CN110855804A - Network access method, wireless terminal access device and downlink device - Google Patents
Network access method, wireless terminal access device and downlink device Download PDFInfo
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- CN110855804A CN110855804A CN201810951425.9A CN201810951425A CN110855804A CN 110855804 A CN110855804 A CN 110855804A CN 201810951425 A CN201810951425 A CN 201810951425A CN 110855804 A CN110855804 A CN 110855804A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/618—Details of network addresses
- H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses
Abstract
The embodiment of the application discloses a network access method, a CPE and a lower connection device, which are used for sending the MAC address of the CPE to the lower connection device according to the ARP learning rule set by the CPE so that the lower connection device can communicate with a WAN device through the MAC address of the CPE. The method in the embodiment of the application comprises the following steps: the method comprises the steps that a CPE receives an ARP request sent by a piece of lower connection equipment, the ARP request is used for requesting a Media Access Control (MAC) address of a gateway, the ARP request comprises an Internet Protocol (IP) address and a gateway IP address of a Wide Area Network (WAN), and the WAN IP address is an IP address set by the lower connection equipment for the lower connection equipment; when the CPE determines that the ARP request contains a WAN IP address and a gateway IP address according to a preset ARP learning rule, the CPE sends an ARP response to the lower connection equipment through the gateway IP address, the ARP response comprises the MAC address of the CPE, and the MAC address of the CPE is used for the lower connection equipment to send service data to equipment of a WAN network.
Description
Technical Field
The present application relates to the field of wireless access communication technologies, and in particular, to a network access method, a wireless terminal access device, and a downlink device.
Background
A terminal access device based on a wireless network, called a wireless terminal access device (CPE), has an access capability of the wireless network, can acquire an Internet Protocol (IP) address from a core network, and must rely on the access device to use the wireless network.
In a single Access Point Name (APN) scenario, based on an IP transparent transmission (IP) mode, a current method for accessing a wireless Wide Area Network (WAN) by a CPE is to acquire a WAN IP address from a core network, calculate a mask and a gateway IP address of the WAN IP address by the CPE through the WAN IP address, configure the calculated mask and gateway IP address to a Local Area Network (LAN) interface of the CPE for use, where the LAN interface is a port where the CPE is connected to a lower connection device, that is, directly use the CPE as a gateway, and communicate with the lower connection device by using the gateway IP address. The lower connection device can be in butt joint with the CPE, and provides devices such as wireless fidelity (WIFI), Internet Protocol Television (IPTV), Voice Over Internet Protocol (VOIP), standard Ethernet interfaces and the like for users.
However, when the lower connection device communicates with a certain device a of the WAN network, if the IP address of the device a is exactly the same as the gateway IP address used by the CPE for communicating with the lower connection device, since the CPE occupies the gateway IP address, the lower connection device cannot transmit the service data to the device a of the WAN network through the gateway IP address but to the CPE, so that the lower connection device cannot normally communicate with the device of the WAN network having the same gateway IP address as the gateway IP address of the CPE.
Disclosure of Invention
The embodiment of the application provides a network access method, wireless terminal access equipment and lower connection equipment, and the MAC address of the CPE can be sent to the lower connection equipment according to the ARP learning rule set by the CPE, so that the lower connection equipment can communicate with the equipment of a WAN (wide area network) through the MAC address of the CPE.
In view of this, a first aspect of the embodiments of the present application provides a network access method, which may include:
in order to enable the lower connection device and the CPE to normally communicate with each device in the WAN, the CPE can firstly obtain a WAN IP address of the WAN from a core network, the CPE calculates a mask code of the WAN IP address and a gateway IP address according to the WAN IP address, then the CPE can set an Address Resolution Protocol (ARP) learning rule, the ARP learning rule is that when the CPE receives an ARP request of the lower connection device, the CPE judges whether the ARP request comprises the WAN IP address and the gateway IP address, if yes, the CPE pretends to be a gateway, MAC address information of the CPE is sent to the lower connection device through the gateway IP address through an ARP response, the ARP request comprises the MAC address of the lower connection device, the WAN IP address and the gateway IP address, the ARP request is used for requesting the MAC address of the gateway, after the ARP learning rule is set, the CPE can receive a dynamic host configuration protocol (dynamic host configuration protocol) sent by the lower connection device, DHCP) request, the DHCP request carries the MAC address of the equipment connected downwards, the CPE records the MAC address of the equipment connected downwards and sets ARP information of the equipment connected downwards on the CPE, the ARP information belongs to static ARP information, the ARP information comprises a WANIP address and the MAC address of the equipment connected downwards, the WAN IP address is the WAN IP address of the WAN network distributed to the CPE by a core network, the equipment connected downwards sets the WAN IP address as the IP address of the equipment connected downwards, the MAC address of the equipment connected downwards is obtained from the DHCP request, then the CPE sends the WAN IP address, the calculated mask and the gateway IP address to the equipment connected downwards for use according to the DHCP request, when the equipment connected downwards sets the WAN IP address as the IP address of the equipment connected downwards, the equipment sets the mask and the gateway IP address of the equipment connected downwards according to the obtained mask and the gateway IP address, then the CPE receives the ARP request sent by the equipment connected downwards, the ARP request comprises the MAC address of the lower connection device, the IP address of the gateway and the IP address of the WAN (namely the IP address of the lower connection device), after the CPE receives the ARP request, the CPE can judge whether the information of the lower connection device in the ARP request is consistent with the information of the lower connection device arranged in the CPE or not according to an ARP learning rule, namely whether the ARP request comprises the IP address of the WAN (namely the IP address of the lower connection device) and the IP address of the gateway or not is judged, if the CPE determines that the lower connection device sending the ARP request is the lower connection device consistent with the ARP information arranged in the CPE, the CPE is disguised as the gateway and sends the MAC address of the CPE to the lower connection device, after the lower connection device receives the MAC address of the CPE, the MAC address of the CPE is considered to be the MAC address of the gateway, the MAC address information of the CPE is learned, the service data is sent to the CPE through the MAC address of the CPE, after the CPE receives the service, the service data is directly forwarded to the server of the equipment of the WAN network, otherwise, when the equipment of the WAN network needs to send the service data to the lower connection equipment, the service data is sent to the CPE through the server of the equipment of the WAN network, and then the CPE is sent to the lower connection equipment through the MAC address of the lower connection equipment recorded in the CPE, so that the lower connection equipment can communicate with the equipment of the WAN network.
