WO2009039797A1

WO2009039797A1 - A method, system and apparatus for dynamically updating classifier information

Info

Publication number: WO2009039797A1
Application number: PCT/CN2008/072582
Authority: WO
Inventors: Shuo Li
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-09-28
Filing date: 2008-09-27
Publication date: 2009-04-02
Also published as: CN101399741B; CN101399741A

Abstract

A method for dynamically updating classifier information is disclosed, and the method includes the following steps: the gateway receives classifier information transmitted by the server; the gateway judges whether the dynamic information exist flag is set; if said flag is set, the gateway dynamically updates the classifier information according to the dynamic information exist flag. Through the embodiments of the invention, the gateway updates relative parameters of classifier information according to the classifier information set by the server, thus the method overcomes the disadvantage that the prior art could not dynamically update classifier information and makes the present procedure of classifying by matching classifier be compatible with the scene of classifying by interface information.

Description

Method, system and device for dynamically updating classifier information

Technical field

Embodiments of the present invention relate to the field of network communication technologies, and in particular, to a method, system, and apparatus for dynamically updating classifier information. Background technique

WiMAX ( Worldwide Interoperability for Microwave Access) is a wireless metropolitan area network technology based on the IEEE (Institute of Electrical and Electronics Engineers) 802.16 standard. The WiMAX network is mainly composed of three parts, that is, the client, the ASN (Access Service Network), the BS (Base Station), and the ASN-GW (Access Service Network-Gateway). CSN (Connected Service Network) includes PPS (Prepaid Server), AAA Server (Authentication Authority Account Server, Authentication, Authorization and Accounting Server), HA (Home Agent, Home Agent) Equal logical entities. The wireless side of the WiMAX network is a wireless metropolitan area network access technology based on the IEEE 802.16d/e standard. The NWG (Network Working Grou, Network Working Group of the WiMAX Forum) is responsible for developing end-to-end network specifications with the goal of: Establishing an end-to-end network reference model to meet the needs of the WiMAX Forum Operators Working Group; Developing end-to-end network specifications , define functional entities and network interfaces in the network; lay the foundation for interoperability authentication of WiMAX systems. The reference model for the NWG Stage2 network is shown in Figure 1. The ASN includes two network elements, a BS and an ASN-GW.

The classification of services in the WiMAX system is mainly performed by the classifier. The ASN-GW classifies the downlink data by matching the downlink classifier, and the MS (Mobile Subscriber) classifies the uplink data by matching the uplink classifier. The classifier can identify one or a type of service with the same QoS (Quality of Service) attributes. The existing classifiers are mainly classified by some parameters in the IP (Internet Protocol) header, see Table 1. These parameters are in the preset business flow In the case of the user's subscription, the AAA server is configured to be sent to the ASN-GW through the authorization process. In the case of the dynamic service flow, it is determined in the application layer negotiation process and delivered to the ASN-GW through the policy server.

Table 1

The following line of packets is used as an example to illustrate the classification process of the classifier.

Assume that a user subscribes to three types of services: Internet (Internet), Game (Play), and Voice over Internet Protocol (VoIP). These three services are classified by the source address of the downlink packets. The corresponding classifiers are:

VoIP: {Priority =1, IP Source Address and Mask = 12.130.5.0/255.255.255.0 }

Game: {Priority = 2, IP Source Address and Mask = 11.120.1.0/255.255.255.0 }

Internet : {Priority =3 , IP Source Address and Mask = 10.110.10.0/255.255.255.0 }

The relationship between the classifier and the user IP and DataPath (data path) is as shown in Figure 2. When the ASN-GW receives the downlink data packet, it can locate the above three classifiers according to the destination IP (user IP) of the packet, and then follow The priority in the classifier matches each classifier one by one. If a classifier is successfully matched, the packet corresponding to the classifier is used to forward the message to the BS.

