CN102164078B - Policy routing method, device and system - Google Patents

Policy routing method, device and system Download PDF

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CN102164078B
CN102164078B CN201110074314.2A CN201110074314A CN102164078B CN 102164078 B CN102164078 B CN 102164078B CN 201110074314 A CN201110074314 A CN 201110074314A CN 102164078 B CN102164078 B CN 102164078B
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address
application protocol
list
gateway
server
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CN102164078A (en
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魏逢一
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Beijing Star Net Ruijie Networks Co Ltd
Ruijie Networks Co Ltd
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Beijing Star Net Ruijie Networks Co Ltd
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Abstract

The invention provides a policy routing method, device and system. The policy routing method comprises the following steps: a gateway obtains an internet protocol (IP) address list corresponding to an application protocol; according to the IP address list and a pre-configured application policy routing list corresponding to the application protocol, an address policy routing list corresponding to IP addresses is generated by the gateway; and the gateway identifies the destination address of received data flow and performs rout selection according to the route which is in the address policy routing list and corresponds to the destination address. According to the policy routing method, device and system, effective and reliable policy routing can be realized.

Description

Policy routing method, Apparatus and system
Technical field
The present invention relates to communication technical field, relate in particular to a kind of policy routing method, Apparatus and system.
Background technology
In recent years, the high speed development of Internet technology makes the application kind of carrying on wide area network and application quantity in continuous increase, for example online game, video conference, VOIP (Voice Over Internet Protocol, the networking telephone), Email, P2P (Peer-to-Peer, point-to-point) application etc.What bring with it is the bandwidth demand day by day expanding, particularly the appearance of P2P application.And the link outlet bandwidth of the access wide area networks such as enterprise, Internet bar is limited often, how rationally, effectively distribute limited wide area network link bandwidth, become problem demanding prompt solution.
For this reason, industry is taked according to the application type of data, its transmission path to be distinguished conventionally, two (or many) wide area network links are rented by for example enterprise or Internet bar, and wherein link is used for transmitting crucial application, and another is used for transmitting non-critical application.Such as two circuits all can be rented by now a lot of Internet bars, a normally high-quality circuit and a low quality circuit, wherein high-quality circuit is for transmitting the key application (online game, JICQ etc.) of Internet bar, and low quality circuit is used for transmitting the down load application such as P2P.This kind of situation, just needs the outlet gateway device of Internet bar to carry out routing according to application, thereby reaches the object that ensures the normal operation of crucial application.
In prior art, pass through to configure the different routing policies corresponding to different application on gateway device, gateway device is forwarded the packet to corresponding path according to the application protocol type of routing policy and reception message, but due to current most of enterprise, the local area network (LAN)s such as Internet bar are the network environment inside in network address translation (NAT) all, when they access the Internet (Internet), all need first to carry out NAT conversion, and existing application identification technology conventionally need to be analyzed multiple messages of a data flow and just can know (the particularly application based on Transmission Control Protocol of the application protocol type of this data flow, in the time of TCP three-way handshake, normally do not know the application protocol type of this data flow), in such cases, tactful route based on application just cannot realize.
Summary of the invention
For above-mentioned defect, the invention provides a kind of policy routing method, Apparatus and system, effective to realize, reliable tactful route.
The invention provides a kind of policy routing method, it is characterized in that, comprising:
Gateway obtains the Internet protocol IP address list corresponding to application protocol;
Described gateway generates the address Policy routing table corresponding to IP address according to described IP address list and the pre-configured application strategy routing table corresponding to application protocol;
Described gateway is identified the destination address of the data flow receiving, and carries out routing according to route corresponding with described destination address in described the address Policy routing table.
According to a further aspect in the invention, also provide a kind of gateway, comprising:
IP address list acquisition module, for obtaining the IP address list corresponding to application protocol;
Strategy routing configuration module, for generating the address Policy routing table corresponding to IP address according to described IP address list and the pre-configured application strategy routing table corresponding to application protocol;
Routing module, for identifying the destination address of received data flow, carries out routing according to route corresponding with described destination address in described the address Policy routing table.