According to the technical scheme, the embodiment of the application has the following advantages: according to the ARP learning rule set by the CPE, the CPE can learn and set the IP address (namely WAN IP address) and the gateway IP address of the equipment connected downwards in the CPE, when the equipment connected downwards sends an ARP request to the CPE, the CPE can pretend to be a gateway after determining whether the WAN IP address and the gateway IP address are contained in the ARP request, the MAC address of the CPE is sent to the equipment connected downwards, then the equipment connected downwards considers that the received MAC address of the CPE is the MAC address of the gateway, then the MAC address of the CPE is learned, the service data is sent to the CPE through the MAC address of the CPE, the CPE is forwarded to the equipment of the WAN network, and therefore the equipment connected downwards can communicate with the equipment of the WAN network through the MAC address of the CPE, and the phenomenon that the equipment connected downwards cannot normally communicate with the equipment of the WAN network with the same IP address as the gateway IP address due to occupation of the gateway IP address of the CPE does not occur, therefore, the success rate of the intercommunication between the lower connection device and the WAN network device is improved.
Optionally, in some embodiments of the present application, the ARP learning rule may include that, when the CPE receives the ARP request of the downstream device, the CPE may determine whether a source IP address in the ARP request is a WAN IP address and a destination IP address is a gateway IP address;
if the source IP address in the ARP request is the WAN IP address in the ARP information set in the CPE, since the downstream device sets the WAN IP address as the IP address of the downstream device itself, the CPE may determine that the downstream device that sent the ARP request is the downstream device marked in the ARP information of the CPE, and then the CPE may send the MAC address of the CPE to the downstream device through the gateway IP address, so that the downstream device may send the traffic data to the CPE using the MAC address of the CPE, and then the CPE forwards the traffic data to the device of the WAN network.
In the embodiment of the application, a specific implementation scheme for judging whether the information of the lower connection device in the ARP request conforms to the information of the lower connection device in the ARP information set in the CPE is provided, so that a more specific implementation mode is provided for the ARP rule where the key is located in the embodiment of the application, and the realizability of the scheme is further improved.
Optionally, in some embodiments of the present application, when the CPE determines that the ARP request includes a WAN IP address and a gateway IP address according to a preset ARP learning rule, the sending, by the CPE, an ARP response to the downstream device includes:
the CPE may determine, according to a preset ARP learning rule, whether the source IP address in the ARP request is the WAN IP address in the ARP information, and whether the destination IP address is the gateway IP address;
if the source IP address in the ARP request is the WAN IP address set in the CPE which is set as the IP address of the downstream device, the CPE can determine that the downstream device sending the ARP request is the downstream device marked in the ARP information of the CPE, and then the CPE can send the MAC address of the CPE to the downstream device through the gateway IP address, so that the downstream device can send the traffic data to the CPE using the MAC address of the CPE, and then the CPE forwards the traffic data to the devices of the WAN network.
In the embodiment of the application, the CPE can realize the mutual learning of the information between the CPE and the connected equipment according to the more specific ARP rule, so the realizability of the scheme is further improved.
Optionally, in some embodiments of the present application, after the CPE sends the ARP response to the downstream device through the gateway IP address, the method may further include:
the CPE receives the service data sent by the lower connection device through the MAC address of the CPE and forwards the received service data to the server of the device of the WAN network, whereas when the CPE receives the service data sent by the device of the WAN network, the CPE forwards the service data sent by the device of the WAN network to the lower connection device through the MAC address of the lower connection device.
