CN1553674A - Method for wideband connection server to obtain port numbers of its uers - Google Patents
Method for wideband connection server to obtain port numbers of its uers Download PDFInfo
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- CN1553674A CN1553674A CNA03136313XA CN03136313A CN1553674A CN 1553674 A CN1553674 A CN 1553674A CN A03136313X A CNA03136313X A CN A03136313XA CN 03136313 A CN03136313 A CN 03136313A CN 1553674 A CN1553674 A CN 1553674A
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Abstract
A method by which the wideband access server can get the user's access ports numbers. In the authentication for the PPPOE, 802.1x or DHCP protocol used by IP up stream xDSL or Ethernet access users, adds an enquiry procedure between the BRAS and PDLAM or Ethernet switcher to get the physical port number that user is at. The BRAS packs up the user account, the encryption, the physical ports of Ethernet switcher that IPDSLAM is at to transmit it into the back stage server. The method directly implements the binding function between user and IPDSLAM or physical port of Ethernet switcher, real time gets the online information about user, and allows user to know the state of port before access.
Description
Technical field
The present invention relates to the method that a kind of BAS Broadband Access Server obtains broadband user's incoming end slogan, just BAS Broadband Access Server obtains the method that IPDSLAM inserts user place port location information, belongs to the broadband access communication technical field in the Internet.
Background technology
At present, BAS Broadband Access Server is to utilize VLAN ID number (VLAN ID, Virtual LANIdentification)+user account number+device id+slot number Slot solves the orientation problem of the access user in the IP port upstream digital subscriber's line access and multiplexing device (DSLAM, Digital Subscriber Line Access Multiplexer).The user is by authentication, after obtaining the IP address, BAS Broadband Access Server is to remote authentication dialing user server (RADIUS Server, when Remote Authorization Dial In UserService) sending charge information, also send device id, Slot number of BAS Broadband Access Server etc., accounting server only needs to accept the Radius attribute dictionary of producer, will finish inverse check function to IP address according to the parameters such as VLAN ID, User IP, device id and usage time interval of preserving in the accounting server.There is following problem in this method for operator in management:
1, can only provide inverse check function afterwards, can not limit in real time user behavior;
2, in present broadband access network is built, adopt usually Ethernet switch as IPDSLAM to the convergence-level between the BAS Broadband Access Server (BRAS, BRoadband Access Server).Because the overall virtual LAN VLAN quantity of convergence-level switch is limited (the maximum number of vlan order of 802.1q agreement regulation is 4096 at present), can't accomplish that each user has a VLAN ID;
3, owing to can not guarantee to each user distributes a VLAN ID, the also information of the physical interface position of consumer positioning definitely just, thus can produce owing to the problems such as fail safe that can not consumer positioning information cause wideband switch-in business.
4, configuration is complicated: in project implementing process, need do configuration for the port of each IPDSLAM, and need do corresponding VLAN ID configuration on BRAS equipment;
5, equipment cost and network construction cost are big: adopt the method for VLAN mode consumer positioning physical location, need the more VLAN ID of convergence-level switch support; In order to support more VLAN number the time, often need the notion of device id or tandem type VLAN (Stacking VLAN) is introduced into.Because these functions need obtain the chip support in the device hardware, yet existing switch is unsupported, this just needs to change existing convergence-level switch, thereby needs sizable construction fund, cost costliness.
In addition, present broadband xDSL (Digital Subscriber Line) user adopts the up problems that equally also exist of IP, returning root to trace to the source, also is because this mode can't provide user's definite circuit (physical positioning) information, and fuzzy VLAN ID can only be provided.The particular problem that exists is summarized as follows:
1, safety problem:, then can't locate and follow the tracks of it if the hacker uses the up online of IP.
2, expense dispute: user's account number is usurped by other people, or own password is revealed to other people, and can criticize the telecommunication department charge system has problem, unique people even repudiate a debt by this method.
3, the broadband user hangs dead problem: because the phenomenon of job insecurity appears in metropolitan area network, broadband access equipment DSLAM and access server BRAS sometimes, cause the user to hang extremely.Adopt the way of non-strict uniqueness for this reason, allowed the user on original physical port, to send dialing for the second time.The up user of ATM can do non-strict uniqueness restriction according to line identification, recovers to hang dead problem automatically; But the up user of IP can't accomplish non-strict uniqueness restriction, and causing hanging dead account number can't recover automatically.
