WO2017088101A1

WO2017088101A1 - Network access information acquiring method, and router

Info

Publication number: WO2017088101A1
Application number: PCT/CN2015/095325
Authority: WO
Inventors: 刁猛
Original assignee: 华为技术有限公司
Priority date: 2015-11-23
Filing date: 2015-11-23
Publication date: 2017-06-01
Also published as: CN108307694B; CN108307694A

Abstract

The present invention relates to the technical field of mobile communications, and particularly relates to a method for acquiring network access information and a router, for addressing the technical problem of how a new router can automatically acquire the network access information of an old router. In the present invention, the new router can receive, via an LAN interface, a data packet transmitted by the old router via a WAN interface, so that the new router can directly acquire the network access information of the old router via the received data packet, thus resolving the technical problem of how a new router can automatically acquire the network access information of an old router.

Description

Network connection information acquisition method and router

Technical field

The present invention relates to the field of communications technologies, and in particular, to a network connection information acquiring method and a router.

Background technique

At present, many users' home networks access Ethernet (Ethernet) through Asymmetric Digital Subscriber Line (ADSL) or fiber-to-the-home (ADSL). At this time, operators generally deploy ADSL in the user's home network. Terminal or Passive Optical Network (PON) terminal. However, with the growing demand for WIreless-Fidelity (Wi-Fi) Internet access, many users will re-buy a wireless router to replace the ADSL terminal or PON deployed in the user's home in order to solve the Wi-Fi coverage of the home. The terminal accesses the Ethernet.

Generally, there are three types of network access methods for a router: 1. Point-to-Point Protocol over Ethernet (PPPoE) dial-up authentication (referred to as dial-up authentication); 2. Dynamic allocation of address methods. That is, the method of automatically assigning an address through a Dynamic Host Configuration Protocol (DHCP) server; 3. The static address mode, that is, a method of inputting a known Internet Protocol (IP) address.

When a user replaces the old router (the router that is connected to the uplink network) with the new router (the router that will connect to the uplink network), it is generally necessary to first understand the network access mode adopted by the old router, and then manually follow the network of the old router. The access mode sets up a new router so that the new router can successfully connect to the upstream network. If the old router adopts the PPPoE authentication mode, the user needs to know the user name and password. Generally, the user name and password of the broadband access can be entered only once when the old router is initially installed. The subsequent use automatically saves the saved username and password. The network connection is made, so when the user replaces the old router, the user name and password are generally not remembered; if the old router adopts the network access mode as the static address mode, the user also needs to obtain the IP address first, and the ordinary user does not know how to obtain the IP address. Both bring a lot of trouble to replace the new router.

In summary, how the new router automatically obtains the network connection information of the old router will be an urgent problem to be solved.

Summary of the invention

The present application provides a network connection information acquisition method and a router, which are used to solve the technical problem of how a new router automatically acquires network connection information of an old router.

In a first aspect, a method for acquiring network connection information is provided, which is applied to a new router having the capability of acquiring network connection information of an old router, including:

Receiving, by the new router, a data packet by using a LAN interface of the new router, where the data packet includes an Ethernet packet sent by the old router to a LAN interface of the new router by using a WAN interface of the old router;

The new router determines the network connection information of the old router according to the data packet.

In this application, the new router can receive data packets sent by the old router through the Wide Area Network (WAN) interface through a Local Area Network (LAN) interface, and the data packets sent by the old router through the WAN interface are generally They are normally sent to the servers in the uplink network at work, so the new router is equivalent to intercepting the data packets sent by the old router to the servers in the uplink network. Then, the new router can directly obtain the network connection information of the old router through the received data packet, and solve the technical problem of how the new router automatically acquires the network connection information of the old router, and then the new router can directly use the obtained network connection information and The uplink network connection eliminates the need for the user to manually configure the new router, which simplifies the process of enabling the new router, reduces the chance of error caused by manual processing by the user, and reduces the burden on the user.

In conjunction with the first aspect, in a first possible implementation manner of the first aspect, the network connection information includes one or more of authentication information, a network connection manner, or an IP address.

Because the network access mode of the old router may be different, the obtained network connection information may also be different, but regardless of the network access mode, the obtained network connection information may include authentication information, network connection mode or IP address. One or more, so as to ensure that the new router can It is enough to get the network connection information of the relatively complete old router.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the new router determines network connection information of the old router according to the data packet, including:

If the data packet is an Ethernet packet and is a broadcast packet, and the data packet includes a PPPoE packet, the new router determines that the network connection mode of the old router is a dialing authentication mode;

The new router accepts a PPPoE session initiated by the old router; wherein the new router works in a PPPoE Server mode;

In the PPPoE session flow of the new router and the old router, the new router acquires the authentication information of the old router.

If the new router determines that the network connection mode of the old router is the dial-up authentication mode, the new router can also enter the PPPoE server mode, and obtain the authentication information of the old router through the PPPoE session flow with the old router, so that the obtained authentication information can be obtained. The dial-up authentication mode is used to access the uplink network. That is, the new router can obtain the authentication information and access the uplink network by itself. The user does not need to manually operate the user name and password of the old router, thereby reducing the burden on the user and improving the user's burden. The user experience also enhances the intelligence and usability of the new router.

