CN111182016A - PPPoE dialing message transmission method and device - Google Patents
PPPoE dialing message transmission method and device Download PDFInfo
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- CN111182016A CN111182016A CN201811340997.XA CN201811340997A CN111182016A CN 111182016 A CN111182016 A CN 111182016A CN 201811340997 A CN201811340997 A CN 201811340997A CN 111182016 A CN111182016 A CN 111182016A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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Abstract
The invention discloses a PPPoE dialing message transmission method and a device, wherein the method comprises the following steps: a first network device receives a point-to-point communication protocol PPPoE message based on the Ethernet; if the length of the PPPoE message is smaller than or equal to a preset message threshold value, the first network equipment encapsulates the PPPoE message into the NVGRE tunnel message; and the first network equipment determines the NVGRE tunnel corresponding to the TNI, and sends the NVGRE tunnel message to second network equipment corresponding to the destination IP address through the NVGRE tunnel.
Description
Technical Field
The invention relates to the field of network transmission, in particular to a PPPoE dialing message transmission method and a PPPoE dialing message transmission device.
Background
A Point-to-Point Protocol over Ethernet (PPPoE) based on Ethernet is a Protocol for transmitting data over Ethernet according to a Point-to-Point Protocol, which can provide good access control and charging functions. However, the PPPoE protocol belongs to a two-layer protocol, and therefore, only packet transmission can be performed based on a two-layer network, and three-layer forwarding cannot be performed, and a server thereof can only be deployed in a two-layer network. With the rise of Software Defined Networking (SDN) technology, centralized management and control gradually become the mainstream, and in an SDN scenario, some network devices bearing a control function, such as a PPPoE server, are changed from the original two-layer network deployment to the cluster deployment of a three-layer network. However, the PPPoE protocol belongs to a two-layer protocol, and does not support three-layer forwarding, so in the prior art, PPPoE messages cannot be transmitted between a two-layer network device and a three-layer network device, for example, between a client in a one-layer network and a PPPoE server in a three-layer network.
Therefore, in the prior art, in an SDN scene, it is an urgent problem to be solved that PPPoE packet transmission cannot be performed between a two-layer network device and a three-layer network device.
Disclosure of Invention
The embodiment of the application provides a PPPoE message transmission method and a PPPoE message transmission device, and solves the problem that in the prior art, in an SDN scene, PPPoE message transmission cannot be performed between a two-layer network device and a three-layer network device, which is an urgent need to be solved.
The embodiment of the invention provides a PPPoE message transmission method, which comprises the following steps:
a first network device receives a point-to-point communication protocol PPPoE message based on the Ethernet;
if the length of the PPPoE message is smaller than or equal to a preset message threshold value, the first network equipment encapsulates the PPPoE message into the NVGRE tunnel message; the NVGRE tunnel message comprises a destination IP address of the NVGRE tunnel message and a Tenant Network Identifier (TNI), wherein the TNI corresponds to one NVGRE tunnel;
and the first network equipment determines the NVGRE tunnel corresponding to the TNI, and sends the NVGRE tunnel message to second network equipment corresponding to the destination IP address through the NVGRE tunnel.
Optionally, the method further includes:
if the length of the PPPoE message is greater than the preset message threshold, the first network device divides the PPPoE message into N PPPoE sub-messages, and encapsulates each PPPoE sub-message into the NVGRE tunnel message; wherein the length of each PPPoE sub-message is less than or equal to the preset message threshold; n is an integer greater than 1.
Optionally, the method includes:
if the first network device is a network virtualization edge NVE device, the second network device is a PPPoE server cluster; and if the first network equipment is the PPPoE server cluster, the second network equipment is the NVE equipment.
Optionally, the method includes:
the NVGRE tunnel message also comprises an outer Ethernet header and an inner Ethernet header; the outer Ethernet head comprises a source physical address of the PPPoE message and a destination physical address of the PPPoE message; the memory ethernet header includes a source physical address of the NVGRE tunnel packet and a destination physical address of the NVGRE tunnel packet.
