Troubleshooting solutions for wireless network failures

Symptom: Unable to log on to the Broadband Router settings page.

Reasons and Solutions:

First verify that the router and computer are properly connected. Check that the LEDs for the network card port and router LAN port are normal.

If the LED is not normal, reseat the network cable or replace the twisted pair, and then check the Internet connection in the computer: first set the IP address of the computer to automatically obtain the IP address. Then check that the network card connection to obtain the correct IP address and gateway information, if not please manually set, if the information has been correctly obtained, please note whether the Firewall service is turned on, such as open please disable it.

Compare the new router (especially the household) to use IE login router for maintenance, so we can select "Never dial connection" in IE connection settings, and then click "LAN Settings" to clear all the options. Then enter the IP address of the broadband router in the browser's address bar and press ENTER to enter the Settings page. If you are unable to log in, try setting the gateway to the IP address of the router, and the native IP address is set to connect to the IP address of the router with the network segment.

If the above method does not resolve the problem you are experiencing, check to see if the NIC is in conflict with other hardware in the system.

Failure phenomena often occur when you cannot connect to the router or the connection is very slow.

Why and how to solve

This situation with the network cable is relatively large.

If there is a frequent connection problem, there may be a quality problem or contact problem with the crystal head, and note that each interface is plugged in. and replace the good quality crystal head. Also check that the line sequence of the network cable is correct.

Fault phenomenon using ADSL way to surf the internet, set up a good router but can not use dial-up software to dial.

Why and how to solve

Set up the router's PPPoE connection from the router to dial, no longer need to use the computer's dial-up software, as long as the computer's IP address set to "Automatically get" or set to the router does not conflict with the IP address.

The symptom router is unable to obtain the WAN address.

Why and how to solve

First check to see if the router's WAN port LEDs are lit, and if there is no light, there is a problem with the network cable or the crystal head. Then check that the router is configured correctly and save the reboot, otherwise the settings will not take effect! Sometimes you may need to clone the MAC address of the network card to the router's WAN interface, and set up a reference router manual. For more information, please see the Campus network topic, LAN, Wireless mesh network Introduction topic, or into discussion group discussion.

Is behind a firewall or router and prevents both sides from connecting directly to the Internet. The network address translation devices used by both parties are required to support UPnP technology. About the router's support for this technology, please look at the router instructions you use, and consult the manufacturer's technical support. Individual routers need to set UPnP to "Enable" in LAN settings. Systems that support UPnP are mainly Windows XP and Windows Me.

Symptom: The external network can not access the server set up in the LAN (such as WWW ftp, etc.).

Reasons and Solutions:

If you set up a server in your local area network, use the router's port mapping feature. Please refer to the Router manual for the setup items of each model router.

Note that the LAN IP address of the server, the port provided externally, the port used by the server, and the protocol used are required. Here are some common ports for reference:

FTP-20 SMTP-25 HTTP-80 pop3-110 pcAnywhere-22 5631 5632 MSN File transfer -6891~6900. For more port information, go to the network to find all the port instructions.

Symptom: Forgot the router's IP address/password, can no longer enter the settings page.

Reasons and Solutions:

Each router's default IP address and cancellation password are not the same, some require some command-line operations (such as Cisco devices using the iOS operating system), there is a device can be calculated by the manufacturer of a universal password, such as D-link device through the product string number to calculate, Also use the Reset key on the device reset several times to restore the original password (such as some domestic brand equipment).