setting muliple IP addresses on Single NIC

Hello,
I want to assign 2 static ip addresses to single NIC. How can
i do that? Also i want to be able to ping to both IP addresses whithin
LAN. I am using redhat 9.
Also can it be possible with setting eth0 as 10.0.0.100 and
172.16.1.100
regards,
cranium.

kernel.lover wrote:
> Hello,
> I want to assign 2 static ip addresses to single NIC. How can
> i do that? Also i want to be able to ping to both IP addresses whithin
> LAN. I am using redhat 9.
> Also can it be possible with setting eth0 as 10.0.0.100 and
> 172.16.1.100
> regards,
> cranium.

you can add alias for network interface using ipconfig ex.:

ifconfig eth0 172.16.0.0 netmask 255.255.255.0 up
ifconfig eth0:1 10.0.0.1 netmask 255.255.255.240 up


bye
pep

joy wrote:
> kernel.lover wrote:
>
>> Hello,
>> I want to assign 2 static ip addresses to single NIC. How can
>> i do that? Also i want to be able to ping to both IP addresses whithin
>> LAN. I am using redhat 9.
>> Also can it be possible with setting eth0 as 10.0.0.100 and
>> 172.16.1.100
>> regards,
>> cranium.
>
>
> you can add alias for network interface using ipconfig ex.:
>
> ifconfig eth0 172.16.0.0 netmask 255.255.255.0 up
> ifconfig eth0:1 10.0.0.1 netmask 255.255.255.240 up

Today it's more advisable to use the command ip and
not aliases, with ip you can give "real" IPs to your
interface.

Regards.

>
> bye
> pep


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On 8 Feb 2005 03:40:17 -0800, (E-Mail Removed) (kernel.lover)
wrote:

>Hello,
> I want to assign 2 static ip addresses to single NIC. How can
>i do that? Also i want to be able to ping to both IP addresses whithin
>LAN. I am using redhat 9.
> Also can it be possible with setting eth0 as 10.0.0.100 and
>172.16.1.100
>regards,
>cranium.

There is a kernel option requried to be compiled into the kernel
for this to work but i think it was already set in RedHat stock
kernels. I think it was CONFIG_IP_ALIAS. So you may need to recompile
the kernel but propably not.

Assuming the NIC device is eth0 copy
/etc/sysconfig/network-scripts/ifcfg-eth0 to
/etc/sysconfig/network-scripts/ifcfg-eth0:0

Then edit /etc/sysconfig/network-scripts/ifcfg-eth0:0
so the DEVICE=eth0:0 and set the IP/Netmask details accordingly
and do "ifup eth0:0"


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