I’m testing a mixed 5GHz 11a / 11n Setup.
When setting manual Data Rates at the AP (Mode=5GHz-a/n)
a client which is set at Mode=5GHz does not connect.
I enabled all Supported 11a Rates and tried Basic rates
only 6MBit or all Rates at the ap → no connect
Changing the client from 5GHz to 5GHz-a/n gives an
immediate connect.
ROS 4.5
My fault: Have to disable “HT Basic MCS” to allow 11a clients to connect.
Lets see if I understand.
You had to disable HT basic rates to get A clients to connect to an A/N AP?
You shouldn’t have to. I don’t.
Yes. I have to do. As A-client does not support HT Rates he do not
connect to a A/N AP with a HT basic rate set.
Looking at the documentation this is the correct behavior.
Dont know why it does work for you. May be your client has
a 11n card with default data rates?
I’m with Oldman on this. We don’t do anything special to connect an A radio to a newer N card as long as the N card is running mixed mode. I suppose if the N card was set to N-only mode you might have this problem, but you wouldn’t do that if you had the intention of connecting legacy A clients. Perhaps I’m misunderstanding something about your application.
-Nelson-
I’ve got an AP I’m testing with an R52 as the A client card, my laptop with a CM9 and a 2 test CPE with R52N.
All connect fine with 4.6 or 5 beta in A/N mode without messing with the basic rates at all. The N AP in question is running R2n and R52nH.
When you set your AP to B/G, do you have to disable G basic rates for a B client to connect? I never have, though I don’t have much B hardware to begin with. Most of it has long since gone.
I test with 2xRB411/R52n (ROS 4.6). AP set to 5GHz a/n and client to 5GHz a.
Using manual data rates at the AP and selecting a Basic Rate HT MCS 0
the client disconnects and do not come back. Client is set to default
data rates.
So as expected Basic Rate means the client has to support this rate to connect.
Why not just leave the rates at their default on the AP? Then this problem wouldn’t exist, correct?
I seem to recall having no problems connecting to an AP in a/n mode with a client in a mode, but then again I don’t change data rates on the AP.
On loaded APs you’ve to limit data rates to reduce latency problems.
Also to reduces the work load for the AP especially for those that handle anough clients. I use to have cpu=90-100% with a particular AP when over 35 active high data rate clients are conneced, when i reduces their data rate to just below the best, everything comes back to normal and everybody working fine.