I need to setup up an enterprise router and a cable modem. The cable company has provided me with a /28, say 220.127.116.11-255 with a gateway address -- 18.104.22.168 -- as part of the /28.
The router has two ethernet ports, one of which will have the cable modem directly attached. I assume the ip address of the modem is 22.214.171.124.
The workstations behind the firewall will have addresses from .242 - 254.
How do I configure the router, specifically the ip address of eth1 to which the modem is attached and the ip address of eth2 which will handle the workstations? Can eth2 be ip-less and simply have a default route to eth1?
Do the client workstations have their gateway set to the ip of eth1 or the ip of the cable modem?
As a note, I've never done this with this kind of setup. Usually, I'm setting up fiber connections such that I have a separate subnet for eth1, usually a /30 and eth1's gateway is the remote fiber switch.
Thanks for any input.