How to configure two IP addresses for one NIC.

[Ganesh Anekar]

Hi all,

I am trying to configure A class HP 9000 server.This server was previously having configured for two IPs.One was external IP and other was Internal IP.

Now it is NOT showing both IPs configured.
I want to configure with two IPs for One NIC.

How should I do that?

Thanks
Ganesh

[Helen French · Accepted solution]

Hi Ganesh:

You need to use the index numbers to do this:

1. ifconfig lan#:0 <1st IP Address> netmask
(Specifying lan0:0 is equivalent to lan0)
2. ifconfig lan#:1 <2nd IP Address> netmask

/etc/rc.config.d/netconf should resemble the following format:

INTERFACE_NAME[0]="lan0"
IP_ADDRESS[0]=10.10.10.1
SUBNET_MASK[0]=255.255.255.0
BROADCAST_ADDRESS[0]=""
INTERFACE_STATE[0]=""
DHCP_ENABLE[0]=0

INTERFACE_NAME[1]="lan0:1"
IP_ADDRESS[1]=10.10.20.15
SUBNET_MASK[1]=255.255.255.0
BROADCAST_ADDRESS[1]=""
INTERFACE_STATE[1]=""
DHCP_ENABLE[1]=0

HTH,
Shiju

[S.K. Chan]

Edit the /etc/rc.config.d/netconf as such ..
........
INTERFACE_NAME[0]="lan0"
IP_ADDRESS[0]=<1st-IP-address>
SUBNET_MASK[0]=
BROADCAST_ADDRESS[0]=""
INTERFACE_STATE[0]=""
DHCP_ENABLE[0]=0

INTERFACE_NAME[1]="lan0:1"
IP_ADDRESS[1]=<2nd-IP-address>
SUBNET_MASK[1]=
BROADCAST_ADDRESS[1]=""
INTERFACE_STATE[1]=""
DHCP_ENABLE[1]=0
.....

and just reboot or run ..

# ifconfig lan0:0 <1st-IP-address> netmask
# ifconfig lan0:1 <2nd-IP-address> netmask

[Ganesh Anekar]

hi,

Thank you very much guys..

It worked!!!

I will be there with more ques for you..

bye

ganesh