How to configure 2 NIC in Slcakware?

[ircsax]

Hello,
Im new with Slackware and before this Im always stick to my RH but im not an expert on Linux. Ok my problem is how can I re-configure my NICs? Im using slackware 7 with 2 Realtek Networkcard. My slack does detect both NIC but I need to configure my eth0 and eth1. I need to set DHCP to one of my NIC and set an IP as a gateway server to the other one. As for now I only set one of them a client ip. Which filw should I edit?? Thanks

snc:~$ /sbin/ifconfig
eth0 Link encap:Ethernet HWaddr 00:30:4F:21:F0:28
inet addr:192.168.1.222 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:95 errors:0 dropped:0 overruns:0 frame:0
TX packets:68 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
Interrupt:10 Base address:0xe000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:18 errors:0 dropped:0 overruns:0 frame:0
TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0

snc:~$ /sbin/ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:00:E8:53:3F:A7
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
Interrupt:7 Base address:0xe400

snc:~$

[drakebasher]

I just did this last night with Slackware 8.1. I guess we're both a little behind the curve. My reference is home network mini-HOWTO from The Linux Documentation Project:

Edit /etc/modules.conf:

  alias eth0 3c509
  alias eth1 3c509
  options 3c509 io=0x220,0x230 irq=5,10

Both of my NICs use driver 3c509: change this to match your hardware. io base address and irq both can be found from doing 'ifconfig eth0' and 'ifconfig eth1'.

[MeatAbstract]

You can edit

$/etc/rc.d/rc.inet1.conf

then just restart the network.

$/etc/rc.d/./rc.inet1 restart

[puntmuts]

You can edit

$/etc/rc.d/rc.inet1.conf

then just restart the network.

$/etc/rc.d/./rc.inet1 restart

This is true for Slackware 9.1 and up or so, but older versions did not come with scripts supporting multiple interfaces. So you have to edit your /etc/rc.d/rc.inet1 script to reflect your configuration, or add a line to the rc.local script.

Here is a copy of a I believe 9.1 version of rc.inet1:

#! /bin/sh
# /etc/rc.d/rc.inet1
# This script is used to bring up the various network interfaces.
#
# @(#)/etc/rc.d/rc.inet1 9.1 Tue Aug 26 13:34:58 PDT 2003 (pjv)

############################
# READ NETWORK CONFIG FILE #
############################

# Get the configuration information from /etc/rc.d/rc.inet1.conf:
. /etc/rc.d/rc.inet1.conf

######################
# LOOPBACK FUNCTIONS #
######################

# Function to bring up the loopback interface.  If loopback is
# already up, do nothing.
lo_up() {
  if grep lo: /proc/net/dev 1> /dev/null ; then
    if ! /sbin/ifconfig | grep "^lo" 1> /dev/null ; then
      /sbin/ifconfig lo 127.0.0.1
      /sbin/route add -net 127.0.0.0 netmask 255.0.0.0 lo
    fi
  fi
}

# Function to take down the loopback interface:
lo_down() {
  if grep lo: /proc/net/dev 1> /dev/null ; then
    /sbin/ifconfig lo down
  fi
}