In the embodiment of the application, the lower connection device can send the service data to the WAN network device through the MAC address of the CPE, so that the problem that the lower connection device cannot normally communicate with the WAN network device when the IP address of the lower connection device is the same as the WAN IP address of the WAN network device is solved, the lower connection device can smoothly communicate with each device of the WAN network only through the MAC address of the CPE, meanwhile, the WAN network can also forward the data to the lower connection device through the CPE, a more specific scheme for realizing the communication between the lower connection device and the WAN network device through the CPE is provided, and the practicability of the scheme is further improved.
A second aspect of the embodiments of the present application provides a network access method, which may include: when the downlink device needs to send service data to the WAN network device, it may first send an ARP request to the CPE, requesting to obtain the gateway MAC address, the ARP request contains the IP address of the downstream device (i.e. the WAN IP address that the CPE sent to the downstream device) and the gateway IP address, when the CPE receives the request of connecting the equipment down, the judgment can be carried out according to the preset ARP learning rule, if the source IP address contained in the ARP request sent by the downstream device is the same as the WAN IP address and the destination IP address is the same as the gateway IP address, the downstream device may receive the ARP response sent by the CPE, in the message of ARP response, the CPE fills the MAC address of the CPE into the message of ARP response, so that the lower-connection equipment considers the MAC address of the CPE as the MAC address of the gateway, when sending the service data, the service data is sent to the CPE through the MAC address of the CPE, and then the CPE can forward the service data to the equipment of the WAN network.
In the embodiment of the application, the lower connection equipment uses the MAC address of the CPE to send the service data, so that the service data can be smoothly forwarded to the equipment of the WAN network through the CPE, the problem that the lower connection equipment cannot normally communicate with the equipment of the WAN network with the IP address same as the IP address of the gateway due to the fact that the CPE occupies the IP address of the gateway is solved, and the success rate of mutual communication between the lower connection equipment and the equipment of the WAN network is improved.
Optionally, in some embodiments of the present application, the receiving, by the downstream device, the ARP response sent by the CPE may include: the drop device may receive the ARP response sent by the CPE via a gateway IP address.
In the embodiment of the application, a specific mode that the equipment connected downwards receives the ARP response sent by the CPE is provided, so that the realizability of the scheme is improved.
A third aspect of the embodiments of the present application provides a wireless terminal access device CPE, where the wireless terminal access device has a function of implementing the method in any one of the above first aspect and possible designs of the first aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
A fourth aspect of embodiments of the present application provides a lower connection device having a function of implementing the method in any one of the possible designs of the second aspect and the second aspect described above. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
A fifth aspect of embodiments of the present application provides a computer storage medium for storing computer software instructions for a CPE, which includes a program designed for executing the CPE, of the wireless terminal access device of the first aspect.
A sixth aspect of embodiments of the present application provides a computer storage medium for storing computer software instructions for the docking device of the second aspect described above, including a program for executing the program designed for the docking device.
A seventh aspect of the embodiments of the present application provides a computer program product, where the computer program product includes computer software instructions, and the computer software instructions may be loaded by a processor to implement the method flow in the first aspect.
An eighth aspect of the present embodiment provides a computer program product, where the computer program product includes computer software instructions, and the computer software instructions can be loaded by a processor to implement the method flow in the second aspect.
Drawings
FIG. 1 is a diagram of a system architecture to which embodiments of the present application are applied;
fig. 2 is a schematic diagram of an embodiment of a network access method in an embodiment of the present application;
fig. 3 is a schematic diagram of another embodiment of a network access method in the embodiment of the present application;
fig. 4 is a schematic diagram of an embodiment of a wireless terminal access device in an embodiment of the present application;
fig. 5 is a schematic diagram of another embodiment of a wireless terminal access device in the embodiment of the present application;
FIG. 6 is a schematic diagram of an embodiment of a docking device in an embodiment of the present application;
fig. 7 is a schematic diagram of another embodiment of the lower connecting device in the embodiment of the present application.
Detailed Description
The embodiment of the application provides a network access method and wireless terminal access equipment, which can send the MAC address of CPE to the lower connection equipment according to the ARP learning rule set by the CPE, so that the lower connection equipment can communicate with the WAN equipment through the MAC address of the CPE.
For a person skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. The embodiments in the present application shall fall within the protection scope of the present application.
Referring to fig. 1, in the implementation of network access, there is required participation of a connection device 101, an access device 102, and a device 103 of a WAN network.
It should be noted that the lower connection device 101 in this embodiment of the application may be a router, an indoor CPE device, and an Augmented Reality (AR) device, and is not limited herein specifically; the access device 102 in the embodiment of the present application may be a wireless CPE; the number of the devices 103 of the WAN network may be one or more, and is not limited herein.
Based on the above system framework, the following describes the embodiments of the present application in detail.
First, in an application scenario of the present application, an access device is a CPE serving as a wireless access device, the CPE serves as a wireless access device, and an operating mode of the CPE is divided into an IP transparent mode and a routing mode, and a network access mode includes a single APN, a 2APN, a 3APN, and the like. The single APN scene is that the core network only allocates one WAN IP address to the downlink device, and the IP transparent transmission mode refers to that the access device sends the WAN IP address allocated by the core network to the downlink device in the IP transparent transmission mode. The uplink data in the IP transparent transmission mode is that the CPE transparently transmits the service data transmitted from the device of the lower connection network to the device of the WAN network, and the downlink data is that the CPE forwards the service data transmitted from the device of the WAN network to the device of the lower connection network.
