I currently have a wireless network setup with 2 1230AG access points. I have started to recieve complaints about speed issues. I have done a little research and cannot determine if it is better for me to add more access points or get antenna's for, and turn on the 802.11a radio on my exisiting access points. any suggestions? I also have 2 follow questions. If I add 802.11a radio's and set it up with the same setup (SSID and Key) as the 802.11g radio's, will everyone who has a/b/g card wireles cards connect to the A or do wireless cards know to connect to the best quality (speed/signal) network? on the other hand, if I add more access points and set them up with the same setup (SSID adn Key) is there a possibility that a majority of the users will connect to the same access point? what i am trying to get at is do wireless network cards have the ability to chose the best access point if they are in range of 2 that are configured identically?
any help or if anyone has a good article about this it would be appreciated.
John, I'm right I promise ;o)
The reason for sending broadcast / multicast traffic at the lowest supported datarate is so that you can guarantee all clients assocaited to the AP can receive the information. If they were sent at 54Mbps, then hardly anybody would receive them, as a client with a 48Mbps or less connection wouldn't be able to interpret the data.
When you use TKIP / AES (for example) you actually have two encryption schemas, one for unicast traffic between AP and client - this is unique per client. Then there is also a group schema for broadcast traffic, having a group encryption key means that all clients receive broadcast / multicast traffic at the same time, and that the AP doesn't have to encrypt the broadcast/multicast packet several times (once for each unique client). The fact that you've got a group key brings us back to the lowest supported data-rate part, ie - everybody needs to be able to receive the inforamtion, so it is sent using the lowest common denominator (ie, data rate).