4, influencing the broadband user distributes telephone numbers: owing to the account number of at present a lot of users with company, or friend's account number is shared in the own home, cause districts and cities with good conditionsi to be bundled restriction with the up way of ATM, and IP is up just powerless.
The reason that causes above-mentioned four problems is identical, all be because in the broadband access network that builds up at present, adopt Ethernet switch as IPDSLAM to the convergence-level between the BRAS, because the overall VLAN quantity of Ethernet-Aggregation switch is limited, can't accomplish to prepare a VLAN ID for each user, so the physical location information of dial user on the Ethernet can't be delivered on BRAS and the Radius Server by certain sign, like this no matter be in authentication, still in the later charging authentication information of user offline, can only see that numerous users are under same VLAN ID, perhaps can know which DSLAM the user is positioned on, can't know exactly but each user is from which adsl line.Therefore, above-mentioned safety, expense, extension after death recover and problems such as business development all can not be resolved automatically.
Summary of the invention
The purpose of this invention is to provide the method that a kind of BAS Broadband Access Server obtains broadband user's incoming end slogan, so that can fundamentally solve in broadband access network is built at present, can not determine that because adopt IPDSLAM each inserts user's the variety of issue that physical positioning produced.
The object of the present invention is achieved like this: a kind of BAS Broadband Access Server obtains the method for broadband user's incoming end slogan, is to utilize the PPPOE agreement to carry out in the login process the up xDSL user of IP, carries out the following step:
(1) the session initiation packet of link is set up in request of subscriber's main station broadcasting, waits for BAS Broadband Access Server (BRAS, BRoadband Access Server) response; During this period, the physical port correspondence table on MAC and the IPDSLAM is set up in medium access control (MAC, the medium access control) address that provides the up IPDSLAM of IP port to learn this user automatically;
(2) after one or more BRAS receive broadcasting,, just send the service data bag is provided to subscriber's main station if it can provide the user required service; Subscriber's main station then obtains the MAC Address of BRAS according to this packet;
(3) subscriber's main station is picked out a BRAS according to random algorithm or the traffic sharing algorithm set, sends the unicast session request data package to it;
(4) after selected BRAS receives the conversation request packet, produce a unique session identification number Session ID, and send the conversation request that includes this unique session identification number Session ID to this subscriber's main station and confirm packet, then, enter the PPP session stage;
(5) after subscriber's main station receives the conversation request affirmation packet of selected BRAS, carry out the PPP session according to Session ID and BRAS, and beginning sends ID authentication request packet by LCP (LCP, Link Control Protocol) to BRAS in point-to-point mode;
(6) BRAS sends the access and the authentication request packet of the physical port numbers category information comprise this subscriber's main station account number, password, place IPDSLAM to the backstage of broadband inserting service operator Verification System, and request provides access service;
(7) the backstage Verification System is returned the response data packet as a result of this access and authentication request to BRAS;
(8) BRAS transmits the response data packet as a result of this access and authentication request to subscriber's main station;
(9) if authentication is passed through, BRAS sets up PPP with subscriber's main station and is connected, and communicating pair carries out the PPP information transmission; If authentication is not passed through, then this access failure;
It is characterized in that: between step (5) and (6), also comprise the following steps:
After (5A) BRAS receives the authentication request packet, send Virtual Broadband Access Server (VBAS to IPDSLAM, Virtual Roadband Access Server) packet of request inquiry access interface information, the MAC Address of this subscriber's main station of request inquiry are the physical ports from which IPDSLAM;
After (5B) IPDSLAM receives VBAS request data query bag, send the VBAS response data packet, return the access interface information of this subscriber's main station: the corresponding relation of MAC Address and IPDSLAM physical port to BRAS;
Described step (5A) with (5B) in, it between BRAS and the IPDSLAM communication process that the Simple Network Management Protocol (SNMP, Simple Network Management Protocol) of employing standard realizes the corresponding relation of the MAC Address of inquiring user and IPDSLAM physical port.