Referring to fig. 2, fig. 2 is a schematic diagram illustrating a network access method according to an embodiment of the present application. An embodiment of a network access method in the embodiment of the present application includes:
201. the CPE acquires a WAN IP address of a WAN network from a core network;
in this embodiment, in order to implement normal communication between the connected device and each device of the WAN network, the core network may allocate a WAN IP address of the WAN network to the CPE, and the CPE may first access a wireless network Long Term Evolution (LTE) base station by inserting a Subscriber Identity Module (SIM) card, and then obtain the WAN IP address from the core network. Due to the application scenario of a single APN, the core network will only assign one WAN IP address to the CPE.
202. The CPE calculates a mask of the WAN IP address and a gateway IP address according to the WAN IP address;
after the CPE acquires the WAN IP address, a mask of the WAN IP address and a gateway IP address may be calculated according to the WAN IP address.
The mask may be calculated by recording the value of bit "0", i.e. bit [0], of WAN IP, and reading the value of each bit of WANIP in turn until the value of a bit [ x ] is not equal to "0", and the mask host bit is 0-x. As a more specific example of the mask calculation method, assuming that the WAN IP acquired from the core network is 10.10.19.16, the WAN IP is converted into a 16-system integer of 0x0a0a1310, the WAN IP is converted into a binary system of 1010000010100001001100010000, and bits 0 to 31 are sequentially from right to left, so that it can be clearly seen that bit0 and bit4 are not consistent, then 0 to 4 are host bits, and thus the mask is 11111111111111111111111111100000, and the WAN IP is converted into a 16-system integer of 0 xfffffe 0, that is 255.255.255.224.
The calculation method of the gateway IP address can be that after the WAN IP is masked with the calculated mask, 1 is added, if the address is not equal to the WAN IP, the address is the gateway IP, otherwise, the address added with 1 is used as the gateway address. To take a more specific example of a gateway calculation method, according to the WAN IP (10.10.19.16) and the calculated mask (255.255.255.224) described above, the WAN IP is masked with the mask: that is, do & operation (1 if each bit is determined to be 1, otherwise 0), the masked value is 1010000010100001001100000000, convert it to 0x0a0a1300 in 16-ary system, and 0x0a0a1301 is obtained after executing +1 operation, that is, 10.10.19.1.
It should be noted that the mask needs to be calculated because the downstream device needs to use the mask to perform setting when setting the WAN IP address as its own IP address.
203. CPE sets ARP learning rule;
the CPE can set an ARP learning rule after calculating the mask code and the gateway IP address of the WAN IP address, wherein the ARP learning rule is that when the CPE receives an ARP request of the lower-connection equipment, the CPE judges whether the ARP request contains the WAN IP address and the gateway IP address, and the reason why the CPE needs to judge whether the WAN IP exists is that if the CPE determines that the ARP request contains the WAN IP address, the CPE can determine the IP address of the lower-connection equipment, because the lower-connection equipment sets the WAN IP address as the IP address of the CPE; the reason why the CPE needs to determine whether there is a gateway IP is that, if the CPE determines that the ARP request includes the gateway IP address, the CPE sends the MAC address of the CPE to the downstream device through the gateway IP address in the subsequent step, and if the CPE can determine that the ARP request includes the WAN IP address and the gateway IP address, the CPE sends the MAC address of the CPE to the downstream device through the gateway IP address by an ARP response, and the ARP request includes the MAC address of the downstream device, the WAN IP address, and the gateway IP address. The ARP request sent by the downstream device is used to request the MAC address of the gateway.
Further, in the ARP learning rule set by the CPE, after receiving the ARP request sent by the downstream device, the CPE determines whether the WAN IP address and the gateway IP address in the ARP request match the WAN IP address and the gateway IP address in the ARP information of the downstream device set in the CPE, and if so, the CPE sends the MAC address of the CPE to the downstream device through the gateway IP address.
204. The lower connection equipment sends a DHCP request to the CPE;
after the CPE sets the ARP learning rule on the CPE, the lower connection device may send a DHCP request to the CPE, where the DHCP request carries an MAC address of the lower connection device, and the DHCP request is used to request a WAN IP address, a mask of the WAN IP address, and a gateway IP address from the CPE.
205. The CPE sets ARP information of the lower-connection equipment on the CPE;
after acquiring the WAN IP address and receiving the DHCP request sent by the downstream device, the CPE may set ARP information on the CPE, where the ARP information belongs to information of the downstream device. The CPE may set the MAC address of the downstream device in the DHCP request in the ARP information, so that a message subsequently sent from the device of the WAN network to the CPE is forwarded to the downstream device through the MAC address of the downstream device. In addition, the CPE may set a WAN IP address, which may be set as an IP address of the downlinked device itself by the downlinked device in a subsequent operation step, in the ARP information. The ARP information belongs to static ARP information. The purpose of the CPE setting the ARP information of the downstream device is to prepare the step of determining whether the information of the downstream device that sends the ARP request matches the information of the downstream device set in the CPE in the subsequent determination.
