On 18.05, Heino Walther wrote:
... Autologout: System Console being disconnected due to inactivity SP NODE-01*> Autologout : Session being disconnected due to inactivity
So it doesn't seem like an Ssh protocol problem, more like ONTAP is deliberately terminating your session due to apparent lack of use.
Here's my random thought, use ssh with the "-n" flag to avoid ONTAP allocating a terminal. See man ssh.
Might help :-)
Yours, Robb.