CN108667672A - A kind of automatic adaptation method and router of LAN interface and wan interface - Google Patents
A kind of automatic adaptation method and router of LAN interface and wan interface Download PDFInfo
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- CN108667672A CN108667672A CN201810606986.5A CN201810606986A CN108667672A CN 108667672 A CN108667672 A CN 108667672A CN 201810606986 A CN201810606986 A CN 201810606986A CN 108667672 A CN108667672 A CN 108667672A
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- interface
- physical network
- network interface
- pppoe
- router
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
- H04L41/0816—Configuration setting characterised by the conditions triggering a change of settings the condition being an adaptation, e.g. in response to network events
Abstract
The present invention provides the automatic adaptation method and router of a kind of LAN interface and wan interface, method includes：Whether the connection status for monitoring the physical network interface of router changes；If the connection status of the physical network interface changes, according to the IP configuration modes of wan interface and the connection client information of the physical network interface, the LAN interface and wan interface of the router are identified；It is that the LAN interface and the wan interface are configured to call configurator.The present invention can be wan interface or LAN interface with what is connected on automatic identification physical network interface, by configuring accordingly, it is ensured that user can normally surf the Internet.
Description
Technical field
The present invention relates to router field, the automatic adaptation method and router of espespecially a kind of LAN interface and wan interface.
Background technology
With the arrival of the Internet of things era, network has become the essential part of people's life, is using network
When, people often use router.Router can provide multiple network interfaces, and can provide wireless network, very
Ground is convenient.
Router interface wiring currently on the market is divided into Wan interfaces and Lan interfaces.Wan interface must connect WAN dialing nets
Line, LAN interface must connect using equipment.Before using router, need correctly to connect wan interface and LAN interface, wrong is then
It can lead to not normally surf the Internet.And for many ordinary users, their concepts completely without LAN interface and wan interface, even
During connecing cable, it is more likely that cause to perplex to user, influence the normal use of router.
To solve the above-mentioned problems, the present invention provides the automatic adaptation methods and routing of a kind of LAN interface and wan interface
Device.
Invention content
The object of the present invention is to provide the automatic adaptation methods and router of a kind of LAN interface and wan interface, can be automatic
What is connected on identification physical network interface is wan interface or LAN interface, by being configured accordingly, it is ensured that user can
Normal online.
Technical solution provided by the invention is as follows：
The present invention provides the automatic adaptation methods of a kind of LAN interface and wan interface, including step：Monitor router
Whether the connection status of physical network interface changes；If the connection status of the physical network interface changes, root
According to the IP configuration modes of wan interface and the connection client information of the physical network interface, the LAN of the router is identified
Interface and wan interface；It is that the LAN interface and the wan interface are configured to call configurator.
Preferably, according to the IP configuration modes of wan interface and the connection client information of the physical network interface, identification
Go out the LAN interface and wan interface of the router, this step specifically includes：If the IP configuration modes of wan interface are matched for static IP
Mode is set, then whether detects the connecting pin of the physical network interface of the router with the presence of gateway；If the physical network connects
The connecting pin of mouth is with the presence of gateway, then using the physical network interface as wan interface, otherwise, by the physical network interface
As LAN interface.
Preferably, according to the IP configuration modes of wan interface and the connection client information of the physical network interface, identification
Go out the LAN interface and wan interface of the router, this step further includes specifically：If the IP configuration modes of wan interface are dynamic IP
Configuration mode, then according to PPPOE agreements, the connecting pin for detecting the physical network interface of the router takes with the presence or absence of PPPOE
It is engaged in device, and whether the physical network interface with PPPOE servers establishes PPPOE sessions；If the physical network of the router
There are PPPOE servers for the connecting pin of interface, and the physical network interface establishes PPPOE sessions with PPPOE servers, then will
The physical network interface is as wan interface, otherwise, using the physical network interface as LAN interface；
And/or；
If the IP configuration modes of the wan interface selected are dynamic IP configuration mode, according to DHCP protocol, the road is detected
By device physical network interface connecting pin whether there is Dynamic Host Configuration Protocol server, and the physical network interface whether with DHCP service
Device establishes DHCP sessions；If the connecting pin of the physical network interface of the router is there are Dynamic Host Configuration Protocol server, and the Physical Network
Network interface establishes DHCP sessions with Dynamic Host Configuration Protocol server, then using the physical network interface as wan interface, otherwise, by the object
Network interface is managed as LAN interface.
Preferably, according to PPPOE agreements, the connecting pin for detecting the physical network interface of the router whether there is
PPPOE servers, and whether the physical network interface with PPPOE servers establishes PPPOE sessions, this step specifically includes：
According to PPPOE agreements, PPPOE servers are broadcasted to connecting pin by the physical network interface of the router and inquire data packet；
If there are service available at least one PPPOE servers for the connecting pin, replied according at least one PPPOE servers
PPPOE server response data packets, select one of PPPOE servers as target PPPOE servers, to the target
PPPOE servers send PPPOE session request data packets；If the target PPPOE servers, which reply PPPOE sessions, confirms data
Packet then confirms that data packet establishes PPPOE sessions with PPPOE servers according to the PPPOE sessions.
