[NTLUG:Discuss] Multiple IP's on a NIC

[James L. Skidmore]

That's no problem :-)

Redhat sets the NIC's in /etc/sysconfig/network-scripts/

In that directory, you should find at least ifcfg-eth0 and possibly
ifcfg-eth1 if you have set up two NIC's.

copy the ifcfg-eth0 to ifcfg-eth0:0 (eth0:1, etc.) and change the IP
address/network addr/broadcast addr - etc.

You can then use /etc/rc.d/init.d/network (stop|start|restart) to bring
up/take down/ restart all of the interfaces.

ifup eth0 to bring the interface up
ifdown eth0 to bring down the interface

and of course you can still use ifconfig

Hope this helps

============================================================
James L. Skidmore		james at linux-guy.com
http://linux-guy.com		helpline: metro 817-516-7170
   Linux - Consulting - Training - Security - Networks
============================================================

> > On Fri, 29 Sep 2000, Gregory L. Camp wrote:
> > 
> > > Currently I'm using the command string "ifconfig eth0:0 192.168.1.1
> > > broadcast 192.168.1.255 netmask 255.255.255.0 up" to add 
> > secondary, and
> > > sometimes tertiary, ip's to a NIC.
> > > 
> > > Here's my two questions: Is this the best way to do this? 
> > and Is there a way
> > > to remove a secondary ip without taking down the entire NIC?
> > > 
> > > TIA. 
> > > 
> > > Gregory L. Camp
> > > Gregory.Camp at osc.com
> 
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