206. The CPE sends the WAN IP address, the mask code and the gateway IP address to the lower-connection equipment for use according to the DHCP request;
the CPE records the MAC address of the down-connection equipment on the CPE, and after the ARP information of the down-connection equipment is set, the WAN IP address, the mask and the gateway IP address can be sent to the down-connection equipment for use according to the DHCP request. The lower connection device can set the WAN IP address as the IP address of the lower connection device after receiving the WAN IP address, when the WAN IP address is set as the WAN IP address of the lower connection device, the lower connection device needs to use the received mask code for setting, and the gateway IP address received by the lower connection device is used for sending the MAC address of the lower connection device to the CPE.
207. The lower connection equipment sends an ARP request to the CPE;
when the down-connection equipment needs to send data to the equipment of the WAN network, an ARP request is sent to the CPE first, and the CPE is requested to send the MAC address of the gateway to the down-connection equipment. The ARP request message includes an active MAC address, a source IP address, a destination IP address, and a destination MAC address. The source MAC address, the source IP address and the destination IP address are all filled with corresponding address information, the source MAC address is filled with the MAC address information of the lower connection equipment, the source IP address is filled with WAN IP address information, the destination IP address is filled with gateway IP address information, the destination MAC address is empty, and the lower connection equipment sends the ARP request, namely, the CPE is requested to send the MAC address of the gateway to the lower connection equipment.
208. When the CPE determines that the ARP request contains a WAN IP address and a gateway IP address according to a preset ARP learning rule, the CPE sends an ARP response to the downlink equipment;
after receiving an ARP request sent by a downstream device, a CPE can judge whether the ARP request contains a WAN IP address and a gateway IP address according to an ARP learning rule, if the CPE determines that the ARP request contains a WAN IP address (the WAN IP address is set as the IP address of the downstream device) and the gateway IP address, the CPE sends an ARP response to the downstream device, the ARP response comprises the MAC address of the CPE, and the MAC address of the CPE is used for the downstream device to send service data to the equipment of the WAN network.
It should be noted that the devices of the WAN network include an IP Multimedia Subsystem (IMS), a Domain Name System (DNS) server, a Session Initiation Protocol (SIP) server, a hundredth server, and a wechat server.
Further, after receiving the ARP request sent by the downstream device, the CPE may determine, according to the ARP learning rule, whether the WAN IP address and the gateway IP address in the ARP request match with the WANIP address (used as the IP address of the downstream device) and the gateway IP address in the ARP information of the downstream device set in the CPE, and if so, the CPE sends the MAC address of the CPE to the downstream device through the gateway IP address by an ARP response, so that the downstream device may forward the service data to the device of the WAN network using the MAC address of the CPE, thereby implementing the communication between the downstream device and the device of the WAN network.
In the embodiment of the application, the CPE sets an ARP learning rule, a WAN IP address distributed by a core network and a calculated gateway IP address are set as ARP information of the lower connection device on the CPE, the WAN IP address, the gateway IP address and a mask are sent to the lower connection device through a DHCP request sent by the lower connection device, the lower connection device sets the WAN IP address as the WAN IP address of the lower connection device and sets the gateway IP address as the gateway IP address of the lower connection device through the mask, when the CPE receives the ARP request of the lower connection device, the CPE judges whether the ARP information of the lower connection device set in the CPE is matched with the WAN IP and the gateway IP information in the ARP request or not according to the set ARP learning rule, if yes, the CPE sends the MAC address of the CPE to the lower connection device through the gateway IP address, so that the lower connection device sends service data to the CPE through the MAC address of the CPE, the CPE does not process the service data and sends the service data to the equipment of the WAN network, therefore, the method can be used for forwarding the service data to the equipment of the WAN network through the MAC address of the CPE by the lower connection equipment, so that the problem that the lower connection equipment cannot normally communicate with the equipment of the WAN network with the IP address same as the IP address of the gateway due to the fact that the CPE occupies the IP address of the gateway is solved, and the success rate of the mutual communication between the lower connection equipment and the equipment of the WAN network is improved.
Further, the following scenario in which the device sends traffic data to the devices of the WAN network via the CPE is taken as an example to describe the embodiment in fig. 3.
Referring to fig. 3, fig. 3 is a schematic diagram of another embodiment of a network access method in the embodiment of the present application. It should be noted that steps 301 to 308 in the embodiment shown in fig. 3 are similar to steps 201 to 208 in the embodiment shown in fig. 2, and detailed description thereof is omitted here.