With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the new router determines network connection information of the old router according to the data packet, including:

If the data packet is an Ethernet packet and is a broadcast packet, and the data packet includes a DHCP broadcast packet, the new router determines that the network connection mode of the old router is a dynamic allocation address mode.

With reference to the first possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the new router determines, according to the data packet, the network connection information of the old router, including:

If the data packet is an Ethernet packet and is a non-broadcast packet, and the data packet includes The IP packet, the new router determines whether the source address of the IP packet is legal;

If the source address of the IP packet is valid, the new router determines that the network connection mode of the old router is a static address mode, and the IP address is a source address of the IP packet.

The new router can determine the network connection mode of the old router according to the received data packet, and can perform uplink network access according to different network connection modes without user participation. For example, if the data packet contains an IP packet, the new router can obtain the source address of the IP packet, so that the source address of the IP packet can be used as the IP address for the uplink network connection, and the user does not need to obtain the IP address. To reduce the burden on users.

With the second possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, after acquiring the authentication information of the old router, the method further includes:

The new router switches from the PPPoE Server mode to the PPPoE client mode;

In the PPPoE client mode, the new router uses the obtained network connection information to perform network connection.

When the new router obtains the authentication information, the new router works in the PPPoE server mode, and when the uplink network connection is made, the new router needs to work in the PPPoE client mode. Therefore, after obtaining the authentication information, the new router can be from the PPPoE server mode. Switch to the PPPoE client mode, so that the new router can obtain the authentication information by itself or the uplink network connection without any user participation, and the new router can switch the working mode by itself or avoid errors.

With reference to the first aspect or the first possible implementation manner of the first aspect to the fifth possible implementation manner, in the sixth possible implementation manner of the first aspect, After the new router receives the data packet through the LAN interface of the new router, the method further includes:

The new router records a source media access control MAC address of the data packet, and sets the source MAC address as a MAC address of a WAN interface of the new router.

There are still many Internet Service Providers (ISPs) that have MAC addresses bound to them. That is, only routers with specific MAC addresses can connect to the network. For example, in a home, if you use the old router for the first time. Network connection, then the ISP will determine the MAC address of the old router, and if you change other routers, because the router's MAC address changes The ISP may not provide a network connection. Therefore, in this application, a new function can be added to the new router, that is, the MAC address of another router (such as an old router) can be automatically detected and obtained as the MAC address of the WAN interface of the router, thereby ensuring that the new router can replace the old router for uplink. Network connection, try to avoid the situation that the new router can not connect to the uplink network.

In a second aspect, a first router is provided, the router having the capability of acquiring network connection information of an old router, the router comprising:

a LAN interface, configured to receive a data packet, where the data packet includes an Ethernet packet sent by the old router to the LAN interface by using a WAN interface of the old router;

And a processor, configured to determine, according to the data packet, the network connection information of the old router.

In conjunction with the second aspect, in a first possible implementation manner of the second aspect, the network connection information includes one or more of authentication information, a network connection manner, or an IP address.

In conjunction with the first possible implementation of the second aspect, in a second possible implementation of the second aspect, the processor is configured to:

If the data packet is an Ethernet packet and is a broadcast packet, and the data packet includes a PPPoE packet, determining that the network connection mode of the old router is a dialing authentication mode;

Accepting a PPPoE session initiated by the old router; wherein the router works in a PPPoE Server mode;

And obtaining, in the PPPoE session flow of the router and the old router, authentication information of the old router.

In conjunction with the first possible implementation of the second aspect, in a third possible implementation of the second aspect, the processor is configured to:

If the data packet is an Ethernet packet and is a broadcast packet, and the data packet includes a DHCP broadcast packet, the network connection mode of the old router is determined to be a dynamically allocated address mode.

In conjunction with the first possible implementation of the second aspect, in a fourth possible implementation of the second aspect, the processor is configured to:

If the data packet is an Ethernet packet and is a non-broadcast packet, and the data packet includes The IP packet determines whether the source address of the IP packet is legal.

If the source address of the IP packet is valid, the network connection mode of the old router is determined to be a static address mode, and the IP address is a source address of the IP packet.

In conjunction with the second possible implementation of the second aspect, in a fifth possible implementation of the second aspect, the processor is further configured to:

After acquiring the authentication information of the old router, the router is switched from the PPPoE server mode to the PPPoE client mode;

In the PPPoE client mode, the obtained network connection information is used for network connection.

With reference to the second aspect or the first possible implementation manner of the second aspect, the possible implementation manner of the fifth possible implementation manner, in the sixth possible implementation manner of the second aspect, The processor is also used to:

After receiving the data packet, the LAN interface records a source media access control MAC address of the data packet, and sets the source MAC address as a MAC address of the WAN interface of the router.

In a third aspect, a second router is provided having the capability to obtain network connection information for an old router, the router including means for performing the method of the first aspect.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly described below. It is obvious that the following drawings are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

FIG. 1A is a schematic diagram of a scenario in which a terminal accesses an Ethernet through a router;

FIG. 1B is a schematic diagram of a connection between a new router and an old router according to an embodiment of the present invention; FIG.

2 is a first flowchart of a network connection method according to an embodiment of the present invention;

3 is a schematic diagram of a format of an Ethernet broadcast packet according to an embodiment of the present invention;

4 is a schematic diagram of obtaining authentication information through a PPPoE session process according to an embodiment of the present invention;

FIG. 5 is a second flowchart of a network connection method according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention.

