CN100438428C - Gateway device active/standby veneer changeover method and its application - Google Patents
Gateway device active/standby veneer changeover method and its application Download PDFInfo
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- CN100438428C CN100438428C CNB2004100583158A CN200410058315A CN100438428C CN 100438428 C CN100438428 C CN 100438428C CN B2004100583158 A CNB2004100583158 A CN B2004100583158A CN 200410058315 A CN200410058315 A CN 200410058315A CN 100438428 C CN100438428 C CN 100438428C
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Abstract
The present invention discloses a main /standby single plate switching method for a gateway device. The utility model comprises that 1+1 backup is established for business single plates; a virtual logic coincidence relation table is established for the business single plates and the backup thereof; when main /standby switch needs to be carried out, the coincidence master / standby relations in the virtual logical coincidence relation table are modified; the main /standby single plate switch is completed according to the modified virtual logical coincidence relation table. The present invention is used for preventing the loss of users' business data when the main /standby switch of the gateway device is carried out, reducing the influence of the retransmission of the users' business data and increasing the stability and the reliability of the device.
Description
Technical field
The present invention relates to network communications technology field, be specifically related to a kind of method that realizes the gateway device active/standby single board changeover.
Background technology
3-G (Generation Three mobile communication system) (3G) is with its advanced air interface technologies, the comprehensive IP packet switch of core net and control technology, make the technology of data communication industry and wireless communication industry obtain good fusion, make radio communication can satisfy the demand that data business (mainly being IP operation) is increased fast better.
WCDMA (Wideband Code Division Multiple Access (WCDMA))/CDMA2000 is a 3-G (Generation Three mobile communication system), has adopted and the similar structure of second generation mobile communication system, on system configuration and function, has all comprised Radio Access Network (RAN) and core network (CN).Wherein, Radio Access Network is used to handle all and the wireless function associated that comprises the management of Radio Resource; Core network is responsible for the interior all voice calls of treatment system and is connected with data, and the exchange of realization and external network and route.
Core network is from being divided into two subsystems in logic: circuit commutative field (CS) and packet-switched domain (PS).Traditional circuit-switched service is handled in the CS territory, and each communication need take some resources and set up a special-purpose link, as speech business; Packet switching service is handled based on packet switching network in the PS territory, and signaling and data all are to transmit in Packet Based Network with data packet form, do not need to set up dedicated link, and each grouping all oneself is looked for route.
In the WCDMA network, the capital equipment of core network-packet switched domain is SGSN (Serving GPRS Support Node) and GGSN (Gateway GPRS Support Node), as shown in Figure 1.Wherein, SGSN carries out functions such as mobile management, safety management, access control and Route Selection.GGSN is responsible for providing GPRSPLMN (GPRS public land mobile network) interface with outside PDN (Packet Data Network), and security mechanism (as fire compartment wall) between necessary net is provided.GGSN is WCDMA core net PS domain-functionalities nodes, links to each other by Gn/Gp interface SGSN, links to each other with the external packet data network by the Gi interface, and GGSN provides route and the encapsulation of packet between WCDMA mobile network and external data network.
The data service of mobile packet data Client-initiated inserts through SGSN equipment, mails to GGSN, mails to the external packet data net via GGSN at last.In this process, SGSN and GGSN equipment room be to realize alternately by both Gn/Gp interfaces, Gn is the interface between the interior GSN (GPRS Support Node) of same PLMN (public land mobile network), Gp is the interface between the GSN of different PLMN, GTP (GPRS Tunnel Protocol) agreement is deferred in communication between interface, in the GTP agreement, comprise Trail management function.Described path is meant the path of command transmitting and data between a pair of GSN, is made of IP address/UDP (user datagram protocol) port numbers of end points separately, can be divided into signaling paths and data path; The path agreement is meant the UDP/IP agreement that is used to carry the GTP agreement between GSN.