The present invention also provides another kind of policy routing method, comprising:
Server generates the IP address list corresponding to application protocol;
Described server provides described IP address list to gateway, to generate the address Policy routing table corresponding to IP address by described gateway according to described IP address list and the pre-configured application strategy routing table corresponding to application protocol, and according to the destination address of the data flow receiving of described the address Policy routing table and identification, described data flow is carried out to route.
According to another aspect of the invention, also provide a kind of server, comprising:
IP address list generation module, for generating the IP address list corresponding to application protocol;
IP address list sending module, for providing described IP address list to gateway, to generate the address Policy routing table corresponding to IP address by described gateway according to described IP address list and the pre-configured application strategy routing table corresponding to application protocol, and according to the destination address of the data flow receiving of described the address Policy routing table and identification, described data flow is carried out to route.
The present invention also provides a kind of policy-routing system, comprises server provided by the invention and that be connected with described server, gateway provided by the invention.
According to policy routing method of the present invention, gateway, server and policy-routing system, by utilizing the IP address list corresponding with application protocol type the tactful route being associated with application protocol to be converted to the tactful route being associated with object IP address, in practical application, Internet server only provides single service conventionally, a server only provides a kind of service, so in fact the IP address of Internet server is the one mark of application protocol, thereby can be effective, realize exactly the tactful route based on application configuring, avoided the problem of the tactful route break causing when according to first message None-identified application protocol type of data flow, therefore very reliable tactful route can be provided.
Brief description of the drawings
Fig. 1 is the network system architecture figure of application policy routing method of the present invention.
Fig. 2 is the flow chart of policy routing method of the present invention.
Fig. 3 is the structural representation of gateway of the present invention.
Fig. 4 is the flow chart of the another kind of policy routing method of the present invention.
Fig. 5 is the structural representation of server of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, technical scheme of the present invention is clearly and completely described.
Fig. 1 is the network system architecture figure of application policy routing method of the present invention.As shown in Figure 1, this network system comprises gateway server and gateway, this gateway server is for example Cloud Server, and gateway quantity is for example multiple, and wherein each gateway connects a local area network (LAN), local area network (LAN) is connected with the Internet (Internet) by gateway, and each gateway is at least connected with Internet by a link; And can be wherein the equipment of opening NAT as the gateway of the cloud client of Cloud Server, can be also the equipment of non-NAT.Below taking gateway server as Cloud Server as example describes policy routing method of the present invention.
Fig. 2 is the flow chart of policy routing method of the present invention.As shown in Figure 2, this policy routing method comprises:
Step S100, gateway obtains the Internet protocol IP address list corresponding to application protocol;
Particularly, in this step, gateway obtains the Internet server ip address list corresponding to each application protocol, wherein, this application protocol can be the upper main flow internet, applications existing of Internet, and is preferably according to the application protocol of first its type of message None-identified of data flow.
Step S200, gateway generates the address Policy routing table corresponding to IP address according to described IP address list and the pre-configured application strategy routing table corresponding to application protocol;
Particularly, gateway is provided with the tactful route based on application in advance, and the packet that is for example A by received application protocol, by the first link transmission, is that the data flow of other application protocol except A is by the second link transmission by application protocol.Gateway is after the IP address list obtaining corresponding to each application protocol, IP address is associated with tactful route: for example comprise 10 IP addresses (IP0 to IP9) corresponding to the IP address list of application protocol A,, by corresponding with the first link these 10 IP addresses (IP0 to IP9), be about to be converted to the tactful route based on address based on the tactful route of application.
Step S300, gateway is identified the destination address of the data flow receiving, and carries out routing according to route corresponding with described destination address in described the address Policy routing table.
Particularly, gateway receives after data flow, resolve the destination address of this data flow, and by inquire about the destination address of this data flow in the address Policy routing table corresponding to IP address forming in step S200, obtain the route corresponding to this data flow, thereby according to this data flow implementation strategy route.
According to the policy routing method of above-described embodiment, gateway is by obtaining the IP address list corresponding with application protocol type in the Internet, and by this IP address list, the tactful route being associated with application protocol is converted to the tactful route being associated with object IP address.In practical application, Internet server only provides single service conventionally, and server only provides a kind of service, so in fact the IP address of Internet server is the one mark of application protocol.So can realize efficiently and accurately the configured tactful route based on application by IP address-based tactful route, and the problem that it has avoided the tactful route break causing when according to first message None-identified application protocol type of data flow, therefore can provide very reliable tactful route.