The embodiment of the invention provides a PPPoE message transmission method, which comprises the following steps:
the second network equipment receives a network virtualization NVGRE tunnel message which is sent by the first network equipment and packaged by using a general route through the NVGRE tunnel; the NVGRE tunnel message comprises a destination IP address of the NVGRE tunnel message and a Tenant Network Identifier (TNI); the NVGRE tunnel corresponds to the TNI;
the second network equipment decapsulates the NVGRE tunnel message into a PPPoE message, and determines the length of the PPPoE message;
and if the destination IP address is different from the IP address of the second network equipment, or the length of the PPPoE message is greater than a preset message threshold value, the second network equipment discards the NVGRE tunnel message.
Optionally, the method includes:
and the second network equipment acquires the TNI from the NVGRE tunnel message and determines the bandwidth cost of the user corresponding to the TNI.
The embodiment of the invention provides a PPPoE message transmission device, which comprises:
the receiving module is used for receiving a point-to-point communication protocol PPPoE message based on the Ethernet;
a processing module, configured to encapsulate the PPPoE message as the NVGRE tunnel message if the length of the PPPoE message is less than or equal to a preset message threshold; the NVGRE tunnel message comprises a destination IP address of the NVGRE tunnel message and a Tenant Network Identifier (TNI), wherein the TNI corresponds to one NVGRE tunnel; and the NVGRE tunnel corresponding to the TNI is determined, and the NVGRE tunnel message is sent to the second network equipment corresponding to the destination IP address through the NVGRE tunnel.
Optionally, the processing module is further configured to:
if the length of the PPPoE message is greater than the preset message threshold, the PPPoE message is divided into N PPPoE sub-messages, and each PPPoE sub-message is packaged into the NVGRE tunnel message; wherein the length of each PPPoE sub-message is less than or equal to the preset message threshold; n is an integer greater than 1.
Optionally, the apparatus includes:
if the device is a network virtualization edge NVE device, the second network device is a PPPoE server cluster; and if the device is the PPPoE server cluster, the second network equipment is the NVE equipment.
Optionally, the NVGRE tunnel packet further includes an outer ethernet header and an inner ethernet header; the outer Ethernet head comprises a source physical address of the PPPoE message and a destination physical address of the PPPoE message; the memory ethernet header includes a source physical address of the NVGRE tunnel packet and a destination physical address of the NVGRE tunnel packet.
The embodiment of the invention provides a PPPoE message transmission device, which comprises:
the receiving module is used for receiving a network virtualization NVGRE tunnel message which is sent by the first network equipment and encapsulated by the general routing through the NVGRE tunnel; the NVGRE tunnel message comprises a destination IP address of the NVGRE tunnel message and a Tenant Network Identifier (TNI); the NVGRE tunnel corresponds to the TNI;
the processing module is used for decapsulating the NVGRE tunnel message into a PPPoE message and determining the length of the PPPoE message; and the NVGRE tunnel message is discarded if the destination IP address is different from the IP address of the second network device or the length of the PPPoE message is greater than a preset message threshold value.
Optionally, the processing module is further configured to:
and acquiring the TNI from the NVGRE tunnel message, and determining the bandwidth cost of a user corresponding to the TNI.
In the embodiment of the invention, after the first network device encapsulates the PPPoE message through the NVGRE tunnel information, the NVGRE tunnel can transmit the encapsulated PPPoE message to the second network device belonging to the three-layer network, thereby realizing the transmission of the PPPoE message between the first network device or the two-layer network device and the three-layer network device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a network topology architecture diagram corresponding to a PPPoE message transmission method according to an embodiment of the present invention.
Fig. 2 is a flowchart of steps corresponding to a PPPoE message transmission method according to an embodiment of the present invention.
Fig. 3 is a PPPoE message encapsulation format corresponding to the PPPoE message transmission method according to the embodiment of the present invention.
