WO2017076279A1

WO2017076279A1 - Method of updating forward information base item, and device and system utilizing same

Info

Publication number: WO2017076279A1
Application number: PCT/CN2016/104249
Authority: WO
Inventors: 方海鹏
Original assignee: 华为技术有限公司
Priority date: 2015-11-02
Filing date: 2016-11-01
Publication date: 2017-05-11
Also published as: CN106656803B; CN106656803A

Abstract

The invention relates to the technical field of networks, and specifically, to a method of updating a forward information base item, and a device and system utilizing the same. The method comprises: a first terminal receives a first content request transmitted from a second terminal, and transmits data corresponding to the first content request to the second terminal, wherein the first content request contains an equipment identifier of second router equipment to which the second terminal is connected to access to a second network thereof; when signal quality corresponding to a first network currently accessed by the first terminal does not meet a preconfigured signal quality condition, the first terminal accesses to a third network having an access signal quality satisfying the signal quality condition; and the first terminal transmits via the third network, and based on the equipment identifier of the second router equipment, a first path update modification to the second router equipment, so as to enable the second router equipment to establish a forward information base item corresponding to the first terminal in the third network, and configure the forward information base item as a preferable router item of the first terminal. Adopting the invention facilitates implementation of a complicated network.

Description

Method, device and system for updating routing entries

This application claims priority to Chinese Patent Application No. 201510734003.2, entitled "A Method, Apparatus and System for Updating Routing Table Items", filed on November 2, 2015, the entire contents of which are incorporated by reference. Combined in this application.

Technical field

The present invention relates to the field of network technologies, and in particular, to a method, device, and system for updating a routing entry.

Background technique

ICN (Information Centrie Networking) is a future Internet architecture. Compared with the traditional Internet Protocol, ICN routing is based on information content routing. In the ICN, the content of the content provider (which may be a terminal) is broadcasted in the network, and the content identifier GN1 (or content name) of the content may be carried in the broadcast message to enable the router in the network. Establishing a routing entry corresponding to GN1. If the user wants to request the content, the terminal sends a content request to the ICN, where the content request carries the GN1, and the router in the ICN receives the content request, and then carries the content according to the content request. The name of the FIB (Forwarding Information Base) finds the next hop, and finally reaches the content provider. After receiving the content request, the content provider feeds back the data corresponding to the content request to the content requester.

In the prior art, the user sends a content request to the terminal (MN1) of the content provider through the terminal (MN2) in the network A. At this time, the MN1 accesses the network B through the port 1, and subsequently, the MN1 may move, and the MN1 detects The signal quality to the network B is degraded, the signal quality of the network C is relatively good, and the MN1 accesses the network C through the other port 2. In the case that the network B cannot receive the content request, the subsequent content request of the MN2 cannot be sent to the MN1. The treatments that can be used are as follows:

After accessing the network C, the MN1 sends a path update notification (or a route update) to the network C by using the port 2, and the path update notification carries the GN1. If the route router does not have the GN1 routing entry, it is added to the network C. The routing entry of GN1, and then forward the path update notification to the upper router, the path notification will be forwarded to the core router connecting network A, network B, and network C. After receiving the Interest, the core router will be in its own A GN1 routing entry to the network C is added to the routing table, and the routing entry is recorded as a priority routing entry. In this way, the content request that arrives at MN1 subsequently can be routed to MN1 through network C.

In the process of implementing the present invention, the inventors have found that the prior art has at least the following problems:

The prior art requires strict network deployment. A core router that connects to network A, network B, and network C is required. If the terminal needs to switch between more networks, the core router needs to connect more networks. Conducive to the realization of complex networks.

Summary of the invention

In order to solve the problem of the prior art, the embodiment of the present invention provides a method and an apparatus for updating a routing entry. The technical solution is as follows:

In order to solve the problem of the prior art, the embodiment of the present invention provides a method and a system for updating a routing entry. The technical solution is as follows:

In a first aspect, a method for updating a routing entry is provided, the method comprising:

Receiving, by the first terminal, the first content request sent by the second terminal, and transmitting the data corresponding to the first content request to the second terminal, where the first content request carries the second terminal to access the second content terminal a device identifier of the second routing device to which the second network belongs;

When the first terminal detects that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the access signal quality meets the signal quality condition of the third network;

Transmitting, by the first terminal, the first path update notification to the second routing device by using the third network, based on the device identifier of the second routing device, to enable the second routing device to establish the first A routing entry corresponding to the terminal in the third network, and recorded as a priority routing entry of the first terminal.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the first terminal, when detecting that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the access signal After the third network whose quality satisfies the signal quality condition, the method further includes:

The first terminal acquires a device identifier of the first routing device connected to the first network;

Transmitting, by the first terminal, the second path update notification to the first routing device by using the third network, based on the device identifier of the first routing device, to enable the first routing device to establish the first A routing entry corresponding to the terminal in the third network, and recorded as a priority routing entry of the first terminal.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the first terminal, by using the third network, is based on a device identifier of the first routing device After the sending the second path update notification to the first routing device, the method further includes:

The first terminal receives a second content request that is sent by the second terminal by using the fourth network, where the second content request carries the second terminal to access the fourth routing device that is connected to the fourth network. Device identification

Transmitting, by the first terminal, data corresponding to the second content request to the second terminal;

If the first terminal determines that the second terminal has a network switch according to the device identifier of the fourth routing device and the device identifier of the second routing device, the first terminal passes the third network, based on the a device identifier of the fourth routing device, configured to send a third path update notification to the fourth routing device, so that the fourth routing device establishes a routing entry corresponding to the first terminal in the third network, And recorded as the priority routing entry of the first terminal.

With reference to the first aspect, in a third possible implementation manner of the first aspect, the first terminal, when detecting the current After the signal quality of the first network that is accessed does not meet the preset signal quality condition, after the access signal quality meets the third network of the signal quality condition, the method further includes:

The first terminal performs content broadcast through the third network.