Further, in the policy routing method of above-described embodiment, gateway obtains corresponding to the step of the IP address list of application protocol and comprises:
Step S101, gateway obtains application protocol list from server;
Particularly, collecting the main flow internet, applications existing on the Internet, can be also all internet, applications, and this collection mode can be manually to collect.When the internet, applications that makes to collect is only when according to the application protocol of first its type of message None-identified of data flow, also need internet, applications one by one to analyze, extract the RM of its data flow, for example, for identifying by " tagged word " in OSI 7 layer protocols etc.If discovery data flow cannot be identified by first message of its communication, this application protocol is added in application protocol list.For example: the data flow of application A is based on TCP communication, and its data flow only can identify by whether containing " aabbcc " tagged word in first message after TCP three-way handshake, application A added in application protocol list; Suppose that application B can identify by port, applies B without joining in application protocol list.The application protocol list of collecting according to aforesaid way is placed into (being for example the gateway Cloud Server in Fig. 1) on server, and regularly obtains application protocol list from this server by gateway device.
Step S102, gateway collection is corresponding to the IP address of the application protocol in described application protocol list;
Gateway device obtains after application protocol list, by opening application identification (can use any application identification technology of the prior art), all data flow of the gateway device of flowing through are analyzed to identification, if the application protocol identifying is in application protocol list, check whether Internet server ip address corresponding to this data flow has been recorded in this locality: if there is record, do not carry out any operation; If no, Intetnet server ip address corresponding this data flow is recorded in the storage medium of equipment, be for example internal memory, hard disk or flash memory etc.The information recording should comprise concrete application protocol and the Internet server ip address corresponding to this application protocol of this record correspondence.
Step S103, the IP address of described application protocol is sent to described server by gateway, to be generated the IP address list that corresponds respectively to each application protocol in described application protocol list by described server;
Particularly, gateway is regularly submitted to server by above-mentioned recorded information.The submission cycle is for example one hour.
Step S104, gateway obtains described IP address list from described server.
Server receives after the information of regularly submission of gateway, information is comprehensively analyzed, for each application protocol generates a corresponding Internet server ip address list, only retain wherein one for the identical information of being submitted to by different gateways, to guarantee that the IP address in IP address list do not repeat.
Further, in the policy routing method of above-described embodiment, gateway also comprises after described server obtains the step of described IP address list:
Step S105, described gateway receives the IP address list update notification that described server sends;
Particularly, the information of submitting to server due to gateway has certain ageing, so preferably server upgrades IP address list according to pre-defined rule.Concrete update mode is for example: server receives that application protocol that certain day certain gateway is submitted to is that the Internet server ip address of application A is 1.1.1.1, but after a scheduled time in (being for example 1 day) all do not receive this record that any gateway is submitted to, server thinks that this record lost efficacy, IP address 1.1.1.1 is deleted from the IP address list of application A.After server is carried out IP address list renewal or in upgrading, send IP address list update notification to gateway.
Step S106, gateway obtains the IP address list after renewal in response to described IP address list update notification.
In addition, although in above-mentioned steps S105 and step S106 exemplified with the IP address list that is obtained renewal by server notification gateway, in actual applications, also can initiatively be monitored server by gateway, to know in time whether IP address list upgrades.
Although in the policy routing method of above-described embodiment, taking gateway server as Cloud Server as example describes policy routing method, but those skilled in the art is to be understood that, the policy routing method of above-described embodiment can be applied to the network architecture of single gateway equally, effective to realize, reliable tactful route.Apply in the policy routing method of above-described embodiment when (comprise Cloud Server and multiple gateway) in the network architecture based on cloud, because the gateway customer end data that Cloud Server is managed is more, therefore it is compared to the network architecture of single gateway, and implementation strategy route is more timely and effective.
Fig. 3 is the structural representation of gateway of the present invention.As shown in Figure 3, this gateway comprises:
IP address list acquisition module 10, for obtaining the Internet protocol IP address list corresponding to application protocol;
Strategy routing configuration module 20, for generating the address Policy routing table corresponding to IP address according to described IP address list and the pre-configured application strategy routing table corresponding to application protocol;
Routing module 30, for identifying the destination address of received data flow, carries out routing according to route corresponding with described destination address in described the address Policy routing table.
