WO2018107594A1

WO2018107594A1 - Overlay network implementation method, terminal, device, and computer-readable storage medium

Info

Publication number: WO2018107594A1
Application number: PCT/CN2017/076518
Authority: WO
Inventors: 贾毫杰
Original assignee: 平安科技（深圳）有限公司
Priority date: 2016-12-16
Filing date: 2017-03-14
Publication date: 2018-06-21
Also published as: CN106789529B; CN106789529A

Abstract

Disclosed in the embodiments of the present invention are an overlay network implementation method, terminal, device, and computer-readable storage medium, said method comprising: if a new host machine is added, creating a first dynamic network information segment between the host machine and a network device; creating a second dynamic network information segment between network devices; if a packet is sent, then according to said first dynamic network information segment and second dynamic network information segment, controlling said packet to be sent from a network device of the source host machine to a network device of a destination host machine. The embodiments of the present invention enable the same virtual local-area network (VLAN) identifier to be allocated to different host machines; during the process of packet forwarding, it is also possible to use a correlation between the host machine and network devices on the first dynamic network information segment to distinguish packets sent by different host machines, thereby resolving the conflict of different host machines using the same virtual local-area network identifier; at the same time, the network limitations of a virtual local-area network are resolved and communication between a VLAN and an overlay network is achieved.

Description

Method, terminal, device and computer readable storage medium for OVERLAY network

Technical field

The present invention relates to the field of computer technologies, and in particular, to a method, a terminal, a device, and a computer readable storage medium for implementing an OVERLAY network.

Background technique

Currently, VXLAN (Virtual eXtensible) is usually used. LAN, scalable virtual local area network) or GRE (Generic Routing) Encapsulation, general routing encapsulation technology to achieve OVERLAY network, due to the needs of certain scenarios, users want OVERLAY network and VLAN network coexistence, the existing solution is to convert through L2Gateway to achieve VLAN network and OVERLAY network interoperability, but due to VLAN The network itself is limited, and the VLAN network can only support 4096 tenant networks after interworking with the OVERLAY network. In the current multi-tenant large-scale cloud application scenario, it is not enough. How to solve the network limitation of the virtual LAN and Interoperability between VLAN and OVERLAY networks has become the key to extending the OVERLAY network.

Summary of the invention

In view of this, the embodiments of the present invention provide an implementation method, a terminal, a device, and a computer readable storage medium of an OVERLAY network, which can solve the network limitation of the virtual local area network, and can also implement interworking between the VLAN and the OVERLAY network.

An implementation method of an OVERLAY network, the method comprising:

If a host is added, a first dynamic network information segment between the host and the network device is created;

Creating a second dynamic network information segment between the network devices;

And if the packet is sent, the packet is sent from the network device of the source host to the network device of the target host according to the first dynamic network information segment and the second dynamic network information segment.

Further, the first dynamic network information segment includes a first correspondence between the host and the network device, a first network type, and a first network identifier;

And the sending, according to the first dynamic network information segment, the network device that sends the packet from the network device of the source host to the target host according to the first dynamic network information segment, including:

Sending, according to the first correspondence in the first dynamic network information segment, the packet from a source host to a network device corresponding to the source host;

The network device of the source host sends the message to the network device of the target host.

Further, the second dynamic network information segment includes a second correspondence between the network devices, a second network type, and a second network identifier.

And if the sending the packet, the network device that sends the packet from the network device of the source host to the target host according to the second dynamic network information segment includes:

Sending, according to the second correspondence in the second dynamic network information segment, the packet from the network device of the source host to the network device of the target host;

Sending the message from the network device of the target host to the target host according to the first dynamic network information segment.

Further, the method further includes:

If the packet is sent from the network device of the source host to the network device of the target host, the packet is encapsulated into a packet format of the second network type.

Further, the method further includes:

And if the packet is sent from the network device of the source host to the network device of the target host, the packet is decapsulated into a packet format of the first network type.

A terminal, the terminal comprising:

a first creating unit, configured to create a first dynamic network information segment between the host and the network device if the host is added;

a second creating unit, configured to create a second dynamic network information segment between the network device and the network device;

And a sending unit, configured to, according to the first dynamic network information segment and the second dynamic network information segment, control the sending of the packet from the network device of the source host to the network device of the target host according to the first dynamic network information segment.

