[lug] Multihoming with Redhat

[bdoctor at ps-ax.com]

Ah, I see.  use "ifup eth0:1", it will figure out the file name :)
Also, you may want to change the IP to be what you want, otherwise it will
likely complain and possibly mess something up.

-brad

> I assume you mean something like
> /etc/sysconfig/network-scripts/ifcfg-eth0:1.  I am
> trying to use eth0.  The output from my previous post
> is the result of running
> /etc/sysconfig/network-scripts/ifup ifcfg-eth0:1.  I
> copied this file from ifcfg-eth0, and changed nothing
> but the "DEVICE" parameter.
> 
> DEVICE="eth0:1"
> BOOTPROTO="none"
> BROADCAST=10.0.5.255
> IPADDR="10.0.5.20"
> NETMASK="255.0.0.0"
> NETWORK=10.0.5.0
> ONBOOT="yes"
> IPXNETNUM_802_2=""
> IPXPRIMARY_802_2="no"
> IPXACTIVE_802_2="no"
> IPXNETNUM_802_3=""
> IPXPRIMARY_802_3="no"
> IPXACTIVE_802_3="no"
> IPXNETNUM_ETHERII=""
> IPXPRIMARY_ETHERII="no"
> IPXACTIVE_ETHERII="no"
> IPXNETNUM_SNAP=""
> IPXPRIMARY_SNAP="no"
> IPXACTIVE_SNAP="no"
> 
> --- bdoctor at ps-ax.com wrote:
> > What is the interface you are trying to use for
> > this?  The "root", like
> > eth0, or eth1.  Also, can you post the config file? 
> > And, after you have
> > created the file, run "ifup eth0:1" -- or whatever
> > the new virtual device
> > you are working with is.
> > 
> > Do post the file though.
> > 
> > -brad
> > 
> > > I tried this, and got the following message when I
> > > tried to fire up the new interface:
> > > 
> > > SIOCSIFADDR: No such device
> > > SIOCSIFFLAGS: No such device
> > > SIOCSIFNETMASK: No such device
> > > SIOCSIFBRDADDR: No such device
> > > SIOCSIFFLAGS: No such device
> > > SIOCADDRT: No such device
> > > 
> > > Can someone tell me what to look for?
> > > 
> > > Thanks,
> > > Dhruva
> > > 
> > > --- bdoctor at ps-ax.com wrote:
> > > > In terms of setting up the interface(s), you
> > should
> > > > look in 
> > > > /etc/sysconfig/network-scripts
> > > > 
> > > > In there you find files like ifcfg-eth0,
> > ifcfg-lo,
> > > > etc.  To use the same
> > > > interface with multiple IP addresses, copy the
> > > > ifcfg-eth0 file to ifcfg-eth0:1.
> > > > Then, edit the device entry and change that to
> > > > eth0:1, and the rest should
> > > > be obvious.  The device entry is critical,
> > however.
> > > > 
> > > > If you need multiple static routes, create the
> > file 
> > > > /etc/sysconfig/network/static-routes
> > > > 
> > > > Some samples for the static-routes:
> > > > 
> > > > eth0 net 192.168.0.0 netmask 255.255.255.0 gw
> > eth0
> > > > eth0 net 192.168.1.0 netmask 255.255.255.0 gw
> > eth0
> > > > eth0:1 net 207.2.3.4 netmask 255.255.255.248 gw
> > > > eth0:1
> > > > 
> > > > -brad
> > > > 
> > > > 
> > > > > We have a machine with one physical network
> > > > adapter
> > > > > that we would like to use for multihoming (2
> > IP
> > > > > addresses).
> > > > > 
> > > > > I can't seem to figure out how to do this on
> > > > Redhat
> > > > > 6.2, nor can I find any information on how to
> > do
> > > > this.
> > > > >  If anyone could point me in the right
> > direction,
> > > > that
> > > > > would be much appreciated.
> > > > > 
> > > > > Thanks,
> > > > > Dhruva
> > > > > 
> > > > >
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