The CDMA2000 system partly is made up of portable terminal MT, base station transceiver BTS, base station controller BSC and moving exchanging center MSC, Packet Control Function PCF module and packet data serving node PDSN etc.PDSN (packet data serving node) is one of core node of CDMA core net PS domain-functionalities, major function provides route and the encapsulation of packet between PS network and external data network (Internet or privately owned IP network), between BSC and PDSN, it provides the Packet data service support to PCF in cdma system.Interface between PDSN and the PCF is A10/A11 (R-P interface) interface, the customer service between A10 interface transmission PCF and the PDSN; Signaling information between A11 interface transmission PCF and the PDSN.Interface between PCF and the BSC is the A8/A9 interface, the customer service between A8 interface transmission BS and the PCF; Signaling information between A9 interface transmission BS and the PCF.PCF can put together with BSC as the part of Radio Access Network, also can place separately, the position of PDSN in the CDMA2000 network as shown in Figure 2, link to each other with the external packet data network by the Pi interface, route and the encapsulation of packet between CDMA2000 mobile network and external data network is provided.
By Fig. 1 and Fig. 2 as seen, GGSN/PDSN is as the nucleus equipment in PS territory in each automatic network, and topmost function is to finish the data interaction of wireless core network and outside PDN (Packet Data Network).
In WCDMA, the data message of mobile phone directly carries by GTP (GPRS Tunnel Protocol) encapsulation at SGSN and GGSN, be that the tunnel by GTP carries out the mutual of data and signaling between the gn interface of GGSN and the SGSN, set up the information such as PDP (packet data protocol) context of validated user by Signalling exchange GGSN and SGSN, GGSN will carry out data interaction by Gi interface and PDN after will being reduced into the IP message from the data message that the wireless access network side joint is received on this basis.
Equally, in the CDAM network, the message between PDSN and PCF carries by GRE (generic route encapsulation) encapsulation, and promptly the tunnel by GRE carries out the mutual of data and signaling between the R-P of PDSN interface and PCF.Equally, mutual by signaling set up the information such as context of validated user between PDSN and the PCF, and PDSN handles and the mutual message of PCF in the R-P side, handles data message mutual of wireless network and outside PDN at the Pi interface.
In a word, GGSN/PDSN is in the role of gateway device in the data exchange process of wireless network, is the tie of contact wireless core network data service and outer net data service, and its data message forwarding path as shown in Figure 3.
As the gateway device of wireless core network, when breaking down, equipment how to guarantee that it is the problem of very being concerned about during the user uses that user data still can be transmitted.Usually, to the gateway device employing is the backup method of N+1, promptly when the equipment operate as normal, there be N module to carry out the forwarding of user data, when if one of them module breaks down, module as backup will start and replace malfunctioning module to carry out Business Processing and forwarding of data, the normal data that guarantees equipment by this backup module is handled, and improves the reliability of equipment.
The flow process of masterslave switchover is as shown in Figure 4:
In the equipment normal operating conditions, professional slave board is in idle state, user's relevant information only exists on the corresponding business plate, if certain piece business board fault, this moment, standby plate started, without any user's information, originally the data flow of handling through the business board that breaks down all can't be transmitted owing to the business board fault, initiates activation process again after the user must be rolled off the production line on it.
As can be seen, there is following shortcoming in this backup method:
1, N+1 backup, promptly a module backs up N the module of working, if, will cause this moment certain customers can't carry out the mutual of data service so when in equipment, having two or more equipment to break down, then can't carry out the backup of data forwarding function;
2, when equipment fault is switched, because N corresponding 1 backup module of operational module, therefore which module that can't predict in N the module can break down, so backup module need reinitialize relevant information, like this, can cause the relevant user profile of malfunctioning module all to lose, certain customers are rolled off the production line, can't proceed the forwarding of data message.Only carry out again just carrying out forwarding of data after signaling is consulted, that is to say that need restart signaling consults, and just can carry out the processing of follow-up data business at SGSN and GGSN, PCF and PDSN.Like this, can make the user data service disconnection.
Summary of the invention
The purpose of this invention is to provide a kind of method that realizes the gateway device active/standby single board changeover, existing cause the problem that user data service interrupts when a plurality of modules break down in the N+1 backup method, further improve the reliability of equipment to solve.
