periods. The data transmission rate of the old 802.11a/g Wireless Access Point cannot exceed 54 Mbps (the TCP throughput of 27 Mbps), because the signal strength and speed will decrease as the distance expands, users have to roam in the residential area or without stopping, otherwise they will interrupt sensitive programs with latency. Placing all APs in a small number of crowded channels will limit the capability, seriously affecting the normal use of Bluetooth devices in the GHz band,
enterprise. Do not deploy a wireless router to ensure the security of their department information. For convenience and security, we often choose security. After all, if such information is leaked, it may cause a fatal blow to the Enterprise.
Installation Location Selection
1. radio frequency interference. Equipment such as 2.4 GHz and 5 GHz cordless phones, microwave ovens, and nearby networks can cause destructive radio frequency interference, aff
In general, the 802.11 series of wireless network products have good compatibility, and most wireless network adapters and wireless routers do not have compatibility issues. But for the sake of stability, we recommend that you use the same brand of wireless router and wireless network card for high requirements.
The load-bearing wall of reinforced concrete has a strong obstacle to wireless signals. Therefore, for the "duplex" residential and Villa-type home environment, the best solution is to
location where interference occurs and determine its source. In many cases, interference is caused by microwave ovens, cordless phones, security cameras, or faulty Bluetooth devices. Another common problem is that the commercial environment around Wi-Fi can interfere with your space. Sometimes it is possible to completely eliminate the interference source. In other cases, the more feasible method is to find an area in the 802.11 band and then manuall
room, so we only need to put the wireless device in the living room.
In addition, interference from electrical appliances to wireless networks may also result in signal instability. In real life, we find that microwave ovens may have an impact on signals when working, as long as they are far away. Wireless products do not affect electrical appliances, because Wireless frequencies are different from those of TVs, radios, and wireless phones with GHZ cordless
smooth wireless network. However, if the network connection speed is lower than 2mb/s for a continuous period of time, it indicates that the network may have failed and can do the following to restore the original transfer rate:1. See if there are any obstructions between the wireless devices. There is a block between the wireless AP and the destination transmitting location, especially the metal shielding, which will seriously affect the transmission of the wireless signal. It is recommended t
"1700", "1705" or "1709", it is ultimately telecommunications, mobile and unicom. You think that the temptation to break your teeth will pry the user's sleeping mind.In other words, it is a matter of national information security industry, Monopoly is also justifiable. The virtual operator should be given more preferential policies. For example, in 2001, when the virtual network operator license was issued in Hong Kong, the first licensed mobile communications program was given the power to lau
other end of the optical fiber. The purpose of the connectivity test is to determine whether a breakpoint exists in the optical fiber. This method is used when purchasing optical cables.
(2) end-end loss test. End-to-End loss test adopts the plug-in test method. Using a power measuring instrument and a light source, a certain position of the tested optical fiber is used as a reference point to test the power value of the test, then, the client end is tested and the signal increase value is reco
combination with SDP. This value is used to support different implementations of a specific protocol. The two range fields are set as follows:
Therefore, when we apply for MnS, we start from 0x1001. The reason is 0x0001 ~ 0x0eff is reserved by SIG. Which protocol does each of these reserved values correspond? See the following table for details:
VcD4KPHA + PHN0cm9uZz48YnI + cda-vc3ryb25np1_vcd4kphrhymxligjvcmrlcj0 = "1" cellspacing = "0" cellpadding = "0">
Protocol
PSM
SDP
Zero X 0001
R
The terminal connects to a 3G/4G router and uses a 3G/4G network to access the Internet.Troubleshoot the problem as follows:A vro can provide multiple terminals to share the internet. When a terminal on the intranet downloads, games, movies, and other large-volume internet access applications, other users may experience slow Internet access.You can temporarily disconnect all other terminals to ensure that only one terminal is connected to the Internet on the router, and then test whether the net
there are partitions or obstacles, will affect the wireless terminal negotiation rate, resulting in inaccurate speed.
4
, turn off the speed limit function
Log on to the router management
interface, click on the
Device management
>>
Host network , check that no speed limit is set for this terminal, as shown below.
If the router for the traditional interface, login management interface, click on
IP
Bandwidth control ,
confirm not che
40%, extended successfully, but the Extender is poorly positioned, too close or too far
workaround : Adjust the placement of the extender appropriately according to the LED status and make sure the LEDs are green.
When using an extender to scan a wireless signal from a front-end main router, if you see a lot of wireless signals around it, excessive signals can cause wireless interference, resulting in wireless instability. The following figure:
, click to save . As shown in the following illustration:
To do this, try opening the Web page test online.
Possible reasons : distance or obstacles caused by wireless signal is too weak, or wireless interference is more serious, may cause wireless terminal Internet is not normal.
Solution : Wireless terminals and routers can be placed near the point, as far as possible to avoid obstacles, wireless routers and Internet terminals as far as possible away fr
configure the wireless router for each layer. In practical applications, the coverage of indoor AP can only be up to 30 meters.
802.11b actual use rate is only about 40% of the nominal value, the conversion rate of data transfer is about 600KB/S, if set to 64/128-bit WEP encryption, transmission rate will be further reduced, so use more attention to interference problems, as far as possible away from the microwave, cordless phones and Bluetooth equi
can also be threatened by denial of service attacks (DoS), making wireless LANs difficult to work on. Wireless communications are subject to some physical threats that signal decay, including trees, buildings, thunderstorms and peaks that disrupt wireless communications. Like microwaves, cordless telephones can also threaten wireless networks based on the 802.11 standard. A malicious denial of service (DoS) attack by a hacker through a wireless base
layer. In practical applications, the coverage of indoor AP can only be up to 30 meters. 802.11b Actual use rate is only about 40% of nominal value, the conversion rate of data transfer is about 600KB/S, if set to 64/128-bit WEP encryption, transmission rate will be further reduced, so use more attention to interference problems, as far as possible away from the microwave, Cordless phones and Bluetooth devices. If a wireless signal is suddenly fo
, resulting in wireless networks are illegal access.
Tp-link router After network instability troubleshooting three, wireless interference
This step is limited to wireless speed instability.
1, modify the wireless channel: The environment of a large number of wireless signals, if working in the same wireless channel, will produce wireless interference caused by speed instability. The workaround is to scan the surrounding environment and modify the wireless channel to the minimum channel used
450Mbps. If you don't have the right equipment on hand, troubleshoot the next factor. It should be emphasized that the low speed of the secondary router bridging the main router, only relative to the main router high-speed rate is slow, not the internet "slow" the main factor.
Solution to slow speed after WDS wireless bridging third, reduce the number of wireless terminals
When multiple wireless terminals are connected to a router, all wireless terminals share the maximum wireless rate of the
Over the past decade, 802.11 technology has made great strides----faster, stronger and more scalable. But there is a problem in the troubled Wi-Fi: reliability. for network administrators, the most frustrating for them is that users complain about the poor Wi-Fi performance, the coverage is not stable, often drop the line. Dealing with a Wi-Fi environment that you can't see and change frequently is a tricky problem. The culprit of this problem is radio frequency interference. almost any device
receive 2.4Ghz signals.
3, choose the most suitable channel
Similar Wi-Fi networks can interfere with each other as the neighbors ' cordless phones interfere with each other. To solve this problem, the router needs to switch the channel it uses, Miller said. Most routers can automatically switch channels, but manual settings can be a better idea, especially if there is a blind area of the signal.
"If there is a blind area-usually far away from th
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