How do I configure 2nd NIC in Ubuntu Server

[golfnut]

I recently installed Ubuntu Server 9.1 on a new box with an Intel 82576 network controller with dual ports. When I first installed I only configured one of the ports but I think I want to configure the second one now. What is the process for doing this?

[dfed]

How are you looking to configure them? separate nics on the same subnet? ganged together? failover? separate nics on different subnets?

[golfnut]

I would like them to be seperate nics on the same subnet.

[falko]

What's in /etc/network/interfaces?

[dfed]

Originally Posted by golfnut

I would like them to be seperate nics on the same subnet.

Well aside from setting up the ifconfig for each, Linux by default sets arp_filter to 0 (The kernel can respond to arp requests with addresses from other interfaces.)

So you'll need to add:

net.ipv4.conf.default.arp_filter = 1

to /etc/sysctl.conf

and add to local.start:

ip route add default via ${GATEWAY} dev $(NIC2_DEV} table TABLE1
ip rule add from ${NIC2_IP} table TABLE1

I assume you're doing this to dedicate a nic to a VM or some such.

Stole this info from here:

http://spg-kush.blogspot.com/2005/07...ne-subnet.html

[Schuby]

Hi,

Sorry to bring this thread back but I have a similar question.

I'm building a Counter Strike: Source game server (gonna use Ubuntu Server 10.04) and I'm looking at getting the Intel E1G42ET PCI-Express, dual port 82576 Gigabit Ethernet Controller and I'm wondering if it will be recognized right out of the box or if I'll have to do some setup?? I plan on disabling my motherboard's NIC prior to installation.

Also how can I set this card up so that one of the ports will connect to the internet and the other port I can connect to my LAN and share the internet to the LAN?

I know this is a really n00b question, I'm very new to this. If someone could at least point me in the right direction, I would really appreciate it.

Thank you.