Preferably, according to DHCP protocol, the connecting pin for detecting the physical network interface of the router whether there is DHCP
Server, and whether the physical network interface with Dynamic Host Configuration Protocol server establishes DHCP sessions, this step specifically includes：According to DHCP
Agreement broadcasts Dynamic Host Configuration Protocol server to connecting pin by the physical network interface of the router and inquires data packet；If the connection
There are service available at least one Dynamic Host Configuration Protocol server at end, then the Dynamic Host Configuration Protocol server replied according at least one Dynamic Host Configuration Protocol server
Response data packet selects one of Dynamic Host Configuration Protocol server as target Dynamic Host Configuration Protocol server, is sent to the target Dynamic Host Configuration Protocol server
DHCP session request data packets；If the target PPPOE servers, which reply DHCP sessions, confirms data packet, according to the DHCP
Session confirms that data packet establishes DHCP sessions with Dynamic Host Configuration Protocol server.
The present invention also provides a kind of router of achievable LAN interface and wan interface automatic adaptation, it is equipped in router
Multiple physical network interfaces, router include：Module is monitored, the connection status of the physical network interface for monitoring router is
It is no to change；Identification module is electrically connected with the detection module, if the connection status for the physical network interface occurs
Change, then according to the IP configuration modes of the wan interface of selection and the connection client information of the physical network interface, identify
The LAN interface and wan interface of the router；Configuration module is electrically connected with the identification module, for calling configurator to be
The LAN interface and the wan interface are configured.
Preferably, the identification module includes：Detection unit, if the IP configuration modes for wan interface are matched for static IP
Mode is set, then whether detects the connecting pin of the physical network interface of the router with the presence of gateway；Processing unit, with the inspection
Unit electrical connection is surveyed, if the physical network interface is made with the presence of gateway in the connecting pin for the physical network interface
For wan interface, otherwise, using the physical network interface as LAN interface.
Preferably, the identification module includes：Detection unit, if the IP configuration modes for wan interface are matched for dynamic IP
Mode is set, then according to PPPOE agreements, the connecting pin for detecting the physical network interface of the router is serviced with the presence or absence of PPPOE
Device, and whether the physical network interface with PPPOE servers establishes PPPOE sessions；Processing unit, with detection unit electricity
Connection, if the connecting pin of the physical network interface for the router there are PPPOE servers, and the physical network interface
PPPOE sessions are established with PPPOE servers, then using the physical network interface as wan interface, otherwise, by the Physical Network
Network interface is as LAN interface；
And/or；
The detection unit is assisted if the IP configuration modes for being additionally operable to wan interface are dynamic IP configuration mode according to DHCP
View, the connecting pin for detecting the physical network interface of the router whether there is Dynamic Host Configuration Protocol server, and the physical network interface
Whether with Dynamic Host Configuration Protocol server DHCP sessions are established；The processing unit, if be additionally operable to the physical network interface of the router
There are Dynamic Host Configuration Protocol server for connecting pin, and the physical network interface establishes DHCP sessions with Dynamic Host Configuration Protocol server, then by the physics
Network interface is as wan interface, otherwise, using the physical network interface as LAN interface.
Preferably, the identification module further includes specifically：Radio unit, for according to PPPOE agreements, passing through the routing
The physical network interface of device inquires data packet to connecting pin broadcast PPPOE servers；Selecting unit, if being deposited for the connecting pin
In service available at least one PPPOE servers, then according to the PPPOE servers of at least one PPPOE servers reply
Response data packet selects one of PPPOE servers as target PPPOE servers；Transmission unit, with the selecting module
Electrical connection, for sending PPPOE session request data packets to the target PPPOE servers；Session establishment unit, if being used for institute
It states target PPPOE servers and replys PPPOE sessions confirmation data packet, then data packet and PPPOE are confirmed according to the PPPOE sessions
Server establishes PPPOE sessions.
Preferably, the identification module further includes specifically：Radio unit is used for according to DHCP protocol, the router
Physical network interface inquires data packet to connecting pin broadcast Dynamic Host Configuration Protocol server；Selecting unit, can if existing for the connecting pin
At least one Dynamic Host Configuration Protocol server of service is provided, then the dhcp server response data replied according at least one Dynamic Host Configuration Protocol server
Packet, selects one of Dynamic Host Configuration Protocol server as target Dynamic Host Configuration Protocol server, and transmission unit is electrically connected with the selecting module, uses
In to the target Dynamic Host Configuration Protocol server send DHCP session request data packets；Session establishment unit, if being used for the target PPPOE
Server replys DHCP sessions and confirms data packet, then confirms that data packet establishes DHCP with Dynamic Host Configuration Protocol server according to the DHCP sessions
Session.