In a second aspect, a method for updating a routing entry is provided, the method comprising:

The second routing device receives the first content request sent by the second terminal to the first terminal, and forwards the first content request to the first terminal, where the first content request carries the first content The device identifier of the second routing device;

Receiving, by the second routing device, data corresponding to the first content request, and forwarding the data to the second terminal;

The second routing device receives the first path update notification sent by the first terminal based on the device identifier of the second routing device, where the first path update notification is detected by the first terminal The signal quality of the incoming first network does not meet the preset signal quality condition and is transmitted through the third network after accessing the third network whose signal quality meets the signal quality condition;

The second routing device establishes a routing entry corresponding to the first terminal in the third network, and records the priority routing entry of the first terminal.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the method further includes: when the second terminal stores the corresponding routing table of the first terminal in the third network The second routing device deletes the routing entry corresponding to the first terminal in the third network, when the duration of the unused time exceeds the preset duration threshold.

The third aspect provides a first terminal, where the first terminal includes:

a transmitting module, configured to receive a first content request sent by the second terminal, and transmit data corresponding to the first content request to the second terminal, where the first content request carries the second terminal Entering the device identifier of the second routing device connected to the second network to which it belongs;

An access module, configured to: when it is detected that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the access signal quality meets the signal quality condition of the third network;

An update module, configured to send, by using the third network, a first path update notification to the second routing device, based on the device identifier of the second routing device, to enable the second routing device to establish the first A routing entry corresponding to the terminal in the third network, and recorded as a priority routing entry of the first terminal.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the first terminal further includes: an acquiring module, configured to acquire a device identifier of the first routing device connected to the first network ;

The update module is further configured to send, by using the third network, a second path update notification to the first routing device, based on the device identifier of the first routing device, to enable the first routing device to establish a location The routing entry corresponding to the first terminal in the third network is recorded as a priority routing entry of the first terminal.

In conjunction with the first possible implementation of the third aspect, in a second possible implementation manner of the third aspect, The transmission module is further configured to:

Receiving, by the second terminal, the second content request sent by the second terminal, where the second content request carries the device identifier of the fourth routing device connected to the fourth network by the second terminal; Transmitting, by the second terminal, data corresponding to the second content request;

The update module is further configured to:

If it is determined that the second terminal has a network switch according to the device identifier of the fourth routing device and the device identifier of the second routing device, the device identifier based on the fourth routing device is used by the third network. The fourth routing device sends a third path update notification, so that the fourth routing device establishes a routing entry corresponding to the first terminal in the third network, and records the priority of the first terminal. Routing entry.

With reference to the third aspect, in a third possible implementation manner of the third aspect, the first terminal further includes:

And a broadcast module, configured to perform content broadcast by using the third network.

In a fourth aspect, a second routing device is provided, where the second routing device includes:

a transmitting module, configured to receive a first content request sent by the second terminal to the first terminal, forward the first content request to the first terminal, receive data corresponding to the first content request, and forward the data Giving the second terminal; wherein the first content request carries the device identifier of the second routing device;

An update module, configured to receive a first path update notification sent by the first terminal based on a device identifier of the second routing device, where the first path update notification is detected by the first terminal The signal quality of the first network does not satisfy the preset signal quality condition and is transmitted through the third network after accessing the third network whose signal quality meets the signal quality condition;

The establishing module is configured to establish a routing entry corresponding to the first terminal in the third network, and record the priority routing entry of the first terminal.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the second routing device further includes:

a deleting module, configured to delete the first terminal in the third network when the stored duration of the first terminal in the third network that is not used by the first terminal exceeds a preset duration threshold Corresponding routing entry.

In a fifth aspect, a system for updating a routing entry is provided. In a first possible implementation manner of the fifth aspect, the system includes: a first terminal and a second routing device, where:

The first terminal is configured to receive a first content request sent by the second terminal, and transmit data corresponding to the first content request to the second terminal, where the first content request carries the first The second terminal accesses the device identifier of the second routing device connected to the second network to which the terminal belongs; when it is detected that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the access signal quality satisfies a third network of the signal quality condition; sending, by the third network, a first path update notification to the second routing device based on the device identifier of the second routing device;

The second routing device is configured to receive a first content request sent by the second terminal to the first terminal, forward the first content request to the first terminal, and receive the first content request corresponding to the first content request Data, and forwarded to the second terminal; receiving a first path update notification sent by the first terminal based on the device identifier of the second routing device; establishing corresponding to the first terminal in the third network The routing entry is recorded as the priority routing entry of the first terminal.

The beneficial effects brought by the technical solutions provided by the embodiments of the present invention are:

In the embodiment of the present invention, the first terminal receives the first content request sent by the second terminal, and transmits the data corresponding to the first content request to the second terminal, where the first content request carries the second terminal to access the The device identifier of the second routing device connected to the second network; when the first terminal detects that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the access signal quality satisfies the signal quality condition a third network, the first terminal sends a first path update notification to the second routing device, based on the device identifier of the second routing device, by the third terminal, so that the second routing device establishes a corresponding route of the first terminal in the third network. The entry is recorded as the priority routing entry of the first terminal. In this way, in the process of performing path change after the content provider performs network switching, it is not necessary to connect the core routers of multiple networks, which is beneficial to the implementation of the complex network.

DRAWINGS

In order to more clearly illustrate the technical solutions in 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 only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

FIG. 1 is a flowchart of a method for updating a routing entry according to an embodiment of the present invention;

2 is a flowchart of a method for updating a routing entry according to an embodiment of the present invention;

3 is a schematic diagram of a system architecture provided by an embodiment of the present invention;

4 is a flowchart of a method for updating a routing entry according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a process for updating a routing entry according to an embodiment of the present invention; FIG.

FIG. 6 is a flowchart of a method for updating a routing entry according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a process for updating a routing entry according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of a first terminal according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a first terminal according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a first terminal according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a second routing device according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a second routing device according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a routing device according to an embodiment of the present invention.

detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Embodiment 1

The embodiment of the present invention provides a method for updating a routing entry, which may be implemented by a terminal and a routing device, where the terminal may include a terminal of the content provider (which may be referred to as a first terminal) and a terminal of the content requester. The routing device to which the first terminal accesses the first network may be the first routing device, and the routing device to which the second terminal accesses the second network may be the second routing device.

