WO2022037322A1 - Network topology management system and method for home networking - Google Patents

Abstract

The present invention relates to the technical field of home networking, and provides a network topology management system and method for home networking. In said system, a main routing device works in a routing mode, and the main routing device provides a wired and/or wireless link channel for various terminal devices and sub-routing devices inside a home network to access the home network; the sub-routing devices work in a bridging mode and establish, for a downlink sub-routing device and/or a subordinate terminal device which correspondingly complete access, a link channel with the main routing device in a wired and/or wireless manner; and the sub-routing devices further establish a dedicated management channel with the main routing device for the sub-routing devices to report information of the subordinate terminal device and/or information of the downlink sub-routing device forming an access relationship with the sub-routing devices. The present invention can present a complete and intuitive home network topology structure to users, so that the users can operate and manage devices in the network topology by means of complete topology information.

Description

A system and method for network topology management of home networking technical field

The present invention relates to the technical field of home networking, in particular to a system and method for network topology management of home networking.

Background technique

With the development of society and the improvement of people's quality of life, broadband has become an indispensable part of family life. More and more work and life depend on the network. Various smart IoT devices in the home need to be connected to the home network. Therefore, a Wireless routers can no longer meet the needs of users with large family areas and complex home decoration environments. Networking through the main routing device + sub-routing device has become a common method for home network extension. A home networking device is generally composed of a main routing device + n sub-routing devices. Between the main routing device and the sub-routing device, the sub-routing device and the sub-routing device are connected by wired, WiFi or other means, and between the main routing device, the sub-routing device, and the smart terminals hanging up and down the main/sub-routing device. The topology structure will form a multi-level home network topology. With the increasing number of types of smart terminals, how users can easily and intuitively understand and manage the home network topology through a visual interface has become an urgent problem to be solved.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is that with the gradual maturity of home networking technology, networking through main routing device + sub-routing device has become a common method for home network extension. However, how to manage the complete topology information of the main and sub-routing devices and the connected terminal devices in the home networking network is a problem that needs to be solved at present.

In the prior art, the main routing device can obtain information such as the device IP addresses, MAC addresses and other information of all the attached terminals through the dynamic host configuration protocol DHCP request message for obtaining the addresses of the attached devices, but cannot obtain complete network topology information. It is unknown through which sub-routing device the connected terminal device is connected, and whether the connected terminal device or the sub-routing device is requesting address allocation.

The present invention adopts following technical scheme:

In the first aspect, the present invention includes a system for home networking network topology management, the system includes a main routing device, one or more sub-routing devices, and one or more terminal devices, and the sub-routing devices are wired or wireless. , access the main routing device or other sub-routing devices located on its upstream, and the terminal device accesses the main routing device or sub-routing device through wired or wireless means, specifically:

The main routing device works in routing mode, and the main routing device provides wired and/or wireless link channels for each terminal device and sub-routing device inside the home network to access the home network; wherein, the main routing device assigns IP to the sub-routing device and the terminal device. address;

The bridge mode in which the sub-routing device works, establishes a link channel with the main routing device through wired and/or wireless means for the downlink sub-routing device and/or the connected terminal device that has completed the access; the sub-routing device and the main routing device A dedicated management channel is also established therebetween for the sub-routing device to report the information of the connected terminal device and/or the information of the downlink sub-routing device that forms an access relationship with it.

Preferably, each entry in the networking topology information database is information of a device in the home networking device, and the device information includes device MAC address, device type, device name, device IP address, device access mode, and access interface. One or more of name, device access status, uplink device MAC address and downlink device MAC address; the devices include sub-routing devices and terminal devices;

Among them, the device type, device access mode, access interface name, device access status, and uplink device MAC address/downlink device MAC address are sent to the main routing device by the sub-routing device by transmitting private protocol messages through the dedicated management channel , and other information is obtained by the main routing device from the DHCP exchange message.

Preferably, after the sub-routing device obtains the device IP address allocated by the main routing device, the method further includes:

The sub-routing device sends private protocol messages to the main routing device through the dedicated management channel;

After receiving the private protocol message of the sub-routing device, the main routing device uses the device MAC address of the sub-routing device as a search key to search in the networking topology information database; Describe the information of the sub-routing device; if found, update the device type corresponding to the record of the sub-routing device in the networking topology information database to the sub-routing type;

After the sub-routing device is successfully registered, check whether the local device database of the sub-routing device has access to the device, and if so, send the device MAC address and device access mode of the sub-routing device to the main router through the dedicated management channel. The device, the main routing device updates the networking topology information database; wherein, the attached devices include sub-routing devices and/or terminal devices.

Preferably, when the terminal device or the sub-routing device obtains the IP address from the main routing device, the system further includes:

The main routing device obtains one or more of the device IP address, device MAC address and device name of the sub-routing device or terminal according to the DHCP exchange message with the sub-routing device or terminal device;

The main routing device uses the device MAC address of the sub-routing device or terminal device as a search key to search for the corresponding sub-routing device or terminal device in the networking topology information database; If it is not found, a record will be added to the network topology information database to record the corresponding information.

Preferably, after obtaining the IP address, each sub-routing device sends a link layer discovery protocol packet to the neighboring device through the WAN side interface. The information obtained in the link layer discovery protocol message includes: device MAC address and device type; when the uplink device is a sub-routing device, the uplink device stores the MAC address according to the device MAC address in the link layer discovery protocol message. Find the access interface name of the corresponding sub-routing device in the address learning table, and write the device MAC address, device type and the found access interface name into the local device database; the upstream device is the main routing device When the uplink device searches for the access interface name of the corresponding sub-routing device in the address learning table storing the MAC address according to the device MAC address in the link layer discovery protocol message, and stores the device MAC address, device type and search The outgoing access interface name is written into the networking topology information database;

The local attached device database maintained by each sub-routing device is used when the sub-routing device reports the information of the attached terminal device and/or the information of the downstream sub-routing device that forms an access relationship with it through private protocol messages.

