Just an update to everyone on this. I replaced this AP with a brand new one and the problem went away. Used same existing cable and everything in place.
On Mon, Dec 19, 2016 at 7:23 PM, Kurt Fankhauser <[email protected]> wrote: > I am running firmware 14.2.1 and also there is no water intrusion on the > Ethernet cable, I have already checked the ends of the cable and they look > brand new. Cable are less than 100 feet. > > On Mon, Dec 19, 2016 at 5:04 PM, Timothy Steele <[email protected]> > wrote: > >> Are you sure it's the cold and not water from the ICE getting into that >> cable or you cable is longer then 300ft? >> >> On Mon, Dec 19, 2016, 12:52 PM George Skorup <[email protected]> wrote: >> >>> Yes, the FPGA memory controller problem. We had tons of issues with >>> that. But it didn't seem to do anything with the ethernet. Mostly sync and >>> registration issues. But if the memory contents are unstable, I guess >>> anything can happen. I remember telling Aaron we had the most problems >>> right after the sun went down and then sometimes just after the sun came >>> up. It has to be temperature related! Sure nuf. >>> >>> 13.2.1 and earlier has the broken FPGA image. OK, not broken, but not >>> able to handle the insanity. Use 14.1.2 or 14.2.1/15.0.1. >>> >>> >>> On 12/19/2016 10:39 AM, Mark Radabaugh wrote: >>> >>> There was a issue with 450’s rebooting in cold weather that was >>> addressed in recent software versions. If you are not running current >>> software I would start looking at the release notes to figure out where you >>> need to be. >>> >>> The issue I believe was traced to a hard to locate instability in the >>> internal logic power supply when the CPU load changed that manifested only >>> under low temperatures. Cambium was able to reproduce it reliably in >>> extreme cold testing (like -40C) but it was still a very difficult item to >>> track down. >>> >>> >>> Mark Radabaugh >>> Amplex >>> 22690 Pemberville Rd >>> Luckey, OH 43443 >>> 419-837-5015 x1021 <(419)%20837-5015> >>> 419-261-5996 <(419)%20261-5996> (cell) >>> [email protected] >>> >>> On Dec 19, 2016, at 11:19 AM, Ken Hohhof <[email protected]> wrote: >>> >>> 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] <[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]> 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]> 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]> >>> 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. >>> >>> >