For this reason, the invention provides following technical scheme:
A kind of gateway device active/standby single board changeover method comprises:
A, set up 1+1 backup for each service board, and on active and standby plate, store user grouping data protocol PDP Context information respectively;
B, set up the virtual logical mapping table be used to store at least one group of main and standby boards corresponding relation for described each service board and backup thereof; Wherein, this virtual logical mapping table comprises virtual plate number and logical board number, one group of logical board number of each virtual plate correspondence, in this group of logical board number one is the main logic plate number of professional mainboard, another is the backup logical board number of the professional slave board of described mainboard;
C, when needs carry out masterslave switchover, revise in the described virtual logical mapping table corresponding main and standby relation;
D, user service data is forwarded to main logic plate number pairing service board in the amended virtual logical mapping table, this service board is handled described user service data according to described user's PDP Context information of storage.
Described steps A comprises: described service board backups to the business information of handling on its corresponding slave board by predetermined way.
Described step B comprises:
B1, be that described service board and slave board thereof are set logical board number and virtual plate number;
B2, number set up described virtual logical mapping table according to the logical board number of described setting and described virtual plate.
Described step C comprises:
C1, when needs carry out masterslave switchover, obtain the virtual plate that need switch number;
C2, number revise the corresponding relation of virtual plate described in the described virtual logical mapping table number and described logical board number according to described virtual plate.
Described step C2 is specially:
Exchange the corresponding relation of described virtual plate number and corresponding main logic plate number and backup logical board number.
Described step D comprises:
D1, set up the route information table comprise described virtual plate number;
D2, obtain the virtual plate number of depositing described user's PDP Context information according to described route information table;
D3, number search described virtual logical mapping table, obtain the main logic plate number of described virtual plate correspondence according to described virtual plate;
D4, described user service data is forwarded on the described main logic plate corresponding service veneer.
Described step D also comprises: the service board after switching is handled described user service data according to the business information of backup in advance.
Described predetermined way is specially:
Regularly the user service information related data in the described service board is backuped on the backup veneer of described service board correspondence.
Described service board and corresponding backup veneer thereof backup each other.
By above technical scheme provided by the invention as can be seen, the present invention makes each gateway device in the system obtain reliable backup by adopting the 1+1 backup method; Number carry out the processing and the forwarding of data by introducing the virtual logical plate, the user is not being had the on-line apparatus state under the situation of perception, can finish the masterslave switchover of equipment simply, effectively, guaranteed the continuity that user service data is transmitted; Simultaneously, also avoided in the prior art having strengthened reliability as the gateway device of contact wireless network and Packet Data Network's bridge because the user that masterslave switchover causes activation manipulation has again reduced the influence of on-line apparatus state to the user.
Description of drawings
Fig. 1 is the position view of GGSN in the WCDMA network;
Fig. 2 is the position view of PDSN in the CDMA2000 network;
Fig. 3 is a GGSN/PDSN data message forwarding path schematic diagram;
Fig. 4 is the flow process of data forwarding during the gateway device masterslave switchover in the prior art;
Fig. 5 is the flow process of data forwarding during the gateway device masterslave switchover among the present invention;
Fig. 6 is a distributed system device structure block diagram;
Fig. 7 is the flow chart of the inventive method.