By setting the classifier template, although different services can be distinguished, the actual application The specific parameters in the classifier template may not be available or difficult to collect and describe when setting up the classifier, and need to be dynamically updated in the business process. For example, in the following two application scenarios, the classifier information cannot be obtained when setting the classifier.

1) An operator requires self-operated services to directly access the Internet through the roaming gateway through HA, Internet services, emergency calls, etc. At this time, the user obtains the mobile IP address of the home location and the simple IP address of the roaming place, respectively. The service can be distinguished by the terminal IP, but the terminal IP cannot be obtained when setting the classifier, and the existing classifier has no relevant design for dynamic update.

2) An operator requires the WiMAX ASN-GW to support the classification of services on the R3 interface by using a Virtual Local Area Network (Virtual Local Area Network). The carrier believes that different services are connected through different tunnels in order to ensure service security. The R3 interface to the ASN-GW can be differentiated according to the identifiers of the tunnels, such as the VLAN ID (Virtual Local Area Network Identifier) and the GRE Key (Generic Routing Encapsulation Key). . However, only the IP header parameter information is available in the existing classifier, and the existing process of classifying by the matching classifier cannot be compatible with the scenario that is classified by the connection or interface information.

In the process of implementing the present invention, the inventors have found that at least the following problems exist in the prior art: In actual application, the specific parameters in the classifier information cannot be obtained when the server sets the classifier, and the gateway cannot also use the classifier in the business process. The parameters are dynamically updated, and the existing processes for classifying by matching classifiers are not compatible with scenarios that rely on interface information for classification. Summary of the invention

Embodiments of the present invention provide a method, system, and apparatus for dynamically updating classifier information, so as to implement dynamic update of classifier information, and enable classifier information to support scenarios that are classified according to interface information.

To achieve the above objective, an embodiment of the present invention provides a method for dynamically updating classifier information, including the following steps: The gateway receives classifier information delivered by a server; The gateway determines whether the dynamic information existence bit in the classifier information is set; if set, the gateway dynamically updates the classifier information according to the dynamic information existence bit.

In another aspect, the embodiment of the present invention further provides a system for dynamically updating classifier information, including: a server, configured to set classifier information, and send the classifier information; and a gateway, connected to the server, And receiving the classifier information sent by the server, and determining whether the dynamic information presence bit in the classifier information is set, if set, dynamically updating the classifier according to the dynamic information existence bit information.

In another aspect, an embodiment of the present invention further provides a server, including: an information setting module, configured to set classifier information; and an information delivery module, connected to the information setting module, configured to set the information setting module The classifier information is sent to the gateway.

In another aspect, the embodiment of the present invention further provides a gateway, including: an information receiving module, configured to receive classifier information delivered by a server; and an information determining module, connected to the information receiving module, for determining the information The information about the presence of the dynamic information in the classifier information received by the receiving module is set; the information updating module is connected to the information determining module, and is configured to dynamically update the location after the information determining module determines that the dynamic information exists. The classifier information.

Compared with the prior art, the embodiment of the present invention has the following advantages: By adding dynamic information in the classifier information, the application of the classifier is more flexible, and the existing process of classifying by the matching classifier can be compatible with the connection. Or the scenario where the interface information is classified. DRAWINGS

Figure 1 is a reference model of a prior art NWG Stage 2 network;

2 is a relationship diagram between a prior art classifier and a user IP and DataPath;

3 is a structural diagram of a system for dynamically updating classifier information according to an embodiment of the present invention; FIG. 4 is a flowchart of a method for dynamically updating classifier information according to an embodiment of the present invention; FIG. A schematic diagram of one. detailed description

The embodiment of the invention provides a method for dynamically updating the classifier information. The embodiment of the present invention dynamically updates the classifier to make the application of the classifier more flexible, and also enables the existing classification by the matching classifier. The process can be compatible with scenarios that rely on connection or interface information for classification.

