Handbook:Alpha/Networking/Dynamic/cs

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This page is a translated version of the page Handbook:Alpha/Networking/Dynamic and the translation is 50% complete.
Alpha Handbook
Instalace
O instalaci
Výběr média
Konfigurace sítě
Příprava disků
Instalace stage3
Instalace základního systému
Konfigurace jádra
Konfigurace systému
Instalace nástrojů
Konfigurace zavaděče
Dokončení
Práce s Gentoo
Úvod do Portage
Přepínače USE
Funkce portage
Systém initskriptů
Proměnné prostředí
Práce s Portage
Soubory a adresáře
Proměnné
Mísení softwarových větví
Doplňkové nástroje
Vlastní strom Portage
Pokročilé funkce
Konfigurace sítě
Začínáme
Pokročilá konfigurace
Modulární síťování
Bezdrátové sítě
Přidání funkcí
Dynamická správa

Network management

With laptops, systems can be always on the move. As a result, the system may not always have an Ethernet cable or plugged in or an access point available. Also, the user may want networking to automatically work when an Ethernet cable is plugged in or an access point is found.

In this chapter, we cover how this can be done.

Poznámka
This document only talks about ifplugd, but there are alternatives such as netplug. netplug is a lightweight alternative to ifplugd, but it relies on the kernel network drivers working correctly, and many drivers do not.

ifplugd

ifplugd is a daemon that starts and stops interfaces when an Ethernet cable is inserted or removed. It can also manage detecting association to Access Points or when new ones come in range.

root #emerge --ask sys-apps/ifplugd

Configuration for ifplugd is fairly straightforward too. The configuration is held in /etc/conf.d/net. Run man ifplugd for details on the available variables. Also, see /usr/share/doc/netifrc-*/net.example.bz2 for more examples.

FILE /etc/conf.d/netSample ifplug configuration
# Replace eth0 with the interface to be monitored
ifplugd_eth0="..."
  
# To monitor a wireless interface
ifplugd_eth0="--api-mode=wlan"

In addition to managing multiple network connections, users may want to add a tool that makes it easy to work with multiple DNS servers and configurations. This is very handy when the system receives its IP address via DHCP.

root #emerge --ask net-dns/openresolv

See man resolvconf to learn more about its features.