How To Tell What Version Of SMB Is Being Used?

Hi there,

I recall from a while ago, I used a command that enabled me to see what version of SMB (CIFS/SMB1/SMB2) active mounts were using.

For the life of me I can't remember the command nor can I find it anywhere online.

What is the command line command to display active mounts and their negotiated connection method in OS X?

Thank you for your help in advance.