The automatic adaptation method and router of a kind of LAN interface and wan interface that provide through the invention, can bring with
Lower at least one advantageous effect：
1, in the present invention, cable can be connected to any physical network interface on router by user, and router can root
According to the IP configuration modes of wan interface, detect which physical network interface is wan interface with different detection methods, which object
It is LAN mouthfuls to manage network interface, then configurator is called to carry out corresponding network configuration, avoids user and accidentally accesses cable
LAN mouthfuls of the case where causing user that can not surf the Internet.
2, when the IP configuration modes of wan interface are static IP configuration mode, each physical network interface is detected by arp
Connecting pin can judge whether this physical network interface is wan interface with the presence or absence of gateway, accuracy is very high.
3, when the IP configuration modes of wan interface are dynamic IP configuration mode, due to wan interface and Dynamic Host Configuration Protocol server or
PPPOE servers establish session and could normally surf the Internet, therefore the connecting pin by detecting each physical network interface whether there is
PPPOE servers or Dynamic Host Configuration Protocol server can be accurately judged to the wan interface in physical network interface and LAN interface.
Description of the drawings
Below by a manner of clearly understandable, preferred embodiment is described with reference to the drawings, a kind of LAN interface is connect with WAN
The automatic adaptation method of mouth and above-mentioned characteristic, technical characteristic, advantage and its realization method of router are further described.
Fig. 1 is the flow chart of one embodiment of the automatic adaptation method of a kind of LAN interface of the present invention and wan interface；
Fig. 2 is the flow chart of another embodiment of the automatic adaptation method of a kind of LAN interface of the present invention and wan interface；
Fig. 3 is a kind of knot of the present invention achievable LAN interface and one embodiment of the router of wan interface automatic adaptation
Structure schematic diagram.
Fig. 4 is a kind of another embodiment of the present invention achievable LAN interface and the router of wan interface automatic adaptation
Structural schematic diagram.
Drawing reference numeral explanation：
1- monitors module, 2- identification modules, 21- detection units, 22- processing units, 23- radio units, 24- selection lists
Member, 25- transmission units, 26- session establishments unit, 3- configuration modules.
Specific implementation mode
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, control is illustrated below
The specific implementation mode of the present invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, they are not represented
Its practical structures as product.In addition, so that simplified form is easy to understand, there is identical structure or function in some figures
Component only symbolically depicts one of those, or has only marked one of those.Herein, "one" is not only indicated
" only this ", can also indicate the situation of " more than one ".
The present invention provides one embodiment of a kind of LAN interface and the automatic adaptation method of wan interface, as shown in Figure 1,
Including：
Whether the connection status of the physical network interface of S1 monitoring routers changes；
If the connection status of the S2 physical network interfaces changes, according to the IP configuration modes of wan interface, and
The connection client information of the physical network interface identifies the LAN interface and wan interface of the router；
It is that the LAN interface and the wan interface are configured that S3, which calls configurator,.
Specifically, user is when using router, it is necessary first to subscriber line are connected to wan interface, equipment end is connected
Wiring is connected to LAN interface, and carries out corresponding wan interface, LAN interface with postponing and could use.But for many users
For, they are not aware that is wan interface, what is LAN interface, and not only need connected with network cable on router, also have
Several piece-root graftings often will appear the case where false wiring causes user that can not surf the Internet to the connecting line of equipment end.
In the present embodiment, whether the connection status that router can monitor physical network interface in real time changes, general next
It says, in use, if user will not plug cable again, the connection status of the physical network interface of router is or not router
It will appear change；But when plug connects router cable again during First Contact Connections router or use, then or
When person user restarts router, the connection status of the physical network interface of router will change, at this point, router
The connecting pin of physical network interface can be identified by different methods according to the IP configuration modes of pre-set wan interface
Whether there is network data transmission, identifies which physical network interface is wan interface with this, which physical network interface is
LAN interface.Since general home router is 2 LAN interface of 1 wan interface, 4 LAN interface or 1 wan interface, because
This, identifies 1 wan interface, remaining physical network interface is it may determine that be LAN interface.
After identifying wan interface and LAN interface, it is only necessary to pass through the configuration file in openwrt
/ etc/config/network, you can set physical network interface to wan interface and LAN interface.
If the connection status of the physical network interface of router does not change, illustrate that each physical network of router connects
The network connection that mouth is connect does not change, and need not reconfigure new wan interface and LAN interface, directly continue to use and go through
The wan interface and LAN interface of history.
