Linux Network configuration

One: Configure network address:

1. Configuration file:

/etc/sysconfig/network//Global configuration file, you can define hostname=; gateway=; Networking=yes;

2. Network card configuration file:/etc/sysconfig/network-scripts/ifcfg-eno16777736

Configuration single address: an interface one address;

[email protected] sysconfig]# cat network-scripts/ifcfg-eno16777736

Type=ethernet//define network type

BOOTPROTO=DHCP//define startup mode and can be none | static | DHCP | BootP

Defroