Can someone tell me how to set up my home network to have fixed IP addresses on my local LAN. I don't need a fixed IP address from Comcast. I just want fixed IP addresses for each of the computers on my local LAN
I have a Linksys WRT54G WiFi router, two computers, a NAS, a network printer that are hard wired to the router and one laptop that connects to my local LAN via wifi. I have Win XP Pro PS3.
What I tried to do was this:
On one of the computers I experimented with changing the Local Area Connection from "Obtain IP address automatically" to "Use the following UP address." I did this by: clicking on Control Panel (Category View), Network and Internet Connections, and then "Network Connections.Then I right clicked on the Local Area Connection 4, scrolled down to the IP Protocol and clicked on it, and then clicked on Properties. I then changed the first option only from "Obtain IP address automatically" to "Set IP address to" and set it to 192.168.1.150. I chose this IP address to be outside of the range of DHCP addresses, which I understand can go as high as 192.168.1.149.
I left "OBtain DNS Server Address Automatically" as is.
I did not make this change in my other computer.
This did not work. I cannot connect to the Internet from this computer.
DHCP can assign from from .1 to .255. You need to go into your router interface (192.168.1.1) and set the router to reserve the address you chose for the computer so it doesn't assign that to DHCP. You will also need to set the DNS server manually on the computer. DNS is assigned by the DHCP server and if you bypass the DHCP you need to set the DNS server as well. Set the DNS to the same settings as you see for DNS on the router.
Some routers can assign DNS servers when not assigning IPs, but I also have a WRT54G and in my experience it doesn't have this feature.
You can login to the router, see what DNS servers Comcast has assigned to it, and then copy these into your DNS server settings. I've had some problems using the router as my DNS server; it's supposed to work, but some types of queries seem to time out.
My guess is that when Comcast decides to make DNSSEC standard, they'll update all the other DNS servers to use it, not redirect everyone to the 75.75.x.x servers. So the current IPs should continue to work.
But what you can do is occasionally check the DNS servers that your router shows, and make sure that your manual configuration matches them.