Hereinafter, some of the terms in the present invention will be explained.

1) The old router is a router that is already connected to the upstream network.

The new router, which is the router that will connect to the upstream network, is used to replace the old router.

2) "Multiple" means two or more. "and/or", describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately. In addition, the character "/", unless otherwise specified, generally indicates that the contextual object is an "or" relationship.

The application scenario of the embodiment of the present invention is first introduced.

Please refer to FIG. 1A, which is a schematic diagram of a scenario in which a terminal accesses an Ethernet through a router. The terminal 1 in FIG. 1 is, for example, a mobile phone, and the terminal 2 is, for example, a personal computer (PC). The terminal 1 and the terminal 2 are connected to the router 1 by wireless, and the router 1 is connected to the Internet (Internet) to implement the terminal 1. And the connection of terminal 2 to the Internet.

Among them, the router 1 is integrated with a modem (modulator-demodulator, modem), so it can be directly connected to the Internet. If the modem is not integrated in the router 1, the router 1 can connect to the modem through the Ethernet, and the modem is connected to the Internet, thereby realizing the connection between the terminal 1 and the terminal 2 and the Internet.

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

In the embodiment of the present invention, when the old router is to be replaced by a new router, the technical solution provided in the embodiment of the present invention may be adopted.

In addition, please refer to FIG. 1B , which is a schematic diagram of a wiring manner according to an embodiment of the present invention. FIG. 1B is an example of a home scenario. In Figure 1B, the WAN interface of the new router is connected to the Ethernet port in the home to access the Internet. The LAN interface of the new router should be connected to the network in the home. The device is connected, for example, to a device such as a personal computer (PC). However, in order to implement the technical solution of the embodiment of the present invention, the new router may be first connected to the uplink network, and then the LAN interface of the new router is connected with the device in the home, that is, when the new router is replaced with the old router, the new router may be newly added. The LAN interface of the router is connected to the WAN interface of the old router. As shown in FIG. 1B, after the two interfaces are connected, the new router can perform the network connection information obtaining method provided by the embodiment of the present invention.

In general, old routers often interact with upstream network devices when they work. For example, if the old router uses a network connection that dynamically allocates addresses, the old routers will work with upstream network devices such as DHCP servers. Interact. The old router generally sends the data packet to the upstream network device through the WAN interface of the old router, and also receives the data packet of the old uplink network device through the WAN interface of the old router. In the embodiment of the present invention, the LAN of the new router is used. After the interface is connected to the WAN interface of the old router, for the old router, it will consider the new router as an uplink network device, so the Ethernet packet will be sent normally through the WAN interface, and the new router can intercept the old router. All data packets to the upstream network device.

The data packet may include an Ethernet packet, that is, a data packet sent by the old router to the LAN interface of the new router through the WAN interface of the old router, and may include the LAN sent by the old router to the new router through the WAN interface of the old router. Ethernet packet of the interface.

Referring to FIG. 2, an embodiment of the present invention provides a method for acquiring network connection information, which can be applied to a new router having the capability of acquiring network connection information of an old router. The process of the method is described as follows.

Step 201: The new router receives the data packet through the LAN interface of the new router. The data packet includes the first Ethernet packet sent by the old router to the LAN interface of the new router through the WAN interface of the old router.

Step 202: The new router determines network information of the old router according to the data packet.

Optionally, the new router may have at least two modes, for example, at least a normal working mode and a detecting mode. The new router can work normally after connecting to the upstream network. In this mode, the new router can provide normal network connectivity for devices in the home through the uplink network. The new router can work in the detection mode when performing the work of obtaining the network connection information provided in the embodiment of the present invention. In the detection mode, the new router can obtain the network connection information of the old router.

For example, when the new router is shipped from the factory, it can be set to the detection mode by default, or it can be automatically switched to the detection mode when the uplink network is not detected, or the user can manually switch the new router to the detection mode (for example, the user can press The corresponding button on the new router to switch the mode of the new router), and so on.

For example, after the uplink network connection is successful, the new router can automatically switch to the normal working mode, or the new router can be set to the normal working mode by default, or the user can manually switch the new router to the normal working mode, etc. Wait.

Optional,

Before the new router receives data packets through the LAN interface of the new router, it also includes:

The new router starts the timer;

The new router receives data packets through the LAN interface of the new router, including:

Before the timer expires, the new router receives data packets through the LAN interface of the new router.

The timer is started to give a time limit for the network connection information acquisition process, because it does not rule out that the old router may not send data packets through the WAN interface for a long time, if the new router still waits for reception in this case. In this case, the power consumption is large for the new router, and it is also useless. Therefore, the new router can set a timer. After the LAN interface of the new router is connected to the WAN interface of the old router, the new router can start the timer. Before the timer expires, the new router can receive the datagram sent by the old router. After the timer expires, the new router can stop receiving whether the new router receives the data packet, thereby reducing the power consumption of the new router. The duration of the timer may be set when the new router is shipped from the factory, or may be set by the user, which is not limited by the embodiment of the present invention.

Generally, when the uplink network connection is stable, the old router may not send data packets through the WAN interface, or may send a small number of data packets. In this case, the new router It may not be easy to receive data messages. Then, in order to ensure that the new router can receive the data packets sent by the old router, after connecting the LAN interface of the new router with the WAN interface of the old router, the old router can be restarted, and the old router may go up the network device after restarting. Send a data packet so that the new router can receive data packets sent by the old router through the LAN interface.

