Bind Two IP Addresses To One NIC (lan0)

[Karim Manji]

Hi,

Is is possible to address one nic (lan0) with two IP addresses belonging to different subnets. I have been able to do this on the IRIX platform. I am hoping to do this without having to add a second NIC card (lan1).

I was not able to find any specfic treads on this.

Thanks,
KM

[harry d brown jr]

Yes, but you only can have one default gateway.

live free or die
harry

[Sanjay_6 · Accepted solution]

Hi KM,

Take a look at the threads below,

http://us-support.external.hp.com/cki/bin/doc.pl/sid=e9d4e27a053dba1075/screen=ckiDisplayDocument?docId=200000045145889

http://us-support.external.hp.com/cki/bin/doc.pl/sid=e9d4e27a053dba1075/screen=ckiDisplayDocument?docId=200000053199190

Hope this helps.

Regds

[S.K. Chan]

You can do this on a 11.x system

# ifconfig lan0:0 netmask
# ifconfig lan0:1 <2nd IP Address> netmask

The /etc/rc.config.d/netconf file ..

INTERFACE_NAME[0]="lan0:0"
IP_ADDRESS[0]=10.10.10.1
SUBNET_MASK[0]=255.255.248.0
BROADCAST_ADDRESS[0]=""
INTERFACE_STATE[0]=""
DHCP_ENABLE[0]=0
INTERFACE_NAME[1]="lan0:1"
IP_ADDRESS[1]=10.10.10.15
SUBNET_MASK[1]=255.255.248.0
BROADCAST_ADDRESS[1]=""
INTERFACE_STATE[1]=""
DHCP_ENABLE[1]=0

[Karim Manji]

Thank you so much for an answer and solution. I understand that I can only have one gateway (makes sense). I quickly fixed the issue I was having from S.K response, and then looked the links provided by Sanjay.

Thanks again,
KM

[Kristopher March]

What are the benefits of doing this?

I have two 10/100 copper cards and I'm thinking that this would improve system performance somewhat. Currently, only one card is in use.

I'm running a 2250 V Class.