[AuckLUG] ADSL

[editor at inventory.co.nz]

Rebooting the computer which had problems eliminated the problems. 
"ifconfig eth0" now gives the IP address (192.168.1.4) which I 
entered. I have not had any luck with the last number (4) replaced 
by two digits but that doesn't matter. I have never managed to get 
DHCP to work at home although it worked at the installfest; I 
suppose this is a limitation of my old (2002 vintage) router.

Just one remaining question: What is the significance of the "Host 
name" which comes up when I click on System > Administration > 
Network > General.

Thanks for your help.

Don

> editor at inventory.co.nz wrote:
> > I tried "ifconfig -a" but didn't really understand what I was 
> > looking at.
> >
> >   
> OK
> 
> ifconfig -a lists the status of all of the network connections
> 
> lo is the localhost network connection with an ip address of 127.0.0.1
> 
> eth0 is the first of the ethernet connections and will have an ip
> address of 192.168.1.x where x is in the range of 1 to 254, given your
> settings (note that this can take many other values but I've simplified
> to your network)
> 
> Each PC on the network has a separate IP address (for obvious reasons)
> 
> One of my PC's has this as a response to ifconfig eth0
> eth0      Link encap:Ethernet  HWaddr 00:E0:4C:30:DD:B7
>           inet addr:10.168.0.247  Bcast:10.168.0.255  Mask:255.255.255.0
>           inet6 addr: fe80::2e0:4cff:fe30:ddb7/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:96917 errors:7 dropped:36 overruns:7 frame:0
>           TX packets:79155 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:72995750 (69.6 Mb)  TX bytes:10565593 (10.0 Mb)
>           Interrupt:16 Base address:0xc000
> 
> The important line is the inet addr line - with inet addr and mask being
> the key bits (again, over simplified a bit)
> > On one computer, I found that changing the last number of the IP 
> > address to a single digit dealt with the problem and I can now 
> > access the Internet on that computer.
> >   
> 
> OK - if you change those values, steer away from anything already assigend
> - 192.168.1.1 - your gateway
> - any other values assigned to other PC's
> Keep the last digit in the range 1 to 254 - eg 192.168.1.100 is probably
> safe
> > On the other computer, after making a similar change, I managed to 
> > ping the gateway but not a DNS. Now I can't even start a terminal 
> > session or launch any applications when running Ubuntu on that 
> > computer. However, I intend to reinstall the operating systems on 
> > that computer so, hopefully, all will be well.
> >   
> I'd suggest rebooting first which will reset all of the values
> 
> In principle, if you have a DHCP server running on your gateway box, you
> should automatically get all of the appropriate settings.
> 
> Hang in there :-)
> 
> David H
> > Thanks for your help.
> >
> >   
> 
> 
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