data.
In embodiments of the present invention, access node is judged when downlink data is not misdata, will continue to send downlink data.
In embodiments of the present invention, when downlink data is misdata, access node utilization and downlink data have the frame gap of same band and displace line data, make misdata can not continue to transfer to opposite end GE equipment, avoided the initiation of auto-negotiation process, therefore opposite end GE equipment will can not stop to transmit the IEEE1588 protocol data, effectively guarantee the synchronized relation between transmission network and the GE equipment, improve the reliability and the flexibility of system.
Method to access node processing downlink data embodiment illustrated in fig. 2 is introduced, need to prove, the GE network is being carried out in the initialization procedure, access node can also be by handling upstream data, the auto-negotiation data that make GE equipment send do not need to be transferred to opposite equip., and, therefore do not need opposite equip. just can finish the auto-negotiation process by access node response auto-negotiation process, can set up the clock synchronization relation flexibly and effectively.See also Fig. 3, the embodiment for the method for a kind of data processing in the embodiment of the invention comprises:
301, receive upstream data;
Access node receives upstream data, and wherein, upstream data is sent by GE equipment.
302, judge whether upstream data is the auto-negotiation data, if then execution in step 303;
Access node receives after the upstream data, judges whether upstream data is the auto-negotiation data.
303, when upstream data is the auto-negotiation data, use the frame gap that has a same band with upstream data to replace upstream data, send data after replacing, and response upstream data.
When upstream data was the auto-negotiation data, access node used the frame gap that has a same band with upstream data to replace upstream data, sent data after replacing, and response upstream data.
Though in embodiments of the present invention, the auto-negotiation data are access in node and replace with frame gap, but and do not mean that send described upstream data GE equipment just with network in the GE equipment of other ends be isolated, at first, the access node of local terminal can respond the GE equipment that sends described upstream data after receiving upstream data, thereby finish access node and GE equipment room " shaking hands ", in this case, in other alternate embodiments, access node can be born the responsibility of auto-negotiation, come to hold consultation by other layers with the access node of other ends of network, transmit with the data between guaranteeing to hold and hold, and this part content does not belong to the category that the present invention will disclose, and here repeats no more.
In embodiments of the present invention, when the upstream data that receives when access node is the auto-negotiation data, to utilize frame gap to replace this auto-negotiation data, and respond this auto-negotiation process, make and do not need the response of opposite equip., GE equipment just can be set up synchronized relation with transmission network, has improved the reliability and the flexibility of network.
For better understanding technology, see also Fig. 4, the embodiment for the method for a kind of data processing in the embodiment of the invention comprises:
401, receive upstream data;
Access node receives upstream data.
402, decoding upstream data;
Access node receives after the upstream data, the upstream data that decoding receives.In embodiments of the present invention, the general 8B10B encoding and decoding of using, the 8B10B encoding and decoding have been than mature technique, repeat no more herein.
403, judge whether decoded upstream data meets the sign indicating number type of auto-negotiation data, if then execution in step 404, if not, then execution in step 405;
In embodiments of the present invention, it is the data with special sign indicating number type that the auto-negotiation data utilize the 8B10B encoding and decoding to decode afterwards, and access node can judge whether decoded upstream data meets the sign indicating number type of auto-negotiation data.
404, use the frame gap that has a same band with upstream data to replace upstream data, send data after replacing, and response upstream data;
When decoded upstream data meets the sign indicating number type of auto-negotiation data, use the frame gap that has a same band with upstream data to replace upstream data, send data after replacing, and response upstream data.
Wherein, the response upstream data is meant that access node sends response data to the GE equipment that sends the auto-negotiation data, response auto-negotiation process.
405, send upstream data.
When decoded upstream data does not meet the sign indicating number type of auto-negotiation data, access node will continue to send this upstream data.
In embodiments of the present invention, access node is replaced the back with up auto-negotiation data with frame gap and is sent, and response auto-negotiation process, make in the auto-negotiation process, finish the auto-negotiation process between GE equipment energy and the access node, do not need the two ends of transmission network all to have GE equipment can finish the foundation of auto-negotiation process and synchronized relation yet, improved the reliability and the flexibility of system.
See also Fig. 5, the embodiment for the access node in the embodiment of the invention comprises:
Data sink 501 is used for downlink data receiving;
Replace transmitting element 503, be used for when downlink data is misdata, then use the frame gap that has a same band with downlink data to displace line data, send the data after the replacement.
Optionally, in embodiments of the present invention, access node can also comprise:
In embodiments of the present invention, data sink 501 downlink data receivings, and judge by data determining unit 502 whether downlink data is misdata, when downlink data is misdata, replace 503 of transmitting elements and displace line data, send the data after replacing with the frame gap that has a same band with downlink data.When downlink data is not misdata, then data transmitter 504 will send downlink data.
See also Fig. 6, the embodiment for embodiment of the invention access node comprises:
Judging unit 602 is used to judge whether upstream data is the auto-negotiation data;
In embodiments of the present invention, the receiver 601 of access node will receive upstream data, and judge by judging unit 602 whether this upstream data is the auto-negotiation data, when this upstream data is the auto-negotiation data, replace this upstream data with the frame gap that has a same band with this upstream data, send data after replacing, and this upstream data of response.
See also Fig. 7, the embodiment for embodiment of the invention access node comprises:
Wherein, judging unit 602 comprises:
Decoding unit 701 is used to the upstream data of decoding;
Decoding judging unit 702 is used to judge whether decoded upstream data meets the sign indicating number type of auto-negotiation data.
In addition, access node also comprises:
In embodiments of the present invention, judging unit 602 is used to judge whether upstream data is the auto-negotiation data, concrete judgment mode is: 701 pairs of decoding units receive upstream data and decode, and judge by decoding judging unit 702 whether decoded upstream data meets the sign indicating number type of auto-negotiation data again.
In embodiments of the present invention, access node sends by up auto-negotiation data are replaced the back with the frame gap with same band, and will respond the auto-negotiation process, make the auto-negotiation process not need that the auto-negotiation data are sent to opposite equip. and just can finish, improved the flexibility and the reliability of system.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
More than to a kind of method and access node that prevents that the address from clashing provided by the present invention, be 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 (10)
1. the method for a data processing is characterized in that, comprising:
Downlink data receiving;
Judge whether described downlink data is misdata;
If, then use the frame gap that has a same band with described downlink data to replace described downlink data, send the data after replacing.
2. method according to claim 1 is characterized in that, described method also comprises:
When described downlink data is not misdata, then send described downlink data.
3. the method for a data processing is characterized in that, comprising:
Receive upstream data;
Judge whether described upstream data is the auto-negotiation data;
If, then use the frame gap that has a same band with described upstream data to replace described upstream data, send data after replacing, and the described upstream data of response.
4. according to claim 2 or 3 described methods, it is characterized in that, describedly judge that whether described upstream data comprises for the auto-negotiation data:
The described upstream data of decoding;
Judge whether decoded described upstream data meets the sign indicating number type of auto-negotiation data.
5. method according to claim 3 is characterized in that, described method also comprises:
If described upstream data is not the auto-negotiation data, then send described upstream data.
6. an access node is characterized in that, comprising:
Data sink is used for downlink data receiving;
Data determining unit is used to judge whether described downlink data is misdata;
Replace transmitting element, when being used for described instantly line data and being misdata, then use the frame gap that has a same band with described downlink data to replace described downlink data, send the data after replacing.
7. access node according to claim 6 is characterized in that, described access node also comprises:
Data transmitter is used for sending described downlink data when described downlink data is not misdata.
8. an access node is characterized in that, comprising:
Receiver is used to receive upstream data;
Judging unit is used to judge whether described upstream data is the auto-negotiation data;
Processing unit is used for when described upstream data is the auto-negotiation data, then uses the frame gap that has a same band with described upstream data to replace described upstream data, sends data after replacing, and the described upstream data of response.
9. access node according to claim 8 is characterized in that, described judging unit comprises:
Decoding unit, described upstream data is used to decode;
Sign indicating number type judging unit is used to judge whether decoded described upstream data meets the sign indicating number type of auto-negotiation data.
10. according to Claim 8 or 9 described access nodes, it is characterized in that described access node also comprises:
Transmitter is used for sending described upstream data when described upstream data is not the auto-negotiation data.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/075398 WO2011147378A2 (en) | 2011-06-07 | 2011-06-07 | Data processing method and access node |
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| Publication Number | Publication Date |
|---|---|
| CN102217241A true CN102217241A (en) | 2011-10-12 |
| CN102217241B CN102217241B (en) | 2016-10-12 |
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| CN201180000812.0A Active CN102217241B (en) | 2011-06-07 | 2011-06-07 | The method of a kind of data process and access node |
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| WO (1) | WO2011147378A2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002086743A1 (en) * | 2001-04-20 | 2002-10-31 | Oracle International Corporation | Techniques for server-controlled measurement of client-side performance |
| CN1701293A (en) * | 2000-08-04 | 2005-11-23 | 电脑联合想象公司 | Systems and methods for authenticating a user to a web server |
| CN101175119A (en) * | 2007-09-30 | 2008-05-07 | 中兴通讯股份有限公司 | Abnormal voice data processing method and apparatus |
-
2011
- 2011-06-07 WO PCT/CN2011/075398 patent/WO2011147378A2/en active Application Filing
- 2011-06-07 CN CN201180000812.0A patent/CN102217241B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1701293A (en) * | 2000-08-04 | 2005-11-23 | 电脑联合想象公司 | Systems and methods for authenticating a user to a web server |
| WO2002086743A1 (en) * | 2001-04-20 | 2002-10-31 | Oracle International Corporation | Techniques for server-controlled measurement of client-side performance |
| CN101175119A (en) * | 2007-09-30 | 2008-05-07 | 中兴通讯股份有限公司 | Abnormal voice data processing method and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011147378A3 (en) | 2012-05-03 |
| WO2011147378A2 (en) | 2011-12-01 |
| CN102217241B (en) | 2016-10-12 |
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