Fig. 4 is a timing diagram corresponding to a PPPoE message transmission method according to an embodiment of the present invention.
Fig. 5 is a flowchart of steps corresponding to a PPPoE message transmission method according to an embodiment of the present invention.
Fig. 6 is a timing diagram corresponding to a PPPoE message transmission method according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a PPPoE message transmission device according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a PPPoE message transmission device according to an embodiment of the present invention.
Detailed Description
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the present application, but not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
The embodiments of the present invention will be described in further detail with reference to the drawings attached hereto.
A Point-to-Point Protocol over Ethernet (PPPoE) based on Ethernet is a Protocol for transmitting data over Ethernet according to a Point-to-Point Protocol, which can provide good access control and charging functions. The protocol can realize that a plurality of hosts on a remote site are connected through the same access equipment to carry out dial-up networking, and meanwhile, the access equipment can provide access control and charging functions. In addition, among many access technologies, the most economical method for connecting multiple hosts to an access device is through ethernet connection, and a Point-to-Point Protocol (PPP) can provide good access control and charging functions. Therefore, PPPoE is an economical, convenient and fully functional dial-up networking protocol.
However, the PPPoE protocol belongs to a two-layer protocol, and therefore, only packet transmission can be performed based on a two-layer network, and three-layer forwarding cannot be performed. The two-layer network is a data link layer in an Open System Interconnection (OSI) model, and the three-layer network is a network layer in the OSI model.
With the rise of Software Defined Networking (SDN) technology, centralized management and control is becoming the mainstream. The SDN is a novel network architecture, and is an implementation manner of network virtualization, and a core technology thereof separates a control plane and a data plane of a network device, and control functions are concentrated on one control plane. The data plane of the SDN is only responsible for forwarding data, and a network manager can define rules, strategies and the like of network forwarding through programming the control plane, so that flexible control of network flow is realized. Therefore, in an SDN scenario, some network devices bearing a control function, such as PPPoE servers, need to be deployed from an original two-layer network to a cluster in a three-layer network. However, the PPPoE protocol belongs to a two-layer protocol, and does not support three-layer forwarding, so in the prior art, PPPoE messages cannot be transmitted between a two-layer network device and a three-layer network device, for example, between a client in a one-layer network and a PPPoE server in a three-layer network.
Therefore, in the prior art, in an SDN scene, it is an urgent problem to be solved that PPPoE packet transmission cannot be performed between a two-layer network device and a three-layer network device. The embodiment of the invention provides a PPPoE message transmission method based on Network Virtualization using general Routing Encapsulation (NVGRE). NVGRE is a technique to create multiple independent virtual two-tier networks, among other things. The NVGRE adopts a general routing encapsulation strategy to create a large number of Virtual Local Area Network (VLAN) VLAN subnets, which can be extended to a distributed data center and two-layer and three-layer networks, thereby implementing a multi-lease Network with load balancing shared in the cloud and private networks. NVGRE uses Generic Routing Encapsulation (GRE) to create an independent virtual two-tier network, limiting the physical two-tier network or extending beyond subnet boundaries. NVGRE solves the multi-tenancy network problem by leasing network identifiers (TNIs), each TNI corresponding to a GRE channel one-to-one. It should be noted that, in the embodiment of the present invention, only NVGRE is taken as an example to transmit a PPPoE message.
Fig. 1 is a network topology structure diagram corresponding to a PPPoE message transmission method according to an embodiment of the present invention. The embodiment of the present invention only takes the scenario in fig. 1 as an example to illustrate PPPoE message transmission between a PPPoE client of a layer network device and a PPPoE server cluster of a layer three network device, but is not limited to PPPoE message transmission between other network devices.
The network topology architecture includes: a PPPoE client, a Network Virtualization Edge (NVE) device, a router, an NVGRE tunnel, and a PPPoE server cluster.
PPPoE client: computers connected to the PPPoE server cluster through PPPoE use the files, printers and other resources shared by the PPPoE server cluster.