As shown in FIG. 3, a structural diagram of a system for dynamically updating classifier information according to an embodiment of the present invention includes a server 1 and a gateway 2. Server 1 is used to set the classifier information, and the classifier information is sent to the gateway 2 through the authorization process. In the embodiment of the present invention, a dynamic information existence bit is added to the template of the classifier. When the server 1 sets the classifier information, it determines whether the classifier information needs to be dynamically updated according to the classifier setting policy and the networking setting, and if the classifier information needs to be dynamically updated. The server 1 then sets the dynamic information to the location bit. The dynamic information presence bit has two functions, one is to indicate which parameters in the classifier information the gateway 2 wants to dynamically update, and the other is to indicate which information is dynamic information that needs to be matched when the classifier is matched. The gateway 2 is connected to the server 1 and is configured to receive the classifier information delivered by the server 1. In the embodiment of the present invention, a dynamic parameter VPN ID (Virtual Private Network Identifier), a VLAN ID, a GRE KEY, and the like related to the interface information are added to the classifier information. After judging that the dynamic information in the classifier information has a position bit, the gateway 2 updates the parameter identified by the dynamic information existence bit when the service flow is established, and can distinguish different parameters by using the dynamically updated parameter when using the classifier classification. Business flow, and thus the classification function.

The server 1 includes an update judging module 11, an information setting module 12, and an information sending module 13. The update judging module 11 is configured to determine, according to the classifier setting policy and the networking setting, whether to dynamically update the classifier information when the classifier information is set, and if the classifier information needs to be dynamically updated, the notification information setting module 12 sets the location of the dynamic information. Bit. The dynamic information presence bit has two functions, one is to indicate which parameters in the classifier information to be dynamically updated by the gateway 2, and the other is to indicate which information is dynamic information that needs to be matched when the classifier is matched. The information setting module 12 is configured to: when the update determining module 11 determines that the classifier information needs to be dynamically updated, the dynamic information in the classifier information is in a position, and the present invention is implemented. A method for setting the presence of dynamic information in the example is shown in Table 2. Information delivery module

13 . Connect with the information setting module 12, and the classifier information used for setting the information setting module 12 is sent to the gateway 2 through the authorization process.

The gateway 2 includes a relationship configuration module 21, an information receiving module 22, an information determining module 23, an information updating module 24, a classifier determining module 25, a classifier issuing module 26, and a classifying module 27. The relationship configuration module 21 is configured to configure a correspondence between the service type and the interface information of the gateway 2, where the service type includes a VoIP service, a Game service, or an Internet service. The information receiving module 22 is configured to receive the classifier information sent by the server 1. In the embodiment of the present invention, the dynamic parameter VPN ID, VLAN ID, GRE KEY, etc. related to the interface information are newly added to the classifier information, and the meanings of these parameters are shown in Table 2. The information judging module 23 is connected to the information receiving module 22 for determining whether the dynamic information presence bit in the classifier information received by the information receiving module 22 is set. The information update module 24 is connected to the information judging module 223, and is configured to update the parameter identified by the presence bit of the dynamic information when the service flow is established after the information judging module 23 judges that the dynamic information exists. The classifier determining module 25 is connected to the information updating module 24, and is configured to determine, after the information updating module 24 updates the classifier information, whether the classifier corresponding to each service type is unique; the classifier issuing module 26 and the classifier determining module The connection is sent to the classification module 27 after the classifier determination module 25 determines that the classifier corresponding to each service type is unique. The classification module 27 is connected to the classifier delivery module 26 for classifying the downlink data by the classifier delivered by the matching classifier delivery module 26.

Table 2

Classifier parameters meaning

The priority of the Priority classifier determines the order in which the classifiers are matched, and the high-priority classifiers are advanced in line matching.

Dynamic Information Exist dynamic information presence bit, 8-bit Bitmasko

Flag Bit #8 = VPN ID .

Bit #7 = VLAN ID

Bit #6 = GRE KEY

Bit #5 = Source IP Address

Bit #4 = destination IP address Bit #3-1 Reserved, set to 0

1 means set.

