I have 3 different APs facing a town. Each AP is on a different channel. 2 of the APs are B/G mixed mode and a 3rd AP is set for G-only.
My3rd AP (G-only) AP has the following setting ( note I have tried different settings to no avail)
2.4GHz-only-G
Data Rates Supported = 24 (only 24 is checked)
Basic rate = 24 (only 24 is checked)
TX Power — 6 and 24 is set to 30 — all other tx power rates are set to zero
80 clients (plus or minus 40 clients)
If I am correct - this AP should only be talking 24 meg and listen at 24 meg - and the AP is not in protect mode The problem: I still see on average about 17 clients talking to my AP at 1-meg client up.
Why is my Mikrotik 433AH v4.11 taking client connections that are 1-meg-up. Those 1-meg up clients (24 meg down) should not even be connecting to my G-only AP.
Is this a bug?
I would think A G-only AP with mixed mode B/G clients would only talk and listen to clients at G-only rates. Why is my G-only AP talking to clients at G rates but letting clients talk to my G-only AP at 1-meg B rates.
I suspect a heavy uploader to my G-only AP who has a 1-meg rate uplink may be degrading the potential performance of my G-only AP.
Has anybody else seen this? I have been able to duplicate this on many Mikrotik APs.
You should try to change the Basic Rates A/G 6 Mbps only , and the Suppport rate a/G choose 6,9,12,24 Mbps , then let see the different . In my opinion if you configure basic rate and support rate with the same value 24 Mbps, then your client CPE working so hard to gain potential best rate . TIA
I tried that also. Even set APs for G-only 6 meg only and I still get some distant remote B/G-mixed clients associate with a 6-meg G modulation rate down and 1-meg B modulation rate up.
I see the problem you are having. I think, it’s probably one of those implementation quirks. I agree it should have been filtered by the driver.
Tried removing all 11b supported/basic rates?
You could make MikroTik aware of it.
If it’s a closed network then perhaps use hidden SSID?
It’ll stop random laptop clients from trying to connect. Part of the real problem is the client/station implementations that try to connect to networks it’s none of it’s business being connected to (perhaps windows trying to figure out whether it’s WEP or WPA encryption(???).
the B speeds are still available in G mode. The “B only” “G only” settings pretty much mean it cannot have an 802.11B client connect at B speeds to a “G only” AP.
I think it is choosing between DSSS and OFDM. DSSS seems to work through interference better, OFDM has better jitter.