As shown in Fig. 2, the present invention also provides an implementations of a kind of LAN interface and the automatic adaptation method of wan interface
Example, including：
Whether the connection status of the physical network interface of S1 monitoring routers changes；
If the IP configuration modes of S21 wan interfaces are static IP configuration mode, the physical network for detecting the router connects
Whether the connecting pin of mouth is with the presence of gateway；
If the connecting pin of the S22 physical network interfaces connects the physical network interface as WAN with the presence of gateway
Mouthful, otherwise, using the physical network interface as LAN interface；
If the IP configuration modes of S231 wan interfaces are dynamic IP configuration mode detects the road according to PPPOE agreements
PPPOE servers whether there is by the connecting pin of the physical network interface of device, and whether the physical network interface takes with PPPOE
Business device establishes PPPOE sessions；
The connecting pin of the physical network interface of the detection router in step S231 whether there is PPPOE servers,
And the method that the physical network interface establishes PPPOE sessions with PPPOE servers specifically includes：According to PPPOE agreements, pass through
The physical network interface of the router inquires data packet to connecting pin broadcast PPPOE servers；It can if the connecting pin exists
At least one PPPOE servers of service are provided, then are responded according to the PPPOE servers that at least one PPPOE servers are replied
Data packet selects one of PPPOE servers as target PPPOE servers, is sent to the target PPPOE servers
PPPOE session request data packets；If the target PPPOE servers, which reply PPPOE sessions, confirms data packet, according to
PPPOE sessions confirm that data packet establishes PPPOE sessions with PPPOE servers.
If the connecting pin of the physical network interface of the S241 routers is there are PPPOE servers, and the physical network
Whether interface with PPPOE servers establishes PPPOE sessions, then using the physical network interface as wan interface, otherwise, by institute
Physical network interface is stated as LAN interface；
And/or；
If the IP configuration modes for the wan interface that S232 is selected are dynamic IP configuration mode, according to DHCP protocol, institute is detected
State the physical network interface of router connecting pin whether there is Dynamic Host Configuration Protocol server, and the physical network interface whether with DHCP
Server establishes DHCP sessions；
According to DHCP protocol in step S232, the connecting pin for detecting the physical network interface of the router whether there is
Dynamic Host Configuration Protocol server, and whether the method for establishing DHCP sessions with Dynamic Host Configuration Protocol server specifically includes the physical network interface：According to
DHCP protocol broadcasts Dynamic Host Configuration Protocol server to connecting pin by the physical network interface of the router and inquires data packet；If described
There are service available at least one Dynamic Host Configuration Protocol server for connecting pin, then are taken according to the DHCP that at least one Dynamic Host Configuration Protocol server is replied
Business device response data packet, selects one of Dynamic Host Configuration Protocol server as target Dynamic Host Configuration Protocol server, to the target Dynamic Host Configuration Protocol server
Send DHCP session request data packets；If the target PPPOE servers, which reply DHCP sessions, confirms data packet, according to
DHCP sessions confirm that data packet establishes DHCP sessions with Dynamic Host Configuration Protocol server.
If there are Dynamic Host Configuration Protocol server for the connecting pin of the physical network interface of the S242 routers, and the physical network connects
Mouth establishes DHCP sessions with Dynamic Host Configuration Protocol server, then using the physical network interface as wan interface, otherwise, by the Physical Network
Network interface is as LAN interface.
It is that the LAN interface and the wan interface are configured that S3, which calls configurator,.
Specifically, router is on startup, the connection status of the physical network interface of router can become from not-connected status
It is connected status or user when plugging cable again, the connection status of physical network interface can also change.Routing
Device can mark off the Port interfaces of corresponding number according to the number of physical network interface.The ports processes of router can be with road
Started by the startup of device, if before router startup, cable is already inserted into router, since the down/up events of Ethernet exist
Ports application processes have been sent from before starting, and ports application processes can not receive down/up events, need port process masters
It is dynamic to remove detecting wan interface and LAN interface.
If the IP configuration modes of the wan interface of router are static IP configuration mode, router can be detected by arp orders
The connecting pin for being connected to physical network interface whether there is gateway；If with the presence of gateway, illustrate what this connecting pin should connect
Wan interface, router can be using the physical network interfaces that this connecting pin is connected to as wan interface, remaining physical network interface
As LAN interface.
If the IP configuration modes of the wan interface of router are dynamic IP configuration mode, and are router meeting when dialling up on the telephone
By the port interface process distributed for each physical network interface, according to PPPOE (Point to PointProtocol
Over Ethernet, the point-to-point protocol based on Ethernet) agreement, in a broadcast manner to the connecting pin of physical network interface
Broadcast PPPOE servers inquiry data packet, i.e. PADI (Active Discovery Initiation) data packet, PADI numbers
According to the service for including client request.If what interface end connect is the ends PC, there is no the responses of PPPOE servers, if connecing
Mouthful end is connected to cable, then may have multiple PPPOE servers, these PPPOE servers receive PADI data packets it
Afterwards, if corresponding service can be provided, PPPOE server response data packets, i.e. PADO (Active Discovery can be replied
Offer) data packet.
Since PADI data packets are that router is sent in the form of broadcasting, router may receive more than one
A PADO data packets, it will examine all PADO data packets received and according to server name therein or the service provided
It selects a PPPOE server as target PPPOE servers, and PPPOE sessions is sent to the target PPPOE servers chosen
Request data package, i.e. PADR (PPPoE Active Discovery Request) data packet, PADR data packets include client
Requested service.After target PPPOE server interfaces to PADR data packets, corresponding PPPOE sessions can be replied and confirm data
Packet, i.e. PADS (Active Discovery Session-confirmation) data packet, router is then according to PADS data packets
PPPOE sessions are established with target PPPOE servers.