The flow process of the gateway implementation strategy route of above-described embodiment is identical with the policy routing method of above-described embodiment, so locate to repeat no more.
According to above-described embodiment, gateway is by obtaining the IP address list corresponding with application protocol type in the Internet, and by this IP address list, the tactful route being associated with application protocol is converted to the tactful route being associated with object IP address.Because gateway can reliable recognition object IP address according to first message of data flow, so by IP address-based tactful route implementation strategy route efficiently and accurately.
Further, in the gateway of above-described embodiment, IP address list acquisition module comprises:
Application protocol acquiring unit, for obtaining application protocol list from server;
IP address collecting unit, gathers the IP address corresponding to the application protocol in described application protocol list;
Transmitting element, for the IP address of described application protocol is sent to described server, to be generated the IP address list that corresponds respectively to each application protocol in described application protocol list by described server;
IP address list acquiring unit, for obtaining described IP address list from described server.
Further, in the gateway of above-described embodiment, the IP address list update notification that IP address list acquiring unit also sends for receiving described server, and obtain the IP address list after renewal in response to described IP address list update notification.
Further, in the gateway of above-described embodiment, the application protocol relating in application protocol list is preferably according to the application protocol of first its type of message None-identified of data flow.
Fig. 4 is the flow chart of the another kind of policy routing method of the present invention.As shown in Figure 4, this policy routing method comprises:
Step S100 ', server generates the IP address list corresponding to application protocol;
Wherein, this application protocol is preferably according to the application protocol of first its type of message None-identified of data flow.
Step S200 ', described server provides described IP address list to gateway, to generate the address Policy routing table corresponding to IP address by described gateway according to described IP address list and the pre-configured application strategy routing table corresponding to application protocol, and according to the destination address of the data flow receiving of described the address Policy routing table and identification, described data flow is carried out to route.
According to the policy routing method of above-described embodiment, because server generates corresponding to the IP address list of application protocol and provides it to gateway, so that the pre-configured tactful route based on application is converted to IP address-based tactful route by gateway.Because gateway can reliable recognition object IP address according to first message of data flow, so can realize implementation strategy route efficiently and accurately.
Further, in the policy routing method of above-described embodiment, server generates corresponding to the step of the IP address list of application protocol and comprises:
Step S101 ', described server generates application protocol list, and described application protocol list is sent to described gateway, with the IP address corresponding to the application protocol in described application protocol list by described gateway collection;
Step S102 ', described server obtains described IP address from described gateway, and generates the IP address list that corresponds respectively to each application protocol in described application protocol list.
Further, in the policy routing method of above-described embodiment, server also comprises after gateway provides the step corresponding to the IP address list of application protocol:
Step S300 ', server upgrades described IP address list, and sends IP address list update notification to described gateway, to obtain the IP address list renewal by described gateway from described server.
Fig. 5 is the structural representation of server of the present invention.As shown in Figure 5, this server comprises:
IP address list generation module 10 ', for generating the IP address list corresponding to application protocol;
IP address list sending module 20 ', for providing described IP address list to gateway, to generate the address Policy routing table corresponding to IP address by described gateway according to described IP address list and the pre-configured application strategy routing table corresponding to application protocol, and according to the destination address of the data flow receiving of described the address Policy routing table and identification, described data flow is carried out to route.
The flow process of the server implementation strategy route of above-described embodiment is identical with the policy routing method of above-described embodiment, so locate to repeat no more.
According to the server of above-described embodiment, because server generates corresponding to the IP address list of application protocol and provides it to gateway, so that the pre-configured tactful route based on application is converted to IP address-based tactful route by gateway.Because gateway can reliable recognition object IP address according to first message of data flow, so can realize implementation strategy route efficiently and accurately.
Further, in the server of above-described embodiment, IP address list generation module comprises:
Application protocol list generation unit, for obtaining application protocol list, and is sent to described gateway by described application protocol list, with the IP address corresponding to the application protocol in described application protocol list by described gateway collection;
IP address list generation unit, for obtain described IP address from described gateway, and generates the IP address list that corresponds respectively to each application protocol in described application protocol list.
Further, in the server of above-described embodiment, IP address list generation module is also for described IP address list is upgraded, and sends IP address list update notification to described gateway, to obtain the IP address list renewal by described gateway from described server.