The sending unit includes:

a first sending subunit, configured to send the packet from a source host to a network device corresponding to the source host according to the first correspondence in the first dynamic network information segment;

a second sending subunit, where the network device of the source host sends the packet to the target host

Internet equipment.

Further, the second dynamic network information segment includes a second correspondence between the network device and the network device, a second network type, and a second network identifier.

The sending unit includes:

a third sending subunit, configured to send the packet from the network device of the source host to the network device of the target host according to the second correspondence in the second dynamic network information segment;

And a fourth sending subunit, configured to send the packet from the network device of the target host to the target host according to the first dynamic network information segment.

Further, the terminal further includes:

The encapsulating unit is configured to: when the packet is sent from the network device of the source host to the network device of the target host, encapsulate the packet into a packet format of the second network type.

Further, the terminal further includes:

And a decapsulation unit, configured to decapsulate the packet into a packet format of the first network type, if the packet is sent from a network device of the source host to a network device of the target host.

An implementation device of an OVERLAY network, the device comprising: a memory and a processor;

a memory for storing applications and data that implement an OVERLAY network;

a processor for running an application stored in the memory to perform the following operations:

Further, the processor further performs the following operations:

A computer readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to perform the steps of:

The step of, if the packet is sent, the network device that is sent from the network device of the source host to the network device of the target host according to the first dynamic network information segment, includes:

And the step of: sending, according to the second dynamic network information segment, the network device that is sent from the network device of the source host to the network device of the target host according to the second dynamic network information segment:

Further, the steps further include:

It can be seen that the embodiment of the present invention realizes that the same virtual local area network identifier is allocated on different hosts by creating a first dynamic network information segment between the host and the network device and a second dynamic network information segment between the network devices. In the packet forwarding process, the correspondence between the host and the network device in the first dynamic network information segment can also be used to distinguish packets sent by different hosts, thereby solving the conflict that different hosts use the same virtual local area network identifier, and simultaneously solve the problem. The network limitation of the virtual local area network realizes the interworking of the VLAN and the OVERLAY network.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present invention. For the ordinary technicians, other drawings can be obtained based on these drawings without any creative work.

FIG. 1 is a schematic flowchart diagram of an implementation method of an OVERLAY network according to Embodiment 1 of the present invention.

FIG. 2 is another schematic flowchart of an implementation method of an OVERLAY network according to Embodiment 1 of the present invention.

FIG. 3 is another schematic flowchart of an implementation method of an OVERLAY network according to Embodiment 1 of the present invention.

4 is a schematic flowchart of a method for implementing an OVERLAY network according to Embodiment 2 of the present invention.

FIG. 5 is a schematic flowchart of a method for implementing an OVERLAY network according to Embodiment 3 of the present invention.

FIG. 6 is a schematic block diagram of a terminal according to an embodiment of the present invention.

FIG. 7 is another schematic block diagram of a terminal according to an embodiment of the present invention.

FIG. 8 is another schematic block diagram of a terminal according to an embodiment of the present invention.

FIG. 9 is another schematic block diagram of a terminal according to an embodiment of the present invention.

FIG. 10 is another schematic block diagram of a terminal according to an embodiment of the present invention.

FIG. 11 is a schematic structural diagram of an apparatus for implementing an OVERLAY network according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It will be understood that the terms "comprise" and "the" when used in the specification and the appended claims "Comprising" indicates the existence of the described features, integers, steps, operations, elements and/or components, but does not exclude the presence of one or more other features, integers, steps, operations, elements, components and/or combinations thereof Add to.

It is also to be understood that the terminology of the present invention is to be construed as a The singular forms "", ",",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

FIG. 1 is a schematic flowchart diagram of an implementation method of an OVERLAY network according to Embodiment 1 of the present invention. The method includes steps S101 to S103.

S101. If a host is added, create a first dynamic network information segment between the host and the network device.

