S4048-ON Default Gateway

I'm trying not to be confused. LOL

As I understand it, there is no "Default Gateway" on the S4048. So to get the same result, assuming my firewall is 192.168.3.2, is it as simple as:

#ip route 0.0.0.0/0 192.168.3.2 255

The "255" would be the preference so it would try all the internal routes before dumping to 192.168.3.2.

Or am I about to make a mess? LOL
Thanks in advance!