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Old 10-08-2004, 07:48 AM   #1
cbriscoejr
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Registered: Sep 2004
Location: Baltimore, Md
Distribution: Red Hat
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Question Subnet change - 2.4.19rc2


I am moving a Red Hat 7.3 server from IP xxx.95.119.48 to xxx.95.149.35. the /etc/sysconfig/network-scripts/ifcfg-eth0 shows

DEVICE=eth0
BOOTPROTO=dhcp
ONBOOT=yes

I ran ifconfig eth0 xxx.95.149.35 broadcast xxx.95.149.255 netmask 255.255.255.0

After that I did /etc/init.d/network restart and eth0 FAILS.


I am not sure what is wrong. I can ping myself after the change but cannot ping the GATEWAY or anything else. There are no other systems on this xxx.95.149 subnet but I was able to ping the gateway xxx.95.149.254 from my Windows desktop which is on the xxx.95.100 subnet.

Help please?
 
Old 10-08-2004, 08:33 AM   #2
peter_robb
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Registered: Feb 2002
Location: Szczecin, Poland
Distribution: Gentoo, Debian
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You are mixing boot scripts, dhcp & ifconfig together.... They all have different information...

If eth0 boots as dhcp, there will be a dhcp server somewhere to talk to, (otherwise it will use it's last good ip allocation.) Best to change the dhcp sever settings to issue the new ip number..

OR, change ifcfg-eth0 to:
DEVICE=eth0
BOOTPROTO=static
ONBOOT=yes
IPADDR=xxx.95.149.35
NETMASK=255.255.255.0
BROADCAST=xxx.95.149.255
NETWORK=xxx.95.149.0
GATEWAY=xxx.95.149.254

then restart the network.
Usually, ifup eth0 will be enough.
ifconfig doesn't save any settings anywhere which is why the net restart wiped the changes you made.
 
Old 10-08-2004, 11:50 AM   #3
cbriscoejr
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Registered: Sep 2004
Location: Baltimore, Md
Distribution: Red Hat
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Thank you for your assistance. I actually want to make this static so I have done exactly as you stated. When I restart the network I can only ping myself. We plugged a windows laptop into the same hub and was able to ping the xxx.95.149.35 ( the box I'm configuring) and the DNS which is xxx.95.149.1.

I found that the /etc/sysconfig/network-scripts.ifcfg-eth0 file was originally set to DHCP. I saved it and ran "netconfig" with eth0 down. I set the ip, netmask and broadcast. Then restarted the network with the above results.

There is a file /etc/dhcpc/dhcpcd-eth0.info as I mentioned in my original post. I made changes in there but I was told there is no dhcp on this subnet

Bottom line is I want to set this up for "static". Knowing that there was some dhcp piece before how do I go about it?
 
Old 10-08-2004, 05:08 PM   #4
mermxx
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Registered: Apr 2004
Location: Wales
Distribution: rh9, winxp
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u can try editing the /etc/resolv.conf file and
adding the static ip addresses there
eg
nameserver xxx.xxx.xxx.xxx (which will be the gateway server address which I presume is ur winxp box) but i am not to sure about ur network, can u be a bit more specific....are u trying to connect a standalone linux to a standalone windoze? If so then u need to look at your ip addresses and subnet...can u try and give a bit more info :-)
 
  


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