Have you checked the AP log to make sure it isn’t doing watchdog resets or something? There have been a couple temperature related problems on 450. One was the ADI Communication Failure problem, AFAIK that was only SMs. Also there’s the memory controller issue, I think that’s at high temperatures though, just the same I would make sure you are at 14.1.2 or higher FW version.
Some people have reported water intrusion on 450 APs. I guess if it has water in the bottom which froze, that could do bad things. You say that you swapped cables though, so apparently the RJ45 isn’t frozen into a block of ice. You really should have a spare AP on hand. If nothing else, you could buy a Lite AP, and buy an upgrade key if you actually use it and need >10 subs. I hate buying APs used, you don’t know its history, and you can’t RMA it. It’s like a refurb laptop, you don’t know why the first buyer returned it to the store, did they just not like it, or did it have an intermittent defect? From: Af [mailto:[email protected]] On Behalf Of Kurt Fankhauser Sent: Monday, December 19, 2016 10:04 AM To: [email protected] Subject: Re: [AFMUG] 450 AP dropping Ethernet in cold weather new AP is on order, if I recall I think that this unit showing problems was purchased on EBAY so I am wondering if there was a reason this unit was on Ebay in the first place. On Mon, Dec 19, 2016 at 10:59 AM, That One Guy /sarcasm <[email protected] <mailto:[email protected]> > wrote: wrap the whole radio and antenna in aluminum foil to keep the heat in. seriously though, do you give subscribers any access to the units? If so, I wonder if having them run a bunch of link speedtests could generate enough processing to warm the unit On Mon, Dec 19, 2016 at 9:54 AM, Kurt Fankhauser <[email protected] <mailto:[email protected]> > wrote: Seems that the colder it is the more frequent the flapping is. I doubt its the RJ45 ends since I tried a different cable run on the tower and still showing the same issue. On Mon, Dec 19, 2016 at 10:42 AM, George Skorup <[email protected] <mailto:[email protected]> > wrote: I would try new RJ45s on both ends. If that's not it, then swap it and RMA if it's still under warranty. On 12/19/2016 9:35 AM, Kurt Fankhauser wrote: I have a 3.65ghz 450 AP that was running flawless for over 6 months until we got our first really cold spell last week, temps dropped to near 0 degrees a couple nights back to back and when I woke up one morning the AP was dropping offline. Logged into the Mikrotik 2011 and it showed Ethernet was flapping. (was originally going through a Sync Injector). I had an old FSK AP going through the same sync injector and wasn't showing any problems. I tried switching the ports on the sync injector, changed ports on RB2011, eliminated sync injector and used a standard Canopy SM power supply. Finally I even switched the known good Ethernet cable from the FSK AP to the 450 and the port is still flapping. Won't lock to 10-baseT either. I am thinking at this point that I am going to have to replace the AP. -- If you only see yourself as part of the team but you don't see your team as part of yourself you have already failed as part of the team.
