How do computers often go offline without reason? Teach you how to solve it

When we are using a wireless network, there will always be problems like this, but the most common problem is the amount of money that is often dropped. For the problem that the wireless network is often dropped, let's summarize it now. So let's take a closer look at the specific content here. First, let's look at the problems related to dropped calls in hybrid networks. I hope that these summaries will help everyone.

Wireless network often dropped 1: Hybrid wireless network often dropped

Symptom: Build wireless LAN using Linksys WPC54G network card and Linksys WRT54G AP, they all use IEEE 802.11g protocol. There are also a few 802.11b network cards in the network. When using the WRT54G for 54Mb/s connection, it is often dropped.

Failure Analysis: In theory, the IEEE 802.11g protocol is backward compatible with the 802.11b protocol, and devices using these two protocols can simultaneously connect to an AP using the IEEE 802.11g protocol. However, from the practical experience, as long as there is a network card using the IEEE 802.11b protocol in the network, the connection speed of the entire network will be reduced to 11 Mb/s (the transmission speed of the IEEE 802.11b protocol).

Troubleshooting: When mixing IEEE 802.11b and IEEE 802.11g wireless devices, be sure to set the wireless AP to MIXED mode. With this mode, you can be compatible with IEEE 802.11b and 802.11g. Two modes.

The wireless network is often dropped 2: The wireless client does not receive the signal

Symptom: After the wireless LAN is built, it is found that the client does not receive the wireless AP signal. There is no signal on the wireless network.

Fault Analysis: The causes of this fault may be as follows:

(1) The wireless network card is too far away from the wireless AP or wireless router, exceeding the coverage of the wireless network. When the wireless signal arrives at the wireless network card, it is already very weak, making the wireless client unable to make a normal connection.

(2) The wireless AP or wireless router is not powered or does not work properly, causing the wireless client to be unable to connect at all.

(3) When the wireless client is far away from the wireless AP, we often use directional antenna technology to enhance the propagation of wireless signals. If there is a problem with the angle of the directional antenna, the wireless client will not be able to connect properly. .

(4) If the wireless client does not correctly set the network IP address, it cannot communicate with the wireless AP.

(5) For security reasons, the wireless AP or wireless router will filter some MAC addresses. If the MAC address of the network card is filtered out, the wireless network will often drop.

Troubleshooting: The following methods can be used to solve:

(1) Install an antenna on the wireless client to enhance the receiving capability. If there are many clients that cannot connect to the wireless AP, install an omnidirectional antenna at the wireless AP to enhance the transmission capability.

(2) Check the LED indicator to check if the wireless AP or wireless router is working properly and use a laptop for close-range testing.

(3) If the wireless client uses the antenna, try to adjust the direction of the antenna to face the wireless AP or wireless router.

(4) Set the correct IP address for the wireless client.

(5) Check the security settings of the wireless AP or wireless router, and set the wireless client's MAC address to a trusted MAC address.

Wireless network often drops 3: Wireless clients can receive signals normally but wireless networks are often dropped