WO2017012443A2

WO2017012443A2 - Message transmission method, access node, access controller and access system

Info

Publication number: WO2017012443A2
Application number: PCT/CN2016/085990
Authority: WO
Inventors: 郑若滨
Original assignee: 华为技术有限公司
Priority date: 2015-07-17
Filing date: 2016-06-16
Publication date: 2017-01-26
Also published as: WO2017012443A3

Abstract

Provided are a message transmission method, an access node, an access controller and an access system. In the method, messages are not processed by an access node, but rather by an access controller, so that it is not necessary for the access node to support a relay function, reducing operation and maintenance difficulties and costs. In the method, an access controller receives a first message sent by an access node, the first message comprising a first identifier; the access controller obtains a line identifier according to the first identifier; the access controller obtains a second message according to the line identifier, the second message comprising the line identifier; the access controller sends the second message to a relay server.

Description

Message transmission method, access node, access controller and access system

This application is required to be submitted to the Chinese Patent Office on July 17, 2015, the application number is CN 201510424501.7, and the Chinese patent application titled “Control Surface Message Transmission Method, Access Node, Access Controller and Access System” is preferred. And the priority of the Chinese patent application submitted to the China Patent Office on March 31, 2016, the application number is CN 201610201117.5, and the invention name is “message transmission method, access node, access controller and access system”. The content is incorporated herein by reference.

Technical field

The embodiments of the present invention relate to communication technologies, and in particular, to a message transmission method, an access node, an access controller, and an access system.

Background technique

Currently, in the access network architecture, a message is transmitted between a client device and a relay server through a message propagation path. The message may be a Dynamic Host Configuration Protocol (DHCP) message, a router solicitation (RS), or a router advertisement (RA) message. During the message propagation process, each access node (AN) on the message propagation path needs to support the relay function. In other words, each access node on the message propagation path needs to configure the control plane to implement Relay function. When new services continue to emerge, each access node needs to configure the control plane for each new service, and the operation and maintenance cost and complexity are high.

Summary of the invention

The embodiments of the present invention provide a message transmission method, an access node, an access controller, and an access system, which help reduce operation and maintenance costs and complexity.

In a first aspect, a message transmission method is provided, the method comprising:

Receiving, by the access controller, a first message sent by the access node, where the first message includes a first identifier;

The access controller obtains a line identifier according to the first identifier;

The access controller obtains a second message according to the line identifier, where the second message includes the line identifier;

The access controller sends the second message to a relay server.

In the message transmission method provided by the embodiment of the present invention, the access controller obtains the second message including the line identifier according to the received first message from the access node. The access node does not need to insert a line identification operation on the message from the user. In this way, the control plane of the access node can be transferred to the access controller, and the control plane of the access node is separated from the access node. For example, the access node does not need to support the relay function, which helps to reduce operation and maintenance. Cost and complexity.

The first message and the second message may be control plane messages. The first message may be an open flow message, or the first message is a tunnel message.

Optionally, the access controller obtains the line identifier according to the first identifier, and the access controller obtains the line identifier according to the first identifier and the corresponding relationship, where the corresponding relationship includes Corresponding relationship between the first identifier and the line identifier.

Optionally, the obtaining, by the access controller, the line identifier according to the first identifier, includes: the access controller, according to the first coding rule, encoding the first identifier to obtain the line identifier.

The first encoding rule may be an encoding method for encoding the first identifier into the line identifier, or the first encoding rule may be to encode the first identifier into the line identifier. The index value corresponding to the encoding method.

Optionally, the first message further includes a first dynamic host configuration protocol (DHCP) message, the second message is a second DHCP message, and the access controller is configured according to the line identifier. Obtaining the second message includes: adding, by the access controller, the line identifier to the first DHCP message, obtaining the second DHCP message, where the second DHCP message includes the line identifier.

Optionally, the first message further includes a router solicitation (RS) message, where the second message is a first authentication, authorization, and accounting (AAA) message, and the access is performed. The controller obtains the second message according to the line identifier include:

The access controller generates the first AAA message according to the line identifier and the RS message, where the first AAA message includes the line identifier.

Optionally, the method further includes:

The access controller receives a fourth message sent by the relay server, where the fourth message includes a line identifier and Internet Protocol (IP) address information, where the IP address information is an IP address or an IP address prefix;

The access controller obtains the first identifier according to the line identifier;

The access controller obtains a third message according to the first identifier, where the third message includes the first identifier and the IP address information;

The access controller sends the third message to the access node.

The first message and the second message are control plane messages. The second message may be an openflow message, or the second message may be a tunnel message. The relay server may be a device that allocates IP address information to a user, such as an AAA server or a DHCP server capable of IP address information allocation.

Optionally, the obtaining, by the access controller, the first identifier according to the line identifier, that: the access controller obtains the first identifier according to the line identifier and the corresponding relationship, and the corresponding relationship And including a correspondence between the first identifier and the line identifier.

Optionally, the obtaining, by the access controller, the first identifier according to the line identifier, that: the access controller encodes the line identifier according to a second coding rule, to obtain the first identifier. .

The second encoding rule may be an encoding method for encoding the line identifier into the first identifier, or the second encoding rule may be to encode the line identifier into the first identifier. The index value corresponding to the encoding method.

Optionally, the fourth message is a third DHCP message, and the access controller obtains the third message according to the first identifier, where the access controller deletes the location included in the third DHCP message. Determining a line identifier, obtaining a fourth DHCP message, where the fourth DHCP message includes the IP address information; The access controller obtains the third message according to the first identifier and the fourth DHCP message, and the third message further includes the fourth DHCP message.

Optionally, the fourth message is a second AAA message, and the access controller obtains the third message according to the first identifier, where the access controller is configured according to the second AAA message Obtaining a router advertisement (RA) message, the RA message includes the IP address information, and the access controller obtains the third message according to the first identifier and the RA message The third message further includes the RA message.

Optionally, the first identifier includes a physical port number, and the line identifier includes at least one of a rack number, a frame number, a slot number, and a physical port number of the access node. The physical port number may be used to identify a physical port on the access node that communicates with a user.

Optionally, the first identifier includes a tunnel identifier and/or a logical port number, where the line identifier includes a virtual local area network identifier (VID) and a virtual path identifier (virtual) of the access node. Path identifier (VPI) and at least one of a virtual channel identifier (VCI).

Optionally, the first identifier includes a Media Access Control (MAC) address or an IP address of the access node, where the line identifier includes an identity identifier of the access node and a cabinet number. at least one.

Optionally, the first identifier includes a tunnel identifier, where the tunnel identifier is used to identify a tunnel between the access node and the access controller, and the line identifier includes a rack number of the access node. At least one of a frame number, a slot number, a physical port number, a VID, a VPI, a VCI, and an identity.

The VPI can be used to identify a virtual path on the access node that communicates with the user. The VCI can be used to identify virtual channels on the access node that communicate with users.

In a second aspect, a message transmission method is provided, the method comprising:

The access node receives the second message sent by the user;

The access node obtains a line identifier according to the second message, where the second message includes the line identifier;

The access node obtains the first identifier according to the line identifier;

Obtaining, by the access node, the first message according to the first identifier and the second message, where the first message includes the first identifier and the second message;

The access node sends the first message to an access controller.

