CN101674669B - Method, service node equipment and access node equipment for keep-alive processing - Google Patents
Method, service node equipment and access node equipment for keep-alive processing Download PDFInfo
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- CN101674669B CN101674669B CN200910110755.6A CN200910110755A CN101674669B CN 101674669 B CN101674669 B CN 101674669B CN 200910110755 A CN200910110755 A CN 200910110755A CN 101674669 B CN101674669 B CN 101674669B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/25—Maintenance of established connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/535—Tracking the activity of the user
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Abstract
The invention discloses a method, service node equipment and access node equipment for keep-alive processing, wherein the method comprises the following steps: when a user is accessed to the service node equipment through the access node equipment, the service node equipment interacts with the access node equipment and sends user key information of changes of online status to the access node equipment; the service node equipment receives the information of offline users, which is fed back by the access node equipment through checking a media access control address table; and according to the information of the offline users, the service node equipment conducts keep-alive processing on the users hang up under the access node equipment. Pressure of users detected by SN is dispersed to different ANs, thus reducing the pressure of keep-alive processing of the SN to the users, avoiding possible abnormal problems caused by that the SN is too busy due to large keep-alive processing amount in SN, and guaranteeing the stability of network.
Description
Technical field
The present invention relates to access technology, particularly for method, service node device and the access node apparatus of keep-alive processing.
Background technology
Refer to Fig. 1, the basic networking of existing broadband access network comprises: subscriber's main station is by access node (Access Node, AN) equipment access service node (Service Node, SN) equipment, obtains the subscriber policy of address and operator's distribution at SN equipment.When user reaches the standard grade, SN equipment can be set up relevant user conversation table, and by different modes, user is carried out to keep-alive, but takies the user of apparatus system resource so that timely suppressing exception rolls off the production line.
The user type of current SN access is mainly divided into DHCP (Dynamic HostConfiguration Protocol, DHCP) (the Point-to-Point Protocol Over Ethernet of the point-to-point protocol on user and Ethernet, PPPOE) user, PPPOE user includes but not limited to Level 2 Tunnel Protocol (Layer Two Tunneling Protocol, L2TP) user.Generally adopt address resolution protocol (Address Resolution Protocol for DHCP user; ARP) or the mode in short rental period of DHCP survey keep-alive, adopt keep-alive (Keepalive) message of PPPOE to carry out keep-alive for PPPOE user.
At SN equipment, the user of SN access to be concentrated and carries out keep-alive for the means that realize of user's keep-alive at present.SN specifies user's keep-alive detection times and interval, and whether SN can be active according to setting regular active probe user, when certain detection times and in the time user without corresponding, think that user is inactive, now can force users roll off the production line to save device resource.
Adopt traditional keep-alive mode to have following problem:
1, along with the ability of SN access user strengthens, the number of users that can access under the AN of SN access is more and more, and the now keep-alive of a large number of users, can be very large to the pressure of SN equipment.
2, the keep-alive of SN equipment to user, no matter whether user is active, all needs to process user's keep-alive message, need to take so a lot of unnecessary system resource.
3, in the time of user's keep-alive failure, SN cannot judge it is link between SN and AN, or link failure between AN and user, cannot make correct troubleshooting.
4, SN passes through access line road to user's keep-alive, occupied bandwidth, and the ARP mode of DHCP, owing to being broadcast mode, exists safety problem simultaneously, is also easily tackled by user's fire compartment wall.
5, SN equipment adopts different keep-alive modes to PPPOE and DHCP user, has increased the complexity of SN device processes.
Summary of the invention
The object of the present invention is to provide method, service node device and access node apparatus for keep-alive processing, reduce the keep-alive pressure of SN.
The invention provides a kind of method for keep-alive processing, the method comprises:
When user is by after access node apparatus access service node device, described service node device and described access node apparatus are mutual, and user's key message that presence is changed sends to described access node apparatus;
Described service node device receives described access node apparatus by the user profile of the off-line of inspection address table of media access control feedback;
According to the user profile of described off-line, described service node device carries out keep-alive processing to the user who hangs under described access node apparatus.
Further, the present invention is also provided for the method for keep-alive processing, and the method comprises:
When user is by after access node apparatus access service node device, described access node apparatus receives the user's key message changing from the presence of service node;
Described access node apparatus is by checking address table of media access control; to the user profile of described service node device feedback off-line, the user profile of described off-line is for carrying out keep-alive processing for described service node device to the user who hangs under described access node apparatus.
