CN100484074C - A method for realizing the PPPoA to PPPoE conversion in the network access equipment - Google Patents
A method for realizing the PPPoA to PPPoE conversion in the network access equipment Download PDFInfo
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- CN100484074C CN100484074C CNB2006100992712A CN200610099271A CN100484074C CN 100484074 C CN100484074 C CN 100484074C CN B2006100992712 A CNB2006100992712 A CN B2006100992712A CN 200610099271 A CN200610099271 A CN 200610099271A CN 100484074 C CN100484074 C CN 100484074C
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Abstract
The disclosed conversion method from PPPoA to PPPoE on network access equipment (NAE) comprises: 1. when NAE receives data message from PPPoA, the data transmission and process module packs the PPP message into PPPoE message for transmission; and 2. when NAE receives data from server to PPPoA user, the data transmission and process module packs the PPPP message into PPPoA message, and cuts into signal cell to transmit by the down interface. This invention reduces complexity and cost of BAS.
Description
The application divides an application with following applying for according to proposition:
The applying date: on July 25th, 2003
Application number: 03146170.0
Invention and created name: a kind of method of PPPoA that on network access equipment, realize to the PPPoE conversion
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 to the PPPoE conversion that realize on network access equipment, this method comprises:
The process that network access equipment carries out uplink data messages forwarding processing is: when described network access equipment receives from PPPoA user's data message, according to the pppoe session sign SESSION_ID that carries out PPPoE when encapsulation needs, and source MAC and target MAC (Media Access Control) address, PPP message in this data message is packaged into the PPPoE message, and it is forwarded by upstream Interface;
The process that network access equipment carries out downlink data message forwarding processing is: when described network access equipment receives from the webserver and mails to PPPoA user's data message, PPP message in this data message is packaged into the PPPoA message, again its burst is become cell, and cell is forwarded by downstream interface.
Described uplink data messages is transmitted to handle and further be may further comprise the steps:
Judge that whether described data message is from PPPoA user;
Under described data message is situation from PPPoA user, judge whether described PPPoA user's PPPoE link is set up;
When described PPPoA user's PPPoE link has been set up, judge whether the PPP message in the described data message is the LCP message; And
When described PPP message is not the LCP message, this PPP message is packaged into the PPPoE message, and it is forwarded by upstream Interface.
Described method also comprises: to not being to handle according to the agreement of deciding through consultation with the user from PPPoA user's data message.
Described method also comprises: under the still unfounded situation of described PPPoA user's PPPoE link, consult to set up a PPPoE link with the webserver and with this link and this user binding.
Described binding comprises: set up the pppoe session sign SESSION_ID of PPPoE link and the corresponding relation of PPPoA user profile, described PPPoA user profile comprises virtual path identifiers VPI/ Virtual channe identifiers VCI.
Described downlink data message is transmitted to handle and further be may further comprise the steps:
Judge whether described data message mails to PPPoA user;
At described data message is to mail under PPPoA user's the situation, judges whether the PPPoE link under the described data message is set up;
When the PPPoE link under the described data message has been set up, judge whether the PPP message in the described data message is that LCP message or PPPoE link stop message PADT; And
When described PPP message is not LCP message or PADT message, it is packaged into the PPPoA message, again its burst is become cell, and cell is forwarded by downstream interface.
Described method also comprises: to not being to mail to PPPoA user's data message to handle according to the agreement of deciding through consultation with the user.
Described method also comprises: abandon described data message under the still unfounded situation of the PPPoE link under the described data message.
Describedly when described PPP message is not LCP message or PADT message, it is packaged into the PPPoA message, again its burst is become cell, and cell is further comprised by the processing that downstream interface forwards:
When described PPP message be not LCP message or PADT message and according to described data message in loaded information when getting access to the SESSION_ID of PPPoE link, SESSION_ID according to the PPPoE link determines PPPoA user profile, according to described PPPoA user profile described PPP message is packaged into the PPPoA message, again its burst is become cell, and cell is forwarded by downstream interface.
Described method also comprises:
When network access equipment determines that PPP message in the data message of its reception stops the termination of message PADT or LCP-response message for the PPPoE link, remove network access equipment with to the corresponding PPPoE link of the corresponding PPPoA user between the webserver.