Specifically, in the embodiment of the present invention, each host is newly created, and the host and the network device are created.

a first dynamic network information segment; the first dynamic information segment includes a first correspondence between the host and the network device, a first network type, and a first network identifier, where the first correspondence is a network

A one-to-one correspondence between the network device and the newly added host, the first network type is a network type between the network device and the newly added host, and the network type may be a virtual local area network (Virtual Local area network (VLAN), the first network identifier is a virtual local area network identifier of the virtual local area network (Virtual Local Area Network ID, VLAN ID), the VLAN ID is used to uniquely identify the VLAN. In general, the number of VLAN IDs is 4096. The ID ranges from 0 to 4095. The range of VLAN IDs that can be used ranges from 1 to 4094, and the number of VLAN IDs that can be used is 4094.

S102. Create a second dynamic network information segment between the network devices.

Specifically, in the embodiment of the present invention, the second dynamic network information segment includes a second correspondence between network devices, a second network type, and a second network identifier, where the second correspondence is a network device and a one-to-one correspondence between network devices, the network device includes a target network device and a source network device, and the second network type is a network type between the network device and the network device, and the network type may be a virtual local area network, or may be Scalable virtual local area network (Virtual eXtensible LAN, VXLAN), the second network identifier may be a virtual local area network identifier indicating a virtual local area network, or may be an expandable virtual local area network identifier indicating an expandable virtual local area network (Virtual eXtensible LAN ID, VXLAN ID).

S103. If the packet is sent, the packet is sent from the network device of the source host to the network device of the target host according to the first dynamic network information segment and the second dynamic network information segment.

Specifically, in the embodiment of the present invention, the packet may be any packet that needs to be forwarded in the network. In the packet forwarding process, the first dynamic network information segment records the relationship between the host and the corresponding network device. The virtual local area network identifier is used. Therefore, the same virtual local area network identifier is allocated on different hosts, and the correspondence between the host and the network device in the first dynamic network information segment can also be used to distinguish packets sent by different hosts, thereby solving different hosts. Conflicts that use the same virtual LAN ID.

It can be seen from the above that the embodiment of the present invention realizes that the same virtual local area network identifier is allocated on different hosts by creating a first dynamic network information segment between the host and the network device and a second dynamic network information segment between the network devices. In the packet forwarding process, the correspondence between the host and the network device in the first dynamic network information segment can also be used to distinguish packets sent by different hosts, thereby solving the conflict that different hosts use the same virtual local area network identifier, and simultaneously solve the problem. Virtual network network limitation, implementation

Interworking between VLAN and OVERLAY network.

As shown in FIG. 2, in step S103, if the packet is sent, the packet is sent from the network device of the source host to the network device of the target host according to the first dynamic network information segment, and specifically includes steps S201 to S202.

S201. Send the packet from a source host to a network device corresponding to the source host according to the first correspondence in the first dynamic network information segment. S202. The network device of the source host sends the packet to a network device of the target host.

As shown in FIG. 3, in step S103, if the packet is sent, the packet is sent from the network device of the source host to the network device of the target host according to the second dynamic network information segment, and specifically includes steps S301 to S302.

S301. Send the packet from the network device of the source host to the network device of the target host according to the second correspondence in the second dynamic network information segment. S302. Send the packet from the network device of the target host to the target host according to the first dynamic network information segment.

As shown in FIG. 4, it is a schematic flowchart of another embodiment of an implementation method of an OVERLAY network according to the present invention, which includes steps S401 to S404 (steps S401 to S403 and steps S101 to S103 in the first embodiment of the present invention). The same, no longer repeat here).

S401. If a host is added, create a first dynamic network information segment between the host and the network device.

S402. Create a second dynamic network information segment between the network devices.

S403. If the packet is sent, the packet is sent from the network device of the source host to the network device of the target host according to the first dynamic network information segment and the second dynamic network information segment.

S404: If the packet is sent from the network device of the source host to the network device of the target host, the packet is encapsulated into a packet format of the second network type.

Specifically, if the second network type is VXLAN, the packet is sent from the network device of the source host to the network device of the target host, and the format of the packet is encapsulated into a VXLAN packet; the original packet format is a VLAN. Therefore, packets of the VLAN are encapsulated into VXLAN packets.

It can be seen that, in the embodiment of the present invention, when the packet is sent from the network device of the source host to the network device of the target host, the packet format is encapsulated into a VXLAN packet, which facilitates the transmission of the packet.

As shown in FIG. 5, it is a flow of still another embodiment of an implementation method of an OVERLAY network according to the present invention.

The flowcharts include the steps S501 to S504 (the steps S501 to S504 are the same as the steps S101 to S103 in the first embodiment of the present invention, and are not described herein again).