Preferably, when the terminal device accesses in a wired manner and the corresponding terminal device does not support the link layer discovery protocol message, each main routing device or sub-routing device also obtains the access master according to the MAC address access message. Information about the terminal devices attached to the routing device or sub-routing device, including:

If the sub-routing device receives the MAC address access message, it searches the local attached device database to see whether the interface carried in the corresponding MAC address access message has been connected to the sub-routing device; if the main routing device receives the MAC address access After the message, find out whether the interface carried in the corresponding MAC address access message has accessed the sub-routing device from the networking topology information database;

If it has been accessed, the MAC address access message is not processed, and the device corresponding to the device MAC address is not a directly connected device;

If it has not been accessed, it indicates that the device information carried in the MAC address access message corresponds to a directly connected terminal device, and the device information carried in the MAC address access message is stored in the local connected device. In the device database or the networking topology information database.

Preferably, each sub-routing device directly saves the corresponding device information in the local connected device database according to the device MAC address and the name of the WiFi interface connected in the WiFi online and offline message after receiving the WiFi online and offline message;

After receiving the WiFi online and offline message, the main routing device directly saves the corresponding device information in the networking topology information database according to the device MAC address and the name of the connected WiFi interface in the WiFi online and offline message.

Preferably, when the terminal device accesses the sub-routing device in a wired or wireless manner, the system further includes:

The sub-routing device obtains the device MAC address and device access mode of the terminal device, and the sub-routing device sends the directly connected terminal device MAC address, device access mode and the sub-routing device's own device MAC address through the dedicated management channel. Send to the main routing device;

After receiving the information sent by the sub-routing device, the main routing device uses the device MAC address of the terminal device carried in the information content as a search key to search in the networking topology information database to determine whether there is corresponding device information; If found, add a record in the networking topology information database and add the device MAC address of the corresponding terminal device, the device access mode, and the device MAC address of the sub-routing device itself into the networking topology information database; Then the confirmation of the device access mode and the device MAC address of the sub-routing device itself is completed.

Preferably, when a device on the sub-routing device or the main routing device goes offline, an event notification that the device goes offline is received, wherein the device includes a terminal device and/or a sub-routing device, and the system further includes:

If the sub-routing device receives the event notification that the device goes offline, it determines whether the sub-routing device that receives the event notification that the device goes offline has obtained the IP address assigned by the main route; if it has obtained the IP address, it will go offline The device MAC address of the device is sent to the main routing device; the corresponding offline device information is deleted in the local device database of the sub-routing device;

If the main routing device receives the event notification that the device goes offline, the device MAC address of the device is used as a search key to search in the networking topology information database and delete the device information, if the device type of the offline device is For sub-routing devices, the main routing device traverses the networking topology information database, and deletes the information of the sub-routing devices whose MAC address is the device; wherein, the sub-routing device information includes sub-routing devices and/or terminal devices.

In a second aspect, the present invention also provides a method for home networking network topology management, which is applied to the system for home networking network topology management described in the first aspect, and the method includes:

For each sub-routing device and terminal device in the home networking network, the main routing device obtains the downstream sub-routing device information and/or the attached terminal device information of each sub-routing device through the dedicated management channel established with the sub-routing device , and also obtain one or more of the device IP address, device MAC address, and device name of the sub-routing device or terminal device from the DHCP exchange message;

According to the MAC address of the device, the content obtained from the dedicated management channel and the content obtained in the DHCP exchange message are combined to generate a complete home network topology.

In a third aspect, the present invention further provides an apparatus for managing a network topology in a home networking, which is used to implement the method for managing a network topology in a home networking described in the second aspect, and the apparatus includes:

at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the processor for The home networking network topology management method described in the second aspect is executed.

In a fourth aspect, the present invention also provides a non-volatile computer storage medium storing computer-executable instructions, the computer-executable instructions being executed by one or more processors for completing the second The home networking network topology management method described in the aspect.

The invention provides a system and method for home networking network topology management, which can present a complete and intuitive home network topology structure to users, and is convenient for users to operate and manage devices in the network topology through complete topology information.

Description of drawings

In order to describe the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts.

1 is a home networking topology diagram of a home networking network topology management provided by an embodiment of the present invention;

2 is a schematic diagram of fields of a networking topology information database for home networking network topology management provided by an embodiment of the present invention;

FIG. 3 is a related packet capture content of a home networking network topology management provided by an embodiment of the present invention;

FIG. 4 is a related packet capture content of a home networking network topology management provided by an embodiment of the present invention;

5 is a schematic flowchart of a method for managing network topology in a home networking according to an embodiment of the present invention;

6 is a schematic flowchart of a method for managing network topology in a home networking according to an embodiment of the present invention;

7 is a system block diagram of a home networking network topology management provided by an embodiment of the present invention;

FIG. 8 is a management process of adding a device to a home network in a method for managing a network topology of a home networking according to an embodiment of the present invention;

FIG. 9 is a management flow of device acquisition of IP addresses in a method for home networking network topology management provided by an embodiment of the present invention;

10 is a management flow of a device leaving a home network in a method for managing network topology in a home networking provided by an embodiment of the present invention;

11 is a flow chart of sub-routing device registration and heartbeat maintenance management in a method for home networking network topology management provided by an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of an apparatus for network topology management of a home networking according to an embodiment of the present invention.

detailed description

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

In the description of the present invention, the orientation or positional relationship indicated by the terms "inner", "outer", "longitudinal", "lateral", "upper", "lower", "top", "bottom", etc. are based on the drawings The orientation or positional relationship shown is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Embodiment 1:

