CN1571392A - A method for implementing PPPoA to PPPoE conversion in network access equipment - Google Patents
A method for implementing PPPoA to PPPoE conversion in network access equipment Download PDFInfo
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- CN1571392A CN1571392A CN 03146170 CN03146170A CN1571392A CN 1571392 A CN1571392 A CN 1571392A CN 03146170 CN03146170 CN 03146170 CN 03146170 A CN03146170 A CN 03146170A CN 1571392 A CN1571392 A CN 1571392A
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- pppoa
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Abstract
The invention discloses a method of realizing the transformation from PPPoA to PPPoE in network access facility. The method includes the following steps: when the network access facility receives the data message from the PPPoA user, data transmission processing module will packaging the data message to PPPoE message and transmit it through upward interface; when the network access facility receives the data message which is from the network server and transmitted to the PPPPoA user, the data transmission processing module will packaging the data message to PPPoA message and divide it into cell, and the cell will be transmit through downward interface. The invention can reduce the complexity of the BAS through the transformation of the PPPoA and PPPoE in broad band access facility. As well as, because Ethernet is only to be set up but not the ATM web between the broad band access facility and the BAS facility, the cost of the BAS can be reduced, and this avail to simplify network construct for operator.
Description
Invention field
The present invention relates generally to the network communications technology, the particularly a kind of method of PPPoA that on network access equipment, realize to the PPPoE conversion.
Background technology
At present, operator is when adopting broadband technology to insert the user, generally use PPPoA (PPP OverATM, ATM carries point-to-point protocol) or PPPoE (PPP Over Ethernet, the Ethernet bearing point-to-point protocol) as the two-layer protocol that inserts, so that utilize the good authentification of user of ppp protocol, management characteristic.Broadband access equipment does not change the encapsulation of message behind PPPoA that receives the user or PPPoE message, and it is passed through BAS (Broadband Access Server, BAS Broadband Access Server) device processes.Current development trend is to adopt the user of PPPoE more and more, and adopts the user of PPPoA to reduce gradually.
Broadband access equipment can be divided into control module and data forwarding processing module, wherein transmit processing module and can be divided into two parts again, that is: be used to handle from the uplink processing module of the data of subscriber's line input and be used for handling downlink processing module from the data of upstream Interface (with the interface of BAS) input.The core of control module is CPU.CPU finishes to the control of equipment and to controlling the processing of message by operational outfit software.
Present broadband access equipment only is ATM to the PPPoA message and is transmitted processing, specifically: after its uplink processing module received ATM cell from subscriber's line, it will be according to the VPI/VCI (virtual path identifiers/Virtual channe identifiers of pre-configured user PVC (permanent virtual connection) attribute to header; ) switch, the message that will switch back formation then sends to higher level equipment (BAS, or ATM switch); After the downlink processing module of broadband access equipment receives ATM cell from higher level equipment, it will switch according to the VPI/VCI of pre-configured user PVC attribute to header, and the message that will switch back formation then sends on the corresponding subscriber's line.In this process, broadband access equipment neither needs to discern the PPPoA agreement and also the payload of ATM cell is not dealt with, thereby two-layer protocol is remained unchanged.Like this, by the support to PPPoA is provided by BAS equipment, just can finish user's the authentication and the forwarding of user data package.
In order to support PPPoA, BAS equipment need provide atm interface in order to support the PPPoA agreement; In order to support PPPoE, BAS equipment need provide Ethernet interface in order to support the PPPoE agreement.Therefore, in order to support PPPoA and PPPoE simultaneously, BAS equipment just need provide atm interface and Ethernet interface simultaneously.Because kind of interface is many, thus the cost of BAS equipment and the management cost of operator can be increased greatly, and also its handling process also becomes comparatively complicated.
Summary of the invention
Therefore, the present invention proposes at the problems referred to above of the prior art, and its objective is provides PPPoA conversion to the PPPoE agreement on broadband access equipment.By such conversion, can make the interface unification of broadband access equipment and BAS equipment be Ethernet interface, and make the BAS device just handle the PPPoE agreement.
To achieve these goals, the invention provides a kind of method of PPPoA that on network access equipment, realize to the PPPoE conversion, described network access equipment comprises: control module, be used to finish pppoe client feature, and set up and safeguard that described access device is to the PPPoE link between the webserver; And data forwarding processing module, be used to finish PPPoA and the protocol adaptation between the PPPoE and the forwarding of message, this method may further comprise the steps: 1) when described network access equipment receives from PPPoA user's data message, described data forwarding processing module will be packaged into the PPPoE message to this data message, and it is forwarded by upstream Interface; 2) when described network access equipment receives from the described webserver and mails to PPPoA user's data message, described data forwarding processing module will be packaged into the PPPoA message to this data message, its burst is become cell, and cell is forwarded by downstream interface.
The above-mentioned step 1) that is used for the forwarded upstream data message further may further comprise the steps: judge that 1-1) whether described data message is from PPPoA user; 1-2) under described data message is situation from PPPoA user, judge whether described PPPoA user's PPPoE link is set up; 1-3) when described PPPoA user's PPPoE link has been set up, judge whether described data message is LCP (LCP) message; And 1-4) when described data message is not the LCP message, it is packaged into the PPPoE message, and it is forwarded by upstream Interface.
Above-mentioned steps 1-1) further comprises the step of handling according to the agreement of deciding through consultation with the user from PPPoA user's data message not being.
Above-mentioned steps 1-2) further is included under described PPPoA user's the still unfounded situation of PPPoE link and gives the step that described control module is handled packet.In this case, control module will consult to set up a PPPoE link with the described webserver, and with this link and described PPPoA user binding.
Above-mentioned steps 1-3) further comprises and give the step that control module is handled the LCP information message.
The above-mentioned step 2 that is used for descending forwarding data message) further may further comprise the steps: judge 2-1) whether described data message mails to PPPoA user; Be to mail under PPPoA user's the situation 2-2), judge whether the PPPoE link under the described data message is set up at described data message; 2-3) when the PPPoE link under the described data message has been set up, judge whether described data message is LCP (LCP) message; And 2-4) when described data message is not the LCP message, it is packaged into the PPPoA message, its burst is become cell, and cell is forwarded by downstream interface.
Above-mentioned steps 2-1) further comprises not being to mail to the step that PPPoA user's data message is handled according to the agreement of deciding through consultation with the user.
Above-mentioned steps 2-2) further is included under the still unfounded situation of PPPoE link under the described data message and gives the step that described control module is handled packet.In this case, control module will consult to set up a PPPoE link with the described webserver, and with this link and described PPPoA user binding.
Above-mentioned steps 2-3) further comprises and give the step that control module is handled the LCP information message.
In an embodiment of the present invention, described network access equipment is preferably broadband access equipment, and the described webserver is preferably BAS Broadband Access Server (BAS).
Beneficial effect of the present invention is, by on broadband access equipment, finishing the conversion of PPPoA and PPPoE agreement, make the interface unification of broadband access equipment and BAS equipment be Ethernet interface, and the BAS device just will be handled the PPPoE agreement, thereby reduced the complexity of BAS, therefore can reduce the BAS cost.Simultaneously, do not need to build the ATM net, help operator and simplify networking, reduce networking and maintenance cost owing to only need build Ethernet between broadband access equipment and the BAS equipment.
Description of drawings
By the explanation of the embodiment of the invention being made below in conjunction with accompanying drawing, it is clearer that above-mentioned purpose of the present invention, feature and advantage will become.In following accompanying drawing:
Fig. 1 shows according to the described up handling process of carrying out PPPoA to the PPPoE conversion on broadband access equipment of the embodiment of the invention;
Fig. 2 shows according to the described downlink processing flow process of carrying out PPPoE to the PPPoA conversion on broadband access equipment of the embodiment of the invention;
Fig. 3 shows the form of PPPoE message frame;
Fig. 4 shows the form of PPPoA message frame.
Embodiment
Below will make a detailed description the specific embodiment of the present invention with the present invention's using on broadband access equipment to example.But those of ordinary skill in the art can understand that thought of the present invention is not limited in the application on broadband access equipment, but can expand on the various relevant network access equipments.
Fig. 1 shows according to the described up handling process of carrying out PPPoA to the PPPoE conversion on broadband access equipment of the embodiment of the invention.As shown in Figure 1, after the data message that receives from subscriber's line, the data forwarding processing module of broadband access equipment at first reassembles into user cell packet (step 1), judge that then whether this data message is from PPPoA user (step 2), if not, then need to handle (step 3) (this is not within discussion scope of the present invention) by the agreement of deciding through consultation with the user.Next, determining this data message is under the situation from PPPoA user, the data forwarding processing module will check further whether user's PPPoE link sets up (step 4), if link is not also set up, then packet is given the control module of broadband access equipment and handled (step 8).Here, in step 8, control module can be finished the function of PPPoE Client (pppoe client) for each PPPoA user agent, it is set up user PPPoE and connects the mode can adopt the user uplink first packet to drive, that is, and and when when a PPPoA user receives packet, also do not set up the PPPoE link if find for this user, then, set up a PPPoE link with the BAS server negotiate according to the requirement of PPPoE Client, and with this link and this user binding.In addition, the PPPoE link between broadband access equipment and the user can also adopt the mode of static configuration permanent link,, sets up nonvolatil PPPoE link between broadband access equipment and BAS that is, and with these links and user binding.In this mode, the foundation of link is by the configuration decision, and it is irrelevant with the message of receiving.
Under the situation that the PPPoE link of determining the user has been set up, the data forwarding processing module will be taken out user's PPP message from data message (step 5) judges then whether user's PPP message is LCP (LCP) message (step 6).If user's PPP message is the LCP message, then it will be given control module and be handled (step 8).In step 8, control module checks whether user's PPP message is user's LCP Terminate-ACK message (termination of LCP-permission message), if then remove corresponding user PPPoE link (removing link again after also can waiting message to forward) from upstream Interface.In this case, control module can adopt following 2 kinds to tear the chain mode open: after a) receiving the PADT message of BAS server, remove the user PPPoE link of appointment in the PADT message; B) receive BAS server or user's LCP Terminate-ACK message after, remove corresponding user PPPoE link.Through after the above-mentioned processing, control module is handled and by the data forwarding processing module this message is packaged into PPPoE message (step 7).When user's PPP message was not the LCP message, the data forwarding processing module will directly be packaged into PPPoE message (step 7) to user's PPP message.
In above-mentioned steps 7, the specific practice that user's PPP message is packaged into the PPPoE message is: the various information of a) determining to carry out the required user of PPPOE encapsulation by above-mentioned steps 4 or step 8.For example, can in following table 1, find out required user profile according to user port and user's VPI/VCI.
Table 1: user message table
| The | ?SESSION_ID1 | ????SMAC1 | | ??VPI/VCI1 |
| The | ?SESSION_ID2 | ????SMAC2 | | ??VPI/VCI2 |
| ????…… | ?…… | ????…… | …… | ??…… |
| User n | ?SESSION_IDn | ????SMACn | User port n | ??VPI/VCIn |
This user message table is to be safeguarded according to the binding relationship of user and PPPoE link by control module, comprising carrying out required SESSION_ID of PPPoE when encapsulation, and SMAC (source MAC); B) required DMAC (target MAC (Media Access Control) address) is set at the address of BAS server in the time of will carrying out the PPPoE encapsulation; And c) utilize foregoing these information (comprising DMAC, SMAC and SESSION_ID) that the PPP message is packaged into the PPPoE message.Fig. 3 shows the form through the PPPoE message frame after the encapsulation, because its particular content all is known, so omit explanation.
At last, the PPPoE message after the encapsulation of data forwarding processing module forwards (step 9) by the upstream Interface of broadband access equipment.
Fig. 2 shows according to the described downlink processing flow process of carrying out PPPoE to the PPPoA conversion on broadband access equipment of the embodiment of the invention.As shown in Figure 2, after the data message of receiving from BAS, the data forwarding processing module of broadband access equipment judges at first whether this message mails to PPPoA user's (step 1 '), if not, then need by with the user decide through consultation agreement is handled (step 3 ') (this is not within discussion scope of the present invention).Next, be to mail under PPPoA user's the situation at definite this data message, the data forwarding processing module will judge further whether this data message is PPPoE message (step 2 '), if not, then this data message will be dropped (step 5 ').If, then the data forwarding processing module will judge under this data message whether the PPPoE link sets up (step 4 '), if do not have, then abandon this message (step 5 '); If the PPPoE link under this data message is set up, then the data forwarding processing module will be taken out user's PPP message (step 6 ') from this data message, and judge whether user's PPP message is LCP message (step 7 ').If user's PPP message is the LCP message, then the data forwarding processing module can be given control module with it and be handled (step 9 ').Step 9 ' in, control module checks whether user's PPP message is the LCP Terminate-ACK message of BAS, if then remove corresponding user PPPoE link.After handling, control module by the data forwarding processing module this message is packaged into the PPPoA message again and burst becomes cell (step 8 ').When user's PPP message was not the LCP message, the data forwarding processing module will directly be packaged into the PPPoA message to user's PPP message, and the PPPoA message fragment after will encapsulating becomes cell (step 8 ').
Above-mentioned steps 8 ' in, user's PPP message is packaged into the PPPoA message and will encapsulate after the PPPoA message fragment become the specific practice of cell to be: a) by above-mentioned steps 4 ' determine required user's various information.For example, can in above-mentioned table 1, find out the VPI/VCI that comprises user port and user according to user's SESSION_ID; B) the PPP message is packaged into the PPPoA message.Fig. 4 shows the form through the PPPoA message frame after the encapsulation, because its particular content all is known, so omit explanation; And c) the PPPoA message being become ATM cell by AAL5 fit standard burst, also is prior art owing to divide chip technology, so repeat no more.
At last, the data forwarding processing module sends (step 10 ') with the subscriber line ports of cell by broadband access equipment.
More than to realizing that on network access equipment PPPoA has been described in detail to the method that PPPoE changes.Certainly, realize that on network access equipment PPPoE also is fine to the conversion of PPPoA.But, realizing PPPoE under the situation of PPPoA conversion, network access equipment only needs the PPPoE message is carried out burst/reorganization, and does not need encapsulation to be made amendment to the PPPoE conversion as PPPoA.In addition, present PPPoE very extensive to the conversion use of PPPoA, and nearly all broadband network access device is all supported.Therefore, as prior art, PPPoE is not given unnecessary details to the conversion method of PPPoA herein.
Though the above description of this invention carries out with reference to its embodiment,, these descriptions should not be considered to limitation of the present invention.Any modification and conversion that does not deviate from spirit and scope of the invention all belongs to by within the defined scope of the present invention of accessory claim.
Claims (12)
1. method that on network access equipment, realizes PPPoA to the PPPoE conversion, described network access equipment comprises: control module, be used to finish pppoe client feature, and foundation and safeguard that described access device is to the PPPoE link between the webserver; And the data forwarding processing module, being used to finish PPPoA and the protocol adaptation between the PPPoE and the forwarding of message, this method may further comprise the steps:
1) when described network access equipment receives from PPPoA user's data message, described data forwarding processing module will be packaged into the PPPoE message to this data message, and it is forwarded by upstream Interface; And
2) when described network access equipment receives from the described webserver and mails to PPPoA user's data message, described data forwarding processing module will be packaged into the PPPoA message to this data message, its burst is become cell, and cell is forwarded by downstream interface.
2. method according to claim 1 is characterized in that, the described step 1) that is used for the forwarded upstream data message further may further comprise the steps:
1-1) judge that whether described data message is from PPPoA user;
1-2) under described data message is situation from PPPoA user, judge whether described PPPoA user's PPPoE link is set up;
1-3) when described PPPoA user's PPPoE link has been set up, judge whether described data message is the LCP message; And
1-4) when described data message is not the LCP message, it is packaged into the PPPoE message, and it is forwarded by upstream Interface.
3. method according to claim 2 is characterized in that, described step 1-1) further comprise the step of handling according to the agreement of deciding through consultation with the user from PPPoA user's data message not being.
4. method according to claim 2 is characterized in that, described step 1-2) further be included in and give described control module with packet under described PPPoA user's the still unfounded situation of PPPoE link and handle to set up the step of described link.
5. method according to claim 4 is characterized in that further comprising that the control module and the described webserver consult to set up a PPPoE link and with the step of this link and described PPPoA user binding.
6. method according to claim 2 is characterized in that, described step 1-3) further comprise and give the step that control module is handled the LCP message.
7. method according to claim 1 is characterized in that, the described step 2 that is used for descending forwarding data message) further may further comprise the steps:
2-1) judge whether described data message mails to PPPoA user;
Be to mail under PPPoA user's the situation 2-2), judge whether the PPPoE link under the described data message is set up at described data message;
2-3) when the PPPoE link under the described data message has been set up, judge whether described data message is the LCP message; And
2-4) when described data message is not the LCP message, it is packaged into the PPPoA message, its burst is become cell, and cell is forwarded by downstream interface.
8. method according to claim 7 is characterized in that, described step 2-1) further comprise not being to mail to the step that PPPoA user's data message is handled according to the agreement of deciding through consultation with the user.
9. method according to claim 7 is characterized in that, described step 2-2) further be included under the affiliated still unfounded situation of PPPoE link of described data message and give the step that described control module is handled packet.
10. method according to claim 9 is characterized in that further comprising that the described control module and the described webserver consult to set up a PPPoE link and with the step of this link and described PPPoA user binding.
11. method according to claim 7 is characterized in that described step 2-3) further comprise and give the step that control module is handled the LCP information message.