S501: If a host is added, create a first dynamic network information segment between the host and the network device.

S502. Create a second dynamic network information segment between the network devices.

S503. If the packet is sent, the packet is sent from the network device of the source host to the network device of the target host according to the first dynamic network information segment and the second dynamic network information segment.

S504: If the packet is sent from the network device of the source host to the network device of the target host, the packet is decapsulated into the packet format of the first network type.

Specifically, when the packet is sent from the network device of the source host to the network device of the target host, the packet of the network device that enters the target host is a VXLAN packet. Therefore, the packet of the VXLAN needs to be decapsulated into a VLAN. The message is sent to the target host by the network device of the target host.

It can be seen that, when the packet of the embodiment of the present invention is sent from the network device of the source host to the network device of the target host, the packet of the VXLAN is decapsulated into a VLAN packet, so that the network device of the target host sends the packet. To the target host.

One of ordinary skill in the art can understand that all or part of the process of implementing the foregoing embodiments can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, or a read-only storage memory (Read-Only) Memory, ROM) or Random Access Memory (RAM).

As shown in FIG. 6 , corresponding to the implementation method of the foregoing OVERLAY network, the embodiment of the present invention further provides a terminal, where the terminal 100 includes: a first creating unit 10, a second creating unit 20, and a sending unit 30.

The first creating unit 10 is configured to create a first dynamic network information segment between the host and the network device if the host is added. Specifically, in the embodiment of the present invention, each new host is created, and a first dynamic network information segment between the host and the network device is created; the first dynamic information segment includes a first between the host and the network device. a first correspondence, a first network type, and a first network identifier, where the first correspondence is a one-to-one correspondence between the network device and the newly added host, where the first network type is a network device and a new host Between the types of networks, the network type can be a virtual local area network (Virtual Local area network (VLAN), the first network identifier is a virtual local area network identifier of the virtual local area network (Virtual Local Area Network ID, VLAN ID), the VLAN ID is used to uniquely identify the VLAN. In general, the number of VLAN IDs is 4096. The ID ranges from 0 to 4095. The range of VLAN IDs that can be used ranges from 1 to 4094, and the number of VLAN IDs that can be used is 4094.

The second creating unit 20 is configured to create a second dynamic network information segment between the network device and the network device. Specifically, in the embodiment of the present invention, the second dynamic network information segment includes a network device

a second correspondence, a second network type, and a second network identifier, where the second correspondence is a one-to-one correspondence between the network device and the network device, where the network device includes the target network device and the source network device, and the second The network type is a network type between a network device and a network device, and the network type may be a virtual local area network or an expandable virtual local area network (Virtual eXtensible LAN, VXLAN), the second network identifier may be a virtual local area network identifier indicating a virtual local area network, or may be an expandable virtual local area network identifier indicating an expandable virtual local area network (Virtual eXtensible LAN ID, VXLAN ID).

The sending unit 30 is configured to: if the packet is sent, control, according to the first dynamic network information segment and the second dynamic network information segment, the packet is sent from the network device of the source host to the network device of the target host. Specifically, in the embodiment of the present invention, the packet may be any packet that needs to be forwarded in the network. In the packet forwarding process, the first dynamic network information segment records the relationship between the host and the corresponding network device. The virtual local area network identifier is used. Therefore, the same virtual local area network identifier is allocated on different hosts, and the correspondence between the host and the network device in the first dynamic network information segment can also be used to distinguish packets sent by different hosts, thereby solving different hosts. Conflicts that use the same virtual LAN ID.

It can be seen from the above that the embodiment of the present invention realizes that the same virtual local area network identifier is allocated on different hosts by creating a first dynamic network information segment between the host and the network device and a second dynamic network information segment between the network devices. In the packet forwarding process, the correspondence between the host and the network device in the first dynamic network information segment can also be used to distinguish packets sent by different hosts, thereby solving the conflict that different hosts use the same virtual local area network identifier, and simultaneously solve the problem. The network limitation of the virtual local area network realizes the interworking of the VLAN and the OVERLAY network.

As shown in FIG. 7, the sending unit 30 specifically includes:

The first sending subunit 301 is configured to send the packet from the source host to the network device corresponding to the source host according to the first correspondence in the first dynamic network information segment.