As shown in FIG. 1 , the processing procedure of the first terminal in the method may include the following steps:

Step 101: The first terminal receives the first content request sent by the second terminal, and transmits the content corresponding to the first content request to the second terminal, where the first content request carries the second network to which the second terminal accesses The device identifier of the connected second routing device.

Step 102: When detecting that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the first terminal accesses the third network whose signal quality meets the signal quality condition.

Step 103: The first terminal sends a first path update notification to the second routing device by using the third network, based on the device identifier of the second routing device, so that the second routing device establishes a corresponding route of the first terminal in the third network. The entry is recorded as the priority routing entry of the first terminal.

As shown in FIG. 2, the processing flow of the second routing device in the method may include the following steps:

Step 201: The second routing device receives the first content request sent by the second terminal to the first terminal, and forwards the first content request to the first terminal, where the first content request carries the device identifier of the second routing device.

Step 202: The second routing device receives the data corresponding to the first content request, and forwards the data to the second terminal.

Step 203: The second routing device receives a first path update notification sent by the first terminal according to the device identifier of the second routing device, where the first path update notification is sent by the first terminal to detect the signal of the first network accessed by the first terminal. The quality does not satisfy the preset signal quality condition and is connected to the third network whose signal quality satisfies the signal quality condition, and then transmitted through the third network.

Step 204: The second routing device establishes a routing entry corresponding to the first terminal in the third network, and records the priority routing entry of the first terminal.

In the embodiment of the present invention, the first terminal receives the first content request sent by the second terminal, and transmits the data corresponding to the first content request to the second terminal, where the first content request carries the second terminal to access the The device identifier of the second routing device connected to the second network. When the first terminal detects that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the access signal quality satisfies the signal quality condition. Three networks, the first terminal passes the third The network, based on the device identifier of the second routing device, sends a first path update notification to the second routing device, so that the second routing device establishes a routing entry corresponding to the first terminal in the third network, and records the same as the first terminal. Priority routing entry. In this way, in the process of performing path change after the content provider performs network switching, it is not necessary to connect the core routers of multiple networks, which is beneficial to the implementation of the complex network.

Embodiment 2

The embodiment of the invention provides a method for updating a routing entry, which can be implemented by a terminal and a routing device. The terminal may include a terminal of the content provider (which may be referred to as a first terminal) and a terminal of the content requester (which may be referred to as a second terminal), and the routing device connected to the first terminal to access the first network may be the first The routing device, the second terminal accessing the routing device connected to the second network, may be a second routing device, and the first network and the second network may be a WIFI (Wireless Fidelity) network, 2G (Second Generation Mobile Communication Technology) , second generation mobile communication technology), 3G (Third Generation Mobile Communication Technology), 4G (Fourth Generation Mobile Communication Technology) network, etc., the corresponding system architecture can be as Figure 3 shows.

The first terminal and the second terminal may be mobile terminals such as mobile phones and tablet computers, and may be provided with a memory, a processor, a transmission component, a network port, etc., the network port may be used to access the network, and the memory may be used to store one or more The data and content request of the shared content, the processor can be used to process content requests and network switching, the transmission component can be used to receive and transmit data, and the display screen, input components, and the like can also be provided.

The first routing device and the second routing device may be devices such as an ICN router, and may include components such as a processor, a memory, a transmission component, and a network port. The processor may be used to process a content request and a network switch, and the storage may be used for storage. Data generated during content request and network switching, etc., network ports can be used to access the network.

As shown in FIG. 4, the processing flow of the method may include the following steps:

Step 401: The second routing device receives the first content request sent by the second terminal to the first terminal, and forwards the first content request to the first terminal.

The first content request includes: a content identifier of the requested content, and a device identifier of the second routing device. The message format of the first content request may be: /GN1/1-50; CRNAME: R2, where GN1 is the content identifier of the requested content, and 1-50 is the sequence number of the requested data. For example, all data of GN1 is 1-200, requesting 1-50), CRNAME: R2 represents the device identifier of the second routing device connected by the second terminal that sends the first content request.

In an implementation, the first terminal is connected to the first routing device in the first network through its own network port 1, and then broadcasts the content identifier (such as GN1) of the locally provided content (such as video, picture, etc.) in the network. After receiving the broadcast message, the routing device in the network may establish a routing entry of the first terminal in the first network, where the routing entry corresponds to the content, and the routing entry may include the port of the GN1 and the egress port. Logo. If the first terminal provides multiple content, multiple broadcast messages may be sent. Correspondingly, each routing device may also establish a routing table corresponding to each content. item.

As shown in FIG. 3, when the user wants to obtain the foregoing content in the first terminal, the second terminal may be enabled to enable the second terminal to connect to the second routing device through the network port, thereby completing access to the second network. The second terminal may obtain the device identifier of the second routing device and store it in the second terminal. The user may input the content identifier of the content in the second terminal, and after receiving the content identifier input by the user, the second terminal may generate a first content request based on the content identifier and the device identifier of the second routing device, and then A content request is sent to the second routing device. After receiving the first content request for the first terminal sent by the second terminal, the second routing device may obtain the content identifier in the first content request, and forward the first content request to the first A network and eventually forwarded to the first terminal.

Step 402: The first terminal receives the first content request sent by the second terminal, and transmits data corresponding to the first content request to the second terminal.

In an implementation, after receiving the first content request sent by the second terminal, the first terminal may store the device identifier of the second routing device, and at the same time, according to the content identifier in the first content request, in the locally provided content, Searching for content corresponding to the content identifier, and feeding back data corresponding to the content to the second terminal.

Step 403: The second routing device receives the data corresponding to the first content request, and forwards the data to the second terminal.

In an implementation, the data corresponding to the first content request is forwarded to the second routing device during the forwarding process, and then the second routing device forwards the data to the second terminal.