Embodiment
Core of the present invention is the shortcoming at the prior art scheme, each service board of gateway device is adopted the mode of 1+1 backup, for different logical board numbers is set in each service board and backup thereof respectively, set same virtual plate number for numbering different service boards and backup thereof, number set up the virtual logical mapping table according to the logical board number of setting and virtual plate, this table acceptance of the bid understand each virtual plate correspondence one group of logical board number and should group in the service board of operation.In the data forwarding routing table, adopt virtual plate number to come the address of identification service veneer.When message enters gateway device, at first deposit the virtual plate number of this user context information by routing table lookup, find the logical board number of transmitting processing by the virtual logical mapping table then, and forward the data to the counterlogic plate and handle.When needs carry out masterslave switchover, at first revise the content of corresponding virtual logical relation correspondence table, the logical board number of slave board and the logical board number of former service board are exchanged.At this moment, find the virtual plate number of depositing this user context information on routing table, the logical board number of number finding by virtual plate is the logical board number of current business veneer, by this logical board number data is sent to the corresponding service veneer and handles.Like this, identical before making in the masterslave switchover process data forwarding approach and switching, the user can not perceive switching of equipment, thereby guaranteeing that user data is transmitted still can normally carry out when system's masterslave switchover.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
The flow process of data forwarding when Fig. 5 is a gateway device masterslave switchover of the present invention:
When professional mainboard was in normal operating conditions, professional slave board was in Status of Backups, and professional mainboard is forwarded to slave board with user profile and carries out data backup; When professional mainboard breaks down, had associated user's information (this information comprises user's forwarding information, charge information etc.) this moment on the slave board, customer traffic is forwarded on the professional slave board, data flow will continue to transmit, and make the user can not feel the action of equipment.
Usually, gateway device mostly adopts distributed system architecture, as shown in Figure 6:
Business board shown in the figure 1,2 and business board 3,4 respectively are one group of active and standby business board.Wherein, master control borad is finished the control to each service board function and interface board function, interface board is finished the reception and the transmission of data, an interface board can correspondingly be organized business boards more, have route information table on interface board, this table comprises that needs transmit routing iinformations such as the destination address of data and logical board number sign.When data enter gateway device, at first search this route information table according to the address information in these data, find the corresponding service veneer, forward the data to this service board then and handle; Equally, when data need send, by service board data are sent to interface board, interface board is searched this route information table according to the address information in these data, finds the next node address, then data is sent to next node.
In order to overcome the shortcoming of prior art N+1 backup mode, the present invention has adopted the backup method of 1+1 to gateway device, promptly each service board all is equipped with an identical with it slave board, and the Hot Spare of realization slave board and service board, such as, regularly the business information in the service board is backuped on the slave board by certain mode, make the slave board fully can perception and own corresponding service veneer, thereby guarantee the backup fully of EM equipment module, improve the stability of whole system.In case this service board breaks down or need carry out system maintenance the time, do not need slave board is carried out initialization, and carry out signaling with relevant device and consult user service data to be forwarded on this slave board to handle.
The specific implementation flow process may further comprise the steps referring to Fig. 7:
Step 701: for each service board is set up 1+1 backup, when equipment operation, service board backups to the business information of handling on its corresponding slave board by predetermined way.Such as, service board and its slave board synchronous operation by regularly carrying out information interaction, in time backup to the business information on the service board on the corresponding slave board.Service board and corresponding backup veneer thereof backup each other, and the veneer of current participation Business Processing is called professional mainboard, and the current veneer that has neither part nor lot in Business Processing is called professional slave board.
In GPRS (GPRS) system, an important database record information is arranged, be user's PDP Context (block data protocol context), be used for management from mobile phone MS (portable terminal) to gateway GGSN (Gateway GPRS Support Node) and to the data routing iinformation the ISP (network traffic provider).When MS visit GPRS internal network or external the Internet network, MS proposes the PDP Context request message, MS can contract with operator and select the GGSN of fixed service, or select the GGSN of service by SGSN (Serving GPRS Support Node), SGSN sends out to GGSN and sets up the PDP Context request message, and GGSN distributes IP address of MS.After successfully setting up and activating PDP Context, MS, SGSN and GGSN have stored user's PDP Context information.The routing iinformation that user position information and data have been arranged, MS just can be visited the resource of this network.Therefore, the business information on the above-mentioned service board comprises user's PDP Context information.
Step 702: for logical board number and virtual plate number are set in service board and backup thereof.
Step 703: number set up the virtual logical mapping table according to the logical board number of setting and virtual plate.
The virtual logical mapping table comprises: virtual plate number, with number corresponding main logic plate of virtual plate number, the backup logical board number corresponding with virtual plate.