In the method provided by the embodiment of the present invention, the first identifier corresponding to the line identifier is added to the first message that the access node may send to the access controller, and the control plane of the access node is transferred to the access controller. It helps to reduce the operation and maintenance costs and the complexity of access nodes.

Optionally, the obtaining, by the access node, the first identifier according to the line identifier, the obtaining, by the access node, the first identifier according to the line identifier and the corresponding relationship, where the corresponding relationship includes the line Corresponding relationship between the identifier and the first identifier.

Optionally, the obtaining, by the access node, the first identifier according to the line identifier, includes: the access node encoding, according to the first coding rule, the line identifier, to obtain the first identifier.

Optionally, the method further includes:

Receiving, by the access node, a third message sent by the access controller, where the third message includes Internet Protocol IP address information, a first identifier, and a fourth message, where the IP address information is an IP address or an IP address prefix. The fourth message includes the IP address information;

Obtaining, by the access node, the line identifier according to the first identifier;

The access node sends the fourth message to the user according to the line identifier.

Optionally, the obtaining, by the access node, the line identifier according to the first identifier, the obtaining, by the access node, the line identifier according to the first identifier and the corresponding relationship, where the corresponding relationship includes Corresponding relationship between the first identifier and the line identifier.

Optionally, the obtaining, by the access node, the line identifier according to the first identifier includes: the access node encoding the first identifier according to a second coding rule, to obtain the line identifier.

In the method provided by the second aspect, the first identifier may be the same as the first identifier provided by the first aspect, and the line identifier may be the same as the line identifier provided by the first aspect.

In a third aspect, an access controller is provided, where the access controller includes:

a first receiving module, configured to receive a first message sent by an access node, where the first message includes First identifier

a first obtaining module, configured to obtain a line identifier according to the first identifier;

a second obtaining module, configured to obtain a second message according to the line identifier, where the second message includes the line identifier;

The first sending module is configured to send the second message to the relay server.

The access controller provided by the third aspect may perform the method provided by the first aspect or any of the possible implementations of the first aspect. The access controller provided by the third aspect may be the access controller in the method provided by the second aspect or the possible implementation manner of any of the second aspect,

Optionally, the first obtaining module is configured to obtain the line identifier according to the first identifier and the corresponding relationship, where the corresponding relationship includes a correspondence between the first identifier and the line identifier.

Optionally, the first obtaining module is specifically configured to code, according to the first encoding rule, the first identifier to obtain the line identifier.

Optionally, the first message further includes a first DHCP message, the second message is a second DHCP message, and the second obtaining module is specifically configured to: add the line identifier to the first DHCP message. Obtaining the second DHCP message, where the second DHCP message includes the line identifier.

Optionally, the first message further includes an RS message, where the second message is a first AAA message, and the second obtaining module is specifically configured to: generate, according to the line identifier and the RS message, the first message An AAA message, the first AAA message including the line identifier.

Optionally, the access controller further includes:

a second receiving module, configured to receive a fourth message sent by the relay server, where the fourth message includes a line identifier and Internet Protocol IP address information, where the IP address information is an IP address or an IP address prefix;

a third obtaining module, configured to obtain the first identifier according to the line identifier;

a fourth obtaining module, configured to obtain, according to the first identifier, a third message, where the third message includes the first identifier and the IP address information;

And a second sending module, configured to send the third message to the access node.

Optionally, the third obtaining module is configured to: obtain the first identifier according to the line identifier and the corresponding relationship, where the correspondence includes a correspondence between the first identifier and the line identifier.

Optionally, the third obtaining module is specifically configured to: code, according to the second encoding rule, the line identifier to obtain the first identifier.

Optionally, the fourth message is a third DHCP message, and the fourth obtaining module is specifically configured to:

Deleting the line identifier included in the third DHCP message, obtaining a fourth DHCP message, where the fourth DHCP message includes the IP address information;

Obtaining the third message according to the first identifier and the fourth DHCP message, where the third message further includes the fourth DHCP message.

Optionally, the fourth message is a second AAA message, where the fourth obtaining module is specifically configured to:

Obtaining, according to the second AAA message and the IP address information, a router advertisement RA message, where the RA message includes the IP address information;

Obtaining the third message according to the first identifier and the RA message, where the third message further includes the RA message.

In the method provided by the third aspect, the first identifier may be the same as the first identifier provided by the first aspect, and the line identifier may be the same as the line identifier provided by the first aspect.

A fourth aspect provides an access device, where the access device includes:

a first receiving module, configured to receive a second message sent by the user;

a first obtaining module, configured to obtain a line identifier according to the second message, where the second message includes the line identifier;

a second obtaining module, configured to obtain a first identifier according to the line identifier;

a third obtaining module, configured to obtain, according to the first identifier and the second message, a first message, where the first message includes the first identifier and the second message;

The first sending module is configured to send the first message to the access controller.

The access device provided by the fourth aspect may perform the method provided by the second aspect or any possible implementation manner of the second aspect. The access device provided by the fourth aspect may be any of the above possibilities The access node in the implementation.

Optionally, the second obtaining module is configured to: obtain the first identifier according to the line identifier and the corresponding relationship, where the corresponding relationship includes a correspondence between the line identifier and the first identifier.

Optionally, the second obtaining module is specifically configured to: code, according to the first encoding rule, the line identifier to obtain the first identifier.

Optionally, the access device further includes:

a second receiving module, configured to receive a third message sent by the access controller, where the third message includes Internet Protocol IP address information, a first identifier, and a fourth message, where the IP address information is an IP address or an IP address. An address prefix, where the fourth message includes the IP address information;

a fourth obtaining module, configured to obtain the line identifier according to the first identifier;

The second sending module is configured to send the fourth message to the user according to the line identifier.

Optionally, the fourth obtaining module is specifically configured to: obtain the line identifier according to the first identifier and the corresponding relationship, where the correspondence relationship includes a correspondence between the first identifier and the line identifier.

Optionally, the fourth obtaining module is specifically configured to: according to the second encoding rule, encode the first identifier to obtain the line identifier.

In the method provided by the fourth aspect, the first identifier may be the same as the first identifier provided by the first aspect, and the line identifier may be the same as the line identifier provided by the first aspect.

In a fifth aspect, an access controller is provided, the access controller comprising a communication interface, a processor, and a memory for storing the program. The processor reads a program in the memory and performs the following operations according to an instruction corresponding to the program:

Receiving, by the communication interface, a first message sent by an access node, where the first message includes a first identifier;

Obtaining a line identifier according to the first identifier;

Obtaining a second message according to the line identifier, where the second message includes the line identifier;

Sending the second message to the relay server through the communication interface.

Optionally, the processor included in the access controller may also perform the method provided by the first aspect or any of the possible implementation manners of the first aspect.

In a sixth aspect, an access device is provided, the access device comprising a communication interface, a processor, and a memory for storing the program. The processor reads a program in the memory and performs the following operations according to an instruction corresponding to the program:

Receiving, by the communication interface, a second message sent by the user;

Obtaining, according to the second message, a line identifier, where the second message includes the line identifier;

Obtaining a first identifier according to the line identifier;

Obtaining, according to the first identifier and the second message, a first message, where the first message includes the first identifier and the second message;

Sending the first message to the access controller over the communication interface.

