Controller Based WLANs

Why do I need to disable lower data rates on 802.11g band?

This article applies to Access Points within Aruba Mobility Domain.

 

Disabling lower Data Rates of 1 and 2 Mbps helps in resolving WLAN issues such as

  • hidden nodes
  • sticky clients
  • roaming issues

 

Disabling lower Data Rates in guest networks also helps in reducing the consumption of DHCP leases by walk-by, drive-by and parking lot clients by forcing them to be closer to the building to get associated.

However disabling lower data rates cannot be considered as a rule of thumb for all WLANs. This is due to the fact that some clients have connectivity issues when the lower data rates of 1 and 2 Mbps are disabled. The clients that commonly encounter connectivity issues when the lower data rates of 1 and 2 Mbps are disabled include

 
  • Xbox
  • PS3
  • Nintendo Wii
  • Some handhelds devices such as legacy scanner guns and phones

 

Due to the behavior of most gaming consoles, turning off lower data rates in student dormitories might result in huge volume of support calls. The decision to turn off the lower data rates should be based on the ability of the clients in your network to cope with the unavailability of these lower data rates. It is strongly recommended to test the devices that are expected to connect to a WLAN for connectivity issues before turning off the lower data rates in that WLAN.

To disable lower transmit rates, make these changes to the SSID profile

Change the 802.11g basic rates to 5 and 11.

Change the 802.11g transmit rates from 5 to 54

Below figure shows an how to disable lower date rates on 802.11g band:
 
rtaImage.jpg


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Last update:
‎06-26-2014 04:01 PM
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