Well, I'm not really concerned about loops on trunk ports but access ports (i.e. student loops switch port 3 with 5 because they mixed up the patch cables - even going as far as directly connecting the same cable to 2 ports of the CRS326), which doesnt get detected by loop-protect either as soon as ...

@sindy thanks, that just affirms my doubts with mikrotiks implementation of loop-protect vs. what I'm used to from HP. Guess we have to drill our students even more to not connect more than one cable unless they're 110% sure their config is right and otherwise hope the upstream switches catch the lo...

STP and the loop-protect feature are 2 different ways to prevent loops and due to certain circumstances I *cant* use any kind of STP to detect loops, only loop-protect works.

Using the loop-protect feature as described in https://wiki.mikrotik.com/wiki/Manual:Loop_Protect in the /interface ethernet sub-menu. The manual says it's recommended to use STP when the interfaces are added to a bridge but not that it wont work at all the moment VLANs come into play. Enabling loop...

Any kind of STP is not an option, loop protection implemented in the old HP switches works though. Simply enabling loop protection on the old HP switches just works without any issues, even when the ports are configured in different VLANs. On the CRS326 loop-protection just doesnt do anything the mo...

Hello, I've got my hands on a few CRS326-24G-2S+ (budget is tight at the end of the year...) running 6.45.7 to replace some old (f)ailing HP 1GBit switches in our labs but I'm having issues with the mikrotik implementation of the loop-protect feature. loop-protect only works properly when a port is ...

Final conclusion for me - switched to fiber, removed S+RJ10. If I want 10GBaseT I'll get a switch with fixed 10GBaseT ports. Besides running hot as hell (the switch is in the attic and it isnt even summer yet) I had issues with multiple modules just stopping receiving traffic in the CRS328 randomly ...

All right, new discovery: my r2 modules support jumbo frames, but only if they link up at 10G. I only have SFP+ NICs (ConnectX2) to play around which I've used with fibre modules and I was using the S+RJ10 in the CRS317 to provide 1000BaseT connections to the rest of my network where a ancient Zyxel...

I got 4 Rev 2.11 here (shipped 4 weeks ago, manuf. date Jan/2019) and neither one seems to support Jumbo Frames in either a CRS317 or CRS328. Jumbo frames work nicely if I plug in an ancient 1GBit SFP I had lying around or a fibre SFP+ module instead. I'm rather annoyed about not being able to use j...