Linux Network card Configuration detailed

The following values are common in all basic configuration files:

* Device=name, where name is the name of the physical device (except for dynamically assigned PPP devices)

Its name is "logical name."

* Ipaddr=addr, here addr is the IP address.

* Netmask=mask, here Mask is a netmask.

* Network=addr, here addr is the network address.

* Broadcast=addr, here addr is the broadcast address.

* Gateway=addr, here addr is the gateway address.

* Onboot=answer, here answer take one of the following values:

o Yes-this device will be activated at boot time.

o No-this device is not activated when boot.

* Userctl=answer, here answer take one of the following values:

o Yes-a non-root user can control the device.

o No-the device is not allowed to be controlled by a non-root user.

* Bootproto=proto, here Proto take one of the following values:

o None--does not use the boot-time protocol.

o BOOTP-use BOOTP protocol.

o DHCP-use DHCP protocol.

Terminal: Query IP address: ifconfig-a

To modify the LAN IP:

1. Log in as Root

2. Modify the configuration file

/etc/sysconfig/network-scripts/ifcfg-eth0

The contents of the document are as follows:

Device=eth0

Hwaddr=00:0c:29:a2:8c:b2

Onboot=yes

Type=ethernet

netmask=255.255.255.0

ipaddr=192.168.1.11-> modified to 192.168.1.12

gateway=192.168.1.1

Reboot

ifconfig eth0 New IP then edit/etc/sysconfig/network-scripts/ifcfg-eth0, modify IP

ifconfig eth0 New IP

Then edit/etc/sysconfig/network-scripts/ifcfg-eth0, modify IP

First, modify the IP address

[Aeolus@db1 network-scripts]$ VI Ifcfg-eth0

Device=eth0

Onboot=yes

Bootproto=static

ipaddr=219.136.241.211

netmask=255.255.255.128

gateway=219.136.241.254

Second, modify the gateway

Vi/etc/sysconfig/network

Networking=yes

Hostname=aaron

gateway=192.168.1.1

Third, modify DNS

[Aeolus@db1 etc]$ VI resolv.conf

NameServer 202.96.128.68

NameServer 219.136.241.206

Four, restart network configuration

/etc/init.d/network restart

Modify IP Address

Immediate effect:

# ifconfig eth0 192.168.0.20 netmask 255.255.255.0

Start in effect:

Modify/etc/sysconfig/network-scripts/ifcfg-eth0

Modify the default gateway

Immediate effect:

# route add default GW 192.168.0.254

Start in effect:

Modify/etc/sysconfig/network-scripts/ifcfg-eth0

Modify DNS

Modify/etc/resolv.conf

Can be effective immediately after modification

Modify Host Name

Immediate effect:

# hostname FC2

Start in effect:

Modify/etc/sysconfig/network