Further, in the server of above-described embodiment, the application protocol relating in application protocol list is preferably according to the application protocol of first its type of message None-identified of data flow.
The present invention also provides a kind of policy-routing system, this system comprise the server of above-mentioned arbitrary embodiment with this server gateway that be connected, above-mentioned arbitrary embodiment.
Below, to build the policy-routing system of server as the quantity of Cloud Server and gateway as multiple above-described embodiments as example under the environment of Internet bar, the flow process of this policy-routing system implementation strategy route is described.
Step S1, builds Cloud Server and gateway on the internet;
Step S2, collects according to the application protocol of first its type of message None-identified of data flow, sets up application protocol list and places it on Cloud Server;
Step S3, gateway A (one of client of Cloud Server) is regularly obtained application protocol list from Cloud Server, and in real time the data flow of flowing through is carried out to application identification, in the time identifying certain data flow for game, from the five-tuple (comprising source IP address, object IP address, TCP/UDP agreement, TCP/UDP port and TCP/UDP destination interface) of data flow, extract outer net IP address 2.2.2.2.Gateway A generates record " game: 2.2.2.2 ", and this record is stored in the storage medium of self;
Step S4, gateway A is regularly uploaded to Cloud Server by these records;
Step S5, gateway B (another client of Cloud Server) identifies and is uploaded to be recorded as " game: 3.3.3.3 " of Cloud Server;
Step S6, the information that under Cloud Server receives, all gateways feed back, comprehensively analyzes, and removes duplicate message, and the final server ip address list that generates game is " game: 2.2.2.2,3.3.3.3 ";
Step S7, Cloud Server sends the IP address list of this generation to all gateways under it;
Step S8, has opened the tactful route based on application on gateway C (the another client of Cloud Server), be provided with game in advance and walk high quality link WAN0, and all the other flows are all walked low quality links WAN1;
Step S9, gateway C is converted into the tactful route based on destination address according to the IP address list obtaining by the tactful route based on application, for example, in the time detecting that the destination address of the data flow of flowing through is 2.2.2.2 or 3.3.3.3, this forwarding data flow is upper to high quality link WAN0, and all the other destination addresses are forwarded to low quality links WAN1.
According to the policy-routing system of above-described embodiment, can realize implementation strategy route efficiently and accurately.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (13)

1. a policy routing method, is characterized in that, comprising:
Gateway obtains the Internet protocol IP address list corresponding to application protocol;
Described gateway generates the address Policy routing table corresponding to IP address according to described IP address list and the pre-configured application strategy routing table corresponding to application protocol;
Described gateway is identified the destination address of the data flow receiving, and carries out routing according to route corresponding with described destination address in described the address Policy routing table;
Gateway obtains corresponding to the step of the IP address list of application protocol and comprises:
Described gateway obtains application protocol list from server;
Described gateway collection is corresponding to the IP address of the application protocol in described application protocol list;
The IP address of described application protocol is sent to described server by described gateway, to be generated the IP address list that corresponds respectively to each application protocol in described application protocol list by described server;
Described gateway obtains described IP address list from described server;
Wherein, described gateway collection, corresponding to the IP address of the application protocol in described application protocol list, comprising:
Described gateway is identified all data flow of the described gateway of flowing through;
If the application protocol identifying is in described application protocol list, check whether Internet server ip address corresponding to described data flow has been recorded in this locality, if no, described Internet server ip address corresponding described data flow is recorded in the storage medium of described gateway.
2. policy routing method according to claim 1, is characterized in that, described gateway also comprises after described server obtains the step of described IP address list:
Described gateway receives the IP address list update notification that described server sends;
Described gateway obtains the IP address list after renewal in response to described IP address list update notification.
3. according to the arbitrary described policy routing method of claim 1 to 2, it is characterized in that, described application protocol is according to the application protocol of first its type of message None-identified of data flow.
