/etc/hostname.ce0:1
2. add the hostname and virtual IP to /etc/hosts
reboot or Sol10 restart service by # svcadm restart svc:/network/physical
3. or by Command
ifconfig
ex : ifconfig ce0:1 plumb
ifconfig
ex : ifconfig ce0:1 10.67.1.141 netmask 255.255.255.0 broadcast + up