Optionally, if the new router has not intercepted any data packet after the timer expires, or if the data packet is intercepted but the network connection information of the old router cannot be obtained through the intercepted data packet, the new router may The network connection continues in the manner of the prior art.

Referring to FIG. 3, it is a possible format of an Ethernet packet. An Ethernet packet includes a destination media access control (MAC) address (generally occupying 6 bytes) and a source MAC address (generally Occupies 6 bytes), type (also known as protocol type field, generally occupies 2 bytes), data (that is, the data carried by the message, generally occupy 46-1500 bytes), and generally occupy 4 Byte's Frame Check Sequence (FCS).

Optionally, to determine the network connection information of the old router according to the Ethernet packet, it is necessary to first determine the type of the Ethernet packet, and the network connection information indicated by the different types is different. The type of an Ethernet packet can be determined by the protocol type field in the Ethernet packet.

Optionally, the network connection information includes one or more of authentication information, a network connection manner, or an IP address.

For example, the network connection mode may include a dialing authentication method, a dynamic allocation address mode, and a static address mode. If the network connection mode of the old router obtained by the new router is the dial-up authentication mode, the new router also needs to obtain the authentication information of the old router, so that the network connection is performed through the authentication information, and the authentication information may include, for example, a username and/or a password. Etc.; if the network connection mode of the old router obtained by the new router is static address mode, then the new router also needs to obtain the IP address of the old router, thereby making a network connection through the IP address.

The following describes how the new router obtains network connection information.

First, the dial-up authentication method.

The new router receives the data packet sent by the old router through the LAN interface. The new router parses the received data packet. If the data packet in the received data packet is an Ethernet packet, If the destination MAC address of the Ethernet packet is FF:FF:FF:FF:FF:FF, the new router determines that the Ethernet packet is a broadcast packet. If the value of the protocol type field in the broadcast packet is 0x8863, the new router can determine that the broadcast packet is a PPPoE broadcast packet, and the new router determines that the network connection mode of the old router is the dial-up authentication mode, and the new router determines that the authentication information of the old router needs to be further obtained.

Optionally, after determining that the network connection mode of the old router is the dial-up authentication mode, the new router can enter the PPPoE server mode. At present, the router generally works only in the PPPoE client mode. The PPPoE server mode is generally the working mode of the server. In the embodiment of the present invention, in order to enable the new router to perform a PPPoE session, it is necessary to improve the new router so that the new router can simulate working in the PPPoE Server mode.

After the new router enters PPPoE Server mode, it can accept the PPPoE session initiated by the old router. Generally, after the old router sends the PPPoE broadcast message to the upstream network device (in the embodiment of the present invention, the new router receives the PPPoE broadcast message), the old router initiates a PPPoE session to the uplink network device, and then the present invention In the embodiment, the new router working in the PPPoE Server mode can accept the PPPoE session initiated by the old router, and the new router can obtain the authentication information of the old router through the PPPoE session flow with the old router.

Currently, the PPPoE session flow can be divided into three phases, namely the Discovery phase, the Session phase, and the Terminate phase.

Please refer to FIG. 4, which is a schematic diagram of the interaction of the PPPoE session flow between the new router and the old router. The first is the Discovery phase, which consists of four processes. After completion, both the new router and the old router will know the PPPoE session ID number (Session_ID) and the other party's Ethernet address. These parameters together determine the unique PPPoE Session.

First, the old router sends a PPPoE Active Discovery Initiation (PADI) packet by broadcast, and the PADI packet contains the service type information that the old router wants.

After receiving the PADI message, the new router compares the service requested in the PADI message with the service that it can provide. If it can provide, it replies to the old router with PPPoE through unicast. Proactively discover the PPPoE Active Discovery Offer (PADO) message.

After receiving the PADO packet, the old router sends a PPPoE Active Discovery Request (PADR) packet to the new router through unicast.

The new router generates a unique session ID (ie, Session_ID) that identifies the current PPPoE session with the old router. The new router sends a PPPoE Active Discovery Session-Confirmation (PADS) packet to the old router, and carries the Session_ID in the PADS packet and sends it to the old router.

If no error occurs in the above process, the PPPoE session is established, the Discovery phase ends, and then enters the Session phase.

The work in the Discovery phase establishes a session between the new router and the old router, and then enters the Session phase. The Session phase can be divided into two parts. The first part is the Point to Point Protocol (PPP) negotiation phase. The second part is the PPP packet transmission phase after the PPP negotiation phase ends.

The PPP negotiation mode of the PPPoE is the same as that of the normal PPP negotiation mode. The link control protocol (LCP) negotiation phase, the authentication phase, and the Network Control Protocol (NCP) phase are three. stage.

The first is the LCP negotiation phase. The LCP negotiation phase mainly completes the tasks of establishing, configuring, and detecting data link connections.

Generally, in the LCP negotiation phase, the communication parties can adopt different authentication methods, for example, a Password Authentication Protocol (PAP) authentication method, or a Challenge Handshake Authentication Protocol (CHAP). In the embodiment of the present invention, the PPPoE session is performed to obtain the authentication information when the old router performs the network connection through the dial-up authentication mode. Therefore, in the embodiment of the present invention, the new router and the old router are in the LCP negotiation phase. PAP authentication is used for authentication.

