x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
IFUP(8) Network configuration IFUP(8)
NAME
ifup - start a pre-configured network interface.
ifdown - stop a (pre-configured) network interface.
ifstatus - show the state of a (pre-configured) network interface.
ifprobe - checks if the configuration for the interface has changed
SYNOPSIS
if{up,down,status,probe} [ <configuration-name> ] <interface> [-o
options ]
NOTATION
We use the terms configuration, interface and device in a dedicated
way. A device is always a piece of hardware representing a network
interface, a PCI or PCMCIA card or a USB device. An interface then is
the name of the network interface it gets from the kernel, when the
device has been registered. A configuration is a set of parameters
which can be assigned to an interface like IP addresses or routes.
DESCRIPTION
ifup is used to bring up a pre-configured interface for networking. It
is usually invoked by the network script at boot time or by the PCM-
CIA/hotplug system. It can also be used to start interfaces manually
on the command line. It activates the link, adds addresses and other
parameters and sets up the routes for an interface.
Former iprenew operation is performed upon each successful ifup call.
ifdown is used to set down the interface and flush all its addresses.
It is possible to let ifdown check the interface if it is still used
before setting it down. If configured it may then get rid of the using
processes or refuse setting it down. Have a look at /etc/sysconfig/net-
work/config to enable this feature.
ifstatus checks if the interface and its routes were set up properly.
ifprobe checks if any of the configuration files for this interface
have been changed since the interface is up.
<interface> is the network interface name.
The network interface names of physical network devices are assigned by
the kernel and may be modified by udev(7) rules.
<configuration-name> This optional parameter exists for compatibility
reasons only and is not used.
OPTIONS
The following are options to be specified after the -o switch.
debug Be verbose.
quiet Silent mode. Feedback only via return code.
force Applicable to ifdown only. Forces persistent (nfsroot type)
interface down.
FILES
/sbin/ifup
The script itself.
/etc/sysconfig/network/config
General configuration options. See section GENERAL VARIABLES
below.
/etc/sysconfig/network/ifcfg- <configuration-name>
The files containing the configuration of the devices. An exam-
ple that shows a typical configuration with the name ifcfg-eth0:
IPADDRESS=10.10.11.184
NETMASK=255.255.0.0
BROADCAST=10.10.255.255
STARTMODE=onboot
BOOTPROTO=static
/etc/sysconfig/network/ifroute- <configuration-name>
You can specify individual routes for every configuration in
these files. See routes (5) for a detailed description.
GENERAL VARIABLES
There are some general settings in the file /etc/sysconfig/network/con-
fig. If needed you can also set most of the general variables as an
individual variable in the ifcfg-* files. Please see the description
of these variables in /etc/sysconfig/network/config.
For dhcp there are additional global options in /etc/sysconfig/net-
work/dhcp. Also these are described there and can be used individually
in ifcfg-* files.
DIAGNOSTICS
ifstatus interface
wicked generates debug output when called with debug option set to a
particular facility (e.g. all). Please use it, when something wrong is
happening.
COPYRIGHT
Copyright (C) 2014 SUSE LINUX Products GmbH, Nuernberg, Germany.
BUGS
Please report bugs at <https://bugzilla.novell.com/index.cgi>
AUTHORS
Pawel Wieczorkiewicz
SEE ALSO
ifcfg(5), routes(5), wicked(8), ifcfg-wireless(5), ifcfg-tunnel(5),
ifcfg-vlan(5), ifcfg-bonding(5),
wicked August 2004 IFUP(8)
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