I experienced something very similar to this in Jan/Feb of this year. Client had a Trango link to one of our AP's. At about midday most days the link would turn to crap, and would fix itself at about 3pm. We monitor our AP's using SNMP and graph the RSSI (and a few other things) every 5 minutes. Taking a look at the RSSI graphs showed that between midday and 3pm the RSSI would drop by about 2dB, just enough to make the connection turn to crap. Our solution was pretty simple. We replaced the lower quality d2 Trango unit with a higher quality 5800 unit. The 5800's tend to work with worse signals than the d2's can handle. When swapping out the old unit, I checked out the surrounding area. Immediately in front of the Trango unit was a large corrugated roof, that was dark in colour. It was immensely hot and probably radiating a lot of heat between the hours of midday and 3pm. There's a whole heap of information on various problems like this on the Trango forums - http://www.trangobroadband.com/forum/ . Good luck with getting it all fixed. Dave On 8/2/06, Bill Walker <bill.walker(a)netspeed.net.nz> wrote:
Michael,
The internal Trango thermometer is to monitor the Ethernet chip as in some of the radios it doesn't like getting cold <10C. I've had units running with the internal thermometer upto 48C before with no problems.
I would think the most likely issue is interferance. First watch the rssi, log in to each end and do a 'rssi' on the su and 'su ping' on the ap, to make sure its not fading. Also do a linktest from the AP to see how many dropped packets you get. It could also be an inversion layer, unlikely but possible, that would partially explain it getting worse during the day..
cheers,
bill