Optionally, the processor may also perform the method provided by the second aspect or any of the possible implementations of the second aspect.

In a seventh aspect, an access system is provided, the access system comprising the access controller and the access device described above. The access controller is provided by the access controller provided by any one of the foregoing third aspect or the third aspect, or is provided by any one of the foregoing fifth or fifth possible implementation manners. Access controller. The access device may be the access device provided by any of the foregoing possible implementation manners of the fourth aspect or the fourth aspect, or the connectivity provided by any of the foregoing sixth or sixth possible implementation manners. Into the device.

DRAWINGS

1 is a schematic diagram of an access network;

2 is a schematic diagram of an access network according to an embodiment of the present invention;

FIG. 3 is a flowchart of Embodiment 1 of a message transmission method according to the present invention;

4 is a flowchart of Embodiment 2 of a message transmission method according to the present invention;

FIG. 5 is a signaling diagram of Embodiment 3 of a message transmission method according to the present invention;

FIG. 6 is a signaling diagram of Embodiment 4 of a message transmission method according to the present invention;

FIG. 7 is a flowchart of Embodiment 5 of a message transmission method according to the present invention;

FIG. 8 is a flowchart of Embodiment 6 of a message transmission method according to the present invention;

FIG. 9 is a signaling diagram of Embodiment 7 of a message transmission method according to the present invention;

FIG. 10 is a signaling diagram of Embodiment 8 of a message transmission method according to the present invention;

FIG. 11 is a schematic structural diagram of Embodiment 1 of an access controller according to the present invention;

FIG. 12 is a schematic structural diagram of Embodiment 1 of an access node according to the present invention;

FIG. 13 is a schematic structural diagram of Embodiment 2 of an access controller according to the present invention;

FIG. 14 is a schematic structural diagram of Embodiment 2 of an access node according to the present invention.

detailed description

For the sake of clarity of the embodiments of the present invention, the network architecture to which the embodiments of the present invention are applied, the line identifiers, tunnel identifiers, correspondences, and the like in the embodiments of the present invention are described in detail.

In the traditional access network architecture, the access node has a complete control plane and forwarding plane. During the message transmission process, the control faces the message to insert the option 82, and the forwarding is forwarded to the message. As shown in FIG. 1 , a passive optical network (PON) architecture is used as an example, and a customer premises equipment (CPE) or a cable modem (CM) communicates with a relay server through a message. The path transmits a message, which may be a Dynamic Host Configuration Protocol (DHCP) message, a router solicitation (RS), or a router advertisement (RA) message. Each access node (AN) included in the message propagation path, such as an optical network unit (ONU), a cable media converter (CMC), an optical line terminal (optical line) Termination, OLT) needs to support relay function. The control of each AN is processed in response to the received message, and the data of each AN is forwarded to the message processed by the control plane. In the traditional access network, when new services are constantly appearing, each access node needs to configure the control plane for each new service, and the operation and maintenance cost and complexity are high. To solve the above problem, the embodiment of the present invention introduces a Software Defined Network (SDN) technology in the access network architecture, that is, sets an access controller in the access network, as shown in FIG. 2 . The control plane and the data plane of the access node are separated, and the function of the control plane of the access node is concentrated. To the access controller. The access controller processes messages, such as control plane messages.

As shown in FIG. 2, in the access network provided by the embodiment of the present invention, an access controller is added between the OLT and the relay server. The control planes of the access nodes, such as the ONU, the CMC, or the OLT, are separated from the forwarding plane, and the functions of the control planes of the access nodes, such as DHCP messages, RS messages, or RA messages, are moved to the access controller. . There is no need to support the control plane function for each access node. The access controller may be an independent device or may be embedded in the OLT.

The line ID in the embodiment of the present invention may also be referred to as a circuit ID or an access loop identifier (ALI).

Specifically, the AN is a network node in a Digital Subscriber Line (DSL)/Ethernet. When the AN is derived from an Asynchronous Transfer Mode (ATM) DSL line, the format of the line identifier is: Access- Node-Identifier atm slot/port:vpi.vci; When AN is from an Ethernet DSL/Ethernet line, the format of the line identifier is: Access-Node-Identifier eth slot/port[:vlan-id]. The Access-Node-Identifier is an identifier of the AN, for example, a DSLAM. The slot/port is a chassis number, a rack number, a frame number, a slot number, and a sub-AN. A combination of one or more of a sub-slot number and a port number; vpi is a virtual path identifier; vci is a virtual channel identifier; "[]" in the format indicates optional, :vlan -id(virtual local area network identifier). The virtual path may be a virtual path on the DSL line; the virtual channel may be a virtual channel on the DSL line.

For a PON (passive optical network, PON) system, the line identifies the Line ID information of the ONU part and the Line ID information of the OLT part. The format of the line identifier is: when the ONU is from the ATM DSL line, it is Access-Node-Identifier atm slot1/port1/ONUID/slot2/port2:vpi.vci; when the ONU is from the Ethernet DSL/Ethernet line , for Access-Node-Identifier eth slot1/port1/ONUID/slot2/port2[:vlan-id]. The access-Node-Identifier is the identifier of the OLT, and the slot1/port1 is the chassis number, the rack number, the frame number, the slot number, and the sub-slot of the OLT. One or more combinations of -slot) and port number; slot2/port2 is the chassis number, rack number, frame number, and slot on the ONU. A combination of one or more of a number, a sub-slot number, and a port number. ONUID/slot2/port2: vpi.vci is the Line ID information of the ONU part, and the Access-Node-Identifier slot1/port1 is the Line ID information of the OLT part.

In the embodiment of the present invention, the first identifier includes at least one of a physical port number, a tunnel identifier, a MAC address of the access node, an IP address of the access node, and a tunnel identifier of the access node. The physical port number may be a preset value corresponding to the first sub-information, or may be a value obtained after being calculated according to the first sub-information. The first sub-information includes at least one of a rack number, a frame number, a slot number, and a physical port number of the access node. The tunnel identifier may be a preset value that is corresponding to the second sub-information, or may be a value obtained after being calculated according to the second sub-information. The second sub-information includes a virtual local area network ID (VID), a virtual path identifier (VPI), and a virtual channel identifier (VCI) of the access node. At least one of them.

Specifically, the access node and the access controller can pass through a virtual local area network (VLAN) tunnel, a virtual eXtensible local area network (VxLAN) tunnel, and a multi-protocol label switching (Multi- Protocol Label Switch, MPLS) Tunnel connection such as tunnel. Correspondingly, the tunnel identifier may be an identifier of the tunnel, for example, the tunnel identifier may be, for example, a VLAN ID, a VxLAN ID, or an MPLS label. In the embodiment of the present invention, the access node and the access controller transmit a message through a tunnel, such as a DHCP message, an RS message, or an RA message, and the access node and the access controller may also transmit an open flow through the tunnel (openflow). The message, the openflow message may carry a tunnel identifier and a message, such as a DHCP message, an RS message, or an RA message.

In the embodiment of the present invention, the correspondence relationship includes a correspondence between the first identifier and the line identifier, and the correspondence relationship may be a mapping relationship table or an encoding relationship table.

