WEP WPA 11g 11n 54M Wireless Rate

Failure phenomena:

The two SSID emitted on the same AP, but the two SSID is in a different network interface, but it is found that the user will have a 54M rate when connected to the SSID1, but if the client is connected with SSID2, then the 11n or 11a rate will occur.

Problem Analysis:

First of all, see why all users Only connect to SSID 1 will appear 54M, because the network protocol is connected to 11a, and the connection to the SSID 2 will occur after the rate of 108m, because the network protocol with 11bn; So the question is why SSID 1 would be 54m,ssid. 2 would be a 11bn protocol.

See the WLC's configuration for 11a/n 11b/n without any problems

Then the analysis found that the two only difference is the authentication method:

SSID 1 is using WEP SSID 2 with WPA2.

So the query concludes:

To achieve the N rates, you need the SSID to be configured for Wpa2/aes or open.  No wpa/tkip, no WEP etc. Also WMM needsto be enabled, which it should is by default.

With the above should is able to get up to 144Mbps on the 2.4GHz, and if your bond the 5GHz you can get up to 300M

Later found online:

In the three encryption tests for WEP, WPA, and WPA2, the main reason for the significant change in the transmission rate of wireless networks is that the IEEE 802.11n standard does not support high throughput rates for unicast ciphers with WEP encryption (or TKIP encryption algorithms). In short, the 11n product does not support the WEP encryption method or WPA-PSK/WPA2-PSK encryption method TKIP algorithm, if the user chooses these encryption method, the wireless transmission rate will automatically drop to 11g level (theoretical value 54Mbps, single-threaded actual test results 20Mbps around, Multithreading actual test scores of about 22Mbps). That is, if the user is using 11n Wireless products, then the wireless encryption method can only choose WPA-PSK/WPA2-PSK AES algorithm encryption (compared to WEP, and the TKIP algorithm, higher security), or the wireless transmission rate will be greatly reduced.

Conclusion:

such as WiFi connection speed only 54M, then see what protocol connected 11a 11n 11bn; Because 11bn and WEP authentication are conflicting, it is necessary to use WPA/WPA2 to support N .  

This article is from the "Sulan Network" blog, so be sure to keep this source http://zhangfang526.blog.51cto.com/8588740/1729561

WEP WPA 11g 11n 54M Wireless Rate