Port Mirror causes port to stop

Hello!

I’m trying to setup port mirroring on a 750GL.

Essentially… As soon as I setup the rule for something simple like…

Eth2 = Mirror Source
Eth3 = Mirror Destination

Eth2 will immediately shutdown and the device connected to it will lose all connectivity.

Also.. while trying different things.. I setup a

Eth2 = mirror Source
CPU1 = mirror destination

and then…

CPU 1 = mirror source
ETH3 = mirror destination.

And now… I’ve lost all access (can’t login via Winbox or the Web UI).. however.. in the 2nd scenario.. the device is still functioning as a switch.

Any thoughts or ideas?