Another embodiment of the network access method in the embodiment of the present application includes:
301. the CPE acquires a WAN IP address of a WAN network from a core network;
302. the CPE calculates a mask of the WAN IP address and a gateway IP address according to the WAN IP address;
303. CPE sets ARP learning rule;
304. the lower connection equipment sends a DHCP request to the CPE;
305. the CPE sets ARP information of the lower-connection equipment on the CPE;
306. the CPE sends the WAN IP address, the mask code and the gateway IP address to the lower-connection equipment for use according to the DHCP request;
307. the lower connection equipment sends an ARP request to the CPE;
308. when the CPE determines that the ARP request contains a WAN IP address and a gateway IP address according to the ARP learning rule, the CPE sends an ARP response to the downlink equipment;
309. the lower connection equipment sends service data to CPE;
in this embodiment, after receiving the MAC address of the CPE, the downstream device may misunderstand that the MAC address of the CPE is the MAC address of the gateway, and then the downstream device may send the service data to the CPE through the MAC address of the CPE.
Specifically, the MAC address of the CPE is set in the ARP response message, and at the location of the destination MAC address in the message, the CPE is not filled with any data before filling with data, and after receiving the ARP request, the CPE can fill the MAC address of the CPE into the location of the destination MAC address, and then sends the MAC address to the lower connection device through the message, and the lower connection device can know the MAC address of the CPE through the message, but the lower connection device actually wants to be the gateway MAC address, so the lower connection device may mistakenly consider that the MAC address of the CPE filled in the destination MAC address is the gateway MAC address, and then the lower connection device tries to send the service data to the CPE through the MAC address of the CPE.
310. The CPE sends service data to equipment of the WAN network;
after receiving the service data sent by the lower connection device, the CPE does not perform any processing on the service data, but forwards the service data to the WAN network device, and the WAN network device processes the service data. In this way, the downstream device can forward the traffic data to the devices of the WAN network via the CPE.
311. The equipment of the WAN network sends service data to the CPE;
in this embodiment, the device of the WAN network may also send service data to the downlink device.
312. And the CPE sends the service data to the downlink equipment.
After receiving the message sent by the downlink device, the CPE can send the service data to the downlink device through the MAC address of the downlink device recorded in the CPE.
In this embodiment, when the lower connection device sends the ARP request to the CPE, according to an ARP learning rule preset in the CPE, when determining that the lower connection device information for sending the ARP request, that is, the WAN IP address filled in the source IP address and the gateway IP address filled in the destination IP address in the message of the ARP request, are the same as the ARP information (that is, the WAN IP address and the gateway IP address) set in the CPE, the CPE may pretend to be a gateway, send the MAC address of the CPE itself to the lower connection device, the lower connection device sends the service data to the CPE through the MAC address of the CPE, and then the CPE forwards the service data to the device of the WAN network, or vice versa, the device of the WAN network may also forward the message to the lower connection device through the CPE, and thus, by the above method, the lower connection device may forward the service data to the device of the WAN network through the MAC address of the CPE, thereby overcoming the problem that the CPE occupies the gateway IP address, which causes the lower connection device to be unable to be able to be the WAN having The equipment of the network carries out normal communication, thereby improving the success rate of the intercommunication between the lower connection equipment and the equipment of the WAN network.
With reference to fig. 4, fig. 4 is a schematic diagram illustrating an embodiment of a CPE according to an embodiment of the present application.
One embodiment of the CPE in the embodiments of the present application includes:
a first receiving unit 401, configured to receive an ARP request sent by a downstream device, where the ARP request is used to request a media access control MAC address of a gateway, the ARP request includes an internet protocol IP address and a gateway IP address of a wide area network WAN, and the WAN IP address is an IP address set by the downstream device for the downstream device;
a first sending unit 402, configured to send an ARP response to the downstream device through the gateway IP address when the determining unit 403 determines that the ARP request includes the WAN IP address and the gateway IP address according to a preset ARP learning rule, where the ARP response includes a MAC address of the CPE, and the MAC address of the CPE is used for the downstream device to send service data to a device of the WAN network.
In this embodiment, the ARP learning rule includes that, when the first receiving unit 401 receives an ARP request of a downstream device, if the determining unit 403 determines that a source IP address in the ARP request is a WAN IP address and a destination IP address is a gateway IP address, the first sending unit 402 sends an ARP response to the downstream device.
In this embodiment, the first sending unit 402 is specifically configured to, when the CPE determines, according to a preset ARP learning rule, that a source IP address in the ARP request is a WAN IP address in the ARP information, and a destination IP address is a gateway IP address, send an ARP response to the downstream device.
In this embodiment, the CPE further includes:
a second receiving unit 404, configured to receive service data sent by the downlink device;
a second sending unit 405, configured to send service data to a device of the WAN network.
In this embodiment, after receiving the ARP request sent by the lower device, the first receiving unit 401, when determining that the ARP request includes a WAN IP address and a gateway IP address according to a preset ARP learning rule, sends an ARP response to the lower device by the first sending unit 402, where the ARP response includes a MAC address of a CPE, but the ARP request actually wants to request the MAC address of the gateway, and therefore, when the lower device receives the MAC address of the CPE, the lower device may misunderstand that the MAC address of the CPE is the MAC address of the gateway, and then the second receiving unit 404 may receive the service data sent by the lower device through the MAC address of the CPE, and send the service data to the device of the WAN network by the second sending unit 405, thereby increasing a success rate of the communication between the lower device and the device of the WAN network through the MAC address of the CPE.