Embodiment 1 of the present invention provides a system and method for home networking network topology management. As shown in FIG. 1 , it is a networking diagram of a system for network topology management of a home networking. The system includes a main routing device, one or more sub-routing devices, and one or more terminal devices. The sub-routing device is connected to the main routing device or other sub-routing devices located on its upstream through wired or wireless means. The terminal device is connected to the main routing device or sub-routing device through wired or wireless means, specifically:

The main routing device works in routing mode, and the main routing device provides wired and/or wireless link channels for each terminal device and sub-routing device inside the home network to access the home network; wherein, the main routing device assigns IP to the sub-routing device and the terminal device. address;

The bridge mode in which the sub-routing device works, establishes a link channel with the main routing device through wired and/or wireless means for the downlink sub-routing device and/or the connected terminal device that has completed the access; the sub-routing device and the main routing device There is also an exclusive management channel (based on the IP address assigned by the main routing device to the sub-routing device), which is used for the sub-routing device to report the information of the connected terminal device and/or the downlink sub-routing device that forms an access relationship with it. Information about the routing device.

The embodiments of the present invention provide a system for home networking network topology management, which can present a complete and intuitive home network topology structure to users; users can operate and manage devices in the network topology through complete topology information. It overcomes the problem in the prior art that the main routing device can obtain the device IP address, device MAC address and other information of all the attached terminals from the dynamic host configuration protocol DHCP request message for obtaining the address of the attached device, but cannot obtain the complete network. Topology information, such as the following sub-routing device through which the terminal device is connected is unknown, and whether it is the sub-routing device or the sub-routing device that requests address allocation. Among them, the Dynamic Host Configuration Protocol (Dynamic Host Configuration Protocol, abbreviated as: DHCP) is a network protocol of a local area network, which refers to a range of IP addresses controlled by the server, and the client can automatically obtain the IP address and sub-address assigned by the server when logging in to the server. netmask.

In the system of the embodiment of the present invention, when the terminal device accesses the sub-routing device in a wired or wireless manner, the system further includes:

The sub-routing device obtains the device MAC address and device access mode (including wireless and wired mode) of the terminal device. The MAC address of the device is sent to the main routing device through the dedicated management channel; the specific implementation can refer to the existing related protocol messages, and based on the sub-routing device and the main routing device knowing the corresponding transmission protocol, the message field is customized. mode, completes the transmission of the device MAC address of the terminal device, the device access mode, and the device MAC address information of the sub-routing device itself.

After receiving the information sent by the sub-routing device, the main routing device uses the device MAC address of the terminal device carried in the information as a search key to search in the networking topology information database (for example, directly in the networking topology information database). If there is no corresponding device information, add a record to the network topology information database and add the device MAC address, device access mode and sub-routing device of the corresponding terminal device. Its own device MAC address (for example, including the sub-router's own MAC address) is added to the networking topology information database; if it is found, the device access mode and the sub-router's own device MAC address are confirmed. The device MAC address of the terminal device, the device access mode, and the device MAC address of the sub-routing device are composed of key information content as a record. When displaying the networking topology information, it can be recorded according to the networking topology information database. A number of corresponding records are generated to complete the network generation. The purpose of the above confirmation is that if part of the information has changed, it is necessary to make a security judgment (this is not an improvement point of the present invention, so it will not be repeated), and to determine whether to update the records in the networking topology information database. content.

In the system of the embodiment of the present invention, when the terminal device or the sub-routing device obtains the IP address from the main routing device, the system further includes:

The main routing device obtains one or more of the device IP address, device MAC address and device name of the sub-routing device or terminal device according to the DHCP exchange message with the sub-routing device or terminal device;

The main routing device uses the device MAC address of the sub-routing device or terminal device as a search key to search for the corresponding sub-routing device or terminal device in the networking topology information database; If it is not found, a record will be added to the network topology information database to record the corresponding information.

In this embodiment of the present invention, the networking topology information database is usually maintained locally on the main routing device; however, as an optional solution, it is not excluded to store and store the networking topology information database through an independent storage device. maintain. As shown in Figure 2, a schematic diagram of the content structure of a piece of topology information in the networking topology information database, each entry in the networking topology information database is the information of a device in the home networking device, and the device information includes the device MAC address, One of device type, device name, device IP address, device access method, access interface name, device access status (including device online status and device offline status), uplink device MAC address and downlink device MAC address, or It should be noted that when the corresponding information is specifically implemented, it serves for the topology network to be displayed and the device subject. The network construction requirements between the sub-routers can be completed, and which one to choose depends on the network requirements and usage habits; and the access interface name is a device (especially referring to the main routing device and the sub-routing device) There are multiple In the case of an access interface (its expression form can be a string or a series of numbers, specifically in other embodiments of the present invention, it can also be expressed as the name of the WiFi interface, the interface number in the ARP message, etc.), it is suitable for complex The network is sorted out clearly. Among the above options, the device access method is optional and does not substantially affect the networking relationship.

Among them, the device type, device access method, access interface name, device access status, and uplink device MAC address/downlink device MAC address are sent to the main routing device by means of private protocol messages transmitted through the dedicated management channel, and other information The device MAC address, device IP address, and device name of the terminal device are obtained from the DHCP exchange message. The DHCP exchange message is shown in Figure 3 below. The DHCP Request message sent by the terminal device or sub-routing device to the main route is as follows. The message contains the device MAC address (Client MAC address) and device name ( Host Name). As shown in Figure 4, the DHCP ACK message returned by the main route to the sub-router or terminal device is as follows. The message carries the device MAC address (Client MAC address) and device IP address (Your Client IP address) of the end device or sub-route device address) and device type (Option 60vendor class identifier).

In the embodiments of the present invention and other embodiments, after summarizing the acquisition methods of the related device information, they are presented as follows:

Device MAC address: It can be obtained through Link Layer Discovery Protocol (LLDP) packets, WiFi online and offline messages, or ARP packets.

Device type: The device type of the sub-route can be obtained from the LLDP message, or it can be analyzed and judged from the registration message sent by the sub-route to the main route.