Step 404: When the first terminal detects that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the first terminal accesses the third network that meets the preset signal quality condition.

In the implementation, the data transmission between the first terminal and the second terminal is in progress, the first terminal may slowly move and gradually move to the edge of the first network, when the first terminal detects the signal of the first network currently accessed. The quality does not meet the preset signal quality condition. If the signal strength cannot reach a certain intensity threshold, and the signal quality of the third network satisfies the signal quality condition, the first terminal connects to the third routing device of the third network through the network port 2.

Optionally, after the first terminal accesses the third network, the first terminal may initiate a routing path to the first routing device in the third network, and correspondingly, the first terminal may perform the following processing: the first terminal acquires the connection to the first network. The device identifier of the first routing device, the first terminal sends a second path update notification to the first routing device, based on the device identifier of the first routing device, by the third terminal, so that the first routing device establishes the first terminal in the first The corresponding routing entry in the three networks is recorded as the priority routing entry of the first terminal.

The second path update notification includes: a content identifier of the content provided by the first terminal, and a device identifier of the first routing device, where the content provided by the first terminal may be the content corresponding to the first content request, or may further include Other content provided by the first terminal. The message format of the second path update notification may be R1/Notify/ADD_GN1_FIB, where GN1 is the content identifier of the content that the first terminal can provide, Notify indicates that the message type is the path update notification, and ADD_GN1_FIB indicates that the routing entry for GN1 is added. R1 is the device identifier of the first routing device.

In an implementation, when the first terminal connects to the first routing device in the first network, the first terminal may record the device identifier R1 of the first routing device, and when the first terminal connects to the third routing device of the third network through the network port 2 The first terminal may obtain the device identifier of the first routing device that it records. After the first terminal accesses the third network, the content of the first terminal is slower to spread on the third network, and the required time is longer. To prevent other terminals from sending content requests to the first terminal, the content request is routed to The first network, and the signal quality of the first terminal in the first network is poor, so that the first terminal cannot receive the content request, and the processing manner of the first terminal may be as follows:

As shown in FIG. 5, after the first terminal accesses the third network through the port 2, the second path update notification is automatically generated according to the device identifier of the first routing device, and then the second path update notification is sent to the third routing device. After receiving the second path update notification sent by the first terminal, the third routing device may obtain the device identifier of the first routing device in the second path update notification, and notify the second path update by using the maximum matching manner based on the device identifier. Forwarding to the first routing device, in this process, a routing path between the first routing device and the third routing device may be established, and a routing entry of the content of the first terminal in the third network is established in the routing device, and The routing entry is recorded as the priority routing entry of the first terminal. In this way, after the routing device of the first network receives the content request sent by the first terminal, if the routing device has the priority routing entry of the first terminal, the content request is performed according to the priority routing entry of the first terminal. Forwarded to the first terminal in the third network.

Step 405: The first terminal sends a first path update notification to the second routing device by using the third network, based on the device identifier of the second routing device.

The first path update notification includes: a content identifier of the content provided by the first terminal, and a device identifier of the second routing device, where the content provided by the first terminal may be the content corresponding to the first content request, or may further include For other content provided by the first terminal, the message format of the first path update notification may be R2/Notify/ADD_GN1_FIB, Notify indicates that the message type is a path update notification, ADD_GN1_FIB indicates that the routing entry for GN1 is added, and GN1 is the requested content. Content identifier, R2 is the device identifier of the second routing device.

In an implementation, when the second terminal sends the content request to the first terminal again, the content request may not be sent because the first terminal does not establish a routing path between the third network and the second terminal in the second network. The first terminal. To ensure that the content request can be successfully sent to the first terminal, the processing manner of the first terminal may be:

As shown in FIG. 5, the first terminal automatically generates a first path update notification according to the device identifier of the second routing device, and then sends the first path update notification to the third routing device, where the third routing device receives the first terminal. After the path update notification, the device identifier of the second routing device in the first path update notification may be obtained, and the first path update notification is forwarded to the second routing device by using the maximum matching manner based on the device identifier.

Step 406: The second routing device receives the first path update notification sent by the first terminal according to the device identifier of the second routing device.

Step 407: The second routing device establishes a routing entry corresponding to the first terminal in the third network, and records the priority routing entry of the first terminal.

In an implementation, after receiving the first path update notification sent by the first terminal, the second routing device may add a routing entry corresponding to the first terminal in the third network in the routing table, where the routing entry may include The egress port (which may be the port that receives the first path update notification) and the content identifier carried in the path update notification. If multiple content identifiers are carried, multiple corresponding routing entries may be established, and then the established routing entry may be established. Recorded as the priority routing entry of the first terminal, in this process, a routing path between the first terminal and the second routing device may be established, and a routing table of the content of the first terminal in the third network is established in the routing device passing through And the routing entry is recorded as the priority routing entry of the first terminal. In this way, the optimal path of the first terminal in the third network and the second terminal in the second network is established. When the second terminal sends the content request to the first terminal again, the second routing device receives the second terminal and sends the second terminal. The content request routes the content request to the first terminal according to the priority routing entry of the first terminal.

In the embodiment of the present invention, based on the processing of the first terminal sending the second path update notification to the first routing device by using the third network, the processing procedure after the network switching of the second terminal is further provided, as shown in FIG. It can include the following steps:

Step 601: The first terminal receives the second content request sent by the second terminal by using the fourth network, where the second content request carries the device identifier of the fourth routing device connected to the fourth network.

The second content request includes: a content identifier of the content requested by the second content request, and a device identifier of the fourth routing device. The message content of the second content request may be: /GN1/30~50; CRNAME: R4, where R4 is the device identifier of the fourth routing device, and 30-50 is the serial number of the requested data, because the second terminal generates a network. Switching, it is possible that the previously requested data has not been obtained yet, then the second content request may request to acquire the remaining data, for example, the previous terminal has previously acquired 1-30, and may obtain 30-50 through the second content request; The message content of the second content request may also be: /GN1/50~100; CRNAME: R4, 50-100 is the location of the requested data in all the data of GN1, and the data requested by the content request before the second terminal may be After the reception has been completed, the second content request can request new data, that is, 50 to 100.