Further, the present invention also provides service node device, and this equipment comprises:
Transmitting element, after accessing by access node apparatus as user, mutual with described access node apparatus, user's key message that presence is changed sends to described access node apparatus;
Receiving element, for receiving described access node apparatus by the user profile of the off-line of inspection address table of media access control feedback;
Keep-alive unit, for according to the user profile of described off-line, carries out keep-alive processing to the user who hangs under described access node apparatus.
Further, the present invention also provides access node apparatus, and this equipment comprises:
Receiving element, for when user is by after access node apparatus access service node device, receives the user's key message changing from the presence of service node;
Detecting unit, for checking address table of media access control;
Feedback unit, for the user profile to described service node device feedback off-line, the user profile of described off-line is for carrying out keep-alive processing for described service node device to the user who hangs under described access node apparatus.
Adopt the method for keep-alive processing provided by the invention, service node device and access node apparatus; the pressure of SN detecting user is distributed to different AN; reduce the processing pressure of SN to user's keep-alive; avoid a large amount of keep-alives to process and cause SN processing too busy at SN; the abnormal problem that may cause, has ensured the stability of network.
Brief description of the drawings
Fig. 1 illustrates network topology schematic diagram of the prior art;
Fig. 2 illustrates the schematic flow sheet of the present invention for the method for keep-alive processing;
Fig. 3 illustrates the structural representation of service node device of the present invention;
Fig. 4 illustrates the structural representation of access node apparatus of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Traditional user's keep-alive mode is that SN processes user's keep-alive of hanging under whole AN, and different user adopts different keep-alive modes, the today significantly promoting in SN access user quantity, apparent larger to the pressure ratio of SN.The invention provides on SN equipment and adopt same keep-alive mode distributed keeping alive method for different PPP and DHCP user; by the keep-alive pressure of originally concentrating the mode of keep-alive to be distributed to AN to carry out reducing SN at SN equipment, SN only needs can judge whether off-line of user with AN interactive user key message.Wherein, media interviews control (MediaAccess Control, the MAC) address that user's key message is user.Wherein, keep-alive processing comprises and while not processing with user's off-line when user is online, carries out processed offline (deletion).
Fig. 2 illustrates the schematic flow sheet of the present invention for the method for keep-alive processing.Refer to Fig. 2, the method comprises:
201, the user who hangs under AN accesses SN.
202, SN judges which user which AN has, and regularly the key message of hanging user under this AN, by protocol apprizes AN that can be mutual with AN, wherein, user's key message can be MAC Address; Interaction protocol includes but not limited to two-way converting mechanism (Bidirectional ForwardingDetection, BFD) agreement, expansion BFD agreement, access node control (Access Node ControlProtocol, ANCP) agreement and/or Virtual Broadband Access Server (Virtual Broadband AccessServer, VBAS) agreement etc.
Wherein, SN and by and AN between the interaction protocol MAC information of informing the user that AN need to check, this informing mode can be that a kind of increment is informed, informs at set intervals AN, has been increased which user or has been rolled off the production line reduced which user by the user of this AN access SN.If user offline, SN tells AN that this user is without detection, and AN stops this scanning input.Certainly, also can adopt the mode of SN Real-time Notification AN while rolling off the production line on unique user
202, SN judges whether AN has response, if had, proceeds to step 204; If, do not proceed to step 207.
204, AN is according to the user MAC that receives, scans in the MAC table of this AN whether comprise this MAC, represents in this user's a period of time without any data message forwarding this user's off-line (inactive) if do not comprised.AN is by informing SN with the mutual agreement of SN by this inactive user's MAC.
205, SN receives that after the certain number of times of the sluggish information of certain MAC that AN informs, SN judges that this MAC user is inactive, and SN carries out not keep-alive processing to this user, deletes this user/carry out processed offline.
206, SN tells AN that this inactive user is without detection, and AN stops this user to detect.
If the request AN response timeout that 207 SN initiate, SN judge whether AN can reach and AN under whether hang customer flow normal, thereby judge whether link failure between AN fault or AN and SN.
In the time that between AN and SN, mutual message is without response, SN whether can reach by this AN and this AN under all users whether have flow to judge be the interaction protocol stack fault of AN, in the time that AN can reach and access the interface flow of hanging user under AN and is greater than a certain threshold values, judgement is the interaction protocol stack fault of AN.
Be greater than threshold value if 208 AN can reach and access the flow of AN, think not off-line (active) of user under AN; Otherwise, think that all users are inactive under AN, force all user offlines under access node apparatus.
SN can adopt outside band to user and be with interior two kinds of mode keep-alives, and in band, keep-alive refers to and takies the keep-alive of subscriber line circuit bandwidth, and wherein, subscriber line circuit is the access user sub-interface that refers to an access AN; Be with outer keep-alive to refer to and do not take subscriber line circuit keep-alive, as long as AN and SN can reach, wherein, being with outer keep-alive is that between SN and AN, employing and user access different circuit keep-alives.
