switch

Hi all

Just bought a switch and it is the first time I have had to handle
network stuff like this and need some help. the switch is a Planex
SWP-0224FP Layer2 Intelligent PoE Switch.

I have a router which has three nics, one for the outer (fixed IP) one
for the LAN and one for the DMZ.

The LAN IP nic is set to 192.168.0.1
The DMZ is set to 192.168.10.1
And the router (outer IP) is 192.168.100.1

Now with this switch I was hoping to use it for both the DMZ servers and
the pc's on the LAN...

The below instructions tell me to set the IP of the switch.
But I really am not sure what point (g) means...

So which ethernet cable to I plug into the main switching port?
The Lan interface or the DMZ?

Secondly shoudl I setup VLAN to properly separate both networks since
they use the same switch??

Sorry for the basic questions but have been dumped with this job and
have no idea...

Thanks

f) Type “net interface ip sw0 
   
   
    ”. For example, if your switch IP is 192.168.10.1 and the network mask is 255.255.255.0. Then you should type “net interface ip sw0 192.168.10.1 255.255.255.0”. g) If the switch has to be managed across networks, then a default gateway or a static route entry is required. Type “net route static add 0.0.0.0 
    
      0.0.0.0 1” as your default route entry, as shown in Figure 5.