Adding a 2nd Ethernet card to Linux
- Make Linux autoprobe for a second card at boot time by adding
append = "ether=0,0,eth1"
to the top of /etc/lilo.conf, then re-run lilo.
- Assign an IP address to the new card using ifconfig:
ifconfig eth1 192.168.100.2 netmask 255.255.255.0
Where 192.168.100.2 is the address of the card & 255.255.255.0 is the netmask of the network the card is connected to.
- Define a network to be accessed via the card using route:
route add -net 192.168.100.0 netmask 255.255.255.0
Where 192.168.100.0 is the address and 255.255.255.0 is the netmask of the network the card is connected to.
- If necessary, redefine the default route to point to the Internet gateway:
route add default gw 192.168.100.1 netmask 0.0.0.0
Where 192.168.100.1 is the address of the Internet gateway
- Put the ifconfig & route commands into /etc/rc.d/rc.inet1 so they are set up when the machine is restarted