Adopt technical scheme of the present invention; a large amount of detecting user pressure of SN are distributed to different AN; SN is as long as process the abnormal inactive user that AN reports; without to all normal and abnormal user all keep-alive count; effectively reduce the processing pressure of SN; avoid a large amount of keep-alives to process and cause SN processing too busy at SN, the abnormal problem that may cause, the normal operation of maintaining network.
Further; unify the session keepalive of different user mode accesses (DHCP, PPPOE, L2TP); no matter be that the user of which kind of type is as long as the active existence that has flow MAC table on AN to have this user MAC makes SN to adopt different keepalive methods according to different users again.
Further; because whole keep-alive processing procedure is only mutual between SN and AN; therefore keep-alive message only carries out between AN and SN, can not go downwards to subscriber's main station, thereby avoid keep-alive message downlink to produce to subscriber's main station the safety problem that LAN subscriber is intercepted.
Further, can effectively judge that the reason that network failure produces is at user network or carrier network.User network often under AN, on be carrier network.In the time that AN judges that user is unreachable, fault goes out at user network, and when AN is without when response, fault may go out at carrier network.
Lift the concrete application of several the present invention for the method for keep-alive processing below.
Application one, DHCP user reach the standard grade and obtain address, and certification is passed through, and now user gateway (RG) abnormal power-down causes user inactive.
Steps A 1, DHCP user reach the standard grade.
Step B1, SN pass through the interaction protocol between AN, tell AN equipment by hang all user MAC under this AN reaching the standard grade on SN.
Step C1, RG abnormal power-down, cause this user's reality inactive.
Step D1, AN check the MAC table of oneself, find that this user MAC does not exist in the MAC table of oneself, and AN informs that this MAC of SN is inactive.
Step e 1, AN check the MAC table of oneself, find that this user MAC does not exist in the MAC table of oneself, and AN informs that this MAC of SN is inactive.The MAC table that checks at set intervals oneself as AN all finds that this user MAC does not exist and inform SN, reaches after certain inspection number of times, and SN thinks that this user is inactive, forces this user offline, deletes this user's subscriber's meter.
Step F 1, SN by and AN between interaction protocol inform that this user of AN is without detection, AN stops checking that whether this user MAC active.
Application two, PPPOE and L2TP user reach the standard grade and obtain address, and user is in authentication state, and now user RG abnormal power-down causes user inactive.
Steps A 1, PPPOE and L2TP user PPPOE dialing are reached the standard grade.
Step B1, SN pass through the interaction protocol between AN, tell AN equipment by hang all user MAC under this AN reaching the standard grade on SN.
Step C1, RG abnormal power-down, cause this user's reality inactive.
Step D1, AN check the MAC table of oneself, find that this user MAC does not exist in the MAC table of oneself, and AN informs that this MAC of SN is inactive.
Step e 1, AN check the MAC table of oneself, find that this user MAC does not exist in the MAC table of oneself, and AN informs that this MAC of SN is inactive.The MAC table that checks at set intervals oneself as AN all finds that this user MAC does not exist and inform SN, reaches after certain inspection number of times, and SN thinks that this user is inactive, forces this user offline, deletes this user's subscriber's meter.
Step F 1, SN by and AN between interaction protocol inform that this user of AN is without detection, AN stops checking that whether this user MAC active.
Application three, PPPOE user reaches the standard grade and obtains address, and user is in authentication state, and now AN hangs, and causes connecing under this AN all users inactive.
Steps A 1, user PPPOE dialing are reached the standard grade.
Step B1, SN pass through the interaction protocol (such as ANCP, BFD, VBAS etc.) between AN, tell AN equipment by hang all user MAC under this AN reaching the standard grade on SN.
Step C1, AN fault hang up, and cause mutual message AN that SN sends to AN without response.
AN is still without response several times alternately for the continuous and AN of step D1, SN, and SN surveys AN, and whether network can reach, and SN finds that AN network is unreachable, and SN thinks that all users are inactive under AN, forces all user offlines under this fault AN.
Application four, PPPOE user reaches the standard grade and obtains address, and user is in authentication state, now AN and SN interaction protocol stack hang (AN normal but and SN cannot such as ANCP of interaction protocol), cause this SN and the AN cannot be mutual.
Steps A 1, user PPPOE dialing are reached the standard grade.
Step B1, SN pass through the interaction protocol (such as ANCP, BFD, VBAS etc.) between AN, tell AN equipment by hang all user MAC under this AN reaching the standard grade on SN.