If the first identifier includes at least one of a tunnel identifier or a logical port number, and the line identifier includes the second sub-information, the corresponding relationship may be a correspondence relationship shown in Table 1 or Table 2. The corresponding relationship in Table 1 is a correspondence between the tunnel identifier and the second sub-information, or a correspondence between the logical port number and the second sub-information. The correspondence relationship in Table 2 is the correspondence between the tunnel identifier, the logical port number, and the second sub-information. A tunnel is established between the access node and the access controller, where the tunnel identifier is an identifier of a tunnel between the access node and the access controller or a tunnel identifier included in an openflow message. If the tunnel is not established between the access node and the access controller, the tunnel identifier may be a tunnel identifier included in the openflow message.

If the first identifier includes a physical port number, the line identifier includes the first sub-information, Then, the correspondence relationship may be a correspondence relationship shown in Table 3. The correspondence relationship in Table 3 is the correspondence between the physical port number and the first sub-information. The physical port number is used to identify a physical port on the user side of the access node, that is, a physical port on the access node that communicates with the user.

If the first identifier includes a media access control (MAC) address of the access node, and the line identifier includes a third sub-information, the corresponding relationship may be a correspondence relationship shown in Table 4. . The third sub-information includes at least one of an identity identifier and a cabinet number of the access node. The correspondence in Table 4 is the correspondence between the third sub-information and the MAC address of the access node.

If the first identifier includes the IP address of the access node, and the line identifier includes the third sub-information, the corresponding relationship may be a correspondence relationship shown in Table 5. The correspondence relationship in Table 5 is the correspondence between the third sub-information and the IP address of the access node.

If the first identifier includes the tunnel identifier, the line identifier includes at least one of a rack number, a frame number, a slot number, a physical port number, a VID, a VPI, a VCI, and an identity of the access node. And the corresponding relationship includes a correspondence between the identifier of the tunnel and the line identifier.

Table 1

Table 2

table 3

Physical port

Rack, Frame, Slot, Port

Table 4

MAC address

AN ID, Chassis or ONU ID

table 5

IP address

AN ID, Chassis or ONU ID

The access controller in the embodiment of the present invention may obtain the first identifier or the line identifier according to Tables 1 to 5 above. Specifically, the access controller may query the foregoing Table 1 to Table according to the obtained first identifier. One or more of the tables in 5, get the line identification. Alternatively, the access controller may query one or more of the foregoing Tables 1 to 5 according to the obtained line identifier to obtain the first identifier.

Optionally, the corresponding relationship in the embodiment of the present invention may include one or more of Table 1, Table 2, Table 3, Table 4, and Table 5. Accordingly, the line identifier may include the first child. One or more of the information, the second sub-information, and the third sub-information are not exemplified herein.

FIG. 3 is a flowchart of Embodiment 1 of a message transmission method according to the present invention. The executor of this embodiment is an access controller, and the method provided in this embodiment is an uplink message transmission method. The uplink message is a message sent by the access node to the access controller. Specifically, the method provided in the first embodiment includes:

301. The access controller receives a first message sent by an access node, where the first message includes a first identifier.

For example, the first message may be an openflow message or a tunnel message. The first message may also include a DHCP message, an Extensible Authentication Protocol (EAP) message, or an RS message from the user. The tunnel can be a VLAN tunnel, a VXLAN tunnel, or an MPLS tunnel.

302. The access controller obtains the line identifier according to the first identifier and the corresponding relationship, where the correspondence includes a correspondence between the first identifier and the line identifier.

For example, the access controller may pre-store a correspondence between the first identifier and the line identifier. The access controller queries the corresponding relationship by using the first identifier to obtain the line identifier.

Optionally, 302 may be replaced by: the access controller encoding the first identifier according to an encoding rule to obtain the line identifier. The encoding rule may be an encoding method for encoding the first identifier into the line identifier, or the encoding rule may be an encoding method for encoding the first identifier into the line identifier. Index value.

303. The access controller obtains a second message according to the line identifier, where the second message includes the line identifier.

For example, if the first message further includes a first DHCP message, and the second message is a second DHCP message, the access controller obtains the second message according to the line identifier, including: the access The controller adds the line identifier to the first DHCP message to obtain the second DHCP message, where the second DHCP message includes the line identifier.

If the first message further includes an RS message, and the second control plane message is the first AAA message, the access controller obtains the second control plane message according to the line identifier, and includes: the access control The first AAA message is generated according to the line identifier and the RS message, and the first AAA message includes the line identifier.

If the first message further includes a third DHCP message, and the second message is a second AAA message, the access controller obtains the second message according to the line identifier, where the access controller is configured according to the And obtaining, by the line identifier and the third DHCP message, the second AAA message, where the second AAA message includes the line identifier. The second AAA message further includes data and/or information included in the third DHCP message.

304. The access controller sends the second message to a relay server.

For example, the relay server is a DHCP server or an AAA server with an IP address allocation function.

According to the message transmission method provided by the embodiment of the present invention, after receiving the first message sent by the access node, the access controller determines the line identifier according to the first identifier included in the first message, and then adds the line identifier to the first A second message is obtained in the message, and the second message is sent to the relay server. In the process, the access node forwards the first message to the access controller, and the access controller inserts the Line ID into the first message, so that the access node does not need to support the relay function, so that the access node is not required to be selected. 82 performs maintenance, thereby reducing the maintenance amount and maintenance complexity of the option 82 of the access node. At the same time, the access controller may determine the line identifier according to the first identifier included in the first message, so as to implement the purpose of determining the Line ID in the process of receiving the uplink message by the access controller.

FIG. 4 is a flowchart of Embodiment 2 of a message transmission method according to the present invention. The executor of this embodiment is an access node, and the method provided in this embodiment is an uplink message transmission method. The uplink message is a message sent by the access node to an access controller. The method provided in the second embodiment includes:

401. The access node receives the second message sent by the user, and obtains a line identifier.

For example, the second message may be from a client device or cable modem employed by the user. The access node may determine the line identifier according to the port that receives the second message, and the specific method is not described herein again.

402. The access node obtains the first identifier according to the line identifier.

For example, the access node may store a correspondence between the line identifier and the first identifier. relationship. The access node queries the corresponding relationship by using the line identifier to obtain the first identifier.

Optionally, 402 is replaced by: the access node encoding the line identifier according to an encoding rule, to obtain the first identifier. The encoding rule may be an encoding method for encoding the line identifier into the first identifier, or the encoding rule may be an encoding method for encoding the line identifier into the first identifier. Index value.

403. The access node obtains a first message according to the first identifier and the second message, where the first message includes the first identifier and the second message.

The first message is an openflow message or a tunnel message. The first message does not include the line identifier.

404. The access node sends the first message to an access controller.

In the message transmission method provided by the embodiment of the present invention, the access node sends the first message including the second message and the first identifier to the access controller. The access node does not need to support the relay function. For example, maintenance of the option 82 is not required, which helps to reduce maintenance complexity.

FIG. 5 is a signaling diagram of Embodiment 3 of a message transmission method according to the present invention. In this embodiment, the relay server is a DHCP server, and the first message sent by the access node to the access controller is an openflow message. The method provided in the third embodiment includes:

501. The access node receives a first DHCP message sent by the client device.

The access node obtains a line identifier by using a line where the first DHCP message is received. The line identifier includes the first sub information, the second sub information, and the third sub information.

