I’ve a MT with Compex card, had others in as well. (Just put new one in today as well) Our area is quite busy, but with 15 clients on, about 5 is bad. After finding an ‘empty’ b channel, things are better, but still get a timeout on pings every 10 or so pings. That cause email client to ‘lock up’ and time out, so they are prety ticked off by now as I cannot seem to get it sorted out. The 5 clients are the furthest (within about 500m of each other) although it’s only about 2km with a 15dbi omni on AP and 12dbi yagi/18dbi patch antennas on clients. The pings hover on 7-15 and then timeout once or twice before carrying on merrily.
On AP:
CCQ=between 78 & 100
AckTimeout=193
NoiseFloor= -102
On Bad client under wireless/registrations:
Ack=30
SignalStrength=-65
TX Signal=0
SignalToNoise=40
Tx/Rx CCQ=100/0
Use b, no WEP, just MAC filtering.
What is optimum settings pre/post 2.9.25, preamble, etc. etc that I can try to improve?
I’ve ordered a 7dbi HP omni to see if HP will be better but some experienced advice might just do it. Don’t feel like going to all 15 clients to rotate antennas…
Have you tried using 5 OR 10Mhz Channel Width to escape the interference?
Also try setting your Data Rates at both the AP and Client Side to only use lower rates, sometimes I find that I can create a better experience for my clients by only allowing 5.5MB for example on Supported Rates B and Basic Rates B.
While in Supported Rates G & Basic Rates G I will enable 6-18MB.
Of course you will need to toy around with these settings somewhat and run bandwidth tests between an AP and Clients Devices to see what actually does you best for throughput.
But rule of thumb taught to me at MT Training was lower rates provide best world scenarios for clients speed most usually.
Your ACK on distant client seems to small. it should be higher ( over 56 at more than 1 km.)
At least this is for me.
Try changing client antennas with more directive antennas, to isolate interference. It should do better. I tend to use pre-2.9.25.
I get ping loss ussually on crowded areas, with high interference, for clients with signal worse than -80db.
Maybe this helps.
Also, see if connecting only clients from one manufacturer helps (d-link, senao, etc.)k
It would seem that most of Senao would allow channel width adjustments VIA the country you select to operate within??
As for D-Link I think those are fixed 20Mhz US, but I would definately check with D-Link to see if their equipment allows channel width variants.
Thanks, which country codes support which channel widths? And will it then auto-detect whatever I set on the AP or must I change country codes on all clients everytime I experiment with different setting? That might be a problem…
Jorj, I just checked and the ack is still on 30. Maybe it’s not as far as 2km straight then… It was just a wild guess with some excageration built in to not underestimate.
I know US supports 2Ghz-10Mhz, 2Ghz-5Mhz, 5Ghz-10Mhz & 5Ghz-5Mhz channel widths for sure, otherwise you would just need to experiment by selecting other country codes to then see if the unit supports those channel widths you choose to use.
I don’t suggest you experiment too much with a live AP (clients are going to lose connectivity).
Better if you setup a second AP to find the best settings with a remote Client Device that one of your partners can monitor and report back to you from while you are say about 5Kliks from the AP you are experimenting with.
Only once you have found what Country Code to use is when- you will be required to setup your client devices identical to the settings of the AP serving them.
It’s always a good rule of thumb to open a New Terminal whilest in WinBox making new settings in any MT device and enter into SafeMode.
That way if you make a bad setting the unit will revert to its last settings and re-boot still allowing you access to the device.
Of cource, once you have made new settings that work as you need them to you must exit SafeMode to enable a save to the configuration. Ctrl + x is the method of enabling and disabling SafeMode.