In the PAP authentication mode, the old router sends the authentication information of the dial-up authentication mode to the new router in plain text. As shown in Figure 4, the old router sends a PAP Request to the new router, and the authentication information is carried in plain text. In the PAP Request. In the embodiment of the present invention, an example of authentication information For example, it may include information such as a username and password for network connection through dial-up authentication.

After the new router obtains the authentication information of the old router, the new router can respond to the authentication failure (PAP NAK) to the old router because there is no need to continue the subsequent session flow. Thus, the PPP session process is terminated.

Afterwards, the new router can send a PPPoE Active Discovery Terminate (PADT) packet to the old router to terminate the PPPoE session. Alternatively, the PADT packet can be sent to the new router by the old router.

At this point, the PPPoE session process ends, and the new router can be switched back to the normal PPPoE client mode, and the authentication information can be connected to the uplink network through dial-up authentication.

In addition, after the new router is successfully connected to the uplink network, the prompt information may be output. The prompt information is used to prompt the user that the uplink network is successfully connected. After receiving the prompt information, the user may disconnect the connection between the new router and the old router. Devices in the home that require network connectivity are connected to the LAN interface of the new router so that they can be networked through the new router.

For example, the prompt information may be an audible prompt, or may be a text prompt (for example, the new router sends information to the terminal used by the user), or may be a vibration prompt, or may be other types of prompts, such as The indicator light set on the new router is blinking, and the like, and the type of the prompt information is not limited in the embodiment of the present invention.

Now when the user replaces the router, if the original router is connected by dial-up authentication, the user needs to re-acquire the username and password of the old router. If the time is too long, the user may need to log in to the old one. It is very troublesome to obtain the web page of the router or obtain it by calling the operator. In the manner provided by the embodiment of the present invention, even if the mode is dial-up authentication, the new router can automatically obtain the authentication information of the old router without manual operation by the user, which greatly reduces the burden on the user.

Second, the dynamic allocation of address methods.

The new router receives the data packet sent by the old router through the LAN interface, and the new router parses the received data packet. If the data packet in the received data packet is an Ethernet packet, and the Ethernet packet is The destination MAC address is FF:FF:FF:FF:FF:FF, then the new router determines the The Ethernet packet is a broadcast packet. If the value of the protocol type field in the broadcast packet is 0x0800 (IPv4 packet) or 0x86DD (IPv6 packet), it is determined that the broadcast packet is an IP broadcast packet, and then If the protocol type of the IP broadcast packet is the User Datagram Protocol (UDP), if it is a UDP broadcast packet, and the original port of the broadcast packet is 68 and the destination port is 67, the new router can If the broadcast packet is determined to be a DHCP broadcast packet, the new router determines that the network connection mode of the old router is dynamically allocated.

In the embodiment of the present invention, if the new router determines that the network connection mode of the old router is the dynamic allocation address mode, the new router may send a request message to the DHCP server, where the request message is used to request the DHCP server to allocate a dynamic address for the new router. If the DHCP server assigns a dynamic address to the new router, the new router can connect to the network based on the assigned dynamic address.

Third, the static address mode.

The new router receives the data packet sent by the old router through the LAN interface, and the new router parses the received data packet. If the data packet in the received data packet is an Ethernet packet, and the Ethernet packet is If the destination MAC address is not FF: FF: FF: FF: FF: FF, the new router determines that the Ethernet packet is a non-broadcast packet. If the value of the protocol type field in the non-broadcast packet is 0x0800 or 0x86DD, If the non-broadcast packet is an IP packet, the new router can determine whether the source address (ie, the source IP address) of the IP packet is legal. If the source address of the IP packet is valid, the new router determines the network of the old router. The connection mode is static address mode, and the new router determines that the IP address to be obtained is the source address of the IP packet.

In the embodiment of the present invention, if the new router determines that the network connection mode of the old router is the static address mode, the new router can use the source address of the IP packet as the address of the WAN interface of the new router to connect to the network.

At present, if the network is connected by a static address, the user needs to manually input the IP address, and the operations in the embodiment of the present invention can be automatically completed by the new router, which reduces the burden on the user and reduces the manual operation of the user. The chance of error.

For a broadcast packet, other types of broadcast packets may not be used to obtain the network connection information of the old router, except for the broadcast packets of the PPPoE type and the broadcast packets of the DHCP type. Therefore, if the new router receives the broadcast packet before the timer expires, and determines that the received broadcast packet is neither a PPPoE type broadcast message nor a DHCP type broadcast message, the new router can discard the received broadcast message. , can not get the network connection information of the old router.

For a non-broadcast packet, other types of non-broadcast packets may not be used to obtain the network connection information of the old router except for the IP packets with the legal source address. Therefore, if the new router receives the timer before the timer expires. If the non-broadcast packet is not an IP packet or an IP packet with an invalid source address, the new router can discard the received packets and cannot obtain the network connection information of the old router.

Optionally, although the old router may connect to the network through only one type of network connection, for example, it may be through dial-up authentication, some old routers may send multiple types of Ethernet when sending Ethernet packets through the WAN interface. A packet, for example, may send a PPPoE broadcast packet, may also send a DHCP broadcast packet, or may send an IP packet. If this is the case, the new router may receive a plurality of different types of Ethernet packets before the timer expires. In this case, the embodiment of the present invention assigns priorities to the network connection manners according to the stability of the network connection. For example, the dial-up authentication method has the highest priority, followed by the dynamic allocation of the address mode. The lowest priority is the static address mode. If the new router receives multiple different types of Ethernet packets, the new router can follow the priority. The high to low order determines the network connection of the old router. The following examples are presented.