In an implementation, after the first terminal switches from the first network to the third network, if the user of the second terminal moves with the second terminal and enters the coverage of the fourth network, the second terminal detects the second terminal. If the signal quality of the second network does not meet the preset signal quality condition, and the signal quality of the fourth network satisfies the signal quality condition, the second terminal may connect to the fourth routing device in the fourth network through the corresponding network port to access In the fourth network, the second terminal may obtain the device identifier of the fourth routing device, and then send the second content request to the fourth routing device. After receiving the second content request for the first terminal sent by the second terminal, the fourth routing device may obtain the content identifier in the second content request, and based on the content identifier, the fourth routing device will The content request is forwarded to the first network, and after receiving the content request sent by the second terminal to the first terminal, the routing device of the first network forwards the content request to the third network according to the priority routing entry of the first terminal. The first terminal may establish a routing path from the second terminal in the fourth network to the first routing device in the first network to the first terminal in the third network.

Step 602: The first terminal transmits data corresponding to the second content request to the second terminal.

In an implementation, after receiving the second content request sent by the second terminal, the first terminal stores the device identifier of the fourth routing device, and searches for the content in the locally provided content according to the content identifier in the second content request. The content identifies the content, and the data corresponding to the content is sent to the second terminal by using a routing path for transmitting the second content request.

Step 603: If the first terminal determines that the second terminal has a network switch according to the device identifier of the fourth routing device and the device identifier of the second routing device, the first terminal passes the third network, and is based on the device identifier of the fourth routing device. Sending a third path update notification to the fourth routing device.

The third path update notification includes: a content identifier of the content provided by the first terminal, and a device identifier of the fourth routing device, where the content provided by the first terminal may be the content corresponding to the second content request, or may further include For the other content provided by the first terminal, the message format of the third path update notification may be R4/Notify/ADD_GN1_FIB, where GN1 is the content identifier of the content that the first terminal can provide, and Notify indicates that the message type is the path update notification, and R4 is The device identifier of the fourth routing device.

In an implementation, after receiving the second content request, the first terminal may further acquire the device identifier of the fourth routing device carried therein, and further access the device identifier of the fourth routing device to the second terminal that is pre-recorded. The device identifiers of the second routing device connected to the network are compared. If they are different, it is determined that the second terminal has a network switch, and the first terminal can perform the following processing:

As shown in FIG. 7, the first terminal automatically generates a third path update notification according to the device identifier of the fourth routing device, and then sends a third path update notification to the third routing device, where the third routing device receives the first terminal. After the three-path update notification, the device identifier of the fourth routing device in the third path update notification may be obtained, and the third path update notification is forwarded to the fourth routing device by using the fuzzy search manner, and the fourth route is obtained. After receiving the third path update notification, the device may establish a routing entry of the content of the first terminal in the third network, and record the routing entry as the priority routing entry of the first terminal. In this process, a routing path between the third routing device and the fourth routing device may be established, and a routing entry of the content of the first terminal in the third network is established in the routing device, and the routing entry is recorded as The priority routing entry of the first terminal.

In the embodiment of the present invention, after the first terminal accesses the third network whose signal quality meets the signal quality condition, the first terminal performs content broadcast through the third network.

In an implementation, after the first terminal accesses the third network, the broadcast of the content of the first terminal in the third network is generally slow. The manner in which the first terminal broadcasts the locally provided content in the network may be: the first terminal broadcasts the locally provided content in the network, and after receiving the broadcast message, the routing device in the network may establish the first terminal in the first A routing entry in the network, the routing entry corresponding to the content, the routing entry may include a content identifier of the content, and a port identifier of the egress port. If the first terminal provides multiple content, multiple broadcast messages may be sent. Correspondingly, each routing device may also establish a routing entry corresponding to each content.

In the embodiment of the present invention, the deletion mechanism of the newly added routing entry may be set, and the corresponding processing may be as follows: when the first terminal stored in the second routing device is in the third network, the corresponding routing entry is not used. When the duration exceeds the preset duration threshold, the second routing device deletes the routing entry corresponding to the first terminal in the third network.

In the implementation, the preset duration threshold of the newly added routing entry may be preset. When the length of a routing entry in the routing device is less than the preset duration threshold, the routing device may automatically delete the routing entry. The routing table item is used by the routing device to restart the calculation of the usage time of the routing entry when the routing entry is used for a content request, a path update notification, or a data transmission. For example, after the first terminal switches from the first network to the third network, the first terminal sends a first path update notification to the second routing device in the third network, and the second routing device increases the first terminal in the third network. The corresponding routing entry is automatically deleted by the second routing device when the second routing device does not use the routing time of the first terminal in the third network to reach the preset duration threshold. In addition, the routing entries added to the first routing device and the fourth routing device may also be deleted according to the deletion mechanism of the routing entry.

In the embodiment of the present invention, the first terminal receives the first content request sent by the second terminal, and transmits the data corresponding to the first content request to the second terminal, where the first content request carries the second terminal to access the The device identifier of the second routing device connected to the second network; when the first terminal detects that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the access signal quality satisfies the signal quality condition a third network, the first terminal sends a first path update notification to the second routing device, based on the device identifier of the second routing device, by the third terminal, so that the second routing device establishes a corresponding route of the first terminal in the third network. The entry is recorded as the priority routing entry of the first terminal. In this way, in the process of performing path change after the content provider performs network switching, it is not necessary to connect the core routers of multiple networks, thereby facilitating the implementation of the complex network.

Embodiment 3

Based on the same technical concept, the embodiment of the present invention further provides a first terminal. As shown in FIG. 8, the first terminal includes:

The transmitting module 810 is configured to receive a first content request sent by the second terminal, and transmit data corresponding to the first content request to the second terminal, where the first content request carries the second terminal Accessing the device identifier of the second routing device connected to the second network to which it belongs;

The access module 820 is configured to: when it is detected that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the access signal quality meets the signal quality condition of the third network;

The update module 830 is configured to send, by using the third network, a first path update notification to the second routing device, based on the device identifier of the second routing device, to enable the second routing device to establish the first A routing entry corresponding to the terminal in the third network, and recorded as a priority routing entry of the first terminal.

