Adding a second interface to Solaris

Assumptions: 

interface: hme1
IP: 192.168.100.1
hostname for interface: css-host1
netmask: 255.255.255.0

Calculated:

network address: 192.168.100.0

--------
# echo "css-host1" > /etc/hostname.hme1
# echo "192.168.100.1  css-host1" >> /etc/hosts
# echo "192.168.100.0  255.255.255.0" >> /etc/netmasks

At this point if you can reboot it's cleaner. But if you can't...
It is important to follow this order so as not to create strange routes

# ifconfig plumb hme1
# ifconfig hme1 inet netmask 255.255.255.0
# route add 192.168.100.0 192.168.100.1 -interface
add host 192.168.100.0: gateway 192.168.100.1
# ifconfig hme1 `cat /etc/hostname.hme1`
# ifconfig hme1 (to verify settings):
hme1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
        inet 192.168.100.1 netmask ff000000 broadcast 192.255.255.255
        ether 8:0:20:b2:9d:f7 
# ping css-host1
css-host1 is alive
Now try to ping something else on the network
# ping css-host2
css-host2 is alive