I've got an issue across all 4 of our v3240 filers (2 HA pairs). I am connecting to them via ssh, using public key encryption to authenticate to root account without any isue. I can work with the filers for exactly an hour, before I get booed out of my ssh session with "Server unexpectedly closed network connection". This happens with both Putty and Kitty ssh clients, and I have disabled all the autologout options i can find, and set all timeouts to over 60mins, but it is still disconnecting me. It happens regardless of activity within the session, sometimes I am in the middle of entering commands when it kicks me out.
toaster> options autologout
autologout.console.enable off (value might be overwritten in takeover)
autologout.console.timeout 540 (value might be overwritten in takeover)
autologout.telnet.enable off (value might be overwritten in takeover)
autologout.telnet.timeout 2880 (value might be overwritten in takeover)
No, there is a WAN link between myself and one pair, but I am in the office next to one datacentre with an affected pair. There's no firewall configured on my workstation either. I'm certain it's the filers that are disconnecting me, as I often open up 4 KiTTY sessions to each of the filers one after another. It takes me a few seconds of clicking to launch each session in turn, and one hour later, I can see the disconnect messages appear with the same few secconds between each session.