Entire Active Discover processes are completed at this time, and physical network interface enters STATE_SESSION states, then
Illustrating the physical network interface, there are PPPOE servers, then by the physical network interface as Wan interfaces, and by remaining object
Network interface is managed as LAN interface.Otherwise, then using the physical network interface as LAN interface, continue to judge next physical network
Whether interface is wan interface.
If the IP configuration modes of the wan interface of router be dynamic IP configuration mode, and for automatic IP address allocation when, road
It can be by the port interface process distributed for each physical network interface, according to DHCP (Dynamic Host by device
ConfigurationProtocol, dynamic host configuration protocol) agreement, in a broadcast manner to the connection of physical network interface
End broadcast Dynamic Host Configuration Protocol server inquires data packet, i.e. DHCP discover data packets, and DHCP service is found to find information with this
Device.
Receiving the Dynamic Host Configuration Protocol server of Dynamic Host Configuration Protocol server inquiry data packet (DHCP discover) in a network can all make
Response, it selects one from still unappropriated IP address and distributes to router, and an IP for including distribution is sent to router
The dhcp server response data packet (DHCP offer) of address and other settings.
After router receives the information of dhcp server response data packet offer, one of Dynamic Host Configuration Protocol server is selected
As target Dynamic Host Configuration Protocol server, then DHCP session request data packets are sent to target Dynamic Host Configuration Protocol server in a broadcast manner
(DHCP request), DHCP session request data packets include the interior of the selected Dynamic Host Configuration Protocol server IP address requesting of router
Hold.
After Dynamic Host Configuration Protocol server receives the DHCP session request data packets of router reply, one will be sent to router
The DHCP sessions of a IP address provided comprising it and other settings confirm data packet, and router is told it can be used to provide
IP address.Then, for router just by its ICP/IP protocol and network card binding, router establishes DHCP with target Dynamic Host Configuration Protocol server
Session.
If entire DHCP Discover processes are completed, the connecting pin of the physical network interface of the router exists
Dynamic Host Configuration Protocol server, and the physical network interface establishes DHCP sessions with Dynamic Host Configuration Protocol server, then makees the physical network interface
For wan interface, otherwise, using the physical network interface as LAN interface.
The present invention provides one embodiment of a kind of achievable LAN interface and the router of wan interface automatic adaptation, such as
Shown in Fig. 3, including：
Module 1 is monitored, for monitoring whether the connection status of physical network interface of router changes；
Identification module 2 is electrically connected with the detection module, if the connection status for the physical network interface becomes
More, then institute is identified according to the IP configuration modes of the wan interface of selection and the connection client information of the physical network interface
State the LAN interface and wan interface of router；
Configuration module 3 is electrically connected with the identification module 2, is the LAN interface and described for calling configurator
Wan interface is configured.
Specifically, user is when using router, it is necessary first to subscriber line are connected to wan interface, equipment end is connected
Wiring is connected to LAN interface, and carries out corresponding wan interface, LAN interface with postponing and could use.But for many users
For, they are not aware that is wan interface, what is LAN interface, and not only need connected with network cable on router, also have
Several piece-root graftings often will appear the case where false wiring causes user that can not surf the Internet to the connecting line of equipment end.
In the present embodiment, whether the connection status that the monitoring module 1 of router can monitor physical network interface in real time occurs
Change, in general, router in use, if user will not plug cable, the physical network interface of router again
Connection status be not in change；But plug connects router again during First Contact Connections router or use
When cable, then user restart router when, the connection status of the physical network interface of router will change,
At this point, the identification module 2 in router can be known according to the IP configuration modes of pre-set wan interface by different methods
Whether the connecting pin for not going out physical network interface has network data transmission, identifies which physical network interface is WAN with this
Interface, which physical network interface are LAN interface.Since general home router is 1 wan interface, 4 LAN interface or 1
Therefore 2 LAN interface of a wan interface identify 1 wan interface, remaining physical network interface for LAN it may determine that connect
Mouthful.
After identifying wan interface and LAN interface, configuration module 3 only need by the configuration file in openwrt/
Etc/config/network, you can set physical network interface to wan interface and LAN interface.
As shown in figure 4, the present invention also provides the routers of a kind of achievable LAN interface and wan interface automatic adaptation
One embodiment, multiple physical network interfaces are equipped in router, and the router includes：
Module 1 is monitored, for monitoring whether the connection status of physical network interface of router changes；
Identification module 2 is electrically connected with the detection module, if the connection status for the physical network interface becomes
More, then institute is identified according to the IP configuration modes of the wan interface of selection and the connection client information of the physical network interface
State the LAN interface and wan interface of router；
Radio unit 23, for according to PPPOE agreements, being broadcasted to connecting pin by the physical network interface of the router
PPPOE servers inquire data packet；
Selecting unit 24, if there are service available at least one PPPOE servers, bases for the connecting pin
The PPPOE server response data packets that at least one PPPOE servers are replied, select one of PPPOE servers as mesh
Mark PPPOE servers；
Transmission unit 25 is electrically connected with the selecting module, for sending PPPOE meetings to the target PPPOE servers
Talk about request data package；
Session establishment unit 26, if replying PPPOE sessions for the target PPPOE servers confirms data packet, root
Confirm that data packet establishes PPPOE sessions with PPPOE servers according to the PPPOE sessions.
