Static IP

[Scott Mertens]

On Tue, 2005-04-12 at 10:55 -0700, Rick Stevens wrote:
> Scott Mertens wrote:
> > On Tue, 2005-04-12 at 10:21 -0700, Rick Stevens wrote:
> > 
> >>Scott Mertens wrote:
> >>
> >>>On Tue, 2005-04-12 at 10:00 -0700, Rick Stevens wrote:
> >>>
> >>>
> >>>>Scott Mertens wrote:
> >>>>
> >>>>
> >>>>>New Linux User:  Red Hat Enterprise Linux ES release 4 (Nahant)
> >>>>>
> >>>>>I am in the process of setting up Printer sharing on this Linux box for
> >>>>>WIN XP users. I think some of my problems might be resolved if I can set
> >>>>>up a static IP for this box.  Currently it gets one from a Linksys
> >>>>>router connected to ISP.
> >>>>>
> >>>>>How can I tell Linux to use a static IP, but use DNS and other info
> >>>>>provided by ISP/Linksys router?
> >>>>
> >>>>First off, get into the router and write down the DNS info it uses.
> >>>>Also check the router's "DHCP Pool" (those are the addresses that the
> >>>>DHCP server will give out) and the router's IP address and netmask.
> >>>>
> >>>>Run "redhat-config-network" (or "RedHatIcon->System Settings->Network"
> >>>
> >>>>from the Gnome GUI) and configure the NIC for a fixed IP address.  You
> >>>
> >>>>will want to select a fixed IP that is NOT in the DHCP pool for the
> >>>>router.  Your netmask will probably be 255.255.255.0, but use the one
> >>>>you saw that the router was using.  Your default gateway will be the
> >>>>router (usually 192.168.0.1) and you'll put in the DNS servers you
> >>>>grabbed from the router.  That should be it.
> >>>
> >>>
> >>>Thanks, I'll give that a try.
> >>
> >>Go for it, Scott.  We'll be waiting for a status report.
> > 
> > 
> > Is there just a file I can edit?  My practice is to always make a backup
> > of files before editing, and I'm not sure the GUI will do that.  Also
> > running the following as you suggest throws an error.
> > 
> > [root at RHServer01 ~]# redhat-config-network
> > -bash: redhat-config-network: command not found
> 
> That's odd.  Hmmm.  Try "system-config-network".  One or the other
> should be in /usr/bin.
> 
> Anyway, yes, you can edit files if you wish.  You're interested in
> these two files:
> 
> 	/etc/sysconfig/network
> 	/etc/sysconfig/network-scripts/ifcfg-eth0
> 
> /etc/sysconfig/network contains three lines generally.  Here's a typical
> file:
> 
> 	NETWORKING=yes
> 	HOSTNAME=hostname.domainname.tld
> 	GATEWAY=xxx.xxx.xxx.xxx
> 
> The values in there should be pretty obvious.  Put your desired hostname
> as the value of the "HOSTNAME=" line, and the IP address of your gateway
> in the "GATEWAY=" line (as I said, your gateway is probably
> 192.168.0.1, but use whatever the router's LAN port's address is).
> 
> The second file, /etc/sysconfig/network-scripts/ifcfg-eth0, sets up the
> specifics for your NIC.  The only data that is REQUIRED in that file
> are the following:
> 
> 	DEVICE=eth0
> 	BOOTPROTO=static
> 	IPADDR=xxx.xxx.xxx.xxx
> 	NETMASK=yyy.yyy.yyy.yyy
> 	ONBOOT=yes
> 
> Make sure you set the "DEVICE=" to the proper device.  If you only have
> one NIC, then "eth0" is the right value (it should match the name of the
> file).
> 
> "BOOTPROTO=static" is what makes the device use a static IP rather than
> one from DHCP (which is triggered by "BOOTPROTO=dhcp").  Obviously, you
> put your desired IP address in the "IPADDR=" line and your netmask in
> "NETMASK=".
> 
> The final line, "ONBOOT=yes" tells the system to bring up this interface
> at boot time.
> 
> Once you've got all that set up, do "/etc/rc.d/init.d/network restart"
> and the system should switch over to your new network settings.

Thanks system-config-network did work.  And if this message goes
through, the setup and file edits worked as well.

Great board for us beginners.  Appreciate all the help!!
> 
> Hope that helps.
> ----------------------------------------------------------------------
> - Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
> - VitalStream, Inc.                       http://www.vitalstream.com -
> -                                                                    -
> -           What is a "free" gift?  Aren't all gifts free?           -
> ----------------------------------------------------------------------
> 
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