Device name: It can be obtained from the DHCP message.

Device IP address: It can be obtained from ARP message or from DHCP message.

Device access mode and access interface name: You can determine the device access mode and access interface name by looking up the network interface corresponding to the MAC address in the MAC address learning table.

Upstream MAC address: When reporting the directly attached device for the sub-router through a private protocol, fill in its own MAC address in the message, and the main route can obtain the upstream device MAC corresponding to the attached device according to the message.

In the embodiment of the present invention, the LLDP message is a layer-2 message that advertises the device's own information to neighbors, and the DHCP message is a message for the sub-routing device and the terminal device to obtain an address from the DHCP server. Route device communication.

Example 2:

An embodiment of the present invention provides a method for home networking network topology management. The method is performed based on the system for home networking network topology management proposed in Embodiment 1. As shown in FIG. 5 , the method includes:

In step 201, for each sub-routing device and terminal device in the home networking network, the main routing device obtains downlink sub-routing device information and/or downlink sub-routing device information of each sub-routing device through a dedicated management channel established with the sub-routing device information of the connected terminal device, and also obtain one or more of the device IP address, device MAC address, and device name of the sub-routing device or the terminal device from the DHCP exchange message.

In step 202, according to the device MAC address, the content obtained by the dedicated management channel and the content obtained in the DHCP exchange message are combined to generate a complete home network networking topology.

The embodiments of the present invention provide a system for home networking network topology management, which can present a complete and intuitive home network topology structure to users; users can operate and manage devices in the network topology through complete topology information.

When the main routing device receives a DHCP request from a sub-router or an attached terminal device, it only knows that the sub-routing device or attached terminal device is an internal device in the network, but does not know whether the device is directly attached to the main routing device or not. On other sub-routing devices, the main routing device cannot know the topology relationship among the main routing device, sub-routing devices, and terminal devices.

Each main/sub-routing device can determine its directly attached device in several ways:

The first method: After each sub-routing device obtains an IP address, the device access management module will send LLDP packets to the neighbor device through the WAN side interface. When the upstream device of the sub-routing device (the upstream device may be a sub-routing or After the device access management module in the main route) receives the LLDP message, it can obtain the following information from the LLDP message: device MAC address (chassis ID), device type (System Description), where the device type can be customized. If it is "Agent", it indicates that the device is a sub-routing device. Other terminal devices that support the LLDP protocol (not all terminal devices support LLDP) will also send LLDP packets. The device type is defined by the device manufacturer. The device type of the non-Agent device is obtained from the DHCP message. The uplink device can find out which interface the sub-routing device accesses from in the MAC address learning table according to the device MAC address in the LLDP message, and the device access management module writes the device MAC address, device type, and access interface name into the local In the corresponding database (that is, the networking topology information database of the main routing device and the local attached device database of the sub-routing device). When an upstream device receives an LLDP message sent by a sub-route or terminal device, it indicates that the sub-route device is the device directly attached to the upstream device. Topological relationships of some terminal devices and their upstream devices. Therefore, there are further the second and third points proposed below, which are used to make up for the deficiencies and possible omissions of the LLDP message in establishing a complete local attached device database.

The second method: the terminal device directly connected to WiFi access will notify the device access management module through the WiFi log-off and log-off message. line), the name of the connected WiFi interface (that is, a specific form of the name of the access interface), after receiving the message, the sub-route or main route device directly saves the device information in the local corresponding database without filtering.

The third way: when the terminal device is connected by wire, and the corresponding terminal device does not support link layer discovery protocol packets, the device access management module of each main routing device/sub-routing device will also use the MAC address. The access message (for example, it can be used in the ARP message, and the ARP message does not carry the interface number (that is, the specific representation of the access interface name), but the main routing device/sub-routing device can infer the corresponding MAC address based on which interface receives the ARP message. interface number) to obtain the information of the terminal device accessing the device, including the MAC address of the device and the name of the access interface, but the device information obtained from the MAC address access message of the device is not all that of the main/sub-routing device. The device is directly connected to the device. Some devices are accessed through the next-level sub-route. Therefore, a filter needs to be performed. After receiving the MAC address access message, check whether the corresponding interface (that is, the access interface name) is from the local corresponding database. If the sub-routing device has been accessed and the MAC address access message has not been processed, the device corresponding to the device MAC address is not a directly connected device. If it has not been accessed, it indicates that the device information carried in the MAC address access message corresponds to a directly connected terminal device, and the device information carried in the MAC address access message is stored in the local connected device. in the device database.

Among them, the first mode, the second mode and the third mode can be appropriately combined in the specific implementation process, and the solution after the combination usually needs to deduplicate the acquired data; wherein, the second mode makes up for the When the connected device connected wirelessly does not support LLDP packets, the third method further makes up for the possible omissions of the first method, and uses the analysis result of the first method as the filtering basis, which improves the processing efficiency. effectiveness. As far as the embodiment of the present invention is concerned, it is not excluded that in certain scenarios, any one of the above-mentioned first method or the second method can be directly applied to complete the judgment of the directly connected device, and the corresponding solution also belongs to the protection scope of the present invention. Inside.

In the embodiment of the present invention, when a terminal device is connected to the sub-routing device or the main routing device, the sub-routing device or the main routing device receives the online message of the terminal device, and the method specifically includes:

If the sub-routing device is accessed by a terminal device, the sub-routing device obtains the MAC address of the terminal device, the device access method, and the MAC address of the sub-routing device itself, and the sub-routing device determines whether it has an IP address assigned to it. If an IP address has not been assigned by the main routing device, the local device database will be updated; if an IP address has been assigned, the acquired terminal device information and its own MAC address will be sent to the main routing device through a dedicated management channel. It should be noted here that in the specific implementation process, the sub-routing device determines whether it is assigned an IP address, and if it has not been assigned an IP address by the main routing device, it updates the local device database. After the sub-routing device determines to obtain the IP address assigned by the main routing device, it will report the updated local device database to the main routing device as soon as possible. Wherein, in the implementation process, the database of all locally attached devices may be reported, or the device information updated before the IP address assigned by the main routing device is obtained. In this embodiment of the present invention, the locally attached device database in the sub-routing device is usually also reported to the main routing device according to a preset policy, and the corresponding policy includes periodic reporting, or, according to local updates Report after the number of times reaches the preset number, or a combination of the above two methods, and so on.

