Linux Network Interface Overview

Managing Ethernet Connections

The network interface uses a sequential identity: eth0, eth1, and so on.

The network interface can be set to use aliases (aliases), the alias is labeled: Eth0:1, Eth0:2, which is called Network Sub-interface, is fictitious, so that a single network device can configure multiple addresses, alias is treated as a separate interface

View interfaces configured with the Ifconfig [ETHX] Command

To enable an interface using the Ifup ETHX command

To disable an interface using the Ifdown ETHX command

First, check the network card information

#ifconfig or Ifconfig–a or ifconfig eth0.

To start and stop the network card, use the following command: Ifup ethx or Ifdown ethx or ifconfig eth0 up or ifconfig down

Network Service Network

#service Network Status View network card state

#service Network Stop network card

#service Network Start Network card

#service Network restart Reboot network card

Graphical Network configuration System-config-network

1. System → preferences → network connection

Activate/Assign IP address/dhcp

Canceling an interface

Modify DNS Settings

Modify Gateway Address

In RHEL6.0, NetworkManager replaced RHEL5.4 system-config-network.

Nm-tool command to display network connection status

Nm-connection-editor Graphics Interface

Cnetworkmanager:networkmanager command-mode interface