Detection unit 21 detects the router if the IP configuration modes for wan interface are static IP configuration mode
Physical network interface connecting pin whether with the presence of gateway；
Processing unit 22 is electrically connected with the detection unit 21, if there is net in the connecting pin for the physical network interface
It closes and exists, then using the physical network interface as wan interface, otherwise, using the physical network interface as LAN interface.
And/or；
Radio unit 23, for broadcasting DHCP to connecting pin according to the physical network interface of DHCP protocol, the router
Server inquires data packet；
Selecting unit 24, if there are service available at least one Dynamic Host Configuration Protocol server, bases for the connecting pin
The dhcp server response data packet that at least one Dynamic Host Configuration Protocol server is replied, selects one of Dynamic Host Configuration Protocol server as target
Dynamic Host Configuration Protocol server,
Transmission unit 25 is electrically connected with the selecting module, for sending DHCP sessions to the target Dynamic Host Configuration Protocol server
Request data package；
Session establishment unit 26, if replying DHCP sessions for the target PPPOE servers confirms data packet, basis
The DHCP sessions confirm that data packet establishes DHCP sessions with Dynamic Host Configuration Protocol server.
The detection unit 21, if the IP configuration modes for being additionally operable to wan interface are dynamic IP configuration mode, according to DHCP
Agreement, the connecting pin for detecting the physical network interface of the router whether there is Dynamic Host Configuration Protocol server, and the physical network connects
Mouthful whether with Dynamic Host Configuration Protocol server establish DHCP sessions；
The processing unit 22, if being additionally operable to the connecting pin of the physical network interface of the router, there are DHCP services
Device, and the physical network interface establishes DHCP sessions with Dynamic Host Configuration Protocol server, then connects the physical network interface as WAN
Mouthful, otherwise, using the physical network interface as LAN interface.
Specifically, router is on startup, the connection status of the physical network interface of router can become from not-connected status
For connected status, router can mark off the Port interfaces of corresponding number according to the number of physical network interface.Router
Ports processes can start with the startup of router, if before router startup, cable is already inserted into router, due to ether
The down/up events of net have been sent from before the startup of ports application processes, and ports application processes can not receive down/up things
Part needs port processes actively to remove detecting wan interface and LAN interface.
If the IP configuration modes of the wan interface of router are static IP configuration mode, router can be detected by arp orders
The connecting pin for being connected to physical network interface whether there is gateway；If with the presence of gateway, illustrate what this connecting pin should connect
Wan interface, router can be using the physical network interfaces that this connecting pin is connected to as wan interface, remaining physical network interface
As LAN interface.
If the IP configuration modes of the wan interface of router are dynamic IP configuration mode, and are router meeting when dialling up on the telephone
By the port interface process distributed for each physical network interface, according to PPPOE (Point to Point Protocol
Over Ethernet, the point-to-point protocol based on Ethernet) agreement, radio unit 23 can be to the connecting pin of physical network interface
Broadcast PPPOE servers inquiry data packet, i.e. PADI (Active Discovery Initiation) data packet, PADI numbers
According to the service for including client request.If what if interface end connect is the ends PC, there is no the corresponding of PPPOE servers,
If interface end is connected to cable, there may be multiple PPPOE servers, these PPPOE servers receive PADI data
After packet, if corresponding service can be provided, PPPOE server response data packets, i.e. PADO (Active can be replied
Discovery Offer) data packet.
Since PADI data packets are that router is sent in the form of broadcasting, router may receive more than one
A PADO data packets, selecting unit 24 will examine all PADO data packets received and according to server name therein or carried
The service of confession selects a PPPoE server as target PPPOE servers, and by transmission unit 25 to the target chosen
PPPOE servers send PPPOE session request data packets, i.e. PADR (PPPoEActive Discovery Request) data
Packet, PADR data packets include the requested service of client.After target PPPOE server interfaces to PADR data packets, it can reply
Corresponding PADS (Active Discovery Session-confirmation) data packet, the reply in router are established single
Member 26 then establishes PPPOE sessions according to PADS data packets and target PPPOE servers.Entire Active Discover mistakes at this time
Journey is completed, and physical network interface enters STATE_SESSION states, then illustrates the physical network interface there are PPPOE servers,
Then by the physical network interface as Wan interfaces, and using remaining physical network interface as LAN interface.Otherwise, then by the object
Network interface is managed as LAN interface, continues to judge whether next physical network interface is wan interface.