502. The access node obtains the physical port number, the tunnel identifier, a MAC address of the access node, and an IP address of the access node.

The access node stores a correspondence. The correspondence may be one or more of the correspondences shown in Tables 1 to 5 above. The correspondence relationship in the third embodiment includes the correspondences shown in Tables 1 to 5. The present invention is not limited thereto, and in other feasible embodiments, only some of the entries in Tables 1 to 5 may be set.

For example, the obtaining, by the access node, the first identifier includes: the access node obtains a line identifier by using a line where the first DHCP message is received; and the access node is configured according to the corresponding And the first sub-information, the second sub-information, and the third sub-information, obtaining the physical port number, the tunnel identifier, a MAC address of the access node, and the access node IP address.

Optionally, the access node may further obtain the first identifier according to the coding rule and the line identifier, which is not illustrated herein.

503. The access node obtains an openflow message according to the first DHCP message, the physical port number, the tunnel identifier, a MAC address of the access node, and an IP address of the access node.

The openflow message includes the first DHCP message, the physical port number, the tunnel identifier, a MAC address of the access node, and an IP address of the access node. If the access node and the access controller are connected through a tunnel, the access node may further encapsulate the openflow message and send a tunnel encapsulated openflow message to the access controller.

504. The access node sends the openflow message to the access controller.

505. The access controller obtains the first sub information, the second sub information, and the third sub information.

The access controller may store the corresponding relationship. The correspondence stored by the access controller is the same as the corresponding relationship stored by the access node.

For example, the access controller may query the corresponding relationship by using the physical port number, the tunnel identifier, the MAC address of the access node, and the IP address of the access node, to obtain the first Sub information, the second sub information, and the third sub information.

506. The access controller adds the first sub information, the second sub information, and the third sub information to the first DHCP message to obtain a second DHCP message.

The second DHCP message includes the first sub information, the second sub information, and the third sub information.

507. The access controller sends the second DHCP message to a DHCP server.

508. The DHCP server allocates an IP address or an IP address prefix according to the second DHCP message.

FIG. 6 is a signaling diagram of Embodiment 4 of a message transmission method according to the present invention. In this embodiment, the relay server is an AAA server, and the first message sent by the access node to the access controller is an openflow message encapsulated by the tunnel. The method provided in the fourth embodiment includes:

601. The access node receives an RS message sent by a client device.

The access node obtains the line identifier by using the line where the RS message is received. The line identifier includes the first sub information, the second sub information, and the third sub information.

602. The access node obtains the physical port number, the tunnel identifier, a MAC address of the access node, and an IP address of the access node.

The access node stores the correspondence. The correspondence may be one or more of the correspondences shown in Tables 1 to 5 above. The correspondence relationship in the third embodiment includes the correspondences shown in Tables 1 to 5. The present invention is not limited thereto, and in other feasible embodiments, only some of the entries in Tables 1 to 5 may be set.

For example, the obtaining, by the access node, the first identifier includes: the access node obtains a line identifier by using a line where the first DHCP message is received; and the access node is configured according to the correspondence, the first The sub-information, the second sub-information, and the third sub-information obtain the physical port number, the tunnel identifier, a MAC address of the access node, and an IP address of the access node.

603. The access node obtains an openflow message encapsulated by the tunnel according to the RS message, the physical port number, the tunnel identifier, a MAC address of the access node, and an IP address of the access node.

The openflow message includes the RS message, the physical port number, the tunnel identifier, a MAC address of the access node, and an IP address of the access node. The access node tunnel encapsulates the openflow message to obtain an openflow message after tunnel encapsulation.

604. The access node sends the tunnel encapsulated openflow message to the access controller.

605. The access controller obtains the first sub information, the second sub information, and the third sub information.

For example, the access controller may query the corresponding relationship by using the physical port number, the tunnel identifier, the MAC address of the access node, and the IP address of the access node, and obtain the location. The first sub-information, the second sub-information, and the third sub-information are described.

606. The access controller generates an AAA message according to the first sub information, the second sub information, the third sub information, and the RS message.

The AAA message includes the first sub information, the second sub information, and the third sub information.

607. The access controller sends the AAA message to an AAA server.

608. The AAA message allocates an IP address or an IP address prefix according to the AAA message.

Optionally, the RS messages in 601 to 608 can also be replaced with DHCP messages, and the alternate embodiment will not be described in detail herein.

FIG. 7 is a flowchart of Embodiment 5 of a message transmission method according to the present invention. The executor of this embodiment is an access controller, and the method provided in this embodiment is a downlink message transmission method. The downlink message is a message sent by the access controller to an access node. Specifically, the method provided in the fifth embodiment includes:

701. The access controller receives a first message sent by the relay server, where the first message includes a line identifier and an IP address information, where the IP address information is an IP address or an IP address prefix.

The IP address information is IP address information allocated by the relay server.

702. The access controller obtains the first identifier according to the line identifier.

For example, the access controller may pre-store a correspondence between the first identifier and the line identifier. The access controller uses the line identifier to query the corresponding relationship to obtain the first identifier.

Optionally, the access controller encodes the line identifier according to an encoding rule to obtain the first identifier. The encoding rule adopted by the access controller is the same as the encoding rule in the second embodiment.

703. The access controller obtains a second message according to the first identifier, where the second message includes the first identifier and the IP address information.

The second message does not include the line identifier.

For example, the first message is a first DHCP message, and the access controller obtains the second message according to the first identifier, where the access controller deletes the a line identifier, the second DHCP message is obtained, the second DHCP message includes the IP address information, and the access controller obtains the second according to the first identifier and the second DHCP message The message, the second message further includes the second DHCP message.

Or the first message is an AAA message, and the access controller obtains the second message according to the first identifier, where the access controller obtains the RA according to the AAA message and the IP address information. The message that the RA message includes the IP address information; the access controller obtains the second message according to the first identifier and the RA message, and the second message further includes the RA message.

The second message is an openflow message or an openflow message after the tunnel is sealed.

704. The access controller sends the second message to an access node.

In the message transmission method provided by the embodiment of the present invention, when the access controller sends a downlink message to the access node, the access controller determines the first identifier according to the line identifier, and then removes the line identifier in the first message, and according to The first identifier and the first message with the line identifier removed remove the second message. In this way, the access node does not need to support the relay function, which helps to reduce maintenance complexity.

FIG. 8 is a flowchart of Embodiment 6 of a message transmission method according to the present invention. The executor of this embodiment is an access node, and the method provided in this embodiment is a downlink message transmission method. The downlink message is a message sent by the access node to an access controller. The method provided in the sixth embodiment includes:

801. The access node receives a second message sent by the access controller, where the second message includes the IP address information and the first identifier.

The IP address information is IP address information that the user is assigned. The second message further includes an RA message or a DHCP message, and the RA message and the DHCP message do not include a line identifier and the first identifier. If the relay server is a DHCP server, the second message further includes a DHCP message. If the relay server is an AAA server, the second message further includes an RA message or a DHCP message.

802. The access node obtains a line identifier according to the first identifier.

For example, the access node may store a correspondence. The correspondence may be one or more correspondences in Tables 1 to 5.

For example, the access node queries the corresponding relationship by using the first identifier to obtain the line identifier.