When adopting snmp protocol, further comprise following initialization step in the described step (1): earlier each IPDSLAM is divided in the different virtual LAN VLAN, so that in the subsequent operation step, BRAS can search the MAC Address and the IP address of the management mouth at corresponding IPDSLAM place by different VLAN ID; Promptly on BRAS, want the related data of each IPDSLAM of configured in advance.
Described IPDSLAM can support the management information bank (MIB of mac address table, ManagementInformation Base) query function, the management information bank VBAS MIB of this Virtual Broadband Access Server mainly comprise the correspondence table of MAC Address and IPDSLAM physical port among the IPDSLAM.
Described step (5A) with (5B) in, be to adopt the proprietary protocol of similar address resolution protocol (ARP, Address Resolution Protocol) to carry out broadcast query user's the MAC Address and the implementation procedure of communicating by letter of the corresponding relation of IPDSLAM physical port between BRAS and the IPDSLAM.
When employing is similar to the proprietary protocol of ARP, further comprise following initialization step in the described step (1): each physical port on each IPDSLAM is performed name.
When employing is similar to the proprietary protocol of ARP, different IPDSLAM is divided into different virtual LAN VLAN, BRAS comes the IPDSLAM broadcast transmission in the VLAN of correspondence according to the different VLAN ID at authenticating user identification request data package place or directly sends the packet of the inquiry access interface information of point-to-point to the MAC Address at IPDSLAM place, so that reduce the broadcast traffic between BRAS and each IPDSLAM.
IPDSLAM in the described step (5A) when adopting the Ethernet mode to work, is then replaced it by ethernet user's access switch.
Described operating procedure (1)～(9) are the login interactive operation flow processs of the point-to-point protocol access authentication mode PPPOE on the Ethernet, it also can be the corresponding operating process that adopts 802.1X protocol access authentication mode or DHCP (DHCP+, Dynamic Host Configuration Protocol) access authentication mode.
Described xDSL user is ADSL ADSL (Asymmetric Digital Subscriber Line) user, or VDSL Very-high-speed Digital Subscriber Line user, or GSHDSL symmetry high-speed digital subscriber line user, or HDSL high-speed digital subscriber line user, or SADSL symmetry ADSL Digital Subscriber Line user, or ADSL2 ADSL (Asymmetric Digital Subscriber Line) 2 users, or ADSL+ enhancement mode ADSL (Asymmetric Digital Subscriber Line) user.
The innovative point of the inventive method is in existing access authentication procedure, increase a query script, to obtain the physical port numbers at user place, put out information such as user account number, password, place IPDSLAM physical port again in order by BRAS, and be sent in the background server, thereby can directly realize the binding function of user and IPDSLAM physical port concisely, obtain user's internet information in real time, and just can know the user port state in advance.Therefore the present invention can solve the existing variety of issues of access way such as up ADSL of present IP or Ethernet preferably, has good application prospects.
The present invention in the advantage on the Technological Economy is: only need carry out software upgrading on existing IPDSLAM and BRAS, change very few: only need that each port of IPDSLAM is done name and handle, BRAS is not needed to do complex configurations; And hardware does not need to carry out upgrading processing, and workload is few, realizes that cost is lower easily.Moreover, do not need to change existing networking mode, can make full use of and protect present existing Internet resources, make it to have continuity, these characteristics are that of the present invention applying laid a good foundation.
Description of drawings
Fig. 1 is the operating procedure schematic diagram of the present invention's login process of adopting the VBAS agreement.
Embodiment
Further specify implementation method of the present invention below in conjunction with drawings and Examples.
The basic ideas of the inventive method are: in order in time the physical port information on user account number and the IPDSLAM to be reported background server, in normal access authentication procedure (for example mode such as PPPOE or 802.1X or DHCP+), insert and once obtain inquiring about and answering of " information of request authentication main frame place physical port "; Promptly adopt inquiry mode: when BRAS receives subscriber's main station authentication request packet, initiatively initiate, inquire about the pairing physical port of this new user's MAC address to IPDSLAM by BRAS; IPDSLAM then returns the corresponding results packet to BRAS after receiving this data query bag.