In the setting of logical board number and virtual plate number, make the logical number of logical board number, and virtual plate is number corresponding to the address number in the routing table corresponding to equipment, therefore, and for a pair of active and standby veneer, its logical board number difference, but their virtual plate is number identical.For example: for a pair of active and standby plate, their logical board number is respectively 3 and 4, but their common virtual plates number are 3, and promptly virtual plate correspondence a main logic plate number and a backup logical board number.The corresponding relation of virtual plate number and logical board number is stored in the virtual logical mapping table, index in the mapping table and virtual plate are number corresponding, fill in number relevant main logic plate of current and this virtual plate number at correspondence position, can find corresponding main logic plate number by the virtual logical mapping table like this.Virtual logical mapping table form is as shown in table 1 below:
Table 1:
Wherein the 1,2,3, the 4th, the logical board number of equipment, owing to adopt the method for the corresponding virtual plate of two logical board numbers number, so the corresponding virtual plate number is 1,3, logical board number 1 and 2 corresponding virtual plates number 1 in equipment, logical board number 3 and 4 corresponding virtual plates numbers 3.Wherein, the main logic plate of the virtual plate of logical board number in the bracket 2 expressions number 1 correspondence number, same, the main logic plate of the virtual plate of logical board number 3 expressions number 3 correspondences in the bracket number.
Step 704: set up the route information table comprise virtual plate number.
The present technique field personnel know, gateway device needs a route information table in order to realize the correct forwarding of user data, in this table, indicated the destination address that each user data need be transmitted by address information.Usually, represent with the logical address of each service board.In the present invention,, introduced virtual plate number, in route information table, number come the destination address of identifying user data with this virtual plate in order to realize the 1+1 backup of equipment.Describe in front, the a pair of logical board number of each virtual plate correspondence (numbering of professional mainboard and professional slave board), and the virtual logical mapping table has provided the main logic plate number of each virtual plate correspondence, like this, just can find the address of actual professional mainboard, and then user data can be forwarded on the corresponding service mainboard and handle according to the virtual logical mapping table.
Step 705: when needs carry out masterslave switchover, obtain the virtual plate that to switch number.Usually, when device fails maybe needs to safeguard,, need carry out switching of master/slave device in order to ensure the normal operation of customer service.Such as, during device fails, the service board that breaks down can report fault warning to device management unit, can comprise the address information (logical board number and/virtual plate number) of this service board in this fault warning information, so device management unit can be known the virtual plate that breaks down number.If desired certain unit of equipment is safeguarded, in the time of need carrying out masterslave switchover, can be by the selected virtual plate that need switch of device management unit number.
Step 706: the corresponding relation of revising this virtual plate in the virtual logical mapping table number and logical board number according to virtual plate number.
Because one group of logical board number of each virtual plate correspondence, wherein, one is the logical board number of professional mainboard, and another is the logical board number of professional slave board, and has comprised the logical board number information of corresponding service mainboard in virtual plate number.Again owing to be 1+1 backup, therefore only need to revise the main logic plate number of virtual plate correspondence.
For example, for the virtual logical mapping table shown in the table 1,, need the switching services on this plate to logical board number 1 corresponding service slave board if logical board number 2 corresponding service veneers break down.At this moment, only need to exchange virtual plate number and corresponding main logic plate number and the corresponding relation that backs up logical board number, then the corresponding relation of list item is revised as shown in the following table 2:
Table 2:
After finishing the modification of virtual logical mapping table, to the forwarding of user service data be identical before breaking down.Following several steps:
Step 707: obtain the virtual plate number of depositing user's PDP Context information according to route information table.
Step 708: number search the virtual logical mapping table according to virtual plate, obtain the main logic plate number of virtual plate correspondence.
Step 709: user service data is forwarded on the main logic plate corresponding service veneer.Service board is handled user data according to this user's PDP Context information of having stored.