NVE equipment: NVGRE's edge device. NVGRE related processing is performed on NVE, for example, identifying an NVGRE network to which an ethernet data frame belongs, performing two-layer forwarding on the data frame based on NVGRE, encapsulating/decapsulating a packet, and the like. The NVE may be a server where the virtual machine is located, or may be an independent physical device.
The router: the router is a device for connecting each local area network and wide area network in the internet, and automatically selects and sets a route according to the condition of a channel, and sends signals in a front-back sequence by using an optimal path.
NVGRE tunnel: NVGRE tunnels are a type of tunneling technique, which is a way to pass data between networks by using the infrastructure of the internetwork. The data (or payload) communicated using the tunnel may be data frames or packets of different protocols. Tunneling protocols re-encapsulate data frames or packets of other protocols and then send through tunnels. The new header provides routing information to deliver the encapsulated payload data over the internet. In the scenario shown in fig. 1, the tunneling protocol is NVGRE protocol. The PPPoE client is connected with the NVE device, encapsulates the PPPoE message by adopting an NVGRE protocol, and transmits the PPPoE message with the PPPoE server cluster by the forwarding of the router in the three-layer network through the NVGRE tunnel.
PPPoE server cluster: the set of multiple servers running PPPoE services has multiple servers physically, and only one server logically is seen from a client. The PPPoE server cluster can utilize a plurality of computers to perform parallel computation so as to obtain high computation speed, and can also use a plurality of computers to perform backup so as to ensure that any one machine damages the whole system or can normally run.
Fig. 2 shows a specific transmission process, which is a flowchart of steps corresponding to the PPPoE message transmission method according to the embodiment of the present invention. Fig. 2 is a flowchart of a procedure in which a layer one or two layer network device sends a PPPoE message to a layer three network device.
Step 201: the first network equipment receives a point-to-point communication protocol PPPoE message based on the Ethernet.
Step 202: and if the length of the PPPoE message is less than or equal to a preset message threshold value, the first network equipment encapsulates the PPPoE message into the NVGRE tunnel message.
The NVGRE tunnel message includes a destination IP address of the NVGRE tunnel message and a tenant network identifier TNI, where the TNI corresponds to one NVGRE tunnel.
Step 203: and the first network equipment determines the NVGRE tunnel corresponding to the TNI, and sends the NVGRE tunnel message to second network equipment corresponding to the destination IP address through the NVGRE tunnel.
In step 201, a first network device receives a point-to-point protocol over ethernet PPPoE message.
In step 202, the first network device encapsulates the PPPoE message into an NVGRE tunnel message according to the NVGRE tunnel information. Optionally, the first network device is an NVE device. The NVGRE tunnel information comprises an outer layer Ethernet header, an outer layer IP address, a GRE header and an inner layer Ethernet header.
Fig. 3 shows specific contents of an NVGRE tunnel message, which is a PPPoE message encapsulation format corresponding to the PPPoE message transmission method provided by the embodiment of the present invention. The NVGRE tunnel message after PPPoE message encapsulation includes but is not limited to: outer Ethernet head, outer IP address, GRE head, inner Ethernet head, PPPoE data. The PPPoE data is an original PPPoE message, and the GRE header at least comprises a marking bit, TNI and a protocol type.
One possible implementation is to add a GRE header before the inner ethernet header, and write the TNI in the VSID field in the GRE header 1. And 2, adding an outer layer Internet Protocol (IP) address before the GRE header, wherein the outer layer IP address comprises an outer layer IP source address and an outer layer IP destination address, the outer layer IP source address is the IP address of the local NVE, and the outer layer IP destination address provides an accessible IP address for the PPPoE server cluster. And 3, adding an outer Ethernet header, wherein the outer Ethernet header comprises a source physical address and a destination physical address, the source physical address is a physical address of NVE, and the destination physical address is a next hop physical address. After the PPPoE message is converted into a three-layer NVGRE tunnel message, the message can be forwarded by three-layer network equipment to reach the PPPoE server cluster.
