I have mikrotik RB450G. but i have one big promlem with either link down/up (in 2 sec) . I have connected 2 AP . One is Nanostation M2 and the second is AirMax Sector 2G-16-90 with Rocket M2. Nanostation M2 works very good - no one problem but when i connect Airmax - i have the problem with either link down/up.
Either link down /up is the same as in the attached file

Could be a fault with your cable and connectors or the Airmax device.
Best to test them all. In the mean time you could try forcing that Ethernet port to 10mbit.

What type of POE do you use?

Have changed Airmax antenna to Nanostation M2 - the problem has disappered!
it's a Mysticism!!!

no it seems that mikrotik devices(seems that devices 4xx) have problem with big packets(nstreme, airmax), this same happens to me between to devices, when one is with nstreme enabled.

no it seems that mikrotik devices(seems that devices 4xx) have problem with big packets(nstreme, airmax), this same happens to me between to devices, when one is with nstreme enabled.

Thank you , but i'm sorry what is it nstreme? What must i change ??? Because i don't understand

nstreme is something like airmax, it transfers larger packets than regular a/n....

nstreme is something like airmax, it transfers larger packets than regular a/n....

So On which antenna should i switch off it?

nstreme is something like airmax, it transfers larger packets than regular a/n....

May be someone have idea how to coordinate these two antenna (AP). What do i need to change at the Rocket M2? or anything at the mikrotik?
Look forward to your reply

But both devices have Airmax (as nanostation M2, and Rocket M2)

I solved freezing on ethernet putting switch between to routerboards. It now works(later I plan to change it for alix board)