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I am looking for a way to get to the bottom of a wireless issue for a small clinic that I am trying to troubleshoot. The symptom is that all of the doctor's Lenovo wireless tablets are loosing wireless connection for brief periods of time throughout the day. I can replicate this loss with a HP laptop, although the outage isn't as frequent as the Lenovo's. I brought my dell laptop out there and I lost connection for brief periods.
Details:
- Two ubiquity AP's with roaming turned on
- All wireless machines are within less than 30 to 50 feet of either Access Point
Troubleshooting
- I've replaced the Access Points..same issue
- I've turned one off and then the other to see if there is contention between the two. Wireless dropping is not specific to just one.
- I've manual set them both to different channels instead of the 'Auto' settings, which is supposed to set it at a different channel.
- I've set ping plotter to run continuously and I can see intermittent disconnects on random devices...seems to be more prevalent during business hours...occasional blips on weekends and evenings.
- I went there with wifi analyzer on my phone and connected to their AP. I didn't see a degrade in the signal strength when I was there.
If anyone has further suggestions...let me know.
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Total posts: 4 (Showing page 1 of 1)
Back to Ubiquity.
by R. Proffitt 
- 1/28/13 1:06 PM
In Reply to: Ubiquity wireless Drop by bclanton40
Keep in mind this is a proprietary solution and being WiFi it will drop. That is, I find folk jump into WiFi networking and discover this or that but if you want it not to drop, you get it wired.
The more devices you can wire gets more devices off the WiFi which is a limited resource. Talk to others that field networks and you should hear this common piece of advice.
And back to Ubiquity if you feel it's defective.
Bob
Ubiquity
by bclanton40 - 1/28/13 1:38 PM
In Reply to: Back to Ubiquity. by R. Proffitt
There does seem to be something specificly not right with this site...I set up a Ubiquity at my place of business and receive ping times within 20 to 30 milliseconds with no disconnects for a full 5 hours. I am in relative proximity to the AP as the doctors are at the clinic.
This clinical site, the ping range is to over 150 with periodic drops..averaging 77 ms to 120, with periodic drops every 30 minutes...every once in a while...all devices will loose connection.
The clinic is in a clinical building and I've asked around if there is any xray equipment or anything like that, but it is an internal medicine type of facility...not major scanning equipment or anything apparent that would emit EM interference.
I figured that I could see something with the 'WIFI' ap that I had on my Droid...but the signal didn't degrade...as far as the app could tell. But, it isn't like it is an Oscilliscope, so I question its accuracy.
The more devices, the more trouble.
by R. Proffitt - 1/28/13 2:18 PM
In Reply to: Ubiquity by bclanton40
I tried to keep this simple and will continue to do so. If the product doesn't work, then you configure as you know how or call for help. My help is from a long history including writing router code nearly 2 decades ago.
If you feel the Ubiquity should work then you take it up with them. Here I've seen and done too much to think this system is that good or for mission critical systems. I write apps and over the years tailored them to allow for network drops. That is, whenever possible I close my TCP/IP connection and open it on demand. That way I don't mind a drop.
Your newer programmers tend to open connections and files and hold them open throughout the app's life. If they get a drop the app crashes. You can bet I take a dim view of that style.
Bob
Total posts: 4 (Showing page 1 of 1)
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