The present invention also provides a kind of network access equipment, and its structure comprises control module and data forwarding processing module, wherein:
Described control module is used to finish pppoe client feature, and sets up and safeguard that described network access equipment is to the PPPoE link between the webserver;
Described data forwarding processing module is used to finish PPPoA and the protocol adaptation between the PPPoE and the forwarding of message.
Described data forwarding processing module specifically is used for:
When described network access equipment receives from PPPoA user's data message, according to carrying out required SESSION_ID of PPPoE when encapsulation, and source MAC and target MAC (Media Access Control) address, PPP message in this data message is packaged into the PPPoE message, and it is forwarded by upstream Interface;
When described network access equipment receives from the described webserver and mails to PPPoA user's data message, the PPP message in this data message is packaged into the PPPoA message, again its burst is become cell, and cell is forwarded by downstream interface.
Described control module also is used for when the PPP message of the data message of determining its reception stops the termination of message PADT or LCP-response message for the PPPoE link, remove network access equipment with to the corresponding PPPoE link of the corresponding PPPoA user between the webserver.
Described network access equipment is a broadband access equipment, and the described webserver is a BAS Broadband Access Server.
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-response message of LCP), 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 | | User port | 2 | 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.
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 (14)
1. realize that on network access equipment asynchronous transmission mode carrying point-to-point protocol PPPoA to the method that Ethernet bearing point-to-point protocol PPPoE changes, is characterized in that this method comprises for one kind:
The process that network access equipment carries out uplink data messages forwarding processing is: when described network access equipment receives from PPPoA user's data message, according to the pppoe session sign SESSION_ID that carries out PPPoE when encapsulation needs, and source MAC and target MAC (Media Access Control) address, PPP message in this data message is packaged into the PPPoE message, and it is forwarded by upstream Interface;
The process that network access equipment carries out downlink data message forwarding processing is: when described network access equipment receives from the webserver and mails to PPPoA user's data message, PPP message in this data message is packaged into the PPPoA message, again its burst is become cell, and cell is forwarded by downstream interface.
2. method according to claim 1 is characterized in that, described uplink data messages is transmitted to handle and further be may further comprise the steps:
Judge that whether described data message is from PPPoA user;
Under described data message is situation from PPPoA user, judge whether described PPPoA user's PPPoE link is set up;
When described PPPoA user's PPPoE link has been set up, judge whether the PPP message in the described data message is the LCP message; And
When described PPP message is not the LCP message, this PPP message is packaged into the PPPoE message, and it is forwarded by upstream Interface.
3. method according to claim 2 is characterized in that, described method also comprises:
To not being to handle according to the agreement of deciding through consultation with the user from PPPoA user's data message.
4. method according to claim 2 is characterized in that, described method also comprises:
Under the still unfounded situation of described PPPoA user's PPPoE link, consult to set up a PPPoE link with the webserver and with this link and this user binding.
5. method according to claim 4 is characterized in that, described binding comprises:
Set up the pppoe session sign SESSION_ID of PPPoE link and the corresponding relation of PPPoA user profile, described PPPoA user profile comprises virtual path identifiers VPI/ Virtual channe identifiers VCI.
6. according to each described method of claim 1 to 5, it is characterized in that described downlink data message is transmitted to handle and further be may further comprise the steps:
Judge whether described data message mails to PPPoA user;
At described data message is to mail under PPPoA user's the situation, judges whether the PPPoE link under the described data message is set up;
When the PPPoE link under the described data message has been set up, judge whether the PPP message in the described data message is that LCP message or PPPoE link stop message PADT; And
When described PPP message is not LCP message or PADT message, it is packaged into the PPPoA message, again its burst is become cell, and cell is forwarded by downstream interface.
7. method according to claim 6 is characterized in that, described method also comprises:
To not being to mail to PPPoA user's data message to handle according to the agreement of deciding through consultation with the user.
8. method according to claim 6 is characterized in that, described method also comprises:
Under the still unfounded situation of the PPPoE link under the described data message, abandon described data message.