Optionally, as shown in FIG. 9, the first terminal further includes: an obtaining module 840, configured to acquire a device identifier of the first routing device connected to the first network;

The update module 830 is further configured to send, by using the third network, a second path update notification to the first routing device, based on the device identifier of the first routing device, to enable the first routing device to establish The routing entry corresponding to the first terminal in the third network is recorded as a priority routing entry of the first terminal.

Optionally, the transmission module 810 is further configured to:

The update module 830 is further configured to:

Optionally, as shown in FIG. 10, the first terminal further includes:

The broadcast module 850 is configured to perform content broadcast by using the third network.

Based on the same technical concept, the embodiment of the present invention further provides a second routing device. As shown in FIG. 11, the second routing device includes:

The transmitting module 1110 is configured to receive a first content request sent by the second terminal to the first terminal, forward the first content request to the first terminal, and receive data corresponding to the first content request, and Forwarding to the second terminal; wherein the first content request carries the device identifier of the second routing device;

The update module 1120 is configured to receive, by the first terminal, a first path update notification sent by the device identifier of the second routing device, where the first path update notification is detected by the first terminal The signal quality of the incoming first network does not meet the preset signal quality condition and is transmitted through the third network after accessing the third network whose signal quality meets the signal quality condition;

The establishing module 1130 is configured to establish a routing entry corresponding to the first terminal in the third network, and record the priority routing entry of the first terminal.

Optionally, as shown in FIG. 12, the second routing device further includes:

The deleting module 1140 is configured to delete the first terminal in the third network when the stored duration of the first terminal in the third network that is not used by the first terminal exceeds a preset duration threshold. The corresponding routing entry in the middle.

In the embodiment of the present invention, the first terminal receives the first content request sent by the second terminal, and transmits the data corresponding to the first content request to the second terminal, where the first content request carries the second terminal to access the Connected by the second network a device identifier of the second routing device; when the first terminal detects that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the access network quality meets the signal quality condition of the third network; Transmitting, by the third network, the first path update notification to the second routing device, by using the third network, the second routing device, to enable the second routing device to establish a routing entry corresponding to the first terminal in the third network, and Recorded as the priority routing entry of the first terminal. In this way, in the process of performing path change after the content provider performs network switching, it is not necessary to connect the core routers of multiple networks, thereby facilitating the implementation of the complex network.

Embodiment 4

Based on the same technical concept, the embodiment of the present invention further provides a system for updating a routing entry, where the system includes a first terminal and a second routing device, where:

Embodiment 5

FIG. 13 is a schematic structural diagram of a terminal according to an exemplary embodiment. The terminal can be used as the first terminal to implement the method for updating the routing entry in the foregoing embodiment.

The terminal 1300 may include an RF (Radio Frequency) circuit 110, including one or more a memory 120 of the computer readable storage medium, an input unit 130, a display unit 140, a sensor 150, an audio circuit 160, a WiFi (Wireless Fidelity) module 170, a processor 180 including one or more processing cores, and Power supply 190 and other components. It will be understood by those skilled in the art that the terminal structure shown in FIG. 13 does not constitute a limitation to the terminal, and may include more or less components than those illustrated, or a combination of certain components, or different component arrangements. among them:

The RF circuit 110 can be used for transmitting and receiving information or during a call, and receiving and transmitting signals. Specifically, after receiving downlink information of the base station, the downlink information is processed by one or more processors 180. In addition, the data related to the uplink is sent to the base station. . Generally, the RF circuit 110 includes, but is not limited to, an antenna, at least one amplifier, a tuner, one or more oscillators, a Subscriber Identity Module (SIM) card, a transceiver, a coupler, an LNA (Low Noise Amplifier). , duplexer, etc. In addition, RF circuitry 110 can also communicate with the network and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA (Code Division Multiple Access). , Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), LTE (Long Term Evolution), e-mail, SMS (Short Messaging Service), and the like.

The memory 120 can be used to store software programs and modules, and the processor 180 executes various functional applications and data processing by running software programs and modules stored in the memory 120. The memory 120 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to The data created by the use of the terminal 1300 (such as audio data, phone book, etc.) and the like. Moreover, memory 120 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, memory 120 may also include a memory controller to provide access to memory 120 by processor 180 and input unit 130.

The input unit 130 can be configured to receive input numeric or character information and to generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function controls. In particular, input unit 130 can include touch-sensitive surface 131 as well as other input devices 132. Touch-sensitive surface 131, also referred to as a touch display or trackpad, can collect touch operations on or near the user (such as a user using a finger, stylus, etc., on any suitable object or accessory on touch-sensitive surface 131 or The operation near the touch-sensitive surface 131) and driving the corresponding connecting device according to a preset program. Alternatively, the touch-sensitive surface 131 can include two portions of a touch detection device and a touch controller. Wherein, the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information. The processor 180 is provided and can receive commands from the processor 180 and execute them. In addition, the touch-sensitive surface 131 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch-sensitive surface 131, the input unit 130 may also include other input devices Prepare 132. Specifically, other input devices 132 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.

The display unit 140 can be used to display information input by the user or information provided to the user and various graphical user interfaces of the terminal 1300, which can be composed of graphics, text, icons, video, and any combination thereof. The display unit 140 may include a display panel 141. Alternatively, the display panel 141 may be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like. Further, the touch-sensitive surface 131 may cover the display panel 141, and when the touch-sensitive surface 131 detects a touch operation thereon or nearby, it is transmitted to the processor 180 to determine the type of the touch event, and then the processor 180 according to the touch event The type provides a corresponding visual output on display panel 141. Although in FIG. 13, touch-sensitive surface 131 and display panel 141 are implemented as two separate components to implement input and input functions, in some embodiments, touch-sensitive surface 131 can be integrated with display panel 141 for input. And output function.

