Assigning ip on boot up

[PaulStat]

Hi Guys,

I'm wanting my ubuntu setup to 'get' it's IP details during bootup, i.e. before login.

This is so that I can logon via NX from my laptop without having to logon via the ubuntu machine first.

Cheers,
Paul

[Irithori]

Two aproaches:
a) Assign a static IP to the ubuntu machine.
This can be done with the NetworkManager
b) I *assume*, there is a dhcp server in your network.
You can probably provide it the MAC address of your ubuntu network card
and configure it, so that a dhcpm request with that MAC will always get the same IP as a dhcp response

[PaulStat]

Hi Thanks for the reply, sorry it took me so long to come back to you been a busy 5 days.

Anyway to your answers

a) Static IP is already assigned, it's just that it doesn't 'assign' it until I actually log in.
b) In other words always give a certain MAC address the same IP? Not an issue as the IP is static like I mentioned above.

I should of mentioned I have already I've got a static IP, and I've modified /etc/network/interfaces to assign all the necessary details to wlan0

auto lo
iface lo inet loopback

auto wlan0
iface wlan0 inet static
wireless-essid xxxxxx
wireless-key xxxxxxxxxxxx
wireless-channel 13
address 192.168.0.3
netmask 255.255.255.0
gateway 192.168.0.1

I create an initialisation script, which *should* restart the network on boot and therefore assign all the appropriate details.

sudo gedit /etc/init.d/wireless-network

With this content

/etc/init.d/networking restart

Set it's permissions

sudo chmod +x /etc/init.d/wireless-network

Created a symbolic link

sudo ln -s /etc/init.d/wireless-network /etc/rcS.d/S40wireless-network

Rebooted

reboot

Ok so it boots up ok and it's sitting on the login screen, when I try to ping it however it doesn't reply! What's wrong??

Any ideas? My wireless card is a USB Netgear dongle btw, so could it just be the order in which things are run? I.e. is it trying to run the above script before it recognises the USB dongle? How could I check this?

Thanks in advance,

Paul

[PaulStat]

So I did a bit of debugging of my script and my re-directed output looks like. Did an ifconfig as well

 * Reconfiguring network interfaces...
   ...done.
eth0      Link encap:Ethernet  HWaddr 00:01:2e:27:bc:92  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:22 Base address:0x4000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

So when it runs the script, wlan0 hasn't registered yet, suggestions?