After receiving the information sent by the sub-routing device, the main routing device uses the device MAC address of the terminal device as a search key to search in the networking topology information database; if the terminal device is found, it updates the device access mode and uplink. Access device MAC (that is, the MAC address of the sub-route); if the terminal device is not found, add a new record in the networking topology information database, and write the terminal device MAC, device access mode and uplink connection. Enter the device MAC.

In the embodiment of the present invention, a terminal device or a sub-routing device is also involved, and the method process for obtaining an IP address, as shown in FIG. 6 , includes:

In step 301, the terminal device or the sub-routing device sends a request message for acquiring the device IP address of the terminal device to the main routing device.

In step 302, the main routing device parses the device IP address, device MAC address and device name related information from the DHCP exchange message, and searches in the networking topology information database according to the device MAC address; wherein, the device IP address The address, device MAC address and device name parameters include those belonging to sub-routing devices and/or those belonging to terminal devices.

In step 303, if found, add the device IP address and device name of the terminal device to the networking topology information database; if not found, then add a new record, write the device IP address, MAC address and device name One or more of the names.

In the embodiment of the present invention, it also relates to receiving an event notification that the device goes offline when a device on the sub-routing device or the main routing device goes offline, wherein the device includes a terminal device and/or a sub-routing device, and the method further includes:

After the sub-routing device or the main routing device receives the event notification that the device goes offline, it updates the local corresponding database of the device MAC address of the offline device. Delete in the local corresponding database. A column of offline state parameter attributes may also be added to the local corresponding database, and when the local corresponding database is regularly maintained, if the corresponding offline implementation exceeds a preset threshold, deletion processing is performed. The advantage of this is that, if the corresponding offline device is offline due to fault restart or power failure, when the device is brought back online, the target information of the corresponding offline device can be matched to the local corresponding database more quickly.

If the sub-routing device receives the event notification that the device goes offline, it determines whether the sub-routing device that receives the event notification that the device goes offline has obtained the IP address assigned by the main route; if it has obtained the IP address, it will go offline The device MAC address of the device is sent to the main routing device; the corresponding offline device information is deleted in the local device database of the sub-routing device;

If the main routing device receives the event notification that the device goes offline, the device MAC address of the device is used as a search key to search in the networking topology information database and delete the device information, if the device type of the offline device is For sub-routing devices, the main routing device traverses the networking topology information database, and deletes the information of the sub-routing devices whose MAC address is the device; wherein, the sub-routing device information includes sub-routing devices and/or terminal devices.

In the embodiment of the present invention, the method also includes a heartbeat maintenance and management process of a sub-routing device, specifically:

After successfully registering with the main routing device, the first sub-routing device periodically sends a heartbeat message to the main routing device.

If the main routing device does not receive the heartbeat message of the first sub-routing device within the preset time, it will store the relevant information of the first sub-routing device and each device connected to the first sub-routing device in the networking topology information database. delete. That is, all records in which the MAC address of the upstream device is the same as the MAC address of the device of the first sub-routing device are deleted. Among them, the "first sub-routing device" in the description is only a "first" label added for the convenience of quoting in the process of content expansion, and has no special limiting meaning in the specific implementation identification process.

Example 3:

As shown in FIG. 7 , it is a system block diagram of a home networking network topology management applicable to an embodiment of the present invention. For the convenience of expression and in order to be more compatible with the actual program implementation, many functional modules are introduced into the present invention to describe the functions of the main routing device and the sub-routing device.

The device access management module, DHCP Server module, networking management Server module and networking topology information database of the main routing device are composed of four parts. The device access management module, DHCP Client module, networking management Client module and The local device database is composed of four parts. The DHCP Server module of the main routing device assigns IP addresses to the sub-routing devices and terminal devices of the home network; the device access management module of the main routing device manages wired and wireless devices that directly access the device through wired and wireless; The networking management Server module of the routing device is used to communicate with the networking management Client module of the sub-routing device to manage sub-routing devices and terminal devices that are not directly connected to the device; the DHCP Client module of the sub-routing device The DHCP Server module obtains the address of the management connection, and the sub-routing device uses this address to establish socket communication with the main routing device; the device of the sub-routing device is connected to the management module to manage the sub-routing devices that directly access the device through wired and/or wireless means and/or terminal device, and tell the device information to the networking management client module of the sub-routing device; the networking management client module of the sub-routing device sends the device information directly connected to the device to the group of the main routing device through the dedicated management channel. Network management server module. Next, the core management method process involved in Embodiment 1 and Embodiment 2 of the present invention will be described based on the functional module architecture proposed in Embodiment 3 of the present invention through Embodiment 4-Embodiment 7.

Example 4:

As shown in FIG. 8 , the figure is a device joining management process involved in a method for managing a network topology of a home networking.

In step 401, when a device in the sub-routing device/main routing device is connected in a wired or wireless manner, the device access management module of the sub-routing device/main routing device will receive a corresponding device online message.

In step 402, different processing flows are performed respectively according to whether the sub-routing device or the main routing device receives the device online message. If the subject of the online message is the sub-routing device, step 403 is executed; if the subject of the online message is not the sub-routing device, that is, if the subject of the online message is the main routing device, step 406 is executed.

In step 403, the device access management module of the sub-routing device obtains the MAC address of the access device, the device access mode, and the device MAC address of the device, and sends them to the network management client module of the device by means of internal communication.