If the IP configuration modes of the wan interface of router be dynamic IP configuration mode, and for automatic IP address allocation when, road
It can be by the port interface process distributed for each physical network interface, according to DHCP (Dynamic Host by device
ConfigurationProtocol, dynamic host configuration protocol) agreement, by radio unit 23 in a broadcast manner to physics
The connecting pin broadcast Dynamic Host Configuration Protocol server of network interface inquires data packet, i.e. DHCP discover data packets, and information is found with this
To find Dynamic Host Configuration Protocol server.
Receiving the Dynamic Host Configuration Protocol server of Dynamic Host Configuration Protocol server inquiry data packet (DHCP discover) in a network can all make
Response, it selects one from still unappropriated IP address and distributes to router, and an IP for including distribution is sent to router
The dhcp server response data packet (DHCP offer) of address and other settings.
After router receives the information of dhcp server response data packet offer, wherein by the selection of selecting unit 24
Then one Dynamic Host Configuration Protocol server sends DHCP sessions by transmission unit as target Dynamic Host Configuration Protocol server to target Dynamic Host Configuration Protocol server
Request data package (DHCP request), DHCP session request data packets include that the selected Dynamic Host Configuration Protocol server of router asks IP
The content of address.
After Dynamic Host Configuration Protocol server receives the DHCP session request data packets of router reply, one will be sent to router
The DHCP sessions of a IP address provided comprising it and other settings confirm data packet, tell dhcp client that can use it
The IP address of offer.Then, router passes through session establishment unit 26 and target just by its ICP/IP protocol and network card binding
Dynamic Host Configuration Protocol server establishes DHCP sessions.
If entire DHCP Discover processes are completed, the connecting pin of the physical network interface of the router exists
Dynamic Host Configuration Protocol server, and the physical network interface establishes DHCP sessions with Dynamic Host Configuration Protocol server, then makees the physical network interface
For wan interface, otherwise, using the physical network interface as LAN interface.
It should be noted that above-described embodiment can be freely combined as needed.The above is only the preferred of the present invention
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, several improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. the automatic adaptation method of a kind of LAN interface and wan interface, multiple physical network interfaces, feature are equipped in router
It is, including step：
Whether the connection status for monitoring the physical network interface of router changes；
If the connection status of the physical network interface changes, according to the IP configuration modes of wan interface and the object
The connection client information for managing network interface, identifies the LAN interface and wan interface of the router；
It is that the LAN interface and the wan interface are configured to call configurator.
2. the automatic adaptation method of a kind of LAN interface and wan interface according to claim 1, which is characterized in that according to
The IP configuration modes of wan interface and the connection client information of the physical network interface, identify that the LAN of the router connects
Mouth and wan interface, this step specifically include：
If the IP configuration modes of wan interface are static IP configuration mode, the company of the physical network interface of the router is detected
End is connect whether with the presence of gateway；
If the connecting pin of the physical network interface is with the presence of gateway, no using the physical network interface as wan interface
Then, using the physical network interface as LAN interface.
3. the automatic adaptation method of a kind of LAN interface and wan interface according to claim 1, which is characterized in that according to
The IP configuration modes of wan interface and the connection client information of the physical network interface, identify that the LAN of the router connects
Mouth and wan interface, this step further include specifically：
If the IP configuration modes of wan interface are dynamic IP configuration mode detects the object of the router according to PPPOE agreements
The connecting pin for managing network interface whether there is PPPOE servers, and whether the physical network interface is established with PPPOE servers
PPPOE sessions；
If the connecting pin of the physical network interface of the router there are PPPOE servers, and the physical network interface with
PPPOE servers establish PPPOE sessions, then using the physical network interface as wan interface, otherwise, by the physical network
Interface is as LAN interface；
And/or；
If the IP configuration modes of the wan interface selected are dynamic IP configuration mode, according to DHCP protocol, the router is detected
The connecting pin of physical network interface whether there is Dynamic Host Configuration Protocol server, and whether the physical network interface is built with Dynamic Host Configuration Protocol server
Vertical DHCP sessions；
If the connecting pin of the physical network interface of the router is there are Dynamic Host Configuration Protocol server, and the physical network interface and DHCP
Server establishes DHCP sessions, then using the physical network interface as wan interface, otherwise, the physical network interface is made
For LAN interface.
4. the automatic adaptation method of a kind of LAN interface and wan interface according to claim 3, which is characterized in that according to
PPPOE agreements, the connecting pin for detecting the physical network interface of the router whether there is PPPOE servers, and the physics
Whether network interface with PPPOE servers establishes PPPOE sessions, this step specifically includes：
According to PPPOE agreements, PPPOE servers are broadcasted to connecting pin by the physical network interface of the router and inquire data
Packet；
If there are service available at least one PPPOE servers for the connecting pin, according at least one PPPOE servers
The PPPOE server response data packets of reply select one of PPPOE servers as target PPPOE servers, to described
Target PPPOE servers send PPPOE session request data packets；
If the target PPPOE servers, which reply PPPOE sessions, confirms data packet, data are confirmed according to the PPPOE sessions
Packet establishes PPPOE sessions with PPPOE servers.