IP TOS/DSCP Range and Mask The range and mask of the TOS/DSCP field in the IP header

Protocol type in the Protocol IP header

Source IP address and mask in the IP Source Address and Mask IP header

Destination IP address and mask in IP Destination Address and IP header

Mask

Source Port Range in the Source Port Range IP Header

Destination port range IP port destination port range

VPN ID Received VPN ID information of the port

VLAN ID receives the VLAN ID information of the 4 port

GRE KEY information on the GRE KEY receiving port. Table 2 Dynamic Information Exist Flag, VPN ID, VLAN ID, GRE

The KEY is a newly added classifier parameter in the embodiment of the present invention. If the VPN ID bit in the Dynamic Information Exist Flag sent by the server 1 is set, that is, Bit #8 is set, the gateway 2 dynamically updates the VPN when the service flow is established. ID parameter, and this parameter is applied when the message is classified.

As shown in FIG. 4, a flowchart of a method for dynamically updating classifier information according to an embodiment of the present invention includes the following steps:

Step S401: The gateway receives the classifier information delivered by the server. Specifically, the classifier information is dynamic information added in the classifier, and includes: a virtual private network identifier VPN ID, a virtual local area network identifier VLAN ID, and/or a universal route encapsulation key GRE KEY. The server first sets the classifier information before the server sends the classifier information. In the embodiment of the present invention, a dynamic information existence bit is added to the template of the classifier, and when the server sets the classifier information, the server determines whether the classifier information needs to be dynamically updated according to the classifier setting policy and the networking setting, and if the classifier needs to be dynamically updated. Information, then the server sets the dynamic information presence bit. The dynamic information presence bit has two functions, one is to indicate which parameters in the classifier information to be dynamically updated by the gateway, and the other is to indicate which information is dynamic information that needs to be matched when the classifier is matched. A method for setting a presence bit of dynamic information according to an embodiment of the present invention is shown in Table 2. After the server sets the classifier information, it passes the authorization process. The classifier information corresponding to the service is sent to the gateway. Before receiving the classifier information sent by the server, the gateway first configures the correspondence between the service type and the interface information of the gateway, and the service type includes a VoIP service, a Game service, or an Internet service.

Specifically, the interface includes a physical interface or a logical interface used by the gateway to connect with other devices, such as a FE interface, a GE interface, a tunnel interface, and a sub-interface. The gateway interface information is specifically configured as the interface description information of the interface of the gateway according to different service types or applications. For example, after the sub-interface is bound to the VLAN, the interface has the VLAN ID information; the tunnel interface and the peer device establish a GRE tunnel. After that, this interface has GRE KEY information.

Step S402, the gateway determines whether the dynamic information existence bit in the classifier information is set. After receiving the classifier information, the gateway determines whether the dynamic information presence bit in the classifier information is set.

Step S403, if set, the gateway dynamically updates the classifier information according to the dynamic information existence bit. After judging that the dynamic information in the classifier information has a position bit, the gateway updates the parameter identified by the presence of the dynamic information when the service flow is established, and can distinguish different services by using the dynamically updated parameters when using the classifier classification. Stream, and then implement the classification function. In the embodiment of the present invention, the dynamic parameter VPN ID, VLAN ID, GRE KEY, etc. related to the interface information are newly added to the classifier information, and the meanings of these parameters are as shown in Table 2. The Dynamic Information Exist Flag, VPN ID, VLAN ID, and GRE KEY in Table 2 are the newly added classifier parameters in the embodiment of the present invention. If the VPN ID bit in the Dynamic Information Exist Flag sent by the server is set, Bit #8 is placed. Bit, the gateway dynamically updates the VPN ID parameter when the service flow is established, and applies the parameter when the message is classified.

The classifier information is dynamic information added in the classifier, including a VPN ID, a VLAN ID, and/or a GRE KEY. In addition, the dynamically updated classifier information includes a source IP address and a destination IP address, and a source IP address and The destination IP address is obtained according to the information of the user of the classifier on the gateway, and the gateway queries the user entry corresponding to the classifier to obtain the IP address information and update the classifier information.