The second sending subunit 302 is configured to send, by the network device of the source host, the packet to a network device of the target host.

As shown in FIG. 8, the sending unit 30 further includes:

a third sending subunit 303, configured to use, according to the second correspondence in the second dynamic network information segment

The message is sent from the network device of the source host to the network device of the target host.

a fourth sending subunit 304, configured to: send the packet from the target according to the first dynamic network information segment

The network device of the host is sent to the target host.

As shown in FIG. 9, the terminal 100 further includes:

The encapsulating unit 40 is configured to: when the packet is sent from the network device of the source host to the network device of the target host, encapsulate the packet into a packet format of the second network type. Specifically, if the second network type is VXLAN, the packet is sent from the network device of the source host to the network device of the target host, and the format of the packet is encapsulated into a VXLAN packet; the original packet format is a VLAN. Therefore, packets of the VLAN are encapsulated into VXLAN packets.

As shown in FIG. 10, the terminal 100 further includes:

The decapsulation unit 50 is configured to decapsulate the packet into a packet format of the first network type if the packet is sent from the network device of the source host to the network device of the target host. Specifically, when the packet is sent from the network device of the source host to the network device of the target host, the packet of the network device that enters the target host is a VXLAN packet. Therefore, the packet of the VXLAN needs to be decapsulated into a VLAN. The message is sent to the target host by the network device of the target host.

In hardware implementation, the above first creating unit 10, second creating unit 20, sending unit 30, etc. may be embedded in or independent of the data processing device in hardware, or may be stored in the memory of the data processing device in software. So that the processor calls to perform the operations corresponding to the above units. The processor can be a central processing unit (CPU), a microprocessor, a microcontroller, or the like.

FIG. 11 is a schematic structural diagram of an apparatus for implementing an OVERLAY network according to the present invention. As shown in FIG. 11, it may include: an input device 99, an output device 88, a transceiver device 77, a memory 66, and a processor 55, wherein:

The input device 99 is configured to receive input data of an external access control device. In a specific implementation, the input device 99 according to the embodiment of the present invention may include a keyboard, a mouse, a photoelectric input device, a sound input device, a touch input device, a scanner, and the like.

The output device 88 is configured to output output data of the access control device to the outside. In the specific implementation,

The output device 88 described in the embodiments of the present invention may include a display, a speaker, a printer, and the like.

The transceiver device 77 is configured to send data to other devices or connect from other devices through a communication link.

Receive data. In a specific implementation, the transceiver device 77 of the embodiment of the present invention may include a transceiver device such as a radio frequency antenna.

The memory 66 is configured to store applications and data that implement an OVERLAY network. In a specific implementation, the memory 66 of an embodiment of the present invention may be a system memory such as volatile (such as RAM), non-volatile (such as ROM, flash memory, etc.), or a combination of both. In a specific implementation, the memory 66 of the embodiment of the present invention may also be an external memory outside the system, such as a magnetic disk, an optical disk, a magnetic tape, or the like.

The processor 55 is configured to run an application in the memory. In a specific implementation, the processor 55 is a control center of the device, and connects various parts of the entire device by using various interfaces and lines, and executes various functions and processing data of the device by running an application stored in the memory 66, thereby Conduct overall monitoring. The processor 55 described above performs the following operations:

If the host is added, the first dynamic network information segment between the host and the network device is created; the second dynamic network information segment between the network devices is created; and if the packet is sent, according to the first dynamic network information segment and the The second dynamic network information segment controls the message to be sent from the network device of the source host to the network device of the target host.

Further, the first dynamic network information segment includes a first correspondence between the host and the network device, a first network type, and a first network identifier; and if the packet is sent, according to the first dynamic network information segment The network device that controls the sending of the packet from the network device of the source host to the target host includes:

Sending, according to the first correspondence in the first dynamic network information segment, the packet from a source host to a network device corresponding to the source host; the network device of the source host sends the packet to The network device of the target host.

Further, the second dynamic network information segment includes a second correspondence between the network devices, a second network type, and a second network identifier. If the packet is sent, the second dynamic network information segment is controlled according to the second dynamic network information segment. The network device that sends the message from the network device of the source host to the target host includes:

And sending, according to the second correspondence in the second dynamic network information segment, the packet from the network device of the source host to the network device of the target host; and the packet is sent from the target according to the first dynamic network information segment. The network device of the host is sent to the target host.

