Make sure SSH is selected as a protocol under RME > Admin > Config Mgmt > Transport Settings for all of the config management applications (i.e. Archive, Netconfig, Config Editor). You may also want to check the "Use SSH for software image upgrade and software image import through CLI(with fallback to TELNET)." box under RME > Admin > Software Mgmt > View/Edit Preferences if you want to use SSH instead of telnet when doing image management jobs.