Static IP address assignments [WAS Re: NIC Settings for IBM Thinkpad T30 / wired & wireless]

[Michael R. Head]

On Sat, 2007-10-27 at 17:14 +0800, SYNass IT Ubuntu / Linux wrote:
> On Sat, 2007-10-27 at 03:04 -0400, Michael R. Head wrote:
> > On Sat, 2007-10-27 at 14:38 +0800, SYNass IT Ubuntu / Linux wrote:
> > > All system's IP here are static !
> > 
> > Ah. Well, you have a very specific configuration. I'm not sure if
> > there's a reasonably way to have automatic management.
> 
> I do not believe, that my configuration is very specific ! ;-)
> I simply prefer the static settings of all connected units in a very
> organised and structured manner !! ;-))

That's fine, but most users are getting their host configuration via
DHCP, so going the static address assignment puts you in a small class
of users. That's OK, but the tools are built around the "easy way".

Also, even if you do want to assign specific IPs to specific hosts, it's
still better to use DHCP and set that assignment in DHCP server.

Nevertheless, it is a valid choice (and sometimes a need) to use static
IP address assignments.

With any luck, I can give you some pointers on using static IP address
assignments.

> > You'll probably have to manually enable/disable your network devices in
> > System/Administration/Network.
> 
> That's generally my attitude !!!
> I decide and switch what to select and where to go !!
> If needed, I prepare respective settings for a special location:
> home docked, mobile island: wired or OFF, or whatever needed !

Cool. I personally find it must simpler just to let the computer figure
out what I want (if I plug in an ethernet cable, I obviously want to use
802.3u, if I'm not plugged into ethernet and a wireless network that I
have used before is detected, I would like to use that ...)

But as I said, it's certainly your choice to do it the other way, and it
should be possible to set the computer up to do it in that manner.

> > > I was especially wondering about the "wireless-essid [my essid]" entry !
> > > If connected wired I do NOT need this entry !?
> > > It's only needed with WL and set with wlan0 !?
> > 
> > Just configure everything with System/Administration/Network.
> 
> Confused !!! How & what ??? The newbie struggles ;-)

Well, open up that administrative tool. It should ask for your password,
because it can modify your system config files. 

Once in, you should see your network devices listed. You should see that
some are "Wireless" and some are "Wired." You may even have a "Modem"
connection available. 

Just click on a connection device that you want to set up, and click
"Properties."

Once inside the properties dialog for the device, you should uncheck
"Enable roaming mode", and you should be able to select "Static IP
address." I trust you can set the needed details (IP address, subnet,
gateway) into the appropriate inputs. If the device is wireless, you
should be able to select the wireless network to which you want to
connect, too.

Once set up, you can separately enable and disable the devices by
checking and unchecking the checkbox next to the device.

Note that you'll probably have to configure the DNS settings in the DNS
tab in the same administrative control panel.

Once you've set all that stuff up, you can save the location by using
the save button at the top of the Network Settings window. If you make
changes, you can later restore the saved settings by selecting it in the
selector and clicking the apply button.

> > > You wrote your interfaces is empty !
> > > Shall I empty mine too ...
> > > ... or do I add the wlan0 data ?
> > 
> > No. Not if you need static IP addresses.
> 
> OK, but I also tried it for once ;-)
> Doesn't work ;-(
> 
> Thanks a lot & cheers, svobi

With any luck, that should get you where you want to be.

-- 
Michael R. Head <burner at suppressingfire.org>
http://picasaweb.google.com/demiri.head.wedding
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