Optionally, the access node encodes the first identifier according to an encoding rule to obtain the line identifier. The coding rules adopted by the access node may be the same as the coding rules used in the first embodiment.

803. The access node obtains a first message according to the second message, where the first message does not include the first identifier, and the first message includes the IP address information.

The first message may be an RA message or a DHCP message that does not include the line identifier and the first identifier.

804. The access node sends the first message to a user according to the line identifier.

According to the message transmission method provided by the embodiment of the present invention, the access node determines the line identifier according to the first identifier included in the second message, and sends a first message that does not include the first identifier to the user according to the line identifier. In this way, the access node does not need to support the relay function, which helps to reduce maintenance complexity.

FIG. 9 is a signaling diagram of Embodiment 7 of a message transmission method according to the present invention. In this embodiment, the relay server is specifically a DHCP server, and the access controller sends an openflow message to the access node. The method provided in the seventh embodiment includes:

901. The access controller receives the first DHCP message sent by the DHCP server.

Specifically, the first DHCP message includes a line identifier and IP address information. The IP address information is an IP address or an IP address prefix assigned by the DHCP server to the user. The line identifier includes the first sub information, the second sub information, and the third sub information.

902. The access controller obtains the physical port number, the tunnel identifier, and a MAC address of the access node according to the first DHCP message.

The access controller stores a correspondence. The correspondence may be one or more of the correspondences shown in Tables 1 to 5 above. The correspondence relationship in the third embodiment includes the correspondences shown in Tables 1 to 5. The present invention is not limited thereto, and in other feasible embodiments, only some of the entries in Tables 1 to 5 may be set.

For example, the obtaining, by the access controller, the first identifier includes: using, by the access controller, the first sub information, the second sub information, and the third sub And querying the corresponding relationship to obtain the physical port number, the tunnel identifier, and a MAC address of the access node.

903. The access controller deletes a line identifier in the first DHCP message, and obtains a second DHCP message.

The second DHCP message does not include the first sub-information, the second sub-information, and the The third sub-information.

904. The access controller obtains an openflow message according to the second DHCP message, the physical port number, the tunnel identifier, and a MAC address of the access node.

The openflow message includes the second DHCP message, the physical port number, the tunnel identifier, and a MAC address of the access node.

905. The access controller sends the openflow message to an access node.

906. The access node determines a line identifier according to the physical port number, the tunnel identifier, and a MAC address of the access node.

The corresponding relationship stored by the access node is the same as the corresponding relationship stored by the access controller. The access node obtains the first sub information, the second sub information, and the third according to the correspondence, the physical port number, the tunnel identifier, and the MAC address of the access node. Sub-information.

907. The access node sends the second DHCP message to a user according to the line identifier.

The second DHCP message includes IP address information allocated by the DHCP server for the user.

FIG. 10 is a signaling diagram of Embodiment 8 of a message transmission method according to the present invention. In this embodiment, the relay server is specifically an AAA server, and the access controller sends the tunnel encapsulated openflow message to the access node. The method provided in the eighth embodiment includes:

1001. The access controller receives an AAA message sent by the AAA server.

Specifically, the AAA message includes a line identifier and IP address information. The IP address information is an IP address or an IP address prefix assigned by the AAA server to the user. The line identifier includes the first sub information, the second sub information, and the third sub information.

1002. The access controller obtains the physical port number, the tunnel identifier, and a MAC address of the access node according to the AAA message.

For example, the obtaining, by the access controller, the first identifier includes: using the access controller Receiving the first sub-information, the second sub-information, and the third sub-information included in the AAA message, querying the corresponding relationship, and obtaining the physical port number, the tunnel identifier, and the access The MAC address of the node.

1003. The access controller obtains an RA message according to the AAA message.

The RA message does not include the first sub information, the second sub information, and the third sub information. The RA message includes the IP address information allocated by the AAA server to a user.

1004. The access controller obtains a tunnel encapsulated openflow message according to the RA message, the physical port number, the tunnel identifier, and a MAC address of the access node.

The openflow message includes the RA message, the physical port number, the tunnel identifier, and a MAC address of the access node. The access controller may perform tunnel encapsulation on the openflow message to obtain an openflow message after the tunnel encapsulation.

1005. The access controller sends the tunnel encapsulated openflow message to an access node.

1006. The access node determines a line identifier according to the physical port number, the tunnel identifier, and a MAC address of the access node.

1007. The access node sends an RA message to the user according to the line identifier.

FIG. 11 is a schematic structural diagram of Embodiment 1 of an access controller according to the present invention. The access controller provided in this embodiment may perform the method provided in the embodiment corresponding to FIG. 3. The access controller provided in this embodiment may be the access controller in any one of the embodiments corresponding to FIG. 5 to FIG. For the specific content of the message or the identifier in this embodiment, reference may be made to the corresponding content in the embodiment corresponding to FIG. 3 and FIG. 5 to FIG. 10, and details are not described herein again. The access controller provided in this embodiment includes:

The first receiving module 11 is configured to receive a first message sent by the access node, where the first message includes a first identifier.

The first obtaining module 12 is configured to obtain a line identifier according to the first identifier.

The second obtaining module 13 is configured to obtain a second message according to the line identifier, where the second message includes the line identifier;

The first sending module 14 is configured to send the second message to the relay server.

The access controller provided by the embodiment of the present invention, after receiving the uplink message, the access controller determines the line identifier according to the first identifier included in the first message, after receiving the first message sent by the access node, Obtaining a second message according to the line identifier. The access controller sends the second message to the relay server. In the process, the access node forwards the first message to the access controller, and the access controller adds a Line ID to the second message, so that the access node does not need to support the relay function, thereby eliminating the need for the access node. Option 82 performs maintenance to reduce the maintenance and maintenance complexity of option82 on the access node. At the same time, the access controller may determine the line identifier according to the first identifier included in the first message, so as to implement the purpose of determining the Line ID in the process of receiving the uplink message by the access controller.

The first identifier is the same as the first identifier mentioned in the foregoing embodiment, and the line identifier is the same as the line identifier mentioned in the foregoing embodiment, and details are not described herein again.

For example, the first obtaining module 12 is specifically configured to obtain the line identifier according to the first identifier and the corresponding relationship, where the corresponding relationship includes a correspondence between the first identifier and the line identifier. Or the first obtaining module 12 is specifically configured to code the first identifier according to the first encoding rule to obtain the line identifier.

For example, the first message further includes a first dynamic host configuration protocol DHCP message, the second message is a second DHCP message, and the second obtaining module 13 is specifically configured to: add the line identifier to the The first DHCP message obtains the second DHCP message, and the second DHCP message includes the line identifier.

For example, the first message further includes a route request RS message, the second message is a first authentication, authorization, and accounting AAA message, and the second obtaining module 13 is specifically configured to: according to the line identifier and the The RS message is generated, and the first AAA message is generated, where the first AAA message includes the line identifier.

Optionally, the access controller further includes:

The second receiving module 15 is configured to receive a fourth message sent by the relay server, where the fourth message includes a line identifier and Internet Protocol IP address information, where the IP address information is an IP address or an IP address prefix;

a third obtaining module 16, configured to obtain the first identifier according to the line identifier;

The fourth obtaining module 17 is configured to obtain, according to the first identifier, a third message, where the third message includes the first identifier and the IP address information;

The second sending module 18 is configured to send the third message to the access node.

