topic Re: 802.11a problem in Wireless

802.11a problem

SDWorx_2 — Sun, 04 Jul 2021 15:44:04 GMT

Hi,

I have a 1200 AP with 5GHz module and AIR-CB0a client adapter in demo.

This all works fine (except coverage is not that good). But what I see is that when I walk arround and enter a zone with only 802.11b AP I loose my connection! So the card does not seem to switch to 11Mbit.

I saw in mij profile (ACU) that my radio Channel is set FIXED on 36.

Anybody any idea?

TNX

Koen Kips

Re: 802.11a problem

dave.reid — Wed, 28 May 2003 15:01:15 GMT

11a devices operate at 5GHz, 11b devices operate at 2.4GHz - they will not work together.

The speed of the 11a link can only decrease while still associated to the 11a access point.

Re: 802.11a problem

derwin — Thu, 29 May 2003 00:04:22 GMT

Dave is correct the dual band option in a 1200 gives you 2 radio networks they are separate and you can not roam from one to the other as they are completly different radio bands

It should also be noted the range for 802.11a is approx 1/3rd of 802.11b due to the higher frequency and AP placement is more critical

Re: 802.11a problem

SDWorx_2 — Mon, 02 Jun 2003 14:48:04 GMT

Thanks for the clarification.

So I was wrong that the 5Ghz client is backwords compatible with the 2.4 GHz.

Regards

Re: 802.11a problem

derwin — Mon, 02 Jun 2003 20:28:33 GMT

Thats correct 802.11a is not backward compatiable with any other standard

802.11g which operates in the 2.4ghz band but gives a dat rate of 54Mbps is backwards compatiable with 802.11b (11Mbps)