Terminal 1300 can also include at least one type of sensor 150, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 141 according to the brightness of the ambient light, and the proximity sensor may close the display panel 141 when the terminal 1300 moves to the ear. / or backlight. As a kind of motion sensor, the gravity acceleration sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the terminal 1300 can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, not here Let me repeat.

The audio circuit 160, the speaker 161, and the microphone 162 can provide an audio interface between the user and the terminal 1300. The audio circuit 160 can transmit the converted electrical data of the received audio data to the speaker 161 for conversion to the sound signal output by the speaker 161; on the other hand, the microphone 162 converts the collected sound signal into an electrical signal by the audio circuit 160. After receiving, it is converted into audio data, and then processed by the audio data output processor 180, transmitted to the terminal, for example, via the RF circuit 110, or outputted to the memory 120 for further processing. The audio circuit 160 may also include an earbud jack to provide communication of the peripheral earphones with the terminal 1300.

WiFi is a short-range wireless transmission technology, and the terminal 1300 can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 170, which provides wireless broadband Internet access for users. Although FIG. 13 shows the WiFi module 170, it can be understood that it does not belong to the essential configuration of the terminal 1300, and may be omitted as needed within the scope of not changing the essence of the invention.

The processor 180 is a control center of the terminal 1300 that connects various portions of the entire handset with various interfaces and lines, by running or executing software programs and/or modules stored in the memory 120, and recalling data stored in the memory 120, The various functions and processing data of the terminal 1300 are performed to perform overall monitoring of the mobile phone. Optionally, the processor 180 may include one or more processing cores; preferably, the processor 180 may integrate the application processor and the modem The application processor mainly processes an operating system, a user interface, an application, etc., and the modem processor mainly processes wireless communication. It can be understood that the above modem processor may not be integrated into the processor 180.

The terminal 1300 also includes a power source 190 (such as a battery) for powering various components. Preferably, the power source can be logically coupled to the processor 180 through a power management system to manage functions such as charging, discharging, and power management through the power management system. Power supply 190 may also include any one or more of a DC or AC power source, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.

Although not shown, the terminal 1300 may further include a camera, a Bluetooth module, and the like, and details are not described herein again. Specifically, in this embodiment, the display unit of the terminal 1300 is a touch screen display, the terminal 1300 further includes a memory, and one or more programs, wherein one or more programs are stored in the memory and configured to be one or one The above processor executes one or more programs that include instructions for performing the following operations:

Receiving a first content request sent by the second terminal, and transmitting data corresponding to the first content request to the second terminal, where the first content request carries the second terminal to which the second terminal accesses a device identifier of the second routing device connected to the network;

When it is detected that the signal quality of the currently accessed first network does not satisfy the preset signal quality condition, the access signal quality satisfies the third network of the signal quality condition;

Sending, by the third network, a first path update notification to the second routing device, based on the device identifier of the second routing device, to enable the second routing device to establish the first terminal in the first The corresponding routing entry in the network is recorded as the priority routing entry of the first terminal.

Embodiment 6

FIG. 14 is a schematic structural diagram of a routing device according to an exemplary embodiment. The routing device can be used as the second routing device to implement the method for updating the routing entry in the foregoing embodiment.

FIG. 14 is a schematic structural diagram of a routing device according to an embodiment of the present invention. The routing device 1900 can vary considerably depending on configuration or performance, and can include one or more central processing units (CPUs) 1922 (eg, one or more processors) and memory 1932, one or More than one store Application 1942 or storage medium 1930 of data 1944 (eg, one or one storage device in Shanghai). Among them, the memory 1932 and the storage medium 1930 may be short-term storage or persistent storage. The program stored on storage medium 1930 may include one or more modules (not shown), each of which may include a series of instruction operations in a routing device. Still further, the central processor 1922 can be configured to communicate with the storage medium 1930 to perform a series of instruction operations in the storage medium 1930 on the routing device 1900.

Routing device 1900 can also include one or more power supplies 1926, one or more wired or wireless network interfaces 1950, one or more input and output interfaces 1958, one or more keyboards 1956, and/or one or more operating systems. 1941, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.

Routing device 1900 can include a memory, and one or more programs, wherein one or more programs are stored in the memory and configured to be executed by one or more processors, the one or more programs included for performing Instructions for the following operations:

Receiving, by the second terminal, the first content request to the first terminal, and forwarding the first content request to the first terminal, where the first content request carries the second routing device Equipment Identity;

Receiving data corresponding to the first content request, and forwarding the data to the second terminal;

Receiving, by the first terminal, a first path update notification sent by the device identifier of the second routing device, where the first path update notification is detected by the first terminal by the first network The signal quality does not meet the preset signal quality condition and is transmitted through the third network after accessing the third network whose signal quality meets the signal quality condition;

Establishing a routing entry corresponding to the first terminal in the third network, and recording the priority routing entry of the first terminal.

It should be noted that, in the method for updating the routing entry, the device for updating the routing entry in the foregoing embodiment is only illustrated by the division of the foregoing functional modules. In an actual application, the foregoing function may be allocated according to requirements. Different functional modules are completed, that is, the internal structure of the device is divided into different functional modules to complete the above described Part or part of the function. In addition, the device for updating the routing entry provided by the foregoing embodiment is the same as the method for updating the routing entry. For the specific implementation process, refer to the method embodiment, and details are not described herein again.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

A method for updating a routing entry, the method comprising:

Receiving, by the first terminal, the first content request sent by the second terminal, and transmitting the data corresponding to the first content request to the second terminal, where the first content request carries the second terminal to access the second content terminal a device identifier of the second routing device to which the second network belongs;

When the first terminal detects that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the access signal quality meets the signal quality condition of the third network;

