On Wed, Jul 23, 2014 at 05:26:03PM -0500, Scott Lambert wrote: > On Mon, Jul 21, 2014 at 05:30:25PM -0600, Craig Baird wrote: > > A few months ago I upgraded a couple of x86 routers to RouterOS 6.x, > > and have since had something strange happen with both. Out of the > > blue, the routers will get into a state where one ethernet port cycles > > between no-link and 1Gbps about once per second or two. Rebooting the > > router fixes the problem. This does not happen frequently. So far > > it's been about every 5-10 weeks. One of these has 6.9 and the other > > is running 6.12. They are Axiomtech NA-820 units with Intel GigE > > ports. I'm assuming this is a 6.x problem since these units never had > > an issue until I upgraded them, and now both of them have done this at > > least once. > > > > Anyone know if any of the latest ROS builds might address this? > > I have no cure, but I have been seeing similar issues with one of my > PowerRouter 732s which I believe is the same hardware. The UPS between > it and the grid is not terribly great. It is ancient and pre-dates our > use of the site. > > I believe I only see this problem when a power event happens. One of > the ports will start flapping at about the frequency you mention. This > is always when a storm has come through the area, 50 miles from me. > > A reboot of the PR732 sorts it out immediately. I think the power > browns out during the transition and something comes unglued in the > ethernet device. The PR732 runs fine on the UPS after a reboot. I > don't know if it's a driver issue or a hardware issue. > > I originally installed the PR732 running RouterOS 5.x with a small but > new UPS. The UPS died and the person on-site plugged us into his UPS. > Some time after that is when we started noticing these problems. I > cannot remember if we had upgraded to RouterOS 6.x before the UPS died > or after.
Oh, one more thought. We also have a second PR732 in a different town with a good UPS running the same firmware. We have not seen the port flap problems on it. The configurations of the two routers are nearly identical. They both have their Ethernets connected to one Netgear switch at each location. The switches are the same model. -- Scott Lambert KC5MLE Unix SysAdmin [email protected] http://cqnewsroom.blogspot.com/2013/03/just-like-twitter-only-more-advanced.html _______________________________________________ Mikrotik mailing list [email protected] http://mail.butchevans.com/mailman/listinfo/mikrotik Visit http://blog.butchevans.com/ for tutorials related to Mikrotik RouterOS