Step C1, AN and SN interaction protocol stack are hung, and cause mutual message AN that SN sends to AN without response.
Continuous and the AN of step D1, SN alternately several times AN still without response, SN surveys AN, and whether network can reach, and SN finds that AN network can reach, and SN checks the port flow of access AN, SN finds that the flow of access AN port is greater than a certain normal threshold values, and SN thinks that user is active under this AN.
Fig. 3 illustrates the structural representation of service node device of the present invention.Refer to Fig. 3, this equipment comprises:
Transmitting element 301, after accessing by access node apparatus as user, mutual with access node apparatus, user's key message that presence is changed sends to access node apparatus;
Receiving element 302, for receiving access node apparatus by the user profile of the off-line of inspection address table of media access control feedback;
Keep-alive unit 303, for according to the user profile of off-line, carries out keep-alive processing to the user who hangs under access node apparatus.
Further, keep-alive unit can comprise:
Judgment sub-unit, for judging whether offline user reaches pre-determined number;
Control subelement, for the offline user for reaching pre-determined number, force it to roll off the production line.
Or further, keep-alive unit can comprise:
Survey subelement, for the interaction times predetermined, do not receive the feedback of access node apparatus, survey access node apparatus and whether can reach;
Control subelement, if be greater than threshold value for the flow that can reach and access access node apparatus, think that user enlivens under access node apparatus; Otherwise, think that all users are inactive under access node apparatus, force all user offlines under access node apparatus.
Fig. 4 illustrates the structural representation of access node apparatus of the present invention.Refer to Fig. 4, this equipment comprises:
Receiving element 401, for when user is by after access node apparatus access service node device, receives the user's key message changing from the presence of service node;
Detecting unit 402, for checking address table of media access control;
Feedback unit 403, for the user profile to service node device feedback off-line, the user profile of off-line is for carrying out keep-alive processing for service node device to the user who hangs under access node apparatus.
The above is only the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1. for a method for keep-alive processing, it is characterized in that, the method comprises:
When user is by after access node apparatus access service node device, described service node device and described access node apparatus are mutual, and the user's of needs inspection key message is sent to described access node apparatus;
Described access node apparatus receives the described key message that needs the user who checks, draw the user profile of off-line by scanning the mode of the key message that whether comprises the user that described needs check in self address table of media access control, and described offline user information is fed back to described service node device, user is as long as active have flow media interviews address table on described access node apparatus to have the existence of this user media accessing to control address;
According to the user profile of described off-line, described service node device carries out keep-alive processing to the user who hangs under described access node apparatus.
2. method according to claim 1, is characterized in that, the described key message by the user of needs inspection sends to described access node apparatus to comprise:
Described service node device regularly sends to described access node apparatus by user's key message of newly being reached the standard grade or newly being rolled off the production line by described access node apparatus;
Or, in the time reaching the standard grade or roll off the production line user by described access node apparatus, described service node device in real time by user's key message of rolling off the production line send to described access node apparatus.
3. method according to claim 1, is characterized in that, described user's key message comprises user's media access control address.
4. method according to claim 3, is characterized in that, described according to the user profile of described off-line, and described service node device carries out keep-alive processing to the user who hangs under described access node apparatus and comprises:
For the offline user that reaches pre-determined number, described service node device forces it to roll off the production line;
Or in predetermined interaction times, described service node device is not received the feedback of described access node apparatus, survey described access node apparatus and whether can reach; Be greater than threshold value if can reach and access the flow of described access node apparatus, think not off-line of user under described access node apparatus; Otherwise, think all user's off-lines under described access node apparatus, force all user offlines under described access node apparatus.
5. method according to claim 4, is characterized in that, the method also comprises:
For rolling off the production line or being forced the user of rolling off the production line, described service node device to inform that described access node apparatus stops detecting.
6. method according to claim 1, is characterized in that, the method also comprises:
In keep-alive processing procedure, take the bandwidth of described subscriber line circuit with the mutual information of described access node apparatus; Or in keep-alive processing procedure, do not take the bandwidth of described subscriber line circuit with the mutual information of described access node apparatus.
7. according to the method described in claim 1 to 6 any one, it is characterized in that, described service node device and described access node apparatus adopt Access Node Control Protocol, two-way converting mechanism agreement, expansion two-way converting mechanism agreement and/or Virtual Broadband Access Server agreement to carry out alternately.
8. according to the method described in claim 1 to 6 any one, it is characterized in that, described user comprises the point-to-point protocol user on DHCP user and/or Ethernet.