9. method according to claim 6, it is characterized in that, described when described PPP message is not LCP message or PADT message, it is packaged into the PPPoA message, again its burst is become cell, and cell is further comprised by the processing that downstream interface forwards:
When described PPP message be not LCP message or PADT message and according to described data message in loaded information when getting access to the SESSION_ID of PPPoE link, SESSION_ID according to the PPPoE link determines PPPoA user profile, according to described PPPoA user profile described PPP message is packaged into the PPPoA message, again its burst is become cell, and cell is forwarded by downstream interface.
10. according to any described method of claim 1 to 5, it is characterized in that described method also comprises:
When network access equipment determines that PPP message in the data message of its reception stops the termination of message PADT or LCP-response message for the PPPoE link, remove network access equipment with to the corresponding PPPoE link of the corresponding PPPoA user between the webserver.
11, a kind of network access equipment is characterized in that, comprises control module and data forwarding processing module, wherein:
Described control module is used to finish pppoe client feature, and sets up and safeguard that described network access equipment is to the PPPoE link between the webserver;
Described data forwarding processing module is used to finish PPPoA and the protocol adaptation between the PPPoE and the forwarding of message.
12, network access equipment according to claim 11 is characterized in that, described data forwarding processing module specifically is used for:
When described network access equipment receives from PPPoA user's data message, according to carrying out required SESSION_ID of PPPoE when encapsulation, and source MAC and target MAC (Media Access Control) address, PPP message in this data message is packaged into the PPPoE message, and it is forwarded by upstream Interface;
When described network access equipment receives from the described webserver and mails to PPPoA user's data message, the PPP message in this data message is packaged into the PPPoA message, again its burst is become cell, and cell is forwarded by downstream interface.
13. network access equipment according to claim 11, it is characterized in that, described control module also is used for when the PPP message of the data message of determining its reception stops the termination of message PADT literary composition or LCP-response message for the PPPoE link, remove network access equipment with to the corresponding PPPoE link of the corresponding PPPoA user between the webserver.
14. according to any described network access equipment of claim 11～13, it is characterized in that described network access equipment is a broadband access equipment, the described webserver is a BAS Broadband Access Server.
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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|---|---|---|---|
| CN 03146170 Division CN1272941C (en) | 2003-07-25 | 2003-07-25 | A method for implementing PPPoA to PPPoE conversion in network access equipment |
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| CN101060458A CN101060458A (en) | 2007-10-24 |
| CN100484074C true CN100484074C (en) | 2009-04-29 |
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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 |
| CN 03146170 Expired - Lifetime CN1272941C (en) | 2003-07-25 | 2003-07-25 | A method for implementing PPPoA to PPPoE conversion in network access equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20120307824A1 (en) * | 2010-06-17 | 2012-12-06 | Zte Corporation | Method and network access device for enabling data forwarding between different physical mediums |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396043C (en) * | 2006-03-17 | 2008-06-18 | 华为技术有限公司 | Connection dismantling method and access device |
| CN1822574A (en) * | 2006-03-17 | 2006-08-23 | 港湾网络有限公司 | Method for connecting broad band user |
| 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 |
| CN101257420A (en) * | 2007-03-02 | 2008-09-03 | 华为技术有限公司 | Point-to-point protocol accessing method, system as well as access node equipment |
| 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 |
| 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 |
| 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 |
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2003
- 2003-07-25 CN CNB2006100992712A patent/CN100484074C/en not_active Expired - Lifetime
- 2003-07-25 CN CN 03146170 patent/CN1272941C/en not_active Expired - Lifetime
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| 大规模多业务网络中几个关键问题的分析. 滕志猛，凌东胜，项曙明，许晓坤.中兴通讯技术，第3期. 2002 |
| 大规模多业务网络中几个关键问题的分析. 滕志猛，凌东胜，项曙明，许晓坤.中兴通讯技术，第3期. 2002 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120307824A1 (en) * | 2010-06-17 | 2012-12-06 | Zte Corporation | Method and network access device for enabling data forwarding between different physical mediums |
| EP2525531A4 (en) * | 2010-06-17 | 2015-06-24 | Zte Corp | Method and network access device for enabling data forwarding between different physical media |
| US9172554B2 (en) * | 2010-06-17 | 2015-10-27 | Zte Corporation | Method and network access device for enabling data forwarding between different physical mediums |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1571392A (en) | 2005-01-26 |
| CN1272941C (en) | 2006-08-30 |
| CN101060458A (en) | 2007-10-24 |
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