[Ham-Computers] How do I set up "fixed" IP and submask etc on XP, Vista a...

[WA5CAB at cs.com]

Phil,

I think that you did get that router from me.  And a few weeks ago when our 
BEFSR81 failed, I sure wished that I hadn't sold both of the 4-ports.  :-)

Anyway, the short answer is that you can't assign fixed IP addresses to the 
computers.  The longer answer is that you can but you will lose access to DSL.  
The longest answer is that you in effect can but it's a pain.

You can get into the LAN Connection properties on each machine and change the 
IP Properties from "Obtain an IP address automatically (Dynamic assignment) 
to "Use the following IP address" and then enter what you want.  Unfortunately, 
when you do that it also forces you to enter the information for the DNS 
server.  The latter information is passed to the Router by your DSL or Cable/DSL 
modem.  The router then passes it to the workstation with the IP address.  If 
you set the connection to Static this doesn't happen and you won't be allowed 
an Internet connection.  

Some routers have a feature called something like IP Reservation (the D-Link 
AirCard Modem/Router that we have does).  But the Linksys router you have does 
not.  I know this because I have one machine here that I must know the IP 
address of so that I can program it into the Xerox scanner.

I didn't exactly understand why you needed a machine or machines with known 
IP address but I can think of two work-arounds.  

The first is to simply determine the IP address that you need to know at the 
time that you need to know it.  Normally if you have all of your machines up 
and reboot the router, or reboot the router and then start the computers one at 
a time, whatever address they end up with they will keep it until the next 
time the router or computer is rebooted.  To determine the IP address of the XP 
machine, open a Command window and type IPCONFIG and press ENTER.  It should 
show you the address and some other stuff.  I've no idea how to do that in 
Vista.

If simply knowing the IP address won't work for you (as it won't for me 
because of the time it takes to reprogram the Xerox), the following will probably 
work with the Linksys router and computers you have.  Open the Command window 
as above and type IPCONFIG to see what the current IP address is.  Note the 
settings (numbers) assigned to Subnet mask and to Default gateway.

Then open the Control Panel and double-click Network.  You will see at least 
two lines or two icons (depending on how you have set up View).  One is Add 
New Connection.  One will be Local Area Connection.  Double-Click the latter.  
In the window that comes up, click Properties.  Find Internet Protocol 
[TCP/IP], highlight it and click Properties.  Click "Use the following IP address:".  
Enter the IP address you want, and also the Subnet mask and Default gateway 
noted previously.  You can leave the DNS server lines empty.  Click OK.  Click 
OK, and wait until Activity ceases.  Return to the Command window and run 
IPCONFIG again (UpArrow should re-type it for you) to make sure you see what you 
want.  If not, go back and do it again.  Note that some of the information shown 
the first time you ran IPCONFIG will have disappeared.  With the computer set 
as you want it, go back to Local Area Connection and repeat the previous 
steps except click "Obtain an IP address automatically".  Click OK twice, wait for 
Activity to cease, and re-run IPCONFIG.  Hopefully you will see that your ISP 
related information is back but that the computer's IP address has remained 
the one that you want.  This has worked here with several Linksys B-Series 
routers through several different system boards over the past ummh years.

In a message dated 10/29/2008 1:14:32 PM Central Standard Time, 
ko6bb at sbcglobal.net writes: 
> It looks like "BEFSR41" (very tiny print, and it's mounted under the 
> workbench).  In fact, I think I may have bought it from you a few years ago. 
> 
> . .
> Phil (KO6BB)
> 
> al Message ----- 
> From: WA5CAB at cs.com
> 
> What model of Linksys router are you using?
> 
> In a message dated 10/29/2008 12:43:46 PM Central Standard Time, 
> ko6bb at sbcglobal.net writes:
> 

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480
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