Routing is set correctly but can't access the Internet. Modify LAN address to solve

The broadband line directly accesses the Tp-link TL-R402, and a line is disconnected from the lan interface of the Tp-link, and the lan interface of the D-link wireless route is connected. At the same time, a line is connected to the notebook A in the D-LINK lan, and the notebook B uses the wireless network for access. At this point, notebook A, notebook B can not access the Internet, while the lower right corner of the notebook A shows that the local cable is not plugged in! Enter the notebook A NIC configuration, set the Speed ​​Duplex to 10 Mb Half, and the lower right corner shows that the local connection is connected. But I can't get online. Notebook B can be connected to D-Link via wireless, but it is also unable to access the Internet. At the same time, the indicators on both ends of the line from D-Link to Tp-Link are always in the state of data exchange (flashing once every 2 seconds). How can I solve the problem of Internet access between Notebook A and Notebook B through this connection?

Under normal circumstances, the router has a default gateway, IP address and the like. Generally speaking, most of the households used are pulled by other landlords or because wired routing does not have wireless functions. Routing to solve wireless problems. So the dual routing setup comes out. According to the protocol, the IP address segment between the two network segments cannot be repeated. Otherwise, the routing table of the router does not know where to send it~~~~ For the problem that this IP address segment cannot be duplicated, you can modify the router LAN. The IP address segment is used to modify the routing segment used by the entire router. Well, before introducing how to set up, first provide some of the content that needs to be used: Intranet segment: The intranet segment is an area that is not used for external network access, and can also be called a private address. This part of the address cannot be applied on the Internet. The data exchange between the internal network and the external network is forwarded by a device such as a router (applied to NAT forwarding). The IP address segment used by the intranet network: 10.0.0.0-10.255.255.255 (for large enterprise internal networks) 172.16.0.0 -172.31.255.255 (for schools, medium-sized enterprises, medium-sized local area networks) 192.168.0.0-192.168.255.255 (for home and small business local area networks) In addition, it can be called external network (also called public network) ( In addition to 224.0.0.1) 224.0.0.1---239.255.255.254 is the multicast address 240.0.0.1---247.255.255.254 is the alternate address (data provided by Baidu and Huasoft Network Foundation Course) The LAN address interface of the three-tier router (including the entry-level enterprise router, entry-level game router, SOHO router) belongs to the gateway address setting interface. After knowing so much, how to set it up. The first thing to know is the network segment used by the previous router. ? ? Then make sure that the route you bought is on the same network segment. If you are, you need to change it. If you are not there, you can connect directly to different routers. There are different settings for different routers. Here are the settings of TPLINK, DLINK and Leike. Most routers have such a setting interface: except WAN port. Next, the LAN port only needs to change the IP address of the LAN port to some of the above requirements. If you are in trouble, change the third number directly: such as 192.168.1.1, change it to 192.168.X.1 (X is 0-255), as long as you do not keep up with a router network segment conflict can be finally modified The restart is affirmative. For the problem that the routing interface cannot be accessed after restarting, you need to release the local connection IP address and obtain it again (or directly plug the network cable and plug it in again). If it still doesn't work, manually modify the IP address and gateway address, enter the router to enable DHCP function, if you fail to modify the DHCP address segment, you can finally provide the TPLINK network classroom about how to connect dual routes: http://www .tp-link.com.cn/pages/article-detail.asp?result=school&d=89 How to configure multiple broadband routers in the LAN
Users who have contacted broadband routers generally understand the broadband routers. The port has a WAN port and a LAN port. In the working process, the broadband router has such a feature that the data flow from the LAN to the WAN direction is not restricted by the router by default, and cannot pass through the WAN to the LAN by default. (Note: The wireless access part of the wireless broadband router is subordinate to the LAN range.) That is to say, by default, packets sent from the computer in the LAN enter the router's LAN port, which can be sent out from the WAN port through the router, but from After the WAN-initiated packet enters the WAN port, the router does not allow those packets to pass by default. This document describes how to configure multiple broadband routers in a LAN. This document uses the wired router TL-R460+ and the wireless router TL-WR541G+ as an example. First, the network topology analysis 1, assuming you have an ADSL broadband line, through the TL-R460 + broadband router to achieve two computers to share Internet access, the network connection diagram is as follows: Broadband line <—> ADSL MODEM <—> (WAN port) R460+(LAN port)<—>Computer 2. For some reason, you purchased the TL-WR541G+ wireless broadband router, and you want the network to provide wireless access. This time must be taken from the LAN port of the TL-R460+. The root cable is connected to the TL-WR541G+. Should it be connected to the WAN port of the WR541G+? Still connected to the LAN port of WR541G+? There are two types of network connection diagrams:

1) Broadband line <—>ADSL MODEM<—>R460+(LAN port)<—〉(WAN port)WR541G+(wireless)<—〉Computer
According to this wiring method, just make the following settings: First, configure the IP address of the computer 2 to 192.168.1.X (X takes the natural number range 2 & mdash; 254), and enter the management of WR541G+ through http://192.168.1.1. In the interface, in the "Network Parameters" - "LAN Port Settings", change the IP address of the LAN port to: 172.16.1.1 (Note: This address can be changed to any internal network address different from the original address segment), Save the prompt to restart the router. Next, change the IP address of the computer to 172.16.1.X (X takes the natural number range 2 to 254), as shown below: Enter the WAN port of the WR541G+ through the http://172.16.1.1 address again to configure the WAN port. In this connection mode, you need to configure a static IP in the WAN port setting in the configuration interface of the WR541. The parameters are as follows: IP address: 192.168.1.X (X takes the natural number range 2 to 254) Subnet mask: 255.255.255.0 Default gateway: 192.168.1.1 Note: After connecting in this way, the computer under the router R460+ cannot communicate with the computer below the WR541G+ through the network neighbor. 2) Broadband line <—>ADSL MODEM<—>R460+(LAN port)<—〉(LAN port) WR541G+(wireless)<—>Computer This connection method does not use the WAN port of WR541G+ There is no need to configure the WAN port. You only need to configure the following parts: First, you need to disable the WR541G+ DHCP server function (select “do not enable ”). Second, change the LAN address of the WR541G+ (in the same network segment as the LAN port address of the TL-R460+), for example, change to 192.168.1.254, as long as the IP address is not used by other computers. The next step is to connect the WR541G+ and the computer via wireless or wired. After the above two steps are configured, the WR541G+ is equivalent to a “wireless switch”, so the TCP/IP attribute of the computer connected to the WR541G+ by wired or wireless means. To be consistent with the R460+! It is equivalent to these computers are directly connected to the computer under the R460+ LAN port. The TCP/IP attribute parameters of the computer are configured as shown below:

After the above configuration, you can share the Internet with multiple computers under the internal network. .