One embodiment of the CPE in the present application is described above, and another embodiment of the CPE in the present application is described below. Referring to fig. 5, fig. 5 is a schematic diagram of another embodiment of a CPE according to the embodiments of the present application.
One embodiment of the CPE in the embodiments of the present application includes:
the CPE500 may have relatively large differences due to configuration or performance differences and may include one or more Central Processing Units (CPUs) 501 (e.g., one or more processors) and a memory 505, where one or more applications or data are stored in the memory 505.
The CPE500 may also include one or more power supplies 502, one or more wired or wireless network interfaces 503, one or more transceivers 504, and/or one or more operating systems, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, and the like.
The process executed by the central processing unit 501 in the CPE500 in this embodiment is similar to the method process described in the embodiments shown in fig. 2 and fig. 3, and is not described again here.
Embodiments of the present application also provide a computer storage medium for storing computer software instructions for the CPE, which includes a program designed for executing the CPE.
The present application also provides a computer program product, which includes computer software instructions that can be loaded by a processor to implement the method flows in the foregoing embodiments shown in fig. 2 and fig. 3.
The embodiments of the present application are described above from the CPE side, and described below from the lower-connection device side. Referring to fig. 6, fig. 6 is a schematic diagram of an embodiment of a lower connection device in the embodiment of the present application.
One embodiment of the lower interface device in the embodiments of the present application includes:
a first sending unit 601, configured to send an ARP request to a CPE, where the ARP request is used to request a media access control MAC address of a gateway, the ARP request includes an internet IP address and a gateway IP address of a wide area network WAN, and the WAN IP address is an IP address set by the downstream device for the downstream device itself;
a receiving unit 602, configured to receive, through a gateway IP address, an ARP response sent by a CPE, where the ARP response includes a CPEMAC address;
a second sending unit 603, configured to send the service data to the CPE through the CPE MAC address.
In this embodiment, the receiving unit 602 is specifically configured to receive a large ARP response sent by the CPE through the gateway IP address.
In this embodiment, the first sending unit 601 sends an ARP request to the CPE to request a gateway MAC address, and then the receiving unit 602 can receive an ARP response sent by the CPE, where the ARP response includes the MAC address of the CPE, and the second sending unit 603 sends service data to the CPE through the MAC address of the CPE, so that the lower connection device can smoothly forward the service data to the device of the WAN network through the CPE, thereby overcoming a problem that the lower connection device cannot normally communicate with the device of the WAN network having an IP address identical to the gateway IP address due to the fact that the CPE occupies the gateway IP address, and thus improving a success rate of the mutual communication between the lower connection device and the device of the WAN network.
The above describes one embodiment of the lower connection device in the embodiment of the present application, and the following describes another embodiment of the lower connection device in the embodiment of the present application. Referring to fig. 7, fig. 7 is a schematic diagram of another embodiment of a lower connection device in the embodiment of the present application.
The interface device 700 may have a relatively large difference due to different configurations or performances, and may include one or more Central Processing Units (CPUs) 701 (e.g., one or more processors) and a memory 705, where the memory 705 stores one or more applications or data.
The memory 705 may be volatile storage or persistent storage, among others. The program stored in the memory 705 may include one or more modules, each of which may include a sequence of instructions operating on a server. Still further, the central processor 701 may be configured to communicate with the memory 705 and to execute a sequence of instruction operations in the memory 705 on the lower device 700.
The docking apparatus 700 may also include one or more power supplies 702, one or more wired or wireless network interfaces 703, one or more transceivers 704, and/or one or more operating systems, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, and so forth.
The process executed by the central processing unit 701 in the lower-layer device 700 in this embodiment is similar to the method process described in the embodiments shown in fig. 2 and fig. 3, and is not repeated here.
Embodiments of the present application further provide a computer storage medium for storing computer software instructions for the aforementioned access device, which includes a program designed for executing the access device.
The present application also provides a computer program product, which includes computer software instructions that can be loaded by a processor to implement the method flows in the foregoing embodiments shown in fig. 2 and fig. 3.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Claims (14)
1. A network access method, comprising:
the method comprises the steps that a wireless terminal access device (CPE) receives an ARP (address resolution protocol) request sent by a lower connection device, wherein the ARP request is used for requesting a Media Access Control (MAC) address of a gateway, the ARP request comprises an Internet Protocol (IP) address and a gateway IP address of a Wide Area Network (WAN), and the WAN IP address is an IP address set by the lower connection device for the lower connection device;
when the CPE determines that the ARP request contains a WAN IP address and a gateway IP address according to a preset ARP learning rule, the CPE sends an ARP response to the lower connection equipment through the gateway IP address, the ARP response comprises the MAC address of the CPE, and the MAC address of the CPE is used for the lower connection equipment to send service data to equipment of a WAN network.
