D&C GLug - Home Page

[ Date Index ] [ Thread Index ] [ <= Previous by date / thread ] [ Next by date / thread => ]

Re: [LUG] Router problem - maybe not.

 

On Tue, 05 Sep 2006 13:57:04 +0100
Neil Williams <linux@xxxxxxxxxxxxxx> wrote:

> > 
> >> (If you're not sure, copy the contents of /etc/network/interfaces in a
> >> reply.)
> >>
> > I don't have this file on the computer.
> 
> 
I have now found /etc/sysconfig/network-scripts/ifcg-eth0
which I am told is the Mandriva version of network/interfaces.

Here is a copy of the contents

DEVICE=eth0
BOOTPROTO=dhcp
NETMASK=255.255.255.0
ONBOOT=yes
METRIC=10
MII_NOT_SUPPORTED=no
USERCTL=yes
IPV6INIT=no
IPV6TO4INIT=no
PEERDNS=yes
NETMASK=255.255.255.0
DHCP_CLIENT=dhclient
NEEDHOSTNAME=yes
PEERDNS=yes
PEERYP=no
PEERNTPD=no



> >> It sounds like the PC is booting with the wrong config - to the point
> >> where it cannot find the network connection. Follow Robin's advice and
> >> isolate *which* components of the network are still working before you
> >> reboot the router.
> >>
As far as I can see nothing is still working, just as though I have the
router switched off. Once I reboot the router everything is working OK.

> 
> >> Also, check /etc/resolv.conf which may have been overwritten. This would
> >> make it hard to locate local devices and could disable DNS resolution if
> >> the local nameserver cannot be found.
> >>
I have now found /etc/resolve.conf which contains just one line

nameserver 192.168.1.1

> 
> Are you running a static IP at all?
> 
No

> >> If you set your local DNS on the router, the IP address of the router
> >> should be your nameserver. If you run bind on the PC, the nameserver IP
> >> should be the static IP of the PC.
> >>
> > I don't understand all that. The router was set up for me. All I did
> > was plug it in to the computer and it worked.
> 
> Then you are probably using DHCP. It may just be that your DHCP client
 is barffing on startup and needs to be restarted. It may be that this
> package has been updated and is now complaining about something in the
> config that was previously handled.
> 
Yes, I am using DHCP. When I go into 'Configure your computer' and look
at the network section I see that the protocol is DHCP.

> Try:
> # /etc/init.d/dhcpd restart
> (or equivalent on Mandriva)
> 
I have searched for dhcpd  - result

/usr/share/doc/dhcp-common-3.0.3/contrib/dhcpd-conf-to-ldap.pl
/usr/share/doc/dhcp-common-3.0.3/doc/dhcp-dynamic-dns-examples/dhcp/etc/dhcpd.conf
/usr/share/setup-tool-backends/scripts/dhcpd-conf
/usr/share/setup-tool-backends/scripts/dhcpd.pl
/usr/lib/libDrakX/network/dhcpd.pm


> Instead of rebooting the router, next time try these commands on the PC:
> 
> # ifdown eth0
> # ifup eth0
> 
> It's the old GNU trick of restarting a single service instead of an
> entire machine. Only Windows requires a complete restart of an entire
> machine, you should avoid rebooting the router if at all possible,
> especially as it does NOT appear that the router is actually the device
> that has the problem.
> 
OK, I will try that and see what happens.

This time I turned off the router first, then I booted up the computer
and once it was running I restarted the router. Once it had settled
down I tried to download my emails and everything was fine.

> -- 
Neil Winchurst
> =============

> http://www.data-freedom.org/
> http://www.nosoftwarepatents.com/
> http://www.linux.codehelp.co.uk/
> 
> 
> 

-- 
The Mailing List for the Devon & Cornwall LUG
http://mailman.dclug.org.uk/listinfo/list
FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html