A friend with TWC (roadrunner) says they told him he has 4 static IP addresses with his residential service. Why they sold him this, I don't know. Gullibility, probably.
He has some cheap off-brand wireless router hooked up to it and appears to be an out of the box config - DHCP to the cable modem, and the cable modem gives him the first static IP address assigned to him. The router then dishes out 192.168.x.x addresses to his 2 machines.
He has been using the same TWC-assigned IP address for 2 years. He wants to change IP addresses to one of the other 3 on his list (I think he's on a block list). Is that list softcoded into the cable modem? Or is the modem just contacting the head end tro figure out which IP's is supposed to be using. And if the former, how you would change the order of the IP's it assigns?
I seem to recall some fancy SNMP software was required, but that may have been a crazy dream I had 15 years ago. I have never used a cable modem and don't know shit about them. And I don't claim to be a networking guru either (unless it's UUCP!).