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U.S. Robotics SureConnect ADSL Ethernet/USB Router User Guide
1.4 ifconfig
The ifconfig command contains several forms to obtain information or configure an IP address for
an interface. The first form configures the IP address and other parameters for the specified
interface. The remaining forms display information about the interface(s).
ifconfig –o <interface_name> inet <address> [netmask <mask>] [broadcast <addr>]
[up|down] [mtu <n>]
ifconfig –o <interface_name>
ifconfig –o –a
ifconfig –o –l
<interface_name> The name of the interface. Possible values are “eth0”, “eth1”, “mer0”, “usb0”,
“lo0”, “atm0”, “atm1”, “atm2”, “atm3”, “atm4”, “atm5”, “atm6”, “atm7”, “ppp0”, “ppp1”, “ppp2,” “ppp3”,
“ppp4”, “ppp5”, “ppp6”, “ppp7”.
<address>
The IP address to be assigned to the interface. Dot-notation is used to enter the IP address (for
example 192.168.2.1).
netmask <mask>
The netmask is used to extract the network part from the IP address. It also specifies how much of
the address is to be reserved for subdividing the network into sub-networks that are taken from the
host field of the address. Netmask is ‘AND’ed with the interface IP address to get the network ID
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