After updating the corresponding parameters according to the presence of the dynamic information, the gateway checks each type of service. The uniqueness of the classifier, check and pass, confirm that each type of service classifier is unique, and then send the classifier that updated the corresponding parameters to the entity that performs the classification function. After the downlink data arrives at the gateway, the gateway completes the data classification function by matching the valid parameters in the downlink classifier, including the original parameters of the classifier and the parameters added in the embodiment of the present invention. Then distribute the data of the good class to the client.

As shown in FIG. 5, it is a schematic diagram of Embodiment 1 of a method for dynamically updating classifier information according to the present invention. FIG. 5 shows Internet service data, indicating VoIP service data.

- Indicates other business data.

In actual networking, different types of services are often distinguished by different channels on the R3 interface. As shown in Figure 5, a VoIP service tunnel is established between ASN-GW and a gateway of the VoIP network. This tunnel can be identified by VPN. It can also be identified by a VLAN. Other services can also establish other service tunnels between the gateway and the service gateway. Through the interface information, VPN ID or VLAN ID of these tunnels on the ASN-GW, the classifier can distinguish different services.

In this networking mode, the mapping between the service type and the VPN can be configured in advance on the ASN-GW. For example, the VRF (VPN Routing and Forwarding) instance corresponding to the VoIP service is named voipservice (VPN ID=3). ), the VRF instance corresponding to the Game service is named gameservice (VPN ID=5). MSI and MS2 are VPN users who have signed up for Internet, Game, and VoIP services. You can set the service classifier on the AAA Server as:

Internet: Do not set the classifier

Game: {Dynamic information exists in the VPN ID location bit }

VoIP: {Dynamic information exists in the VPN ID location bit }

After receiving the service classifier with the dynamic information in the location, the ASN-GW updates the VPN ID to the classifier information after querying the local configuration, and then checks whether the classifier of each type of service has uniqueness. To confirm that each type of service classifier is unique, it is delivered to the entity that performs the classification function.

After a downlink packet arrives at the ASN-GW, according to the destination IP of the packet, that is, the user IP, the ASN-GW can locate the two classifiers above, and then follow the superiority in the classifier. The first level matches each classifier one by one, in the embodiment of the present invention, the VPN due to the classifier information

The ID dynamic information existence bit is set. Therefore, the ASN-GW uses the VPN ID information of the packet to match the classifier. If it is a VoIP service, the classifier matching the VPN ID=3 succeeds, and the ASN-GW uses the classifier to correspond. The DataPath forwards the message to the BS.

In the above method for dynamically updating the classifier information, in the WiMAX system, the AAA Server sets the VPN ID bit in the bitifier information presence bit, and after receiving the classifier information, the ASN-GW updates the VPN ID to the classifier information. Thereby, the dynamic update of the classifier information is realized, and the existing process of classifying by the matching classifier can be compatible with the scenario that is classified according to the interface information.

The second embodiment of the present invention is a method for dynamically updating classifier information according to an embodiment of the present invention in a 3GPP (3rd Generation Partnership Project) system. In the 3GPP system, the classifier information parameters are shown in Table 3.

table 3

8 7 6 4 3 2 1

Parameter identifier 1 Octet z+1

Length of Parameter contents 1 Octet z+2

Dynamic information exists, 8bits,

1 means set

Parameter contents 1 Octet z+3

Octet k

Parameter identifier 2 Octet k+1

Length of Parameter contents 2 Octet k+2

Parameter contents 2 Octet k+3

Octet p

Octet p+1 Octet q

Parameter identifier N Octet q+1

Length of Parameter contents N Octet q+2

Parameter contents N Octet q+3

Octet v The dynamic information presence bit in Table 3 is the new 8-bit dynamic information presence bit. The type identifier of the classification information parameter can be set as follows: Bits