Further, the processor 55 also performs the following operations:

It can be understood by those skilled in the art that the implementation device of the OVERLAY network shown in FIG. 11 does not constitute a limitation on the specific configuration of the implementation device of the OVERLAY network. In other embodiments, the implementation device of the OVERLAY network may include a ratio More or fewer parts, or some parts, or different parts. For example, in some embodiments, the implementation device of the OVERLAY network may include only the memory and the processor. In such an embodiment, the structure and function of the memory and the processor are the same as those in the embodiment shown in FIG. .

The present invention provides a computer readable storage medium having stored one or more programs, the one or more programs being executable by one or more processors to implement the following steps:

Further, the first dynamic network information segment includes a first correspondence between the host and the network device, a first network type, and a first network identifier; and if the packet is sent, according to the first dynamic network information segment The step of controlling the sending of the packet from the network device of the source host to the network device of the target host includes:

Further, the second dynamic network information segment includes a second correspondence between the network devices, a second network type, and a second network identifier. If the packet is sent, the second dynamic network information segment is controlled according to the second dynamic network information segment. The step of sending the message from the network device of the source host to the network device of the target host includes:

Further, the steps further include:

The foregoing storage medium of the present invention includes: a magnetic disk, an optical disk, and a read-only storage memory (Read-Only) Memory, ROM) or random access memory (RAM), etc., which can store various program codes.

The units in all embodiments of the present invention may be implemented by a general-purpose integrated circuit such as a CPU (Central Processing) Unit, central processing unit, or implemented by an ASIC (Application Specific Integrated Circuit).

The steps in the method of the embodiment of the present invention may be sequentially adjusted, merged, and deleted according to actual needs.

The units in the terminal in the embodiment of the present invention may be combined, divided, and deleted according to actual needs.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent person can be easily conceived within the technical scope of the present invention by any person skilled in the art. Modifications or substitutions are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

An implementation method of an OVERLAY network, characterized in that the method comprises:

If a host is added, a first dynamic network information segment between the host and the network device is created;

Creating a second dynamic network information segment between the network devices;

And if the packet is sent, the packet is sent from the network device of the source host to the network device of the target host according to the first dynamic network information segment and the second dynamic network information segment.
The method of claim 1, wherein the first dynamic network information segment comprises a first correspondence between a host and a network device, a first network type, and a first network identifier;

And the sending, according to the first dynamic network information segment, the network device that sends the packet from the network device of the source host to the target host according to the first dynamic network information segment, including:

Sending, according to the first correspondence in the first dynamic network information segment, the packet from a source host to a network device corresponding to the source host;

The network device of the source host sends the message to the network device of the target host.
The method of claim 1, wherein the second dynamic network information segment comprises a second correspondence between the network devices, a second network type, and a second network identifier;

And if the sending the packet, the network device that sends the packet from the network device of the source host to the target host according to the second dynamic network information segment includes:

Sending, according to the second correspondence in the second dynamic network information segment, the packet from the network device of the source host to the network device of the target host;

Sending the message from the network device of the target host to the target host according to the first dynamic network information segment.
The method of any of claims 1-3, wherein the method further comprises:

If the packet is sent from the network device of the source host to the network device of the target host, the packet is encapsulated into a packet format of the second network type.
The method of any of claims 1-3, wherein the method further comprises:

And if the packet is sent from the network device of the source host to the network device of the target host, the packet is decapsulated into a packet format of the first network type.
A terminal, wherein the terminal comprises:

The first creating unit is configured to create a first dynamic network between the host and the network device if the host is added

Information segment

a second creating unit, configured to create a second dynamic network information segment between the network device and the network device;

And a sending unit, configured to, according to the first dynamic network information segment and the second dynamic network information segment, control the sending of the packet from the network device of the source host to the network device of the target host according to the first dynamic network information segment.
The terminal according to claim 6, wherein the first dynamic network information segment comprises a first correspondence between a host and a network device, a first network type, and a first network identifier;

The sending unit includes:

a first sending subunit, configured to send the packet from a source host to a network device corresponding to the source host according to the first correspondence in the first dynamic network information segment;

