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Comments and suggestions concerning this book should be mailed to gmourani@videotron.ca © Copyright 1999-2000 Gerhard Mourani and Open Network Architecture ® 95 Problem 2 If the drivers(s) of the card(s) is/are compiled into the kernel (monolithic kernel), the  PCI probes will find all related cards automatically. ISA cards will also find all related cards automatically, but in some circumstance ISA cards still need to do the following. This information is stored in the file “/etc/lilo.conf”. The method is to pass boot-time arguments to the kernel, which is usually done by LILO. For ISA cards, edit the  lilo.conf file (vi /etc/lilo.conf) and add: append=”ether=0,0,eth1” NOTE: First test your ISA cards without the boot-time arguments in the “lilo.conf” file and if this fail use the boot-time arguments. In this case eth0 and eth1 will be assigned in the order that the cards are found at boot. Since we have recompiled the kernel, we must use the second method (If the drivers(s) is/are compiled into the kernel) to install our second Ethernet card on the system. Remember this is requiring only in some circumstance for ISA cards, PCI cards will be find automatically. Files related to networking functionality In Linux, the TCP/IP network is configured through several text files you may have to edit in to make networking work. It’s very important to know the configurations files related to TCP/IP networking, so that you can edit and configure the files if necessary. Remember that our server doesn’t have an Xwindow interface to configure files via graphical interface. Even if you use a GUI in your daily activities it is important to know how to configure network in text mode. The following sections describe the basic TCP/IP configuration files. The “/etc/HOSTNAME” file This file stores your system’s host name—your system’s fully qualified domain name (FQDN), such as deep.openarch.com. Following is a sample “/etc/HOSTNAME” file: deep.openarch.com The “/etc/sysconfig/network-scripts/ifcfg-ethN” files Files configurations for each network device you may have or want to add on your system are located in the “/etc/sysconfig/network-scripts/” directory with Red Hat Linux 6.1 and are named ifcfg-eth0 for the first interface and ifcfg-eth1 for the second etc. Following is a sample “/etc/sysconfig/network-scripts/ifcfg-eth0” file: DEVICE=eth0 IPADDR=208.164.186.1 NETMASK=255.255.255.0 NETWORK=208.164.186.0 BROADCAST=208.164.186.255 ONBOOT=yes BOOTPROTO=none USERCTL=no