87654321

00010000 IPv4 remote address type

00100000 IPv6 remote address type

00110000 Protocol identifier/Next header type

01000000 Single local port type

01000001 Local port range type

01010000 Single remote port type

01010001 Remote port range type

01100000 Security parameter index type

01110000 Type of service/Traffic class type

10000000 Flow label type

10000001 VPN ID

10000010 VLANID

10000011 GREKEY

The other values are reserved and may be set to 0. The VPNID, the VLAN ID, and the GREKEY are the newly added classifier parameters in the embodiment of the present invention. If the classifier dynamic information sent by the server has a VPN ID bit in the bit, that is, Bit #8 is set. Then, the gateway dynamically updates the VPN ID parameter when the service flow is established, and applies the parameter when the message is classified.

An embodiment of the present invention provides a method for dynamically updating classifier information. In the embodiment of the present invention, a dynamic information presence bit is added to the classifier information, and the gateway updates the corresponding parameter according to the presence of the dynamic information, and the solution is solved. The problem that the existing classifier cannot be dynamically updated, and the existing process of classifying by the matching classifier through the newly added classifier parameters can be compatible with the scenario that is classified by the interface information.

In another embodiment of the present invention, the gateway dynamically updates the classifier information according to the presence of the dynamic information. The ASN-GW obtains the dynamic update parameter after receiving the service classifier with the dynamic information. VPN ID) Updates the dynamically updated parameters to the classifier information. The parameters that can be dynamically updated and the manner of obtaining listed in the present invention can be specifically as follows: Bit #8 = VPN ID: You need to query the "correspondence between service type and gateway interface information" configuration. Because AAA sends the classifier according to the service flow granularity, the gateway can obtain which service the classifier that needs to be updated belongs to, and then use the service. Type query configuration can get interface information (such as VLAN ID, GRE KEY, etc.) and update to the classifier.

Bit #7 = VLAN ID: Same as VPN ID.

Bit #6 = GRE KEY: Same as VPN ID.

Bit#5 = Source IP address: It can be obtained according to the information recorded in the user table of the user of the classifier on the GW. The IP address is dynamically allocated by the gateway after the user passes the authentication, and the IP assigned to the user is recorded in the user. In the entry, the user name of the user corresponding to the classifier can be obtained by updating the classifier to obtain the IP address information.

Bit#4 = Destination IP Address: The same IP address.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by hardware or by software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Rights request

A method for dynamically updating classifier information, comprising the steps of:

The gateway receives the classifier information delivered by the server;

The gateway determines whether a dynamic information presence bit in the classifier information is set; if set, the gateway dynamically updates the classifier information according to the dynamic information presence bit.

The method of dynamically updating the classifier information according to claim 1, wherein before the gateway receives the classifier information sent by the server, the method further includes the following steps: the gateway configuring a service type and the gateway interface Correspondence of information.

The method for dynamically updating the classifier information according to claim 2, wherein the gateway interface information is specifically: the interface description information of the interface of the gateway according to different service types or applications.

4. The method of dynamically updating classifier information according to claim 1 or 2, further comprising the steps of:

Determining, by the gateway, whether the classifier corresponding to the service type is unique;

If unique, the classifier is delivered to the entity performing the classification function.

The method of dynamically updating classifier information according to claim 4, further comprising the step of: the gateway classifying the downlink data by matching the classifier.

The method of dynamically updating classifier information according to claim 1, wherein before the gateway receives the classifier information sent by the server, the method further includes the following steps: the server sets the classifier information.

The method of dynamically updating the classifier information according to claim 6, wherein the setting of the classifier information by the server specifically includes:

Determining, by the server, whether the classifier information needs to be dynamically updated;

If the classifier information needs to be dynamically updated, the server sets the dynamic information presence bit.