Optionally, if the length of the PPPoE message is greater than the preset message threshold, the first network device divides the PPPoE message into N PPPoE sub-messages, and encapsulates each PPPoE sub-message as the NVGRE tunnel message; wherein the length of each PPPoE sub-message is less than or equal to the preset message threshold; n is an integer greater than 1.
In step 202, the TNI is configured to determine an NVGRE tunnel corresponding to the TNI, and after the NVGRE tunnel packet is encapsulated, the first network device sends the NVGRE tunnel packet to the second network device through the NVGRE tunnel determined by the TNI.
In step 203, optionally, the first network device receives a response packet of the NVGRE tunnel packet in order to determine that the PPPoE server cluster receives the NVGRE tunnel packet and implement data interaction with the PPPoE server cluster.
In the above step 201 to step 203, if the first network device is a network virtualization edge NVE device, the second network device is a PPPoE server cluster; and if the first network equipment is the PPPoE server cluster, the second network equipment is the NVE equipment.
As shown in fig. 4, a timing diagram corresponding to a PPPoE message transmission method according to an embodiment of the present invention is shown. The sequence diagram describes a process in which a first layer network device sends a PPPoE message to a third layer network device. The network device related to fig. 4 includes: PPPoE client, NVE, router, PPPoE server cluster. The specific time sequence process is as follows:
401: and the PPPoE client sends a PPPoE dialing message to the NVE.
402: and the NVE encapsulates the NVGRE tunnel message.
403: and the NVE sends the NVGRE tunnel message to the router.
The router is a three-layer network device.
404: and the router forwards the NVGRE tunnel message to the PPoE server cluster.
405: and the PPoE server cluster decapsulates the NVGRE tunnel message.
406: and the PPoE server cluster extracts the TNI in the NVGRE tunnel message.
407: and the PPPoE server cluster extracts PPPoE information in the NVGRE tunnel message.
408: and the PPoE server cluster determines the NVGRE tunnel of the NVGRE tunnel message.
The above 405 to 408 are specific steps of a series of processing after the PPPoE server cluster receives the NVGRE tunnel message, which will be described in detail with reference to fig. 5, and as shown in fig. 5, is a flowchart of steps corresponding to the PPPoE message transmission method provided by the embodiment of the present invention.
Step 501: and the second network equipment receives a network virtualization NVGRE tunnel message which is sent by the first network equipment and packaged by using the general routing through the NVGRE tunnel.
The NVGRE tunnel message comprises a destination IP address of the NVGRE tunnel message and a Tenant Network Identifier (TNI); the NVGRE tunnel corresponds to the TNI.
Step 502: and the second network equipment decapsulates the NVGRE tunnel message into a PPPoE message and determines the length of the PPPoE message.
Step 503: if the destination IP address is different from the IP address of the second network device, or the length of the PPPoE message is larger than a preset message threshold value; the second network device discards the NVGRE tunnel message.
In step 501, the second network device receives an NVGRE tunnel packet. The NVGRE tunnel message comprises a point-to-point communication protocol PPPoE message based on the Ethernet and a tenant network identifier TNI; the TNI is used for determining an NVGRE tunnel corresponding to the TNI; the first network equipment is one-layer network equipment or two-layer network equipment; the second network device is a three-layer network device.
After acquiring the PPPoE message, the PPPoE server cluster generates a PPPoE response message, and then sends the PPPoE response message to the PPPoE client through the NVE, which will be described in detail with reference to fig. 6, as shown in fig. 6, is a timing diagram corresponding to the PPPoE message transmission method provided by the embodiment of the present invention.
601: the PPPoE server cluster generates a PPPoE response message.
602: the PPPoE server cluster looks up TNI.
603: and the PPPoE server cluster encapsulates the PPPoE response message into a response message of the NVGRE tunnel message according to the TNI.
604: and the PPPoE server cluster sends the response message of the NVGRE tunnel message to the router.