And a second sending subunit, wherein the network device used by the source host sends the packet to a network device of the target host.
The terminal according to claim 6, wherein the second dynamic network information segment comprises a second correspondence between the network device and the network device, a second network type, and a second network identifier;

The sending unit includes:

a third sending subunit, configured to send the packet from the network device of the source host to the network device of the target host according to the second correspondence in the second dynamic network information segment;

And a fourth sending subunit, configured to send the packet from the network device of the target host to the target host according to the first dynamic network information segment.
The terminal according to any one of claims 6-8, wherein the terminal further comprises:

The encapsulating unit is configured to: when the packet is sent from the network device of the source host to the network device of the target host, encapsulate the packet into a packet format of the second network type.
The terminal according to any one of claims 6-8, wherein the terminal further comprises:

And a decapsulation unit, configured to decapsulate the packet into a packet format of the first network type, if the packet is sent from a network device of the source host to a network device of the target host.
An implementation device of an OVERLAY network, characterized in that the device comprises: a memory and a processor;

a memory for storing applications and data that implement an OVERLAY network;

a processor for running an application stored in the memory to perform the following operations:

If a host is added, a first dynamic network information segment between the host and the network device is created;

Creating a second dynamic network information segment between the network devices;

And if the packet is sent, the packet is sent from the network device of the source host to the network device of the target host according to the first dynamic network information segment and the second dynamic network information segment.
The device according to claim 11, wherein the first dynamic network information segment comprises a first correspondence between a host and a network device, a first network type, and a first network identifier;

And the sending, according to the first dynamic network information segment, the network device that sends the packet from the network device of the source host to the target host according to the first dynamic network information segment, including:

Sending, according to the first correspondence in the first dynamic network information segment, the packet from a source host to a network device corresponding to the source host;

The network device of the source host sends the message to the network device of the target host.
The device according to claim 11, wherein the second dynamic network information segment comprises a second correspondence between the network devices, a second network type, and a second network identifier;

And if the sending the packet, the network device that sends the packet from the network device of the source host to the target host according to the second dynamic network information segment includes:

Sending, according to the second correspondence in the second dynamic network information segment, the packet from the network device of the source host to the network device of the target host;

Sending the message from the network device of the target host to the target host according to the first dynamic network information segment.
The device of any of claims 11-13, wherein the processor further performs the following operations:

If the packet is sent from the network device of the source host to the network device of the target host, the packet is encapsulated into a packet format of the second network type.
The device of any of claims 11-13, wherein the processor further performs the following operations:

And if the packet is sent from the network device of the source host to the network device of the target host, the packet is decapsulated into a packet format of the first network type.
A computer readable storage medium, characterized in that the computer readable storage medium stores one or more programs, the one or more programs being executable by one or more processors to implement the steps of:

If a host is added, a first dynamic network information segment between the host and the network device is created;

Creating a second dynamic network information segment between the network devices;

And if the packet is sent, the packet is sent from the network device of the source host to the network device of the target host according to the first dynamic network information segment and the second dynamic network information segment.
The computer readable storage medium according to claim 16, wherein the first dynamic network information segment comprises a first correspondence between a host and a network device, a first network type, and a first network identifier;

The step of, if the packet is sent, the network device that is sent from the network device of the source host to the network device of the target host according to the first dynamic network information segment, includes:

Sending, according to the first correspondence in the first dynamic network information segment, the packet from a source host to a network device corresponding to the source host;

The network device of the source host sends the message to the network device of the target host.
The computer readable storage medium according to claim 16, wherein the second dynamic network information segment comprises a second correspondence between the network devices, a second network type, and a second network identifier;

And the step of: sending, according to the second dynamic network information segment, the network device that is sent from the network device of the source host to the network device of the target host according to the second dynamic network information segment:

Sending, according to the second correspondence in the second dynamic network information segment, the packet from the network device of the source host to the network device of the target host;

Sending the message from the network device of the target host to the target host according to the first dynamic network information segment.
The computer readable storage medium of any of claims 16-18, wherein the step further comprises:

If the packet is sent from the network device of the source host to the network device of the target host, the packet is encapsulated into a packet format of the second network type.
The computer readable storage medium of any of claims 16-18, wherein the step further comprises:

And if the packet is sent from the network device of the source host to the network device of the target host, the packet is decapsulated into a packet format of the first network type.