In step 404, it is judged for the sub-routing device whether the device has obtained the IP address allocated by the main route. If the IP address allocated by the main route has not been obtained, go to step 408 to update the local device database. At this time, the process ends; otherwise, go to step 408. Step 405.

In step 405 , the networking management Client module sends the information to the networking management Server module of the main router, and then proceeds to step 407 .

In step 406, the device access management module of the main routing device obtains the device MAC address of the access device, the device access mode, and the device MAC address of the device as the uplink device MAC address, and sends it to the network management server of the main routing device. module, and then go to step 407.

In step 407, after receiving the message, the network management server module of the main route uses the device MAC address as a search key to search in the network topology information database. If the device is found, update the device access mode and the MAC address of the upstream device; if not, add a new record in the networking topology information database and write the corresponding device MAC, device access mode and uplink access device MAC address After that, end the process.

In step 408, the local attached device database of the sub-routing device is updated, and the process ends.

Example 5:

As shown in Figure 9, the figure is a schematic diagram of the management process flow of the device acquiring an IP address in a method for network topology management of a home network, including:

In step 501, the DHCP Client module of the terminal device or the sub-routing device obtains the device IP address from the main-routing device.

In step 502, the DHCP Server module of the main routing device parses the device MAC address, device IP address, device name and other information from the DHCP exchange message, and sends the information to the network management of the main routing device through internal message communication Server module.

In step 503, after receiving the message, the network management server module of the main routing device uses the device MAC address as a search key to search in the network topology information database, and if found, adds the device IP address and device name to the group In the network topology information database; if not found, a new record will be added, and related information such as device MAC address, device IP address and device name will be written.

Example 6:

As shown in Figure 10, the figure shows the management process of device leaving in a method for network topology management in a home network, including:

In step 601, when a device on the sub-routing device/main routing device goes offline, the device access management module of the sub-routing device/main routing device will receive an offline message of the device.

In step 602, it is determined whether the main routing device or the sub-routing device receives the offline message of the device. If the judgment result is a sub-routing device, step 603 is performed; otherwise, step 606 is performed.

In step 603, the device access management module of the sub-routing device sends the device MAC address of the offline device to the networking management Client module by means of internal message communication.

In step 604, it is determined whether the sub-router has obtained the IP address assigned to itself by the main routing device before receiving the offline message of the corresponding attached device. If the IP address assigned to the self by the main routing device is obtained, step S605 is performed; otherwise, step 608 is performed.

In step 605 , the networking management client module sends the device MAC address of the corresponding offline device to the networking management server module of the main router, and the process proceeds to step 607 . In this case, the MAC address of the carrying device and the access state information (ie the offline state) of the corresponding device are sent specifically.

In step 606, the device access management module of the main routing device obtains the MAC address of the offline device, the device access mode, and the device MAC address of the device, and sends them to the network management server module of the device.

In step 607, after receiving the message, the network management server module of the main route uses the device MAC address carried in the corresponding message as a search key to search in the networking topology information database and delete the device information, if the offline device The device type of the device is a sub-router, the main routing device traverses the networking topology information database, deletes the device information whose MAC address of the upstream device is this device, and ends the process. Wherein, the attached device information includes sub-routing devices and/or terminal devices.

In step 608, the local attached device database of the sub-routing device is updated, and the process ends.

Example 7:

As shown in FIG. 11 , the figure is a flow of sub-routing device registration and heartbeat maintenance management in a method for home networking network topology management. After the sub-routing device obtains the IP address, the methods include:

In step 701, the networking management Client module of the sub-routing device sends a registration message to the networking management Server module of the main routing.

In step 702, after receiving the registration message of the sub-routing device, the main routing device uses the MAC address of the sub-routing device as a key to search in the networking topology information database. The relevant information of the sub-routing device is added to the information database, including the IP address of the sub-routing device, the MAC address of the sub-routing device, and the information that the device type is "sub-routing"; if found, the device type of the sub-routing device Change it to "subroute".

In step 703, the main routing device replies to the sub-routing device a successful registration message.

In step 704, after the sub-routing device is successfully registered, it is searched whether the local device database of the sub-routing device has access to the device. The main routing device, the main routing device updates the network topology information database, the update process refers to the device access process in FIG. 8, and after the update, step 706 is executed to reply that the sub-route is updated successfully.

In step 707 and step 708, it is a heartbeat message between the sub-router and the main route, and the sub-router regularly sends a heartbeat message to the main route after successfully registering with the main route.

In step 709, if the main route does not receive the heartbeat message of the sub-route within the specified time, the relevant information of the sub-route and the devices attached to the sub-route is deleted from the networking topology information database.

Example 8:

As shown in FIG. 12 , it is a schematic structural diagram of a home networking network topology management apparatus according to an embodiment of the present invention. The home networking network topology management apparatus in this embodiment includes one or more processors 21 and a memory 22 . Among them, one processor 21 is taken as an example in FIG. 12 .

The processor 21 and the memory 22 may be connected by a bus or in other ways, and the connection by a bus is taken as an example in FIG. 12 .

As a non-volatile computer-readable storage medium, the memory 22 can be used to store non-volatile software programs and non-volatile computer-executable programs, such as the home networking network topology management method in Embodiment 1. The processor 21 executes the home networking network topology management method by running the non-volatile software programs and instructions stored in the memory 22 .

Memory 22 may include high speed random access memory, and may also include nonvolatile memory, such as at least one magnetic disk storage device, flash memory device, or other nonvolatile solid state storage device. In some embodiments, the memory 22 may optionally include memory located remotely from the processor 21, and these remote memories may be connected to the processor 21 through a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The program instructions/modules are stored in the memory 22, and when executed by the one or more processors 21, execute the home networking network topology management method in the above Embodiment 1, for example, execute the above-described diagram. 5. Each step shown in Figure 6, Figure 8-Figure 11.