By said process as seen, when utilizing the inventive method to finish faulty equipment to switch, because being used for management is to write professional slave board synchronously by professional mainboard from mobile phone MS (portable terminal) to gateway GGSN and to the data routing iinformation the ISP, after professional mainboard breaks down, directly user data is forwarded on the corresponding slave board by the inventive method.Like this, for user data, the forwarding approach of data service is identical, and the user can not perceive switching of equipment; For slave board, owing to realized the Hot Spare of business information, therefore do not need to carry out signaling and consult and can handle the user data that receives, having guaranteed that user data is transmitted still can normally carry out when system's masterslave switchover.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (9)
1, a kind of gateway device active/standby single board changeover method is characterized in that, comprising:
A, set up 1+1 backup for each service board, and on active and standby plate, store user grouping data protocol PDP Context information respectively;
B, set up the virtual logical mapping table be used to store at least one group of main and standby boards corresponding relation for described each service board and backup thereof; Wherein, this virtual logical mapping table comprises virtual plate number and logical board number, one group of logical board number of each virtual plate correspondence, in this group of logical board number one is the main logic plate number of professional mainboard, another is the backup logical board number of the professional slave board of described mainboard;
C, when needs carry out masterslave switchover, revise in the described virtual logical mapping table corresponding main and standby relation;
D, user service data is forwarded to main logic plate number pairing service board in the amended virtual logical mapping table, this service board is handled described user service data according to described user's PDP Context information of storage.
2, method according to claim 1 is characterized in that, described steps A comprises: described service board backups to the business information of handling on its corresponding slave board by predetermined way.
3, method according to claim 1 and 2 is characterized in that, described step B comprises:
B1, be that described service board and slave board thereof are set logical board number and virtual plate number;
B2, number set up described virtual logical mapping table according to the logical board number of described setting and described virtual plate.
4, method according to claim 3 is characterized in that, described step C comprises:
C1, when needs carry out masterslave switchover, obtain the virtual plate that need switch number;
C2, number revise the corresponding relation of virtual plate described in the described virtual logical mapping table number and described logical board number according to described virtual plate.
5, method according to claim 4 is characterized in that, described step C2 is specially:
Exchange the corresponding relation of described virtual plate number and corresponding main logic plate number and backup logical board number.
6, method according to claim 3 is characterized in that, described step D comprises:
D1, set up the route information table comprise described virtual plate number;
D2, obtain the virtual plate number of depositing user's PDP Context information according to described route information table;
D3, number search described virtual logical mapping table, obtain the main logic plate number of described virtual plate correspondence according to described virtual plate;
D4, user service data is forwarded on the described main logic plate corresponding service veneer.
7, method according to claim 2 is characterized in that, described step D also comprises: the service board after switching is handled described user service data according to the business information of backup in advance.
8, method according to claim 2 is characterized in that, described predetermined way is specially:
Regularly the user service information related data in the described service board is backuped on the backup veneer of described service board correspondence.
9, method according to claim 1 is characterized in that, described service board and corresponding backup veneer thereof backup each other.
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| CN105357114A (en) * | 2014-08-21 | 2016-02-24 | 杭州迪普科技有限公司 | Distributed network equipment |
| CN105847185B (en) * | 2015-01-16 | 2019-04-09 | 杭州迪普科技股份有限公司 | Message processing method, device and the distributed apparatus of distributed apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6366557B1 (en) * | 1997-10-31 | 2002-04-02 | Nortel Networks Limited | Method and apparatus for a Gigabit Ethernet MAC (GMAC) |
| CN1109416C (en) * | 2000-04-25 | 2003-05-21 | 华为技术有限公司 | Method and equipment for swapping active with standby switches |
-
2004
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6366557B1 (en) * | 1997-10-31 | 2002-04-02 | Nortel Networks Limited | Method and apparatus for a Gigabit Ethernet MAC (GMAC) |
| CN1109416C (en) * | 2000-04-25 | 2003-05-21 | 华为技术有限公司 | Method and equipment for swapping active with standby switches |
Non-Patent Citations (2)
| Title |
|---|
| 高可靠性通信设备主备倒换软件的设计. 王继刚，顾国昌，卢东昕.电信科学. 2003 |
| 高可靠性通信设备主备倒换软件的设计. 王继刚，顾国昌，卢东昕.电信科学. 2003 * |
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