Clients with problem:
Aksesspunkt no -62dBm… 11Mbps Signal to noise 40dB, Tx/Rx ccq: 100/0 %
Aksesspunkt no -67dBm… 11Mbps Signal to noise 36dB, Tx/Rx ccq: 100/0 %
Aksesspunkt no -62dBm… 11Mbps Signal to noise 40dB, Tx/Rx ccq: 99/0 %
No problem client:
Aksesspunkt no -62dBm… 11Mbps Signal to noise 49dB, Tx/Rx ccq: 100/0 %
Total number of clients is 13, where 10 have problems. All clients is in range from 100meters to 700 meters around the ap with good los.
These clients also use the same hardware compex wp54g/ag with huber Suhner antenna - http://www.hubersuhner.com/sp-rf-ant-prod-db-spa_2400_75_9_0_v_en.pdf
fosben -
Well your config looks ok - I did not see any info from the CPEs that are having issues - do you have or can you get, site survey information from them to post?
Antenna ‘a’ on your wireless card - does it have two antenna ports? If it does - do you have the right one selected?
Have you tried moving your AP channel to another channel? Sometimes, even though the AP survey says there is little noise there can be noise that the AP doesn’t display that is in fact there… So try a different channel…
Just a question, why use 30 feet of coax for your antenna when you could have 3 feet if you mounted the AP next to the antenna? That would save you quite a bit of loss.
Signals are good, so antenna port or cable shouldn’t matter. Yes, eliminating the long cable would get signals a little better, but if they are already good and the CCQ is high, there’s no real reason to do it.
When you are getting about 1 megabit, is there traffic from any of the other clients? Running B mode, you’ll have about 5 total megs to work with. I’m wondering if you have some sort of “hidden node” issue…
What happens if you disable all the clients except one of them that are having problems? Is it still bad?
Well, I don’t know if it would be a hidden node issue or not as it shouldn’t really be a problem if you don’t have a lot of traffic on the links.. but basically it is when the clients can’t hear each other so two of them start talking at the same time (like an ethernet collision) which causes them to both stop and retry. try a google search, you’ll find more info than you care to read about it. I wouldn’t think that it would be the issue with that short of a link, I’m just trying to think of things it could be.
I know people say to run the test “through” the link and not from the boards on either end but try running it from the client’s board to the AP. Any hardware should be able to get more than 1mbps before maxing out the CPU.
Yesterday we mounted an mikrotik client at a customer with a 18dbi antenna. Signal strength we got was 50. Up/down speed was 4mbit/2mbit for 30 minutes, then it suddenly dropped to 100kb/90kb for no reason. Signal stayed the same and so did noise levels and frequency usage. It stayed that low until today where it got back up to 4mbit…