12. the described method of any one claim according in the claim 1 to 11 is characterized in that described network access equipment is a broadband access equipment, the described webserver is a BAS Broadband Access Server.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100992712A CN100484074C (en) | 2003-07-25 | 2003-07-25 | A method for realizing the PPPoA to PPPoE conversion in the network access equipment |
| CN 03146170 CN1272941C (en) | 2003-07-25 | 2003-07-25 | A method for implementing PPPoA to PPPoE conversion in network access equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03146170 CN1272941C (en) | 2003-07-25 | 2003-07-25 | A method for implementing PPPoA to PPPoE conversion in network access equipment |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100992712A Division CN100484074C (en) | 2003-07-25 | 2003-07-25 | A method for realizing the PPPoA to PPPoE conversion in the network access equipment |
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| Publication Number | Publication Date |
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| CN1571392A true CN1571392A (en) | 2005-01-26 |
| CN1272941C CN1272941C (en) | 2006-08-30 |
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| CN 03146170 Expired - Lifetime CN1272941C (en) | 2003-07-25 | 2003-07-25 | A method for implementing PPPoA to PPPoE conversion in network access equipment |
| CNB2006100992712A Expired - Lifetime CN100484074C (en) | 2003-07-25 | 2003-07-25 | A method for realizing the PPPoA to PPPoE conversion in the network access equipment |
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| CNB2006100992712A Expired - Lifetime CN100484074C (en) | 2003-07-25 | 2003-07-25 | A method for realizing the PPPoA to PPPoE conversion in the network access equipment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007107076A1 (en) * | 2006-03-17 | 2007-09-27 | Huawei Technologies Co., Ltd. | A broadband user access method and device |
| CN100396043C (en) * | 2006-03-17 | 2008-06-18 | 华为技术有限公司 | Connection dismantling method and access device |
| WO2008106881A1 (en) * | 2007-03-02 | 2008-09-12 | Huawei Technologies Co., Ltd. | A ppp access method, corresponding system and access node device |
| CN101499958B (en) * | 2008-02-01 | 2011-12-07 | 华为技术有限公司 | Method, system and routing device for implementing sub-interface by high-speed physical interface |
| CN101064733B (en) * | 2006-04-26 | 2012-05-30 | 上海贝尔阿尔卡特股份有限公司 | Method and apparatus for controlling user equipment access based on data packet package types |
| CN101783976B (en) * | 2009-01-16 | 2013-12-04 | 华为技术有限公司 | Interface and method for supporting UTOPIA and POS-PHY |
| CN104539580A (en) * | 2014-12-02 | 2015-04-22 | 重庆旭贤科技发展有限公司 | Point-to-point protocol over Ethernet (PPPoE) shunt gateway based routing control method autonomously selected by user |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909074A (en) * | 2010-06-17 | 2010-12-08 | 中兴通讯股份有限公司 | Network access equipment and method for implementing data forwarding between different physical media |
| CN112751735B (en) * | 2021-01-04 | 2022-03-25 | 烽火通信科技股份有限公司 | Method and device for realizing PPPoA function in broadband access equipment |
-
2003
- 2003-07-25 CN CN 03146170 patent/CN1272941C/en not_active Expired - Lifetime
- 2003-07-25 CN CNB2006100992712A patent/CN100484074C/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007107076A1 (en) * | 2006-03-17 | 2007-09-27 | Huawei Technologies Co., Ltd. | A broadband user access method and device |
| CN100396043C (en) * | 2006-03-17 | 2008-06-18 | 华为技术有限公司 | Connection dismantling method and access device |
| CN101064733B (en) * | 2006-04-26 | 2012-05-30 | 上海贝尔阿尔卡特股份有限公司 | Method and apparatus for controlling user equipment access based on data packet package types |
| WO2008106881A1 (en) * | 2007-03-02 | 2008-09-12 | Huawei Technologies Co., Ltd. | A ppp access method, corresponding system and access node device |
| CN101499958B (en) * | 2008-02-01 | 2011-12-07 | 华为技术有限公司 | Method, system and routing device for implementing sub-interface by high-speed physical interface |
| CN101783976B (en) * | 2009-01-16 | 2013-12-04 | 华为技术有限公司 | Interface and method for supporting UTOPIA and POS-PHY |
| CN104539580A (en) * | 2014-12-02 | 2015-04-22 | 重庆旭贤科技发展有限公司 | Point-to-point protocol over Ethernet (PPPoE) shunt gateway based routing control method autonomously selected by user |
| CN104539580B (en) * | 2014-12-02 | 2017-10-31 | 重庆旭贤科技发展有限公司 | The route control method independently selected based on the PPPoE users for shunting gateway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101060458A (en) | 2007-10-24 |
| CN1272941C (en) | 2006-08-30 |
| CN100484074C (en) | 2009-04-29 |
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