if you can't ping it then check your network settings (gateway\dns\ip) whast the output of "ifconfig -a" and "rdfile /etc/rc". Is it interface on a particular vlan?
This happens every so often...the VSIM thinks someone is logged in and 7-Mode allows only ONE connection at a time. From the VSIM console, type "logout telnet" then try ssh again and let us know it works...or not.
Use the secureadmin commands to set up and enable the secure protocols, SSH and SSL.
ex : secureadmin setup -f -q ssh
The -f option forces setup to run even if the SSH server has already been configured.
The -q option is the non-interactive mode for setting up SSH. See the na_secureadmin(1) man
page for more information
After you have set up SecureAdmin to enable SSH and SSL, the following options are set to on:
options ssh2.enable (if you enabled SSHv2 during SecureAdmin setup)