Network troubleshooting: Common Network online issues

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In the daily use of the network we often encounter a variety of connectivity issues, here is to choose a representative network online issues for everyone to answer.

1. My home uses ADSL broadband, using routers to automatically dial and bring two computers at the same time online. My neighbors want to share broadband with me recently, so I added a broadband router to my broadband router, and connected the two computers below to realize network sharing. But I found that the neighbor's computer can drag and drop the shared files on my computer, but I can't see his computer sharing files, use ping command also impassability, what is this?

A: Router 1 connects ADSL at the WAN port to achieve a connection to the extranet. The LAN port (192.168.0.1) connects the PC1 (192.168.0.2), PC2 (192.168.0.3) and Router 2 wan (192.168.0.4) to achieve the purpose of network sharing. This way, the LAN port of Router 2 is connected to the PC3 and PC4, which can also realize network share through WAN.

2. There is a desktop, and recently acquired a laptop, through a router to share the Internet. Recently, the normal network has been used, but there is a strange phenomenon. Once the laptop is powered on, the network will disconnect once and the network slows down after you turn on the desktop. When you turn off the desktop, the network disconnects again and the network returns to normal after reconnecting. But as long as the desktop on the boot, then open the notebook will be no problem, but the network speed is slightly slow, just shut down the desktop, the network will disconnect once.

A: Only open the notebook computer, enter the System Prompt window, in which the "arp–a" command to obtain the router's IP address and MAC address information. Where interface: After the "192.168.1.2", that is, for routers assigned to the local IP address, and the "192.168.1.1" under Internet addresses for routers used by the Ip,physical addressing The "00-14-78-b6-47-5c" under the Internet is the MAC address of the router. Record it, then run the "ipconfig/all" command, in which to obtain the MAC address of the local network card, here is "00-11-85-1b-0d-0c".

When finished, save it as a bangding.bat batch file, put it into the "start → all Programs → startup" folder, so that you can prevent ARP virus address spoofing by binding the router and the local IP address.

3. I use the wired way to the Internet, directly connect the network cable to the computer network card, you can automatically assign to IP Internet. Later, I bought a broadband router, using the "Dynamic IP" connection, so that both computers can be shared through the router Internet. Can be recently found connected to the router, two computers can not access the Internet, the router prompts the network is connected, the two computers can ping each other. Later, the network returned to normal after using only one computer to connect the cable directly.

After you log on to the admin interface, click the "Network Parameters →mac address clone" option in the left-hand menu, and then go to the right window where you see the MAC address used by the router as "00-14-78-b6-47-5d", and the PC currently logged on to the router uses the MAC address " 00-11-85-1b-0d-0c ", Just click the" Clone MAC Address "button, you can enable the router to convert its own MAC address to the current login host's MAC address, and in this sent out of the IP packet, contains this unique MAC address information, Saving changes can break the limit of multiple-machine sharing.

4. My notebook has been using ADSL dial-up Internet, recently bought a wireless router, want to wireless internet. But when I hear about wireless Internet access, if the wireless router does not set encryption, others can also share the network over a wireless connection. When encrypted for a wireless router, the network speed is affected. Now I would like to ask how the encryption of the wireless network on the speed of the impact of transmission, how to encrypt?

A: For example, the TP of a product when you need to encrypt wireless access, you can first login to the wireless router management interface, then click on the left of the "wireless parameters → basic settings" option, you can see the "Open Security Settings" checkbox, check it out, select the "Security type" drop-down menu of "WEP" Encryption method, and set "security options" to "Automatic", "key format selection" to "16" can be.

Next, in the key input menu below, you should select the Key 2 input box, which allows you to reserve a "separate key" setting for the future. Just select the key type on the key 2 menu bar as "64 is encrypted," and then type the password you want to encrypt in the Key Content entry field. Finally, the encryption of the wireless connection is completed after the changes are saved and the route is restarted.

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