Hi, I’m new to Mikrotik and the forum so please forgive any faux pas.
I recently installed a new hAP ax2 router and have noticed over the last few weeks that after ~5 days my WAN connection on ether1 seem to fallback to 10Mbits from the usual 1G.
From the logs I have been able to witness this strange behaviour exhibited within a 2minute downtime where out of nowhere WAN ether1 link is DOWN several times within a few seconds. progressively falling back to 100Mbits and finally 10Mbit.
Configuration was as provided by factory defaults and seems to work very well outside of this one problem which is resolved upon reboot. Happy to provide any further details upon request.
Currently running rOS 7.10.2. I’ve included a screenshot with logs as I’ve not yet figured out how to export a file via the web UI.
I’d appreciate any advice in where to start looking to potentially resolve the issue.
Hi,
- Check or/and replace cable
- If there is still a problem GOTO 1
Less likely but It also may be any ISP cabling from street to ISP modem??
Yes, … could be. Or it may be incompatibility in speed negotation … try to turn it off, choose 1Gb and watch if connection would work stable.
After waiting several hours following the fallback to 10Mbits earlier today, refreshing the auto-negotiation option in the web UI caused speeds to revert to 1Gbps. I know for a fact that rebooting the whole router also resolves the issue. It crossed my mind that I could automate power cycling the port or performing a reset altogether via a script running on the router itself in the following cases:
- based on parsing values from the speedtest.net cli output
- checking the negotiation rate
However that seems like overkill. It doesn’t help that I can only test potential solutions once every 5 days
I’ll replace the patch cable to the ISP fiber modem and see whether the issue reappears.