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157 lines
4.2 KiB
ReStructuredText
157 lines
4.2 KiB
ReStructuredText
====
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ifup
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====
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-------------------------------------
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network interface management commands
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-------------------------------------
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:Author: roopa@cumulusnetworks.com
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:Date: 2014-02-05
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:Copyright: Copyright 2014 Cumulus Networks, Inc. All rights reserved.
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:Version: 0.1
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:Manual section: 8
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NAME
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====
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**ifup** - bring a network interface up
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**ifdown** - take a network interface down
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SYNOPSIS
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========
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ifup [-h] [-a] [-v] [-d] [--allow CLASS] [--with-depends]
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**[-X EXCLUDEPATS] [-f] [-n] [--print-dependency {list,dot}]**
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**[IFACE [IFACE ...]]**
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ifdown [-h] [-a] [-v] [-d] [--allow CLASS] [--with-depends]
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**[-X EXCLUDEPATS] [-f] [-n] [--print-dependency {list,dot}]**
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**[IFACE [IFACE ...]]**
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DESCRIPTION
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===========
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**ifup** and **ifdown** commands can be used to configure (or, respectively,
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deconfigure) network interfaces based on interface definitions in the
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file **/etc/network/interfaces/** file.
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**ifquery(8)** maybe used in conjunction with **ifup** and **ifdown**
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commands to query and validate applied/running configuration.
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**ifup** always works on the current **interfaces(5)** file under
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**/etc/network/interfaces**. **ifdown** works on the last applied interface
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configuration.
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**ifup** on an already ifup'ed interface will re-apply the configuration,
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skipping already applied configuration whereever possible. In many cases
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where config commands are idempotent, you will see that ifup/ifdown will
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reapply the config even if the interface already has that config.
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**ifup** and **ifdown** understands interface dependency order.
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For logical devices like vlans, bridges, bonds **ifup** creates the
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interface and **ifdown** deletes the interface. Use **--no-scripts**
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option if you only want to administratively bring the interface up/down.
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OPTIONS
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=======
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positional arguments:
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**IFACE** interface list separated by spaces. **IFACE** list and **'-a'**
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argument are mutually exclusive.
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optional arguments:
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-h, --help show this help message and exit
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-a, --all process all interfaces marked "auto"
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-v, --verbose verbose
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-d, --debug output debug info
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-l, --allow CLASS ignore non-"allow-CLASS" interfaces
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-w, --with-depends run with all dependent interfaces. This option
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is redundant when -a is specified. When '-a' is
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specified, interfaces are always executed in
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dependency order.
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-X EXCLUDEPATS, --exclude EXCLUDEPATS
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Exclude interfaces from the list of interfaces to
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operate on. Can be specified multiple times
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-f, --force force run all operations
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-n, --no-act print out what would happen,but don't do it
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-p, --print-dependency {list,dot} print iface dependency in list or dot format.
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--no-scripts, --no-addons dont run any addon modules/scripts. Only bring
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the interface administratively up/down
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EXAMPLES
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========
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# bringing up all interfaces
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**ifup -a**
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# bringing up interface list
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**ifup swp1 swp2**
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# bringing up interface with its dependents
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**ifup br0 --with-depends**
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# bringing down all interfaces
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**ifdown -a**
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# bringing down a single interface
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**ifdown swp1**
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# excluding interfaces using -X option
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**ifdown -X eth0 -a**
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**ifup -X eth0 -a**
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**ifdown -X eth0 -X lo -a**
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# using verbose -v option to see what is going on
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**ifup -v -a**
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# using debug -d option to see more of what is going on
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**ifup -d -a**
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# ignore errors
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**ifup -a -f**
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**ifdown -a -f**
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# ifdown and ifup on all interfaces using service command/init script
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**service networking restart**
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# ifup on all interfaces using service command/init script
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**service networking start**
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# ifdown on all interfaces using service command/init script
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**service networking stop**
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# Also see **ifreload(8)**
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SEE ALSO
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========
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ifquery(8),
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ifreload(8),
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interfaces(5),
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interfaces-addons(5)
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