The method for dynamically updating classifier information according to any one of claims 1 to 7, wherein the classifier information is dynamic information added in a classifier, and includes: a virtual private network identifier VPN ID, virtual The LAN identifies the VLAN ID and/or the Generic Routing Encapsulation Key GRE KEY.

9. The method of dynamically updating classifier information according to claim 1, wherein the step of dynamically updating the classifier information according to the presence of the dynamic information presence bit is:

The gateway obtains a dynamically updated parameter, and dynamically updates the dynamically updated parameter to the classifier information according to the dynamic information presence bit.

The method for dynamically updating the classifier information according to claim 1, wherein the gateway obtains the dynamically updated parameter, which may be obtained by querying the local configuration or obtaining the user entry.

The method of dynamically updating classifier information according to claim 1, wherein the dynamically updated classifier information further comprises: a source IP address and a destination IP address.

12. The method of dynamically updating classifier information as claimed in claim 11, wherein:

The source IP address and the destination IP address are obtained according to the information of the user of the classifier on the gateway, and the gateway queries the user entry corresponding to the classifier to obtain the IP address information and update the classification. Information.

A system for dynamically updating classifier information, comprising: a server, configured to set classifier information, and send the classifier information; a gateway, connected to the server, configured to receive the The classifier information sent by the server, and determining whether the dynamic information presence bit in the classifier information is set. If set, the classifier information is dynamically updated according to the dynamic information existence bit.

14. The system of dynamically updating classifier information according to claim 13, wherein the server comprises:

An information setting module, configured to set the classifier information;

The information sending module is connected to the information setting module, and is configured to send the classifier information set by the information setting module to the gateway.

The system for dynamically updating the classifier information according to claim 13, wherein the server further comprises: an update determining module, connected to the information setting module, configured to determine whether the classifier information needs to be dynamically updated. And if the classifier information needs to be dynamically updated, the update determining module notifies the information setting module to set the dynamic information in the classifier information to a position.

The system for dynamically updating classifier information according to claim 13, wherein the gateway comprises:

An information receiving module, configured to receive the classifier information sent by the server; the information determining module is connected to the information receiving module, and configured to determine whether the dynamic information in the classifier information received by the information receiving module is located Bit

The information update module is connected to the information determining module, and configured to dynamically update the classifier information after the information determining module determines that the dynamic information exists.

The system for dynamically updating the classifier information according to claim 13, wherein the gateway further comprises a relationship configuration module, configured to configure a correspondence between the service type and the gateway interface information.

The system for dynamically updating classifier information according to claim 13 or 17, wherein the gateway further comprises:

a classifier determining module, configured to be connected to the information update module, configured to determine, after the information update module updates the classifier information, whether the classifier corresponding to the service type is unique;

The classifier issuing module is connected to the classifier judging module, and is configured to deliver the classifier after the classifier judging module judges that the classifier corresponding to the service type is unique.

The system for dynamically updating the classifier information according to claim 18, wherein the gateway further comprises: a classification module, connected to the classifier issuing module, configured to match the classifier to deliver the module The issued classifier classifies the downlink data.

20. A server, comprising:

An information setting module, configured to set classifier information;

An information delivery module, connected to the information setting module, configured to set the information The classifier information set by the module is sent to the gateway.

The server of claim 20, further comprising: an update determining module, coupled to the information setting module, configured to determine whether the classifier information needs to be dynamically updated, if the classifier needs to be dynamically updated The information is sent to the information setting module to notify the information setting module to set the dynamic information in the classifier information to a position.

22. A gateway, comprising:

An information receiving module, configured to receive classifier information delivered by the server;

An information judging module is connected to the information receiving module, and configured to determine whether a dynamic information presence bit in the classifier information received by the information receiving module is set;

The gateway according to claim 22, further comprising a relationship configuration module, configured to configure a correspondence between the service type and the gateway interface information.

The gateway according to claim 23, further comprising:

The gateway according to claim 24, further comprising: a classification module, configured to connect to the classifier sending module, to perform downlink data by matching a classifier sent by the classifier sending module classification.