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How to solve the situation that the wireless network is not connected? in view of this problem, this article introduces the corresponding analysis and answer in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible method.

Analysis of several faults when Wireless Network can not be connected

What to do if the wireless network is not connected, and there are several ways to solve the problem.

Wireless network, especially wireless local area network, brings great convenience to our life, providing ubiquitous and high-bandwidth network services. however, because of the unique nature of wireless channel, the wireless network connection is unstable and the quality of service is greatly affected. This paper will introduce some common wireless network failures and troubleshooting methods to help users remove these faults timely and effectively.

1. Hybrid wireless networks often go offline.

Failure: use Linksys WPC54G network cards and Linksys WRT54G AP to build wireless Lans, both of which use IEEE 802.11g protocol, and there are a few 802.11b network cards in the network. Often disconnect when using WRT54G for 54Mb/s connections.

Fault analysis: in theory, IEEE 802.11g protocol is backward compatible with 802.11b protocol, and devices using both protocols can connect to AP using IEEE 802.11g protocol at the same time. However, from practical experience, as long as there is a network card in the network that uses the IEEE 802.11b protocol, then the connection speed of the whole network will be reduced to 11Mb/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 hybrid (MIXED) mode, which is compatible with both IEEE 802.11b and 802.11g modes.

two。 The wireless client cannot receive the signal

Failure phenomenon: after building the wireless local area network, it is found that the client can not receive the signal of the wireless AP. The wireless network has no signal.

Fault analysis: the reasons for this failure may be as follows:

(1) the wireless network card is too far away from the wireless AP or wireless router, which exceeds the coverage of the wireless network. When the wireless signal arrives at the wireless network card, it is already very weak, which makes the wireless client unable to connect normally.

(2) the wireless AP or wireless router is not powered on or is not working properly, so that the wireless client cannot connect at all.

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

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

(5) for security reasons, wireless AP or wireless router will filter some MAC addresses. If the MAC address of the network card is filtered out, then the wireless network will not be connected.

Troubleshooting: the following methods can be used to resolve:

(1) install an antenna in the wireless client to enhance the receiving ability. If many clients cannot connect to the wireless AP, install omni-directional antennas at the wireless AP to enhance transmission capabilities.

(2) check if the wireless AP or wireless router is working properly by looking at the LED indicator, and use the laptop for a close test.

(3) if the wireless client uses an antenna, try to adjust the direction of the antenna so that it faces 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 MAC address of the wireless client to a trusted MAC address.

3. The wireless client can receive the signal normally, but the wireless network cannot connect.

Malfunction: there is a signal but the wireless network cannot be connected.

Fault analysis: why can't you connect if there is a signal in the wireless network? The reasons for this failure may be:

(1) the IP address of the wireless AP or wireless router has been assigned. When the wireless client is set to obtain the IP address automatically, the wireless network cannot connect because there is no available IP address.

(2) the wireless network card does not have the correct IP address set. When the user sets the IP address manually, if the set IP address and the IP address of the wireless AP are not in the same network segment, the wireless network will not be connected.

Troubleshooting:

(1) increase the address range of wireless AP or wireless router.

(2) set the correct IP address for the wireless network card to ensure that it is in the same network segment as the IP address of the wireless AP.

4. The wireless network can communicate normally, but cannot communicate with the Ethernet connected to the wireless router

Failure phenomenon: the wireless client can communicate with the wireless router normally, but cannot communicate with the Ethernet connected to the wireless router.

Fault analysis: the cause of the failure may be:

(1) Local area network (LAN) port connection failure.

(2) the IP address is set incorrectly.

Troubleshooting:

(1) check that the LAN port is connected to Ethernet correctly by looking at the LAN indicator. A crossover cable should be used to connect the LAN port to the Ethernet hub.

(2) check whether the wireless network and Ethernet are in the same IP address range, and only hosts within the same IP address range can communicate.

This is the answer to the question on how to solve the problem that the wireless network is not connected. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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