Optionally, before the timer expires, if the new router receives two different types of Ethernet packets, for example, the first Ethernet packet and the second Ethernet packet, where the first Ethernet packet is, for example, For the PPPoE broadcast packet, the second Ethernet packet is a DHCP broadcast packet, for example, the new router can determine the network connection mode of the old router as the dialing authentication mode indicated by the PPPoE broadcast packet according to the priority of each network connection mode. That is, because the network connection is higher and the network connection is more stable when the network connection is performed by the dial-up authentication method, the embodiment of the present invention preferentially uses the dial-up authentication method for network connection.

Optionally, before the timer expires, if the new router receives two different types of Ethernet packets, for example, the first Ethernet packet and the third Ethernet packet, where the first Ethernet packet is received. For example, the packet is a PPPoE broadcast packet, and the third Ethernet packet is an IP packet, for example, the third Ethernet packet is a non-broadcast packet with a legal source address. You can determine the network connection mode of the old router as the dialing authentication mode indicated by the PPPoE broadcast packet.

Optionally, before the timer expires, if the new router receives three different types of Ethernet packets, for example, the first Ethernet packet, the second Ethernet packet, and the third Ethernet packet, where The first Ethernet packet is a PPPoE broadcast packet, for example, the second Ethernet packet is a DHCP broadcast packet, and the third Ethernet packet is an IP packet, for example, the priority of the new router according to each network connection manner. The network connection mode of the old router can be determined as the dialing authentication mode indicated by the PPPoE broadcast packet.

Optionally, before the timer expires, if the new router receives two different types of Ethernet packets, for example, the second Ethernet packet and the third Ethernet packet, where the second Ethernet packet is, for example, For the DHCP broadcast packet, the third Ethernet packet is, for example, an IP packet. The new router can determine the network connection mode of the old router as the dynamic address allocation mode indicated by the DHCP broadcast packet according to the priority of each network connection mode. .

Optionally, in the case that the new router receives both the PPPoE broadcast packet and the DHCP broadcast packet, if the new router fails to connect to the network through dial-up authentication, the new router can re-connect the network by dynamically assigning the address. If the new router fails to connect to the network by dynamically assigning addresses, the new router can connect to the network in the manner provided in the prior art.

Optionally, in the case that the new router receives both the PPPoE broadcast packet and the IP packet, if the new router fails to connect to the network through dial-up authentication, the new router can reconnect to the network by using a static address. If the new router fails to connect to the network using a static address, the new router can connect to the network in the manner provided in the prior art.

Optionally, in the case that the new router receives both the PPPoE broadcast packet and the DHCP broadcast packet and the IP packet, if the new router fails to connect to the network through dial-up authentication, the new router can re-use the dynamically assigned address. Way to connect to the network. If the new router fails to connect to the network by dynamically assigning addresses, the new router can continue to connect using static addresses. The internet. If the static address mode also fails to connect to the network, the new router can connect to the network in the manner provided in the prior art.

Optionally, if the new router receives both the DHCP broadcast packet and the IP packet, if the new router fails to connect to the network through the dynamic address allocation mode, the new router can reconnect to the network by using a static address. If the new router fails to connect to the network using a static address, the new router can connect to the network in the manner provided in the prior art.

Optionally, in the case that the new router only receives the PPPoE broadcast message, if the new router fails to connect to the network through the dial-up authentication mode, the new router can connect to the network in the manner provided in the prior art.

Optionally, in the case that the new router only receives the DHCP broadcast packet, if the new router fails to connect to the network through the dynamic address allocation manner, the new router can connect to the network in the manner provided in the prior art.

Optionally, in the case that the new router only receives the non-broadcast IP packet with the legal source address, if the new router fails to connect to the network through the static address mode, the new router can connect to the network by using the method provided in the prior art. .

Referring to FIG. 5, it is a detailed flowchart of a network connection method according to an embodiment of the present invention. The flowchart generally describes various steps as before. Because the various steps involved in the flowchart and various transition relationships have been introduced in the foregoing, no further details are provided here.

Optionally, there are still a lot of ISPs that have MAC addresses bound to them. That is, only routers with specific MAC addresses can connect to the network. For example, in a home, if the old router is used for the first time, the ISP will The MAC address of the old router is determined. If another router is changed, the ISP may not provide a network connection because the MAC address of the router has changed.

In order to solve this problem, in the embodiment of the present invention, a new function may be added to the router, that is, the MAC address of another router may be automatically detected and obtained as the MAC address of the WAN interface of the router. This feature can be turned on automatically when the router leaves the factory, or it can be enabled by the user when needed.

Then, if the new router has this feature, then the LAN interface of the new router and the old router After the WAN interface is connected, the new router receives the data packet sent by the old router, and the new router can record the source MAC address carried by the received data packet, and use the recorded source MAC address as the MAC address of the WAN interface of the new router. For network connection. The source MAC address carried by the new router through the LAN interface is the MAC address of the old router. That is, the new router is equivalent to the MAC address of the old router.

