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Linux in a Nutshell, Fourth Edition
book

Linux in a Nutshell, Fourth Edition

by Ellen Siever, Stephen Figgins, Aaron Weber
June 2003
Beginner to intermediate content levelBeginner to intermediate
944 pages
43h 1m
English
O'Reilly Media, Inc.
Content preview from Linux in a Nutshell, Fourth Edition

Name

ifconfig

Synopsis

                  ifconfig [interface]
ifconfig [interface 
                  address_family 
                  parameters 
                  addresses]

TCP/IP command. Assign an address to a network interface and/or configure network interface parameters. ifconfig is typically used at boot time to define the network address of each interface on a machine. It may be used at a later time to redefine an interface’s address or other parameters. Without arguments, ifconfig displays the current configuration for a network interface. Used with a single interface argument, ifconfig displays that particular interface’s current configuration.

Arguments

interface

String of the form name unit, for example, en0.

address_family

Since an interface may receive transmissions in differing protocols, each of which may require separate naming schemes, you can specify the address_family to change the interpretation of the remaining parameters. You may specify inet (for TCP/IP, the default), ax25 (AX.25 Packet Radio), ddp (Appletalk Phase 2), or ipx (Novell).

parameters

The following parameters may be set with ifconfig:

add address / prefixlength

Add an IPv6 address and prefix length.

allmulti/-allmulti

Enable/disable sending of incoming frames to the kernel’s network layer.

arp/-arp

Enable/disable use of the Address Resolution Protocol in mapping between network-level addresses and link-level addresses.

broadcast [address]

(inet only) Specify address to use to represent broadcasts to the network. Default is the address with a host part of all 1s (i.e., ...

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Publisher Resources

ISBN: 0596004826