For example, the third obtaining module 16 is specifically configured to obtain the first identifier according to the line identifier and the corresponding relationship, where the corresponding relationship includes a correspondence between the first identifier and the line identifier. Alternatively, the third obtaining module 16 is specifically configured to code the line identifier according to the second encoding rule to obtain the first identifier.

For example, the fourth message is a third DHCP message, and the fourth obtaining module 17 is specifically configured to: delete the line identifier included in the third DHCP message, obtain a fourth DHCP message, and the fourth DHCP The message includes the IP address information, and the third message is obtained according to the first identifier and the fourth DHCP message, and the third message further includes the fourth DHCP message.

For example, the fourth message is a second AAA message, and the fourth obtaining module 17 is specifically configured to: obtain, according to the second AAA message and the IP address information, a router advertisement RA message, where the RA message includes The third address message is obtained according to the first identifier and the RA message, and the third message further includes the RA message.

FIG. 12 is a schematic structural diagram of Embodiment 1 of an access device according to the present invention. The access device provided by this embodiment may perform the method provided by the embodiment corresponding to FIG. 4. The access device provided in this embodiment may be an access node in any one of the embodiments corresponding to FIG. 5 to FIG. For the specific content of the message or the identifier in this embodiment, reference may be made to the corresponding content in the embodiment corresponding to FIG. 4 and FIG. 5 to FIG. 10, and details are not described herein again. The access device provided in this embodiment includes:

The first receiving module 21 is configured to receive a second message sent by the user.

The first obtaining module 20 is configured to obtain a line identifier according to the second message, where the line identifier corresponds to the second message. The first obtaining module 20 may obtain the line identifier according to the line where the received second message is located.

a second obtaining module 22, configured to obtain a first identifier according to the line identifier;

The third obtaining module 23 is configured to obtain, according to the first identifier and the second message, a first message, where the first message includes the first identifier and the second message;

The first sending module 24 is configured to send the first message to the access controller.

In the process of sending an uplink message, the access device provided by the embodiment of the present invention is connected to the access device. After receiving the second message of the client device, obtaining the first identifier according to the line identifier corresponding to the second message. The access device obtains the first message according to the first identifier and the second message. The access device wants the access controller to send the first message. The access device does not need to support the relay function, and the maintenance of the option 82 is not required, thereby reducing the maintenance and maintenance complexity of the option 82 of the access device.

For example, the second obtaining module 22 is specifically configured to obtain the first identifier according to the line identifier and the corresponding relationship, where the corresponding relationship includes a correspondence between the line identifier and the first identifier. Alternatively, the second obtaining module 22 is specifically configured to code the line identifier according to the first encoding rule to obtain the first identifier.

Optionally, the access device further includes:

The second receiving module 25 is configured to receive a third message sent by the access controller, where the third message includes Internet Protocol IP address information, a first identifier, and a fourth message, where the IP address information is an IP address or An IP address prefix, where the fourth message includes the IP address information;

a fourth obtaining module 26, configured to obtain the line identifier according to the first identifier;

The second sending module 27 is configured to send the fourth message to the user according to the line identifier.

For example, the fourth obtaining module 26 is specifically configured to obtain the line identifier according to the first identifier and the corresponding relationship, where the corresponding relationship includes a correspondence between the first identifier and the line identifier. Alternatively, the fourth obtaining module 26 is specifically configured to code the first identifier according to the second encoding rule to obtain the line identifier.

FIG. 13 is a schematic structural diagram of Embodiment 2 of an access controller according to the present invention. The access controller provided in this embodiment may perform the method provided in the embodiment corresponding to FIG. 3. The access controller provided in this embodiment may be the access controller in any of the embodiments corresponding to FIG. 5 to FIG. For the specific content of the message or the identifier in this embodiment, reference may be made to the corresponding content in the embodiment corresponding to FIG. 3 and FIG. 5 to FIG. 11 , and details are not described herein again.

The access controller provided in this embodiment includes a communication interface, a processor 31, and a memory 32 for storing programs. The communication interface, processor 31 and memory 32 are connected by a communication bus 33. The processor 31 reads a program in the memory 32 and performs the following operations according to an instruction corresponding to the program:

Receiving, by the communication interface, a first message sent by an access node, where the first message includes First identifier

Obtaining a line identifier according to the first identifier;

The communication interface having the receiving function may be the receiving port 34 in FIG. 13, and the communication interface having the transmitting function may be the transmitting port 35 in FIG. The processor included in the access controller may further perform the method provided by any one of the embodiments in FIG. 3 and FIG. 5 to FIG. 10, and details are not described herein again.

FIG. 14 is a schematic structural diagram of Embodiment 2 of an access device according to the present invention. The access device provided by this embodiment may perform the method provided by the embodiment corresponding to FIG. 4. The access device provided in this embodiment may be the access device in any of the embodiments corresponding to FIG. 5 to FIG. 10 and FIG. For the specific content of the message or the identifier in this embodiment, reference may be made to the corresponding content in the embodiment corresponding to FIG. 3, FIG. 5 to FIG. 10, and FIG. 11, and details are not described herein again.

The embodiment provides an access device communication interface, a processor 41, and a memory 42 for storing programs. The communication interface, the processor 41 and the memory 42 are connectable via a communication bus 43. The processor 41 reads a program in the memory 42 and performs the following operations according to an instruction corresponding to the program:

Receiving, by the communication interface, a second message sent by the user;

Obtaining a first identifier according to the line identifier;

The communication interface having the receiving function may be the receiving port 44 in FIG. 14, and the communication interface having the transmitting function may be the transmitting port 45 in FIG. The processor included in the access device may further perform the method provided by any one of the embodiments in FIG. 3 and FIG. 5 to FIG. 10, and details are not described herein again.

The embodiment of the present invention further provides an access system, and the access system may include any one of the access controllers provided in the embodiment corresponding to FIG. 11 and any one of the access devices provided in the embodiment corresponding to FIG. 12 . Alternatively, the access system may include any one of the access control provided by the embodiment corresponding to FIG. And any of the access devices provided by the embodiment corresponding to FIG. 14. I will not repeat them here.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the embodiments of the present invention, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some of the technical features. Modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the invention.