The data packet of the source MAC address of the new router may be a PPPoE broadcast packet, or a DHCP broadcast packet, or an IP packet with a legal source address, or other types of broadcast packets, or Is other types of non-broadcast messages, and so on. In addition, the new router records the data packet of the source MAC address, which may be the first data packet sent by the old router after the LAN interface of the new router is connected to the WAN interface of the old router, or may be any data sent by the old router. Message.

The device in the embodiment of the present invention is described below.

Based on the same inventive concept, an embodiment of the present invention provides a router, which may include a LAN interface and a processor.

The router may include one or more LAN interfaces.

Optionally, the router may also include other interfaces, for example, may also include a WAN interface for communicating with an uplink network device (eg, a DHCP server, etc.).

Similarly, the router can also include one or more WAN interfaces.

The processor may be a central processing unit or an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, and may be a field programmable gate array (Field Programmable Gate Array). , FPGA) developed hardware circuit, which can be a baseband chip.

These LAN interfaces and WAN interfaces can be connected to the processor via a bus, or they can be connected to the processor through dedicated connection lines.

By programming the processor, the code corresponding to the method shown above is solidified into the chip, so that the chip can execute the method shown in FIG. 2 during operation. How to design and program the processor is a technique well known to those skilled in the art, and details are not described herein.

The router can be used to perform the method described above with respect to FIG. 2, such as a new router as previously described.

The LAN interface of the new router can be connected to the WAN interface of the old router. The new router can receive the data packet sent by the old router through the LAN interface, so that the processor can obtain the network connection information of the old router according to the received data packet.

The new router receives the data packet sent by the old router, and the processor parses the received data packet. For example, by analyzing the destination MAC address and the protocol field type of the data packet, the processor can determine the type of the data packet.

Optionally, if the received data packet includes an Ethernet packet, for example, a PPPoE broadcast packet, and the processor determines that the network connection mode of the old router is a dial-up authentication mode, the processor may enable the new router to enter the PPPoE server mode. After the new router enters the PPPoE server mode, the processor can accept the PPPoE session initiated by the old router, so that the processor can obtain the authentication information of the old router through the PPPoE process with the old router. After obtaining the authentication information of the old router, the processor can connect to the uplink network by using the obtained authentication information and dialing authentication.

Optionally, if it is determined that the received data packet includes an Ethernet packet, for example, a DHCP broadcast packet, and the processor determines that the network connection mode of the old router is dynamically allocated, the processor may send a request message to the DHCP server. The request message is used to request the DHCP server to assign a dynamic address to the new router. If the DHCP server assigns a dynamic address to the processor, the processor can connect to the uplink network according to the assigned dynamic address.

Optionally, if it is determined that the received data packet is an Ethernet packet, for example, the non-broadcast packet is an IP packet, the processor may determine whether the source address of the IP packet is legal, if the IP packet is If the source address is valid, the processor determines that the network connection mode of the old router is a static address mode, and the processor determines that the IP address to be obtained is the source address of the IP packet. After obtaining the source address of the IP packet, the processor can use the source address of the IP packet as the address of the WAN interface of the new router to connect to the uplink network.

Optionally, the new router can also clone the MAC address of the old router if needed. For example, if the processor receives the data packet sent by the old router through the LAN interface, then the processor passes the After the data packet is parsed, the source MAC address of the data packet can be obtained. The source MAC address of the data packet is the MAC address of the old router, and the processor can record the source carried by the data packet. MAC address, and set the source MAC address carried in the data packet to the MAC address of the WAN interface of the new router.

For more functions and functions implemented by each functional unit in the router, refer to the description of the method part of FIG. 2, and details are not described herein.

Based on the same inventive concept, an embodiment of the present invention further provides a router, which may include a receiving module and a processing module.

In an actual application, the physical device corresponding to the processing module may be a processor as described above, and the physical device corresponding to the receiving module may be a LAN interface as described above. When the processing module communicates with an upstream network device (such as a DHCP server, etc.), it can be implemented through the WAN interface as described above.

The router can be used to perform the method described above with respect to Figure 2, for example the router can be a new router as previously described. Therefore, for the functions and the like implemented by the functional units in the router, reference may be made to the description of the method part of FIG. 2, and details are not described herein.

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

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

The functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may also be an independent physical module.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the technical solution of the present invention may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device (which may be a personal computer, A server, or network device, or the like, or a processor, performs all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a Universal Serial Bus flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), and a magnetic A variety of media that can store program code, such as a disc or a disc.

The above embodiments are only used to describe the technical solutions of the present invention in detail, but the description of the above embodiments is only for the purpose of facilitating the understanding of the embodiments of the present invention, and should not be construed as limiting the embodiments of the present invention. Variations or substitutions that may be readily conceived by those skilled in the art are intended to be included within the scope of the present invention.

