Redhat 8.0 - IP and  Route Settings
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Public domain
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### Permanent IP Settings

Primary: /etc/sysconfig/network-scripts/ifcfg-eth0

    DEVICE=eth0
    BOOTPROTO=static
    BROADCAST=172.16.10.63
    IPADDR=172.16.10.33
    NETMASK=255.255.255.224
    NETWORK=172.16.10.32
    ONBOOT=yes

Secondary: /etc/sysconfig/network-scripts/ifcfg-eth0:0

    BROADCAST=192.168.0.255
    IPADDR=192.168.0.1
    NETMASK=255.255.255.0
    NETWORK=192.168.0.0

Secondary: /etc/sysconfig/network-scripts/ifcfg-eth0:1

    BROADCAST=172.16.10.127
    IPADDR=172.16.10.100
    NETMASK=255.255.255.224
    NETWORK=172.16.10.96


Gateway: /etc/sysconfig/network

    NETWORKING=yes
    HOSTNAME=RedhatBox
    GATEWAY=172.16.10.1


DNS: /etc/resolv.conf

    nameserver 192.9.9.3


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### Temporary IP settings


Primary

    # ifconfig eth0 192.168.1.4 netmask 255.255.255.0 broadcast 192.168.1.255

Secondary

    # ifconfig eth0:0 10.10.10.1 netmask 255.255.255.0 broadcast 10.10.10.255

List main route table

    # route -n
    Kernel IP routing table
    Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
    192.168.0.0     0.0.0.0         255.255.255.240 U     0      0        0 br0
    192.168.0.16    0.0.0.0         255.255.255.240 U     0      0        0 br0
    192.168.0.32    0.0.0.0         255.255.255.224 U     0      0        0 br0
    192.168.0.64    0.0.0.0         255.255.255.192 U     0      0        0 br0
    192.168.0.192   192.168.0.60    255.255.255.192 UG    0      0        0 br0
    192.168.0.128   0.0.0.0         255.255.255.192 U     0      0        0 br0
    10.10.10.128    0.0.0.0         255.255.255.192 U     0      0        0 br0
    127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
    0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 br0

Add/Delete Routes Temporary

    # route add -host 10.10.10.129 dev eth1
    # route add -net 10.10.10.128/26 dev eth0
    # route add -net 172.16.10.1/24 gw 10.10.10.130
    # route del -net 192.168.1.0/24 dev eth1
    # route del default
    # route add default gw 10.10.10.129 dev eth1

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_BY: Pejman Moghadam_  
_TAG: route, ifconfig, ip-setting_  
_DATE: 2003-07-01 12:48:16_