######################
# ETHERNET FUNCTIONS #
######################

# Function to bring up an Ethernet interface.  If the interface is
# already up or does not yet exist (perhaps because the kernel driver
# is not loaded yet), do nothing.
eth_up() {
  # If the interface isn't in the kernel yet (but there's an alias for it in
  # modules.conf), then it should be loaded first:
  if ! grep eth${1}: /proc/net/dev 1> /dev/null ; then # no interface yet
    if /sbin/modprobe -c | grep -w "alias eth${1}" | grep -vw "alias eth${1} off" > /dev/null ; then
      /sbin/modprobe eth${1}
    fi
  fi
  if grep eth${1}: /proc/net/dev 1> /dev/null ; then # interface exists
    if ! /sbin/ifconfig | grep "eth${1} " 1> /dev/null ; then # interface not up
      if [ "${USE_DHCP[$1]}" = "yes" ]; then # use DHCP to bring interface up
        if [ ! "${DHCP_HOSTNAME[$1]}" = "" ]; then
          /sbin/dhcpcd -t 10 -h ${DHCP_HOSTNAME[$1]} -d eth${1}
        else
          /sbin/dhcpcd -t 10 -d eth${1}
        fi
      else # bring up interface using a static IP address
        if [ ! "${IPADDR[$1]}" = "" ]; then # skip unconfigured interfaces
          # Determine broadcast address from the IP address and netmask:
          BROADCAST=`/bin/ipmask ${NETMASK[$1]} ${IPADDR[$1]} | cut -f 1 -d ' '`
          # Set up the ethernet card:
          echo "Configuring eth${1}:"
          echo "/sbin/ifconfig eth${1} ${IPADDR[$1]} broadcast ${BROADCAST} netmask ${NETMASK[$1]}"
          /sbin/ifconfig eth${1} ${IPADDR[$1]} broadcast ${BROADCAST} netmask ${NETMASK[$1]}
        else
          if [ "$DEBUG_ETH_UP" = "yes" ]; then
            echo "eth${1} interface is not configured in /etc/rc.d/rc.inet1.conf"
          fi
        fi
      fi
    else
      if [ "$DEBUG_ETH_UP" = "yes" ]; then
        echo "eth${1} is already up, skipping"
      fi
    fi
  else
    if [ "$DEBUG_ETH_UP" = "yes" ]; then
      echo "eth${1} interface does not exist (yet)"
    fi
  fi
}

# Function to take down an Ethernet interface:
eth_down() {
  if grep eth${1}: /proc/net/dev 1> /dev/null ; then
    if [ "${USE_DHCP[$1]}" = "yes" ]; then
      /sbin/dhcpcd -k -d eth${1}
      sleep 1
    else
      /sbin/ifconfig eth${1} down
    fi
  fi
}

#####################
# GATEWAY FUNCTIONS #
#####################

# Function to bring up the gateway if there is not yet a default route:
gateway_up() {
  if ! /sbin/route | grep "^default" 1> /dev/null ; then
    if [ ! "$GATEWAY" = "" ]; then
      /sbin/route add default gw ${GATEWAY} metric 1
    fi
  fi
}

# Function to take down an existing default gateway:
gateway_down() {
  if /sbin/route | grep "^default" 1> /dev/null ; then
    /sbin/route del default
  fi
}

############
### MAIN ###
############

case "$1" in
'start') # "start" brings up all available interfaces:
  lo_up
  eth_up 0
  eth_up 1
  eth_up 2
  eth_up 3
  gateway_up
  ;;
'stop') # "stop" takes down all existing interfaces:
  gateway_down
  eth_down 3
  eth_down 2
  eth_down 1
  eth_down 0
  lo_down
  ;;
*) # The default is to bring up all interfaces:
  lo_up
  eth_up 0
  eth_up 1
  eth_up 2
  eth_up 3
  gateway_up
esac

# End of /etc/rc.d/rc.inet1

And an example of a rc.inet1.conf file:

# /etc/rc.d/rc.inet1.conf
#
# This file contains the configuration settings for network interfaces.
# If USE_DHCP[interface] is set to "yes", this overrides any other settings.
# If you don't have an interface, leave the settings null ("").

# Config information for eth0:
IPADDR[0]=""
NETMASK[0]=""
USE_DHCP[0]="yes"
DHCP_HOSTNAME[0]=""

# Config information for eth1:
IPADDR[1]="192.168.1.1"
NETMASK[1]="255.255.255.0"
USE_DHCP[1]="no"
DHCP_HOSTNAME[1]=""

# Config information for eth2:
IPADDR[2]=""
NETMASK[2]=""
USE_DHCP[2]=""
DHCP_HOSTNAME[2]=""

# Config information for eth3:
IPADDR[3]=""
NETMASK[3]=""
USE_DHCP[3]=""
DHCP_HOSTNAME[3]=""

# Default gateway IP address:
GATEWAY=""

# Change this to "yes" for debugging output to stdout.  Unfortunately,
# /sbin/hotplug seems to disable stdout so you'll only see debugging output
# when rc.inet1 is called directly.
DEBUG_ETH_UP="no"

This example configures an eth0 using dhcp (including default gateway) and an internal eth1 with a static address.