[plug] Strange network problem

[Steege, Phil E]

1.  my ifcfg-eth0 file is set for 'ONBOOT=yes'.
2.  I am using dhcpd
3.  my dhcp server is running, with no errors in /var/log/messages.  I used
'dmseg | grep eth0' and it shows the kernel finds my ethernet cards, with no
errors, on boot up.

On either machine, my eth0 WILL activate if I give it a static IP and do not
use dhcp.
It only hangs up when I tell it to use dhcp.
All of this started when I changed the domain name across my network.
I checked my linux box which is the dhcp server.  It shows my new domain
name in the dhcpd.conf file.  It appears the eth0 devices are not being
given an IP since they were assigned to the new domain name.

Is there a command line process to completely erase all networking so I can
start from scratch.
I wanted to use 'linuxconf', but it has been removed from redhat 7.3 install
disks.  I have been using the KDE control panel.
I want to do it all from the command line and start from the beginning.

-----Original Message-----
From: Paul Dean [mailto:paul at thecave.cantech.net.au] 
Sent: Friday, June 28, 2002 12:39 AM
To: PLUG
Subject: Re: [plug] Strange network problem


Hya,

Have you checked /etc/sysconfig/network-scripts/ifcfg-eth0 to make sure it
starts on boot? ie 'ONBOOT=yes'.

Are you using 'pump' or 'dhcpcd' to manage your eth0 device? Have you tried
manually starting with '/sbin/pump -i eth0 --lookup-hostname' ?

Is your dhcp server still running? The eth card in your server still up?
Check your '/var/log/messages' file for anything informing.

Hope this helps...


On Thu, 27 Jun 2002, Steege, Phil E wrote:

> I have two redhat 7.3 machines, DHCP served, that are part of a four 
> (4) computer home network. Recently I discovered the domain name I 
> picked was in use out on the internet and was causing some problems.  
> So I changed my domain name,using the kde control panel, and checked 
> on my windows2K machine ( I changed his workgroup name to the new 
> domain name also) that I could still see the samba shares on both 
> redhat machines, with the new domain name.  Everything seemed fine.
> I rebooted both linux machines last night (for no particular reason) and
> when they came back up they could not see the network.  I checked ifconfig
> and eth0 was there but had no IP address.
> The windows machine is also dhcp served and it had received its IP with no
> problems.
> 
> I did a route command and the only route showing is the 127.0.0 route
> 
> Does anyone know why a domain name change only, would cause this 
> result.
> 
> I used verified the cards in both machines were set up for dhcp and 
> then, as root, did a "service network restart".  Everything restarts 
> EXCEPT eth0.  It will not activate. I also tried it from the kde 
> control panel and eth0 will not activate from there either.
> 
> phil
> 

-- 
Paul...

/***** Experience is that marvelous thing that enables you to 
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	-- Franklin P. Jones *****/

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           -- Unknown*****/

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