Transmitting, by the first terminal, the first path update notification to the second routing device by using the third network, based on the device identifier of the second routing device, to enable the second routing device to establish the first A routing entry corresponding to the terminal in the third network, and recorded as a priority routing entry of the first terminal.
The method according to claim 1, wherein the first terminal detects that the signal quality of the currently accessed first network does not satisfy the preset signal quality condition, and the access signal quality satisfies the signal quality. After the third network of conditions, it also includes:

The first terminal acquires a device identifier of the first routing device connected to the first network;

Transmitting, by the first terminal, the second path update notification to the first routing device by using the third network, based on the device identifier of the first routing device, to enable the first routing device to establish the first A routing entry corresponding to the terminal in the third network, and recorded as a priority routing entry of the first terminal.
The method according to claim 2, wherein the first terminal sends the second path update to the first routing device based on the device identifier of the first routing device by using the third network. After the notice, it also includes:

The first terminal receives a second content request that is sent by the second terminal by using the fourth network, where the second content request carries the second terminal to access the fourth routing device that is connected to the fourth network. Device identification

Transmitting, by the first terminal, data corresponding to the second content request to the second terminal;

If the first terminal determines that the second terminal has a network switch according to the device identifier of the fourth routing device and the device identifier of the second routing device, the first terminal passes the third network, based on the a device identifier of the fourth routing device, configured to send a third path update notification to the fourth routing device, so that the fourth routing device establishes a routing entry corresponding to the first terminal in the third network, And recorded as the priority routing entry of the first terminal.
The method according to claim 1, wherein the first terminal detects that the signal quality of the currently accessed first network does not satisfy the preset signal quality condition, and the access signal quality satisfies the signal quality. After the third network of conditions, it also includes:

The first terminal performs content broadcast through the third network.
A method for updating a routing entry, the method comprising:

Receiving, by the second routing device, the first content request sent by the second terminal to the first terminal, and forwarding the first content to the first terminal Sending the first content request, where the first content request carries the device identifier of the second routing device;

Receiving, by the second routing device, data corresponding to the first content request, and forwarding the data to the second terminal;

The second routing device receives the first path update notification sent by the first terminal based on the device identifier of the second routing device, where the first path update notification is detected by the first terminal The signal quality of the incoming first network does not meet the preset signal quality condition and is transmitted through the third network after accessing the third network whose signal quality meets the signal quality condition;

The second routing device establishes a routing entry corresponding to the first terminal in the third network, and records the priority routing entry of the first terminal.
The method of claim 5, wherein the method further comprises:

The second routing device deletes the first terminal when the length of time that the first terminal is not used by the first terminal in the third network is less than a preset duration threshold. Corresponding routing entries in the third network.
A first terminal, the first terminal includes:

a transmitting module, configured to receive a first content request sent by the second terminal, and transmit data corresponding to the first content request to the second terminal, where the first content request carries the second terminal Entering the device identifier of the second routing device connected to the second network to which it belongs;

An access module, configured to: when it is detected that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the access signal quality meets the signal quality condition of the third network;

An update module, configured to send, by using the third network, a first path update notification to the second routing device, based on the device identifier of the second routing device, to enable the second routing device to establish the first A routing entry corresponding to the terminal in the third network, and recorded as a priority routing entry of the first terminal.
The first terminal according to claim 7, wherein the first terminal further comprises: an obtaining module, configured to acquire a device identifier of the first routing device connected to the first network;

The update module is further configured to send, by using the third network, a second path update notification to the first routing device, based on the device identifier of the first routing device, to enable the first routing device to establish a location The routing entry corresponding to the first terminal in the third network is recorded as a priority routing entry of the first terminal.
The first terminal according to claim 8, wherein the transmission module is further configured to:

Receiving, by the second terminal, the second content request sent by the second terminal, where the second content request carries the device identifier of the fourth routing device connected to the fourth network by the second terminal; Transmitting, by the second terminal, data corresponding to the second content request;

The update module is further configured to:

If it is determined that the second terminal has a network switch according to the device identifier of the fourth routing device and the device identifier of the second routing device, the device identifier based on the fourth routing device is used by the third network. The fourth route The device sends a third path update notification, so that the fourth routing device establishes a routing entry corresponding to the first terminal in the third network, and records the priority routing entry of the first terminal.
The first terminal according to claim 7, wherein the first terminal further comprises:

And a broadcast module, configured to perform content broadcast by using the third network.
A second routing device, the second routing device includes:

a transmitting module, configured to receive a first content request sent by the second terminal to the first terminal, forward the first content request to the first terminal, receive data corresponding to the first content request, and forward the data Giving the second terminal; wherein the first content request carries the device identifier of the second routing device;

An update module, configured to receive a first path update notification sent by the first terminal based on a device identifier of the second routing device, where the first path update notification is detected by the first terminal The signal quality of the first network does not satisfy the preset signal quality condition and is transmitted through the third network after accessing the third network whose signal quality meets the signal quality condition;

The establishing module is configured to establish a routing entry corresponding to the first terminal in the third network, and record the priority routing entry of the first terminal.
The second routing device according to claim 11, wherein the second routing device further comprises:

a deleting module, configured to delete the first terminal in the third network when the stored duration of the first terminal in the third network that is not used by the first terminal exceeds a preset duration threshold Corresponding routing entry.
A system for updating a routing entry, the system comprising a first terminal and a second routing device, wherein:

The first terminal is configured to receive a first content request sent by the second terminal, and transmit data corresponding to the first content request to the second terminal, where the first content request carries the first The second terminal accesses the device identifier of the second routing device connected to the second network to which the terminal belongs; when it is detected that the signal quality of the currently accessed first network does not meet the preset signal quality condition, the access signal quality satisfies a third network of the signal quality condition; sending, by the third network, a first path update notification to the second routing device based on the device identifier of the second routing device;

The second routing device is configured to receive a first content request sent by the second terminal to the first terminal, forward the first content request to the first terminal, and receive the first content request corresponding to the first content request Data, and forwarded to the second terminal; receiving a first path update notification sent by the first terminal based on the device identifier of the second routing device; establishing corresponding to the first terminal in the third network The routing entry is recorded as the priority routing entry of the first terminal.