4. a gateway, is characterized in that, comprising:
IP address list acquisition module, for obtaining the IP address list corresponding to application protocol;
Strategy routing configuration module, for generating the address Policy routing table corresponding to IP address according to described IP address list and the pre-configured application strategy routing table corresponding to application protocol;
Routing module, for identifying the destination address of received data flow, carries out routing according to route corresponding with described destination address in described the address Policy routing table;
Described IP address list acquisition module comprises:
Application protocol acquiring unit, for obtaining application protocol list from server;
IP address collecting unit, gathers the IP address corresponding to the application protocol in described application protocol list;
Transmitting element, for the IP address of described application protocol is sent to described server, to be generated the IP address list that corresponds respectively to each application protocol in described application protocol list by described server;
IP address list acquiring unit, for obtaining described IP address list from described server;
Wherein, described IP address collecting unit, identifies specifically for all data flow to the described gateway of flowing through; If the application protocol identifying is in described application protocol list, check whether Internet server ip address corresponding to described data flow has been recorded in this locality, if no, described Internet server ip address corresponding described data flow is recorded in the storage medium of described gateway.
5. gateway according to claim 4, is characterized in that, the IP address list update notification that described IP address list acquiring unit also sends for receiving described server, and obtain the IP address list after renewal in response to described IP address list update notification.
6. according to the arbitrary described gateway of claim 4 to 5, it is characterized in that, described application protocol is according to the application protocol of first its type of message None-identified of data flow.
7. a policy routing method, is characterized in that, comprising:
Server generates the IP address list corresponding to application protocol;
Described server provides described IP address list to gateway, to generate the address Policy routing table corresponding to IP address by described gateway according to described IP address list and the pre-configured application strategy routing table corresponding to application protocol, and according to the destination address of the data flow receiving of described the address Policy routing table and identification, described data flow is carried out to route;
Described server generates corresponding to the step of the IP address list of application protocol and comprises:
Described server generates application protocol list, and described application protocol list is sent to described gateway, with the IP address corresponding to the application protocol in described application protocol list by described gateway collection;
Described server obtains described IP address from described gateway, and generates the IP address list that corresponds respectively to each application protocol in described application protocol list;
Wherein, described server obtains described IP address from described gateway, and generates the IP address list that corresponds respectively to each application protocol in described application protocol list, comprising:
Described server obtains described IP address from described gateway;
Described server is analyzed the described IP address getting, remove duplicate message, generate the IP address list corresponding to each application protocol in described application protocol list, wherein, the IP address list of described each application protocol comprises: at least one IP address that each application protocol and described each application protocol are corresponding.
8. policy routing method according to claim 7, is characterized in that, described server also comprises after gateway provides the step corresponding to the IP address list of application protocol:
Described server upgrades described IP address list, and sends IP address list update notification to described gateway, to obtain the IP address list renewal by described gateway from described server.
9. according to the arbitrary described policy routing method of claim 7 to 8, it is characterized in that, described application protocol is according to the application protocol of first its type of message None-identified of data flow.
10. a server, is characterized in that, comprising:
IP address list generation module, for generating the IP address list corresponding to application protocol;
IP address list sending module, for providing described IP address list to gateway, to generate the address Policy routing table corresponding to IP address by described gateway according to described IP address list and the pre-configured application strategy routing table corresponding to application protocol, and according to the destination address of the data flow receiving of described the address Policy routing table and identification, described data flow is carried out to route;
Described IP address list generation module comprises:
Application protocol list generation unit, for obtaining application protocol list, and is sent to described gateway by described application protocol list, with the IP address corresponding to the application protocol in described application protocol list by described gateway collection;
IP address list generation unit, for obtain described IP address from described gateway, and generates the IP address list that corresponds respectively to each application protocol in described application protocol list;
Wherein, described IP address list generation unit, specifically for obtain described IP address from described gateway, the described IP address getting is analyzed, remove duplicate message, generate the IP address list corresponding to each application protocol in described application protocol list, wherein, the IP address list of described each application protocol comprises: at least one IP address that each application protocol and described each application protocol are corresponding.
11. servers according to claim 10, it is characterized in that, described IP address list generation module is also for described IP address list is upgraded, and sends IP address list update notification to described gateway, to obtain the IP address list renewal by described gateway from described server.
12. according to claim 10 to 11 arbitrary described servers, it is characterized in that, described application protocol is according to the application protocol of first its type of message None-identified of data flow.
13. 1 kinds of policy-routing system, is characterized in that, comprise server as described in as arbitrary in claim 10 to 12 with as described in server be connected as arbitrary in claim 4 to 6 as described in gateway.
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