605: and the router transmits a response message of the NVGRE tunnel message to the NVE.
606: and the NVE decapsulates the response message of the NVGRE tunnel message.
607: and the NVE sends a PPPoE response message to the PPPoE client.
In the embodiment of the invention, after the first network device encapsulates the PPPoE message through the NVGRE tunnel information, the NVGRE tunnel can transmit the encapsulated PPPoE message to the second network device belonging to the three-layer network, thereby realizing the transmission of the PPPoE message between the first network device or the two-layer network device and the three-layer network device.
As shown in fig. 7, a schematic structural diagram of a PPPoE message transmission device provided in an embodiment of the present invention is shown, where the device includes:
a receiving module 701, configured to receive a point-to-point protocol over ethernet PPPoE message;
a processing module 702, configured to encapsulate the PPPoE message as the NVGRE tunnel message if the length of the PPPoE message is less than or equal to a preset message threshold; the NVGRE tunnel message comprises a destination IP address of the NVGRE tunnel message and a Tenant Network Identifier (TNI), wherein the TNI corresponds to one NVGRE tunnel; and the NVGRE tunnel corresponding to the TNI is determined, and the NVGRE tunnel message is sent to the second network equipment corresponding to the destination IP address through the NVGRE tunnel.
Optionally, the processing module 702 is further configured to:
if the length of the PPPoE message is greater than the preset message threshold, the PPPoE message is divided into N PPPoE sub-messages, and each PPPoE sub-message is packaged into the NVGRE tunnel message; wherein the length of each PPPoE sub-message is less than or equal to the preset message threshold; n is an integer greater than 1.
Optionally, the apparatus includes:
if the device is a network virtualization edge NVE device, the second network device is a PPPoE server cluster; and if the device is the PPPoE server cluster, the second network equipment is the NVE equipment.
Optionally, the NVGRE tunnel packet further includes an outer ethernet header and an inner ethernet header; the outer Ethernet head comprises a source physical address of the PPPoE message and a destination physical address of the PPPoE message; the memory ethernet header includes a source physical address of the NVGRE tunnel packet and a destination physical address of the NVGRE tunnel packet.
As shown in fig. 8, a schematic structural diagram of a PPPoE message transmission device according to an embodiment of the present invention is shown, where the device includes:
a receiving module 801, configured to receive, through an NVGRE tunnel, a network virtualization NVGRE tunnel message that is sent by a first network device and encapsulated by using a generic route; the NVGRE tunnel message comprises a destination IP address of the NVGRE tunnel message and a Tenant Network Identifier (TNI); the NVGRE tunnel corresponds to the TNI;
a processing module 802, configured to decapsulate the NVGRE tunnel packet into a PPPoE packet, and determine a length of the PPPoE packet; and the NVGRE tunnel message is discarded if the destination IP address is different from the IP address of the second network device or the length of the PPPoE message is greater than a preset message threshold value.
Optionally, the processing module 802 is further configured to:
and acquiring the TNI from the NVGRE tunnel message, and determining the bandwidth cost of a user corresponding to the TNI.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (12)
1. A PPPoE dialing message transmission method is characterized by comprising the following steps:
a first network device receives a point-to-point communication protocol PPPoE message based on the Ethernet;
if the length of the PPPoE message is smaller than or equal to a preset message threshold value, the first network equipment encapsulates the PPPoE message into the NVGRE tunnel message; the NVGRE tunnel message comprises a destination IP address of the NVGRE tunnel message and a Tenant Network Identifier (TNI), wherein the TNI corresponds to one NVGRE tunnel;
and the first network equipment determines the NVGRE tunnel corresponding to the TNI, and sends the NVGRE tunnel message to second network equipment corresponding to the destination IP address through the NVGRE tunnel.
2. The method of claim 1, further comprising:
if the length of the PPPoE message is greater than the preset message threshold, the first network device divides the PPPoE message into N PPPoE sub-messages, and encapsulates each PPPoE sub-message into the NVGRE tunnel message; wherein the length of each PPPoE sub-message is less than or equal to the preset message threshold; n is an integer greater than 1.