9. for the method for keep-alive processing, it is characterized in that, the method comprises:
When user is by after access node apparatus access service node device, described access node apparatus receives the user's of the needs inspection sending from service node key message;
Described access node apparatus receives the described key message that needs the user who checks, draw the user profile of off-line by scanning the mode of the key message that whether comprises the user that described needs check in self address table of media access control, and described offline user information is fed back to described service node device, user is as long as active have flow media interviews address table on described access node apparatus to have the existence of this user media accessing to control address;
The user profile of described off-line is for carrying out keep-alive processing for described service node device to the user who hangs under described access node apparatus.
10. service node device, is characterized in that, this equipment comprises:
Transmitting element, after accessing by access node apparatus as user, mutual with described access node apparatus, the user's of needs inspection key message is sent to described access node apparatus;
Receiving element, for receiving the described key message that needs the user who checks, draw the user profile of off-line by scanning the mode of the key message that whether comprises the user that described needs check in self address table of media access control, and described offline user information is fed back to described service node device, user is as long as active have flow media interviews address table on described access node apparatus to have the existence of this user media accessing to control address;
Keep-alive unit, for according to the user profile of described off-line, carries out keep-alive processing to the user who hangs under described access node apparatus.
11. equipment according to claim 10, is characterized in that, described keep-alive unit comprises:
Judgment sub-unit, for judging whether offline user reaches pre-determined number;
Control subelement, for the offline user for reaching pre-determined number, force it to roll off the production line.
12. equipment according to claim 10, is characterized in that, described keep-alive unit comprises:
Survey subelement, for the interaction times predetermined, do not receive the feedback of described access node apparatus, survey described access node apparatus and whether can reach;
Control subelement, if be greater than threshold value for the flow that can reach and access described access node apparatus, think that user is active under described access node apparatus; Otherwise, think that all users are inactive under described access node apparatus, force all user offlines under described access node apparatus.
13. access node apparatus, is characterized in that, this equipment comprises:
Receiving element, for when user is by after access node apparatus access service node device, receives the user's of the needs inspection sending from service node key message;
Detecting unit, for receiving the described key message that needs the user who checks, draw the user profile of off-line by scanning the mode of the key message that whether comprises the user that described needs check in self address table of media access control, and described offline user information is fed back to described service node device, user is as long as active have flow media interviews address table on described access node apparatus to have the existence of this user media accessing to control address;
Feedback unit, for the user profile to described service node device feedback off-line, the user profile of described off-line is for carrying out keep-alive processing for described service node device to the user who hangs under described access node apparatus.
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| CN200910110755.6A CN101674669B (en) | 2009-10-12 | 2009-10-12 | Method, service node equipment and access node equipment for keep-alive processing |
| PCT/CN2010/073112 WO2010145407A1 (en) | 2009-10-12 | 2010-05-24 | Method, service node device and access node device for keep-alive processing |
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| CN200910110755.6A CN101674669B (en) | 2009-10-12 | 2009-10-12 | Method, service node equipment and access node equipment for keep-alive processing |
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| CN101674669B (en) * | 2009-10-12 | 2014-11-05 | 中兴通讯股份有限公司 | Method, service node equipment and access node equipment for keep-alive processing |
| CN102857399B (en) * | 2012-08-20 | 2015-06-17 | 华为技术有限公司 | MAC address deleting method, device and system of VPLS dual homing network |
| CN103297689A (en) * | 2013-04-28 | 2013-09-11 | 温州市凯能电子科技有限公司 | Controllable video recycling and releasing network camera |
| CN103401729A (en) * | 2013-07-30 | 2013-11-20 | 上海斐讯数据通信技术有限公司 | Method for detecting abnormal offline of authenticate user |
| CN103414778B (en) * | 2013-08-16 | 2016-05-25 | 成都广达新网科技股份有限公司 | A kind of cluster Network Management Equipment method of keep-alive step by step |
| CN104021033B (en) * | 2014-06-23 | 2018-06-08 | 中国银行股份有限公司 | A kind of ashing technique and system of busy processing node |
| CN107666419B (en) * | 2016-07-28 | 2020-12-11 | 中兴通讯股份有限公司 | Virtual broadband access method, controller and system |
| CN107566213B (en) * | 2017-08-28 | 2020-09-25 | 新华三技术有限公司 | Keep-alive detection method and device |
| CN112333248B (en) * | 2020-10-26 | 2023-09-01 | 金蝶软件（中国）有限公司 | Login failure verification method and related device |
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| CN101674669B (en) * | 2009-10-12 | 2014-11-05 | 中兴通讯股份有限公司 | Method, service node equipment and access node equipment for keep-alive processing |
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| WO2010145407A1 (en) | 2010-12-23 |
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