It is possible to use multiple Ethernet cards on a single machine. For each card there must be an alias and, possibly, options lines for each card in a user-created <module_name>.conf file in the /etc/modprobe.d/ directory.

For additional information about using multiple Ethernet cards, refer to the Linux Ethernet-HOWTO online at http://www.redhat.com/mirrors/LDP/HOWTO/Ethernet-HOWTO.html.