3. The method of claim 1, comprising:
if the first network device is a network virtualization edge NVE device, the second network device is a PPPoE server cluster; and if the first network equipment is the PPPoE server cluster, the second network equipment is the NVE equipment.
4. A method according to any one of claims 1 to 3, comprising:
the NVGRE tunnel message also comprises an outer Ethernet header and an inner Ethernet header; the outer Ethernet head comprises a source physical address of the PPPoE message and a destination physical address of the PPPoE message; the memory ethernet header includes a source physical address of the NVGRE tunnel packet and a destination physical address of the NVGRE tunnel packet.
5. A method for packet transmission, comprising:
the second network equipment receives a network virtualization NVGRE tunnel message which is sent by the first network equipment and packaged by using a general route through the NVGRE tunnel; the NVGRE tunnel message comprises a destination IP address of the NVGRE tunnel message and a Tenant Network Identifier (TNI); the NVGRE tunnel corresponds to the TNI;
the second network equipment decapsulates the NVGRE tunnel message into a PPPoE message, and determines the length of the PPPoE message;
and if the destination IP address is different from the IP address of the second network equipment, or the length of the PPPoE message is greater than a preset message threshold value, the second network equipment discards the NVGRE tunnel message.
6. The method of claim 5, comprising:
and the second network equipment acquires the TNI from the NVGRE tunnel message and determines the bandwidth cost of the user corresponding to the TNI.
7. A PPPoE dialing message transmission device is characterized by comprising:
the receiving module is used for receiving a point-to-point communication protocol PPPoE message based on the Ethernet;
a processing module, configured to encapsulate the PPPoE message as the NVGRE tunnel message if the length of the PPPoE message is less than or equal to a preset message threshold; the NVGRE tunnel message comprises a destination IP address of the NVGRE tunnel message and a Tenant Network Identifier (TNI), wherein the TNI corresponds to one NVGRE tunnel; and the NVGRE tunnel corresponding to the TNI is determined, and the NVGRE tunnel message is sent to the second network equipment corresponding to the destination IP address through the NVGRE tunnel.
8. The apparatus of claim 7, wherein the processing module is further configured to:
if the length of the PPPoE message is greater than the preset message threshold, the PPPoE message is divided into N PPPoE sub-messages, and each PPPoE sub-message is packaged into the NVGRE tunnel message; wherein the length of each PPPoE sub-message is less than or equal to the preset message threshold; n is an integer greater than 1.
9. The apparatus of claim 7, comprising:
if the device is a network virtualization edge NVE device, the second network device is a PPPoE server cluster; and if the device is the PPPoE server cluster, the second network equipment is the NVE equipment.
10. The apparatus of any of claims 7-9, comprising:
the NVGRE tunnel message also comprises an outer Ethernet header and an inner Ethernet header; the outer Ethernet head comprises a source physical address of the PPPoE message and a destination physical address of the PPPoE message; the memory ethernet header includes a source physical address of the NVGRE tunnel packet and a destination physical address of the NVGRE tunnel packet.
11. A message transmission apparatus, comprising:
the receiving module is used for receiving a network virtualization NVGRE tunnel message which is sent by the first network equipment and encapsulated by the general routing through the NVGRE tunnel; the NVGRE tunnel message comprises a destination IP address of the NVGRE tunnel message and a Tenant Network Identifier (TNI); the NVGRE tunnel corresponds to the TNI;
the processing module is used for decapsulating the NVGRE tunnel message into a PPPoE message and determining the length of the PPPoE message; and the NVGRE tunnel message is discarded if the destination IP address is different from the IP address of the second network device or the length of the PPPoE message is greater than a preset message threshold value.
12. The apparatus of claim 11, wherein the processing module is further configured to:
and acquiring the TNI from the NVGRE tunnel message, and determining the bandwidth cost of a user corresponding to the TNI.
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