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
419-261-5996 (cell)
[email protected] <mailto:[email protected]>
On Dec 19, 2016, at 11:19 AM, Ken Hohhof <[email protected]
<mailto:[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]]*On Behalf Of*Kurt Fankhauser
*Sent:*Monday, December 19, 2016 10:04 AM
*To:*[email protected] <mailto:[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.
