@elk Thanks for asking this question on the community forums! The 3448 has 8 switchports built in so you can certainly get rid of that hub. Switch > Hub because each port is it's own collision domain meaning those 3 devices can Tx and Rx full duplex simultaneously at line rate.
As far as configuring the 3448, you can create a VLAN (or use the default VLAN 1) and assign your current LAN IP address to the interface...
Router(config)#int vlan 100
Router(config-intf-vlan 100)#ip add 192.168.1.113 255.255.255.240
Router(config-intf-vlan 100)#no shut
2012.04.05 18:19:40 INTERFACE_STATUS.vlan 100 changed state to administratively up
2012.04.05 18:19:41 INTERFACE_STATUS.vlan 100 changed state to up
Next assign the # of required switchports to that VLAN (by default all switchport interfaces are in VLAN 1) Here I created ports 0/1 through 0/4 to be part of this VLAN
Router(config-intf-vlan 100)#int range switchport 0/1-4
Router(config-swx 0/1-4)#switchport access vlan 100
Next plug in your devices to the ports associated with your "LAN VLAN"
Lastly if those devices need routed to the WAN, create a default route to your WAN interface...
Router(config)#ip route 0.0.0.0 0.0.0.0 ?
atm - ATM
demand - Demand routing
frame-relay - Frame Relay
hdlc - HDLC
loopback - Loopback
null - Null (drop packet)
ppp - PPP
tunnel - Tunnel
A.B.C.D - Forwarding router's address
That makes sense. I knew I was looking at this wrong. I may not be able to try this until tomorrow, but I will report back and rate the reply as soon as I finish this. Thanks!
I had a chance to test it. Works great! Thanks!