Claims

A method for acquiring network connection information, which is applied to a new router having the capability of acquiring network connection information of an old router, and includes:

Receiving, by the new router, a data packet by using a local area network LAN interface of the new router, where the data packet includes an Ethernet report sent by the old router to a LAN interface of the new router by using a wide area network WAN interface of the old router. Text

The new router determines the network connection information of the old router according to the data packet.
The method of claim 1 wherein

The network connection information includes one or more of authentication information, a network connection manner, or an internet protocol IP address.
The method of claim 2, wherein the new router determines network connection information of the old router according to the data packet, including:

If the data packet is an Ethernet packet and is a broadcast packet, and the data packet includes a point-to-point protocol PPPoE packet on the Ethernet, the new router determines that the network connection mode of the old router is dialing. verification method;

The new router accepts a PPPoE session initiated by the old router; wherein the new router works in a PPPoE server mode;

In the PPPoE session flow of the new router and the old router, the new router acquires the authentication information of the old router.
The method of claim 2, wherein the new router determines network connection information of the old router according to the data packet, including:

If the data packet is an Ethernet packet and is a broadcast packet, and the data packet includes a dynamic host configuration protocol DHCP broadcast packet, the new router determines that the network connection mode of the old router is dynamic. Assign address method.
The method of claim 2 wherein said new router is based on said data The packet determines the network connection information of the old router, including:

If the data packet is an Ethernet packet and is a non-broadcast packet, and the data packet includes an IP packet, the new router determines whether the source address of the IP packet is legal.

If the source address of the IP packet is valid, the new router determines that the network connection mode of the old router is a static address mode, and the IP address is a source address of the IP packet.
The method of claim 3, further comprising: after obtaining the authentication information of the old router,

The new router switches from the PPPoE Server mode to the PPPoE client client mode;

In the PPPoE client mode, the new router uses the obtained network connection information to perform network connection.
The method of any of claims 1-6, further comprising: after the new router receives the data message through the LAN interface of the new router,

The new router records a source media access control MAC address of the data packet, and sets the source MAC address as a MAC address of a WAN interface of the new router.
A router, characterized in that the router has the capability of acquiring network connection information of an old router, and the router includes:

a local area network LAN interface, configured to receive a data packet, where the data packet includes an Ethernet packet sent by the old router to the LAN interface by using a wide area network WAN interface of the old router;

And a processor, configured to determine, according to the data packet, the network connection information of the old router.
The router according to claim 8, wherein the network connection information comprises one or more of authentication information, a network connection method, or an internet protocol IP address.
The router of claim 9 wherein said processor is operative to:

If the data packet is an Ethernet packet and is a broadcast packet, and the data packet includes a point-to-point protocol PPPoE packet on the Ethernet, determining that the network connection mode of the old router is a dial-up authentication mode;

Accepting a PPPoE session initiated by the old router; wherein the router works in PPPoE Server Server mode;

And obtaining, in the PPPoE session flow of the router and the old router, authentication information of the old router.
The router of claim 9 wherein said processor is operative to:

If the data packet is an Ethernet packet and is a broadcast packet, and the data packet includes a dynamic host configuration protocol (DHCP) broadcast packet, the network connection mode of the old router is determined to be a dynamically allocated address mode.
The router of claim 9 wherein said processor is operative to:

If the data packet is an Ethernet packet and is a non-broadcast packet, and the data packet includes an IP packet, determining whether the source address of the IP packet is legal;

If the source address of the IP packet is valid, the network connection mode of the old router is determined to be a static address mode, and the IP address is a source address of the IP packet.
The router of claim 10, wherein the processor is further configured to:

After acquiring the authentication information of the old router, the router is switched from the PPPoE server mode to the PPPoE client client mode;

In the PPPoE client mode, the obtained network connection information is used for network connection.
The router according to any one of claims 8-13, wherein the processor is further configured to:

After receiving the data packet, the LAN interface records a source media access control MAC address of the data packet, and sets the source MAC address as a MAC address of the WAN interface of the router.
A router, characterized in that the router has the capability of acquiring network connection information of an old router, and the router includes:

a receiving module, configured to receive, by using a LAN interface of the router, a data packet, where the data packet includes an Ethernet packet sent by the old router to a LAN interface of the router by using a WAN interface of the old router;

a processing module, configured to determine, according to the data packet, the network connection of the old router information.
The router according to claim 15, wherein the network connection information comprises one or more of authentication information, a network connection method, or an internet protocol IP address.
The router of claim 16 wherein said processing module is operative to:

If the data packet is an Ethernet packet and is a broadcast packet, and the data packet includes a point-to-point protocol PPPoE packet on the Ethernet, determining that the network connection mode of the old router is a dial-up authentication mode;

Accepting a PPPoE session initiated by the old router; wherein the router works in a PPPoE server mode;

And obtaining, in the PPPoE session flow of the router and the old router, authentication information of the old router.
The router of claim 16 wherein said processing module is operative to:

If the data packet is an Ethernet packet and is a broadcast packet, and the data packet includes a dynamic host configuration protocol (DHCP) broadcast packet, the network connection mode of the old router is determined to be a dynamically allocated address mode.
The router of claim 16 wherein said processing module is operative to:

If the data packet is an Ethernet packet and is a non-broadcast packet, and the data packet includes an IP packet, determining whether the source address of the IP packet is legal;

If the source address of the IP packet is valid, the network connection mode of the old router is determined to be a static address mode, and the IP address is a source address of the IP packet.
The router according to claim 17, wherein the processing module is further configured to:

After acquiring the authentication information of the old router, the router is switched from the PPPoE server mode to the PPPoE client client mode;

In the PPPoE client mode, the obtained network connection information is used for network connection.
The router according to any one of claims 15 to 20, wherein the processing module is further configured to:

After receiving the data packet, the LAN interface records the source media access control of the data packet. The MAC address is set and the source MAC address is set to the MAC address of the router's WAN interface.