It is worth noting that the information exchange, execution process and other contents between the modules and units in the above-mentioned device and the system are based on the same concept as the processing method embodiments of the present invention. For details, please refer to the descriptions in the method embodiments of the present invention. , and will not be repeated here.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the embodiments can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium can include: Read memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or CD, etc.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (15)

1. A system for home networking network topology management, characterized in that the system includes a main routing device, one or more sub-routing devices, and one or more terminal devices, and the sub-routing devices are connected to The main routing device or access to other sub-routing devices located in its upstream, and the terminal device is connected to the main routing device or sub-routing device through wired or wireless means, specifically:

   The main routing device works in routing mode, and the main routing device provides wired and/or wireless link channels for each terminal device and sub-routing device inside the home network to access the home network; wherein, the main routing device assigns IP to the sub-routing device and the terminal device. address;

   The bridge mode in which the sub-routing device works, establishes a link channel with the main routing device through wired and/or wireless means for the downlink sub-routing device and/or the connected terminal device that has completed the access; the sub-routing device and the main routing device A dedicated management channel is also established therebetween for the sub-routing device to report the information of the connected terminal device and/or the information of the downlink sub-routing device that forms an access relationship with it.
2. The system for home networking network topology management according to claim 1, wherein each entry in the networking topology information database is information of a device in the home networking device, and the device information includes a device MAC address, a device One or more of the type, device name, device IP address, device access method, access interface name, device access status, uplink device MAC address and downlink device MAC address; the devices include sub-routing devices and terminals equipment;

   Among them, the device type, device access method, access interface name, device access status, and uplink device MAC address/downlink device MAC address are sent to the main routing device by the sub-routing device by transmitting private protocol messages through the dedicated management channel , and other information is obtained by the main routing device from the DHCP exchange message.
3. The system for home networking network topology management according to claim 2, wherein after the sub-routing device obtains the device IP address allocated by the main routing device, the method further comprises:

   The sub-routing device sends private protocol messages to the main routing device through the dedicated management channel;

   After receiving the private protocol message of the sub-routing device, the main routing device uses the device MAC address of the sub-routing device as a search key to search in the networking topology information database; Describe the information of the sub-routing device; if found, update the device type corresponding to the record of the sub-routing device in the networking topology information database to the sub-routing type;

   After the sub-routing device is successfully registered, check whether the local device database of the sub-routing device has access to the device, and if so, send the device MAC address and device access mode of the sub-routing device to the main router through the dedicated management channel. The device, the main routing device updates the networking topology information database; wherein, the attached devices include sub-routing devices and/or terminal devices.
4. The system for home networking network topology management according to claim 1, wherein when the terminal device or the sub-routing device obtains the IP address from the main routing device, the system further comprises:

   The main routing device obtains one or more of the device IP address, device MAC address and device name of the sub-routing device or terminal according to the DHCP exchange message with the sub-routing device or terminal device;

   The main routing device uses the device MAC address of the sub-routing device or terminal device as a search key to search for the corresponding sub-routing device or terminal device in the networking topology information database; if it is found, it will match each information and complete the corresponding information If it is not found, a record will be added to the network topology information database to record the corresponding information.
5. The system for home networking network topology management according to claim 1, wherein after obtaining the IP address, each sub-routing device sends a link layer discovery protocol packet to the neighbor device through the WAN side interface, and when the sub-routing device obtains the IP address, it sends a link layer discovery protocol packet to the neighbor device. After the uplink device of the device receives the link layer discovery protocol message, the information obtained from the link layer discovery protocol message includes: device MAC address and device type; when the uplink device is a sub-routing device, the uplink device The device MAC address in the road layer discovery protocol message message finds out the access interface name of the corresponding sub-routing device in the address learning table that stores the MAC address, and uses the device MAC address, device type and the found access interface name. Write into the local device database; when the upstream device is the main routing device, the upstream device searches out the corresponding sub-link in the address learning table storing the MAC address according to the device MAC address in the link layer discovery protocol message. routing device access interface name, and write the device MAC address, device type and the found access interface name into the networking topology information database;

   The local attached device database maintained by each sub-routing device is used when the sub-routing device reports the information of the attached terminal device and/or the information of the downstream sub-routing device that forms an access relationship with it through private protocol messages.
6. The system for home networking network topology management according to claim 5, characterized in that, when the terminal device is accessed through a wired mode and the corresponding terminal device does not support link layer discovery protocol packets, each main route The device or the sub-routing device also obtains the information of the connected terminal device connected to the main routing device or the sub-routing device according to the MAC address access message, which specifically includes:

   If the sub-routing device receives the MAC address access message, it searches the local attached device database to see whether the interface carried in the corresponding MAC address access message has been connected to the sub-routing device; if the main routing device receives the MAC address access After the message, find out whether the interface carried in the corresponding MAC address access message has accessed the sub-routing device from the networking topology information database;

   If it has been accessed, the MAC address access message is not processed, and the device corresponding to the device MAC address is not a directly connected device;

   If it has not been accessed, it indicates that the device information carried in the MAC address access message corresponds to a directly connected terminal device, and the device information carried in the MAC address access message is stored in the local connected device. In the device database or the networking topology information database.
7. The system for home networking network topology management according to claim 1, wherein after receiving the WiFi online and offline message, each sub-routing device carries the device MAC address and the accessed WiFi interface according to the WiFi online and offline message. name, directly save the corresponding device information to the local device database;

   After receiving the WiFi online and offline message, the main routing device directly saves the corresponding device information in the networking topology information database according to the device's MAC address and the name of the connected WiFi interface in the WiFi online and offline message.
8. The system for home networking network topology management according to claim 1, wherein when the terminal device accesses the sub-routing device in a wired or wireless manner, the system further comprises:

   The sub-routing device obtains the device MAC address and device access mode of the terminal device, and the sub-routing device sends the directly connected terminal device MAC address, device access mode and the sub-routing device's own device MAC address through the dedicated management channel. Send to the main routing device;

   After receiving the information sent by the sub-routing device, the main routing device uses the device MAC address of the terminal device carried in the information content as a search key to search in the networking topology information database to determine whether there is corresponding device information; If found, add a record in the networking topology information database and add the device MAC address of the corresponding terminal device, the device access mode, and the device MAC address of the sub-routing device itself into the networking topology information database; Then the confirmation of the device access mode and the device MAC address of the sub-routing device itself is completed.
9. The system for home networking network topology management according to claim 1, wherein when a device on the sub-routing device or the main routing device goes offline, an event notification that the device goes offline is received, wherein the devices include terminal devices and / or sub-routing device, the system also includes:

   If the sub-routing device receives the event notification that the device goes offline, it determines whether the sub-routing device that receives the event notification that the device goes offline has obtained the IP address assigned by the main route; if it has obtained the IP address, it will go offline The device MAC address of the device is sent to the main routing device; the corresponding offline device information is deleted in the local device database of the sub-routing device;

   If the main routing device receives the event notification that the device goes offline, the device MAC address of the device is used as a search key to search in the networking topology information database and delete the device information, if the device type of the offline device is For sub-routing devices, the main routing device traverses the networking topology information database, and deletes the information of the sub-routing devices whose MAC address is the device; wherein, the sub-routing device information includes sub-routing devices and/or terminal devices.
10. A method for home networking network topology management, characterized in that it is applied to the system for home networking network topology management described in any one of claims 1-9, the method comprising:

    For each sub-routing device and terminal device in the home networking network, the main routing device obtains the downstream sub-routing device information and/or the attached terminal device information of each sub-routing device through the dedicated management channel established with the sub-routing device , and also obtain one or more of the device IP address, device MAC address, and device name of the sub-routing device or terminal device from the DHCP exchange message;

    According to the MAC address of the device, the content obtained from the dedicated management channel and the content obtained in the DHCP exchange message are combined to generate a complete home network topology.
11. The method for home networking network topology management according to claim 10, wherein when a terminal device accesses the sub-routing device or the main routing device, the sub-routing device or the main routing device receives the online access of the terminal device. message, the method specifically includes:

    If the sub-routing device is accessed by a terminal device, the sub-routing device obtains the terminal device's MAC address, access mode, and the sub-routing device's own MAC address, and the sub-routing device determines whether an IP address is allocated, and if not If an IP address is assigned by the main routing device, the local device database will be updated; if an IP address has been assigned, the acquired terminal device information and its own MAC address will be sent to the main routing device through a dedicated management channel;

    After receiving the information sent by the sub-routing device, the main routing device uses the MAC address of the terminal device as a key to search in the networking topology information database; if the terminal device is found, it updates the access mode and uplink access device. MAC; if the terminal device is not found, a new record is added in the topology database, and the terminal device MAC, access mode and uplink access device MAC are written.
12. The method for home networking network topology management according to claim 10, wherein the method process for obtaining an IP address by a terminal device or a sub-routing device comprises:

    The terminal device or sub-routing device sends a request message for obtaining an IP address to the main routing device;

    The main routing device parses the MAC address of the device, the IP address of the terminal device, and the related information of the device name from the DHCP exchange message, and searches the network topology information database according to the MAC address; The name and device type parameters include those belonging to the sub-routing device and/or belonging to the connected terminal device;

    If found, add the IP address, device name and device type of the terminal device to the networking topology information database; if not found, add a new record and write it into the MAC address, device name and device type of the device one or more of the.
13. The method for home networking network topology management according to claim 10, wherein when a device on the sub-routing device or the main routing device goes offline, an event notification that the device goes offline is received, wherein the devices include terminal devices and / or a sub-routing device, the method further includes:

    After the sub-routing device or the main routing device receives the event notification that the device goes offline, it updates the local device database with the MAC address of the offline device;

    If the sub-routing device receives the event notification that the device goes offline, it determines whether the sub-routing device that receives the event notification that the device goes offline has obtained the IP address assigned by the main route; if it has obtained the IP address, it will go offline The MAC address of the device is sent to the main routing device;

    If the main routing device receives the event notification that the device goes offline, the device's MAC address is used as a keyword to search in the networking topology information database and delete the device information, if the device type of the offline device is a sub-router The device, the main routing device traverses the topology database, and deletes the information of the downstream devices whose MAC addresses of the upstream device are the device; wherein, the information of the downstream devices includes sub-routing devices and/or terminal devices.
14. The method for home networking network topology management according to claim 10, wherein the method comprises a sub-routing device registration process, specifically:

    After the sub-routing device obtains the IP address, it sends the registration message of the private protocol to the main routing device through the dedicated management channel;

    After receiving the registration message of the sub-routing device, the main routing device uses the MAC address of the sub-routing device as a key to search in the networking topology information database; if not found, then adds the sub-routing to the networking topology information database Device information; if found, update the device type corresponding to the sub-routing device recorded on the main routing device side to the sub-routing type;

    After the sub-routing device is successfully registered, check whether the local device database of the sub-routing device has access to the device. If so, send the MAC address and access method of the sub-routing device to the main routing device through the dedicated management channel. The routing device updates the networking topology information database; wherein, the attached devices include sub-routing devices and/or terminal devices.
15. The method for home networking network topology management according to claim 14, wherein the method comprises a heartbeat maintenance and management process of a sub-routing device, specifically:

    After the sub-routing device is successfully registered with the main routing device, it periodically sends a heartbeat message to the main routing device;

    If the main routing device does not receive the heartbeat message of the first sub-routing device within the preset time, it will store the relevant information of the first sub-routing device and each device connected to the first sub-routing device in the networking topology information database. delete.

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