Referring to Fig. 1, the present invention is the method that a kind of BAS Broadband Access Server obtains broadband user's incoming end slogan, and this method utilizes PPPOE or 802.1X or DHCP+ agreement to carry out in the login authentication operating process the up ADSL user of IP, carries out the following step:
(1) the session initiation packet of link is set up in request of subscriber's main station broadcasting, waits for the BRAS response; During this period, IPDSLAM learns this user's medium access control MAC Address automatically, sets up the physical port correspondence table on MAC and the IPDSLAM;
(2) after one or more BRAS received broadcasting, if it can provide the user required service, just sending provided the service data bag to subscriber's main station; Subscriber's main station then obtains the MAC Address of BRAS according to this packet;
(3) subscriber's main station is picked out a BRAS according to random algorithm or the traffic sharing algorithm set, sends the unicast session request data package to it;
(4) after selected BRAS receives the conversation request packet, produce a unique session identification number Session ID, and send the conversation request that includes this unique session identification number Session ID to this subscriber's main station and confirm packet, then, enter the PPP session stage;
(5) after subscriber's main station receives the conversation request affirmation packet of selected BRAS, carry out the PPP session according to Session ID and BRAS, and beginning sends ID authentication request packet by the LCP agreement to BRAS in point-to-point mode;
(6) after BRAS receives the authentication request packet, send Virtual Broadband Access Server VBAS request to IPDSLAM and inquire about the packet of access interface information, the MAC Address of this subscriber's main station of request inquiry is the physical port from which IPDSLAM; When adopting the Ethernet mode to work, wherein IPDSLAM is replaced it by ethernet user's access switch;
(7) after IPDSLAM receives VBAS request data query bag, send the VBAS response data packet, return the access interface information of this subscriber's main station: the corresponding relation of MAC Address and IPDSLAM physical port to BRAS;
(8) BRAS adopts the Radius agreement to comprise the access and the authentication request packet of the physical port numbers category information of this subscriber's main station account number, password, place IPDSLAM to the backstage of broadband inserting service operator Verification System-Radius server-transmissions, asks to provide access service;
(9) the backstage Verification System is returned the response data packet as a result of this access and authentication request to BRAS;
(10) BRAS transmits the response data packet as a result of this access and authentication request to subscriber's main station;
(11) if authentication is passed through, BRAS sets up PPP with subscriber's main station and is connected, and communicating pair carries out the PPP information transmission; If authentication is not passed through, then this access failure.
In above-mentioned flow process, step (6) is a key of the present invention with (7).In these two steps, can adopt the Simple Network Management Protocol (SNMP, Simple NetworkManagement Protocol) of standard to realize the communication process of the MAC Address port information of inquiring user between BRAS and the IPDSLAM; Also can adopt the proprietary protocol of similar address resolution protocol (ARP, Address Resolution Protocol) to carry out the communication implementation procedure of broadcast query user's MAC Address port information.Can also adopt other agreement.
When adopting snmp protocol to implement, IPDSLAM is the two-layer equipment of management, can support read (GET) of this snmp protocol to operate.Also to provide following precondition: earlier each IPDSLAM is divided in the different virtual LAN VLAN, promptly distinguish each IPDSLAM with VLAN ID, so that in the subsequent operation step, BRAS can search the MAC Address and the IP address of the management mouth at corresponding IPDSLAM place by different VLAN ID.Promptly on BRAS, want the VLAN ID data of each IPDSLAM of configured in advance.In addition, IPDSLAM need support the management information bank MIB query function of mac address table, and the management information bank VBAS MIB of this Virtual Broadband Access Server consists predominantly of the correspondence table of MAC Address and IPDSLAM physical port among the IPDSLAM.
When employing is similar to the proprietary protocol enforcement of ARP, BRAS is to all pairing physical ports of IPDSLAM environment inquiry destination-mac address with broadcast mode, if contain this MAC clauses and subclauses in the mac address table of certain IPDSLAM equipment, will reply pairing IPDSLAM device id of destination-mac address (or VLAN ID) and physical port information to BRAS.