2. The method of claim 1, wherein the ARP learning rule comprises, when the CPE receives the ARP request from the downstream device, the CPE sending the ARP response to the downstream device if the CPE determines that a source IP address in the ARP request is a WAN IP address and a destination IP address is a gateway IP address.
3. The method according to claim 2, wherein when the CPE determines that the ARP request includes a WAN IP address and a gateway IP address according to a preset ARP learning rule, the sending, by the CPE, an ARP response to the downstream device includes:
and when the CPE determines that the source IP address in the ARP request is the WAN IP address in the ARP information and the destination IP address is the gateway IP address according to the preset ARP learning rule, the CPE sends an ARP response to the lower-connection equipment.
4. The method according to any one of claims 1 to 3, wherein after the CPE sending the ARP response to the downstream device over the gateway IP address, the method further comprises:
the CPE receives the service data sent by the lower connection equipment;
and the CPE sends the service data to the equipment of the WAN network.
5. A network access method, comprising:
the method comprises the following steps that a lower connection device sends an Address Resolution Protocol (ARP) request to a wireless terminal access device (CPE), wherein the ARP request is used for requesting a Media Access Control (MAC) address of a gateway, the ARP request comprises an internet Internet IP address and a gateway IP address of a Wide Area Network (WAN), and the WAN IP address is an IP address set by the lower connection device for the lower connection device;
the lower connection equipment receives an ARP response sent by the CPE through the gateway IP address, wherein the ARP response comprises the MAC address of the CPE;
and the downlink equipment sends service data to the CPE through the CPE MAC address.
6. A wireless terminal access device, CPE, comprising:
a processor, a memory, a transceiver, and a bus;
the processor, the memory and the transceiver are respectively connected with the bus;
the transceiver is used for receiving an ARP (address resolution protocol) request sent by a lower connection device, the ARP request is used for requesting a Media Access Control (MAC) address of a gateway, the ARP request comprises an Internet Protocol (IP) address and a gateway IP address of a Wide Area Network (WAN), and the WAN IP address is an IP address set by the lower connection device for the lower connection device;
the processor is used for sending an ARP response to the lower connection equipment through the gateway IP address when the ARP request is determined to contain the WAN IP address and the gateway IP address according to a preset ARP learning rule, wherein the ARP response comprises the MAC address of the CPE, and the MAC address of the CPE is used for sending service data to the equipment of the WAN network by the lower connection equipment.
7. The wireless terminal access device of claim 6, wherein the ARP learning rule comprises, when the transceiver receives an ARP request for a downstream device, the transceiver sending the ARP response to the downstream device if the processor determines that a source IP address in the ARP request is a WAN IP address and a destination IP address is a gateway IP address.
8. The device of claim 7, wherein the processor is specifically configured to send an ARP response to the downstream device when the source IP address in the ARP request is determined to be the WANIP address in the ARP information and the destination IP address is the gateway IP address according to the preset ARP learning rule.
9. The wireless terminal access device of any of claims 6-8, wherein the transceiver is further configured to receive traffic data transmitted by the drop device; and sending the service data to the equipment of the WAN network.
10. A lower interconnect device, comprising:
a processor, a memory, a transceiver, and a bus;
the processor, the memory and the transceiver are respectively connected with the bus;
the transceiver sends an ARP (Address resolution protocol) request to a CPE (customer premises equipment), wherein the ARP request is used for requesting a Media Access Control (MAC) address of a gateway, the ARP request comprises an Internet IP address and a gateway IP address of a Wide Area Network (WAN), and the WAN IP address is an IP address set by the lower connection equipment for the lower connection equipment; receiving an ARP response sent by the CPE through the gateway IP address, wherein the ARP response comprises an MAC address of the CPE; and sending service data to the CPE through the CPEMAC address.
11. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 4.
12. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1 to 4.
13. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of claim 5.
14. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of claim 5.
Priority Applications (2)
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| CN201810951425.9A CN110855804A (en) | 2018-08-20 | 2018-08-20 | Network access method, wireless terminal access device and downlink device |
| PCT/CN2019/101350 WO2020038325A1 (en) | 2018-08-20 | 2019-08-19 | Network access method, wireless customer premise equipment, and access device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810951425.9A CN110855804A (en) | 2018-08-20 | 2018-08-20 | Network access method, wireless terminal access device and downlink device |
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| CN112261165B (en) * | 2020-09-10 | 2023-05-05 | 深圳市广和通无线股份有限公司 | Communication method, system, device, computer equipment and storage medium |
| CN112714027B (en) * | 2021-01-26 | 2022-08-02 | 浙江简捷物联科技有限公司 | Method and system for accessing terminal equipment of Internet of things to gateway |
| CN113132993B (en) * | 2021-04-23 | 2023-03-24 | 杭州网银互联科技股份有限公司 | Data stealing identification system applied to wireless local area network and use method thereof |
| CN114285522B (en) * | 2021-12-23 | 2024-04-30 | 中国电信股份有限公司 | Access control method, system and medium for local service area |
| CN115150363A (en) * | 2022-06-27 | 2022-10-04 | 中兴通讯股份有限公司 | IP address updating method, gateway device, gateway drop device and storage medium |
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