8.3. Interface Control Scripts
/sbin/ifdown and /sbin/ifup, that call on control scripts located in the /etc/sysconfig/network-scripts/ directory.
The ifdown and ifup interface scripts are symbolic links to scripts in the /sbin/ directory. When either of these scripts are called, they require the value of the interface to be specified, such as:
ifup eth0 Determining IP information for eth0... done. |
At that point, the /etc/rc.d/init.d/functions and /etc/sysconfig/network-scripts/network-functions files are used to perform a variety of tasks. See Section 8.4 Network Function Files for more information.
are common interface control scripts:
ifup-aliases— Configures IP aliases from interface configuration files when more than one IP address is associated with an interface.
ifdown-cipcb and ifup-cipcb — Used to bring Crypto IP Encapsulation (CIPE) connections up and down.
ifdown-ipv6 and ifup-ipv6 — Contains IPv6-related function calls using environment variables in various interface configuration files and /etc/sysconfig/network.
ifup-ipx — Used to bring up an IPX interface.
ifup-plip — Used to bring up a PLIP interface.
ifup-plusb — Used to bring up a USB interface for network connections.
ifdown-post and ifup-post — Contains commands to be executed after an interface is brought up or down.
ifdown-ppp and ifup-ppp — Used to bring a PPP interface up or down.
ifup-routes — Adds static routes for a device as its interface is brought up.
ifdown-sit and ifup-sit — Contains function calls related to bringing up and down an IPv6 tunnel within an IPv4 connection.
ifdown-sl and ifup-sl — Used to bring a SLIP interface up or down.
 | Warning |
|---|---|
Removing or modifying any scripts in the /etc/sysconfig/network-scripts/ |
The easiest way to manipulate all network scripts simultaneously is to use the /sbin/service command on the network service (/etc/rc.d/init.d/network), as illustrated the following command:
/sbin/service network <action> |
In this example <action> can be either start, stop, or restart.
To view a list of configured devices and currently active network interfaces, use the following command:
/sbin/service/network status |
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