5. the automatic adaptation method of a kind of LAN interface and wan interface according to claim 3, which is characterized in that according to
DHCP protocol, the connecting pin for detecting the physical network interface of the router whether there is Dynamic Host Configuration Protocol server, and the Physical Network
Whether network interface with Dynamic Host Configuration Protocol server establishes DHCP sessions, this step specifically includes：
According to DHCP protocol, Dynamic Host Configuration Protocol server is broadcasted to connecting pin by the physical network interface of the router and inquires data
Packet；
If there are service available at least one Dynamic Host Configuration Protocol server for the connecting pin, returned according at least one Dynamic Host Configuration Protocol server
Multiple dhcp server response data packet selects one of Dynamic Host Configuration Protocol server as target Dynamic Host Configuration Protocol server, to the target
Dynamic Host Configuration Protocol server sends DHCP session request data packets；
If the target PPPOE servers, which reply DHCP sessions, confirms data packet, data packet is confirmed according to the DHCP sessions
DHCP sessions are established with Dynamic Host Configuration Protocol server.
6. a kind of router of achievable LAN interface and wan interface automatic adaptation, connect equipped with multiple physical networks in router
Mouthful, which is characterized in that router includes：
Module is monitored, for monitoring whether the connection status of physical network interface of router changes；
Identification module is electrically connected with the detection module, if the connection status for the physical network interface changes,
According to the IP configuration modes of the wan interface of selection and the connection client information of the physical network interface, the routing is identified
The LAN interface and wan interface of device；
Configuration module is electrically connected with the identification module, is the LAN interface and the wan interface for calling configurator
It is configured.
7. the router of a kind of achievable LAN interface and wan interface automatic adaptation according to claim 6, feature exist
In the identification module includes：
Detection unit detects the physics of the router if the IP configuration modes for wan interface are static IP configuration mode
Whether the connecting pin of network interface is with the presence of gateway；
Processing unit is electrically connected with the detection unit, if the connecting pin for the physical network interface with the presence of gateway,
Using the physical network interface as wan interface, otherwise, using the physical network interface as LAN interface.
8. the router of a kind of achievable LAN interface and wan interface automatic adaptation according to claim 6, feature exist
In the identification module includes：
Detection unit, according to PPPOE agreements, detects institute if the IP configuration modes for wan interface are dynamic IP configuration mode
State the physical network interface of router connecting pin whether there is PPPOE servers, and the physical network interface whether with
PPPOE servers establish PPPOE sessions；
Processing unit is electrically connected with the detection unit, if the connecting pin of the physical network interface for the router exists
PPPOE servers, and the physical network interface establishes PPPOE sessions with PPPOE servers, then by the physical network interface
As wan interface, otherwise, using the physical network interface as LAN interface；
And/or；
The detection unit, if the IP configuration modes for being additionally operable to wan interface are dynamic IP configuration mode, according to DHCP protocol,
Detect the physical network interface of the router connecting pin whether there is Dynamic Host Configuration Protocol server, and the physical network interface whether
DHCP sessions are established with Dynamic Host Configuration Protocol server；
The processing unit, if the connecting pin of the physical network interface of the router is additionally operable to there are Dynamic Host Configuration Protocol server, and institute
It states physical network interface and establishes DHCP sessions with Dynamic Host Configuration Protocol server, then using the physical network interface as wan interface, otherwise,
Using the physical network interface as LAN interface.
9. the router of a kind of achievable LAN interface and wan interface automatic adaptation according to claim 8, feature exist
In the identification module further includes specifically：
Radio unit, for according to PPPOE agreements, PPPOE to be broadcasted to connecting pin by the physical network interface of the router
Server inquires data packet；
Selecting unit, if there are service available at least one PPPOE servers for the connecting pin, according at least one
The PPPOE server response data packets that a PPPOE servers are replied, select one of PPPOE servers as target PPPOE
Server；
Transmission unit is electrically connected with the selecting module, for sending PPPOE session requests to the target PPPOE servers
Data packet；
Session establishment unit, if replying PPPOE sessions for the target PPPOE servers confirms data packet, according to
PPPOE sessions confirm that data packet establishes PPPOE sessions with PPPOE servers.
10. the router of a kind of achievable LAN interface and wan interface automatic adaptation according to claim 8, feature exist
In the identification module further includes specifically：
Radio unit, for broadcasting Dynamic Host Configuration Protocol server to connecting pin according to the physical network interface of DHCP protocol, the router
Inquire data packet；
Selecting unit, if there are service available at least one Dynamic Host Configuration Protocol server for the connecting pin, according at least one
The dhcp server response data packet that a Dynamic Host Configuration Protocol server is replied, selects one of Dynamic Host Configuration Protocol server as target DHCP service
Device,
Transmission unit is electrically connected with the selecting module, for sending DHCP session request numbers to the target Dynamic Host Configuration Protocol server
According to packet；
Session establishment unit, if replying DHCP sessions for the target PPPOE servers confirms data packet, according to
DHCP sessions confirm that data packet establishes DHCP sessions with Dynamic Host Configuration Protocol server.
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