My gut tells me I have far more of this port flapping problem on RB2011 than any other Mikrotik platform, is it just me?
What happens if you pass it through a small Ethernet switch before the 2011? I am considering replacing all my rackmount 2011 with 3011, unfortunately there isn’t a desktop version. I’ve had good luck with RB850Gx2 but it only has 5 ports. When we first started deploying 450 we had some port flapping problems, I think related to sync over power. After some 450 firmware updates and replacing WB surge protectors with GigE HV versions, I don’t think we see that anymore. I do see it happen with the 2011 routers and other equipment like some Exalt licensed radios and some AF5x radios. That’s why I’m suspicious of the 2011. On the other hand, we could just have some cables with water in them at those sites. From: Af [mailto:[email protected]] On Behalf Of Kurt Fankhauser Sent: Monday, December 19, 2016 9:55 AM To: [email protected] Subject: Re: [AFMUG] 450 AP dropping Ethernet in cold weather 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.