Claims

A message transmission method, characterized in that the method comprises:

Receiving, by the access controller, a first message sent by the access node, where the first message includes a first identifier;

The access controller obtains a line identifier according to the first identifier;

The access controller obtains a second message according to the line identifier, where the second message includes the line identifier;

The access controller sends the second message to a relay server.
The method according to claim 1, wherein the obtaining, by the access controller, the line identifier according to the first identifier comprises:

The access controller obtains the line identifier according to the first identifier and the line identifier corresponding relationship, where the correspondence relationship includes a correspondence between the first identifier and the line identifier; or

And the access controller encodes the first identifier according to the first coding rule to obtain the line identifier.
The method according to claim 1 or 2, wherein the first message further comprises a first dynamic host configuration protocol DHCP message, the second message is a second DHCP message, and the access controller is The line identifier is obtained, and the second message is obtained:

And the access controller adds the line identifier to the first DHCP message to obtain the second DHCP message, where the second DHCP message includes the line identifier.
The method according to claim 1 or 2, wherein the first message further comprises a routing request RS message or a DHCP message, and the second message is a first authentication, authorization, and charging AAA message, and the The controller obtains the second message according to the line identifier, including:

The access controller generates the first AAA message according to the line identifier and the RS message, where the first AAA message includes the line identifier.
The method according to any one of claims 1 to 4, wherein the method further comprises:

The access controller receives a fourth message sent by the relay server, where the fourth message includes a line identifier and Internet Protocol IP address information, where the IP address information is an IP address or an IP address prefix;

The access controller obtains the first identifier according to the line identifier;

The access controller obtains a third message according to the first identifier, where the third message includes The first identifier and the IP address information;

The access controller sends the third message to the access node.
The method according to claim 5, wherein the obtaining, by the access controller, the first identifier according to the line identifier comprises:

The access controller obtains the first identifier according to the line identifier and the corresponding relationship, where the correspondence relationship includes a correspondence between the first identifier and the line identifier; or

And the access controller encodes the line identifier according to the second coding rule, to obtain the first identifier.
The method according to claim 5 or 6, wherein the fourth message is a third DHCP message, and the access controller obtains the third message according to the first identifier, including:

The access controller deletes the line identifier included in the third DHCP message, and obtains a fourth DHCP message, where the fourth DHCP message includes the IP address information;

The access controller obtains the third message according to the first identifier and the fourth DHCP message, and the third message further includes the fourth DHCP message.
The method according to claim 5 or 6, wherein the fourth message is a second AAA message, and the access controller obtains the third message according to the first identifier, including:

And obtaining, by the access controller, a router advertisement RA message according to the second AAA message and the IP address information, where the RA message includes the IP address information;

The access controller obtains the third message according to the first identifier and the RA message, and the third message further includes the RA message.
A message transmission method, characterized in that the method comprises:

The access node receives the second message sent by the user;

The access node obtains a line identifier according to the second message, where the second message includes the line identifier;

The access node obtains the first identifier according to the line identifier;

Obtaining, by the access node, the first message according to the first identifier and the second message, where the first message includes the first identifier and the second message;

The access node sends the first message to an access controller.
The method of claim 9 wherein said access node is in accordance with said The line identification, obtaining the first identification includes:

The access node obtains the first identifier according to the line identifier and the corresponding relationship, where the corresponding relationship includes a correspondence between the line identifier and the first identifier; or

And the access node encodes the line identifier according to the first coding rule, to obtain the first identifier.
The method according to claim 9 or 10, wherein the method further comprises:

Receiving, by the access node, a third message sent by the access controller, where the third message includes Internet Protocol IP address information, a first identifier, and a fourth message, where the IP address information is an IP address or an IP address prefix. The fourth message includes the IP address information;

Obtaining, by the access node, the line identifier according to the first identifier;

The access node sends the fourth message to the user according to the line identifier.
The method according to claim 11, wherein the obtaining, by the access node, the line identifier according to the first identifier comprises:

The access node obtains the line identifier according to the first identifier and the corresponding relationship, where the corresponding relationship includes a correspondence between the first identifier and the line identifier; or

And the access node encodes the first identifier according to the second coding rule, to obtain the line identifier.
An access controller, where the access controller includes:

a first receiving module, configured to receive a first message sent by an access node, where the first message includes a first identifier;

a first obtaining module, configured to obtain a line identifier according to the first identifier;

a second obtaining module, configured to obtain a second message according to the line identifier, where the second message includes the line identifier;

The first sending module is configured to send the second message to the relay server.
The access controller according to claim 13, wherein the first obtaining module is specifically configured to:

Obtaining, according to the first identifier and the corresponding relationship, the line identifier, where the correspondence includes a correspondence between the first identifier and the line identifier; or

And encoding, according to the first coding rule, the first identifier to obtain the line identifier.
The access controller according to claim 13 or 14, wherein the first message further comprises a first dynamic host configuration protocol DHCP message, the second message is a second DHCP message, and the second obtaining The module is specifically used to:

And adding the line identifier to the first DHCP message to obtain the second DHCP message, where the second DHCP message includes the line identifier.
The access controller according to claim 13 or 14, wherein the first message further includes a routing request RS message, and the second message is a first authentication, authorization, and charging AAA message, where the The second acquisition module is specifically used to:

And generating, according to the line identifier and the RS message, the first AAA message, where the first AAA message includes the line identifier.
The access controller according to any one of claims 13 to 16, wherein the access controller further comprises:

a second receiving module, configured to receive a fourth message sent by the relay server, where the fourth message includes a line identifier and Internet Protocol IP address information, where the IP address information is an IP address or an IP address prefix;

a third obtaining module, configured to obtain the first identifier according to the line identifier;

a fourth obtaining module, configured to obtain, according to the first identifier, a third message, where the third message includes the first identifier and the IP address information;

And a second sending module, configured to send the third message to the access node.
The access controller according to claim 17, wherein the third obtaining module is specifically configured to:

Obtaining the first identifier according to the line identifier and the corresponding relationship, where the correspondence relationship includes a correspondence between the first identifier and the line identifier; or

And encoding, according to the second coding rule, the line identifier to obtain the first identifier.
The access controller according to claim 17 or 18, wherein the fourth message is a third DHCP message, and the fourth obtaining module is specifically configured to:

Deleting the line identifier included in the third DHCP message, obtaining a fourth DHCP message, where the fourth DHCP message includes the IP address information;

Obtaining the third message according to the first identifier and the fourth DHCP message, where the third message further includes the fourth DHCP message.
The access controller according to claim 17 or 18, wherein the fourth message is a second AAA message, and the fourth obtaining module is specifically configured to:

Obtaining, according to the second AAA message and the IP address information, a router advertisement RA message, where the RA message includes the IP address information;

Obtaining the third message according to the first identifier and the RA message, where the third message further includes the RA message.
An access device, characterized in that the access device comprises:

a first receiving module, configured to receive a second message sent by the user;

a first obtaining module, configured to obtain a line identifier according to the second message, where the second message includes the line identifier;

a second obtaining module, configured to obtain a first identifier according to the line identifier;

a third obtaining module, configured to obtain, according to the first identifier and the second message, a first message, where the first message includes the first identifier and the second message;

The first sending module is configured to send the first message to the access controller.
The access device according to claim 21, wherein the second obtaining module is specifically configured to:

Obtaining, according to the line identifier and the corresponding relationship, the first identifier, where the correspondence includes a correspondence between the line identifier and the first identifier; or

And encoding, according to the first coding rule, the line identifier to obtain the first identifier.
The access device according to claim 21 or 22, wherein the access device further comprises:

a second receiving module, configured to receive a third message sent by the access controller, where the third message includes Internet Protocol IP address information, a first identifier, and a fourth message, where the IP address information is an IP address or an IP address. An address prefix, where the fourth message includes the IP address information;

a fourth obtaining module, configured to obtain the line identifier according to the first identifier;

The second sending module is configured to send the fourth message to the user according to the line identifier.
The access device according to claim 23, wherein the fourth obtaining module is specifically configured to:

Obtaining, according to the first identifier and the corresponding relationship, the line identifier, where the correspondence relationship includes a correspondence between the first identifier and the line identifier; or

And encoding, according to the second coding rule, the first identifier to obtain the line identifier.