Employing is similar to the proprietary protocol of ARP and implements to compare with preceding a kind of execution mode, its advantage is: adopt proprietary protocol to handle more flexible, BRAS need not to know information such as the management mouth IP address of IPDSLAM and VLAN ID in advance, only need on IPDSLAM, name good each physical port, need on BRAS, not carry out the configuration effort of each IPDSLAM information, so just reduce labor workload and reduce the probability that makes a mistake.Its weak point is: since the data query bag be by BRAS from top downward broadcasting, can cause the Web broadcast flow between BRAS and the IPDSLAM to increase.For this reason, can in step (1), carry out following initialization operation, carry out point-to-point communication by the MAC layer: different IPDSLAM is divided into different virtual LAN VLAN, BRAS just can come the packet of the point-to-point transmission inquiry of the IPDSLAM access interface information in the VLAN of correspondence according to the different VLAN ID at authenticating user identification request data package place, thereby reduces the broadcast traffic between BRAS and each IPDSLAM.In addition, need BRAS and DSLAM to increase the disposition of monitoring the VBAS protocol type.
In existing networking mode, IPDSLAM has dual mode to insert BAS: be with the VLAN mode and be not with the VLAN mode, to note to be supported in gigabit Ethernet (GE simultaneously when therefore disposing, Gigabyte Ethernet)/Fast Ethernet (FE, Fast Ethernet) port is down and carry out work under VLAN.The content of configuration is arranged on the function of activation VBAS under port or the VLAN, the MAC Address of the corresponding IPDSLAM of configuration under port or VLAN.In this case, VLAN and IPDSLAM are one to one, so port or MAC Address of following support configuration of VLAN.
In order to reduce the configuration effort amount, can realize finding automatically agreement between BAS and the IPDSLAM, this finds that automatically agreement is not in VBAS agreement prescribed limit.Above-mentioned operating procedure be on Ethernet according to the login interactive operation flow process of point-to-point protocol access authentication mode PPPOE, the present invention also can adopt 802.1X protocol access authentication mode or DHCP+ protocol access authentication mode to carry out corresponding operating process and realize goal of the invention.
Claims (10)
1, a kind of BAS Broadband Access Server obtains the method for broadband user's incoming end slogan, is to utilize the PPPOE agreement to carry out in the login process the up xDSL user of IP, carries out the following step:
(1) the session initiation packet of link is set up in request of subscriber's main station broadcasting, waits for BAS Broadband Access Server (BRAS, BRoadband Access Server) response; During this period, the physical port correspondence table on MAC and the IPDSLAM is set up in medium access control (MAC, the medium access control) address that provides the up IPDSLAM of IP port to learn this user automatically;
(2) after one or more BRAS receive broadcasting,, just send the service data bag is provided to subscriber's main station if it can provide the user required service; Subscriber's main station then obtains the MAC Address of BRAS according to this packet;
(3) subscriber's main station is picked out a BRAS according to random algorithm or the traffic sharing algorithm set, sends the unicast session request data package to it;
(4) after selected BRAS receives the conversation request packet, produce a unique session identification number Session ID, and send the conversation request that includes this unique session identification number Session ID to this subscriber's main station and confirm packet, then, enter the PPP session stage;
(5) after subscriber's main station receives the conversation request affirmation packet of selected BRAS, carry out the PPP session according to Session ID and BRAS, and beginning sends ID authentication request packet by LCP (LCP, Link Control Protocol) to BRAS in point-to-point mode;
(6) BRAS sends the access and the authentication request packet of the physical port numbers category information comprise this subscriber's main station account number, password, place IPDSLAM to the backstage of broadband inserting service operator Verification System, and request provides access service;
(7) the backstage Verification System is returned the response data packet as a result of this access and authentication request to BRAS;
(8) BRAS transmits the response data packet as a result of this access and authentication request to subscriber's main station;
(9) if authentication is passed through, BRAS sets up PPP with subscriber's main station and is connected, and communicating pair carries out the PPP information transmission; If authentication is not passed through, then this access failure;
It is characterized in that: between step (5) and (6), also comprise the following steps:
After (5A) BRAS receives the authentication request packet, send Virtual Broadband Access Server (VBAS to IPDSLAM, Virtual Roadband Access Server) packet of request inquiry access interface information, the MAC Address of this subscriber's main station of request inquiry are the physical ports from which IPDSLAM;
After (5B) IPDSLAM receives VBAS request data query bag, send the VBAS response data packet, return the access interface information of this subscriber's main station: the corresponding relation of MAC Address and IPDSLAM physical port to BRAS;
2, BAS Broadband Access Server according to claim 1 obtains the method for broadband user's incoming end slogan, it is characterized in that: described step (5A) with (5B) in, it between BRAS and the IPDSLAM communication process that the Simple Network Management Protocol (SNMP, Simple Network Management Protocol) of employing standard realizes the corresponding relation of the MAC Address of inquiring user and IPDSLAM physical port.
3, BAS Broadband Access Server according to claim 1 and 2 obtains the method for broadband user's incoming end slogan, it is characterized in that: when adopting snmp protocol, further comprise following initialization step in the described step (1): earlier each IPDSLAM is divided in the different virtual LAN VLAN, so that in the subsequent operation step, BRAS can search the MAC Address and the IP address of the management mouth at corresponding IPDSLAM place by different VLAN ID; Promptly on BRAS, want the related data of each IPDSLAM of configured in advance.
4, BAS Broadband Access Server according to claim 1 and 2 obtains the method for broadband user's incoming end slogan, it is characterized in that: described IPDSLAM can support the management information bank (MIB of mac address table, Management Information Base) query function, the management information bank VBAS MIB of this Virtual Broadband Access Server mainly comprise the correspondence table of MAC Address and IPDSLAM physical port among the IPDSLAM.
5, BAS Broadband Access Server according to claim 1 obtains the method for broadband user's incoming end slogan, it is characterized in that: described step (5A) with (5B) in, be to adopt the proprietary protocol of similar address resolution protocol (ARP, Address Resolution Protocol) to carry out broadcast query user's the MAC Address and the implementation procedure of communicating by letter of the corresponding relation of IPDSLAM physical port between BRAS and the IPDSLAM.
6, BAS Broadband Access Server obtains the method for broadband user's incoming end slogan according to claim 1 or 5, it is characterized in that: when employing is similar to the proprietary protocol of ARP, further comprise following initialization step in the described step (1): each physical port on each IPDSLAM is performed name.
7, BAS Broadband Access Server obtains the method for broadband user's incoming end slogan according to claim 1 or 5, it is characterized in that: when employing is similar to the proprietary protocol of ARP, different IPDSLAM is divided into different virtual LAN VLAN, BRAS comes the IPDSLAM broadcast transmission in the VLAN of correspondence according to the different VLANID at authenticating user identification request data package place or directly sends the packet of the inquiry access interface information of point-to-point to the MAC Address at IPDSLAM place, so that reduce the broadcast traffic between BRAS and each IPDSLAM.
8, obtain the method for broadband user's incoming end slogan according to claim 1 or 2 or 5 described BAS Broadband Access Servers, it is characterized in that: the IPDSLAM in the described step (5A), when adopting the Ethernet mode to work, then replace it by ethernet user's access switch.
9, BAS Broadband Access Server according to claim 1 obtains the method for broadband user's incoming end slogan, it is characterized in that: described operating procedure (1)～(9) are the login interactive operation flow processs of the point-to-point protocol access authentication mode PPPOE on the Ethernet, it also can be the corresponding operating process that adopts 802.1X protocol access authentication mode or DHCP (DHCP+, Dynamic Host Configuration Protocol) access authentication mode.
10, BAS Broadband Access Server according to claim 1 obtains the method for broadband user's incoming end slogan, it is characterized in that: described xDSL user is ADSL ADSL (Asymmetric Digital Subscriber Line) user, or VDSL Very-high-speed Digital Subscriber Line user, or GSHDSL symmetry high-speed digital subscriber line user, or HDSL high-speed digital subscriber line user, or SADSL symmetry ADSL Digital Subscriber Line user, or ADSL2 ADSL (Asymmetric Digital Subscriber Line) 2 users, or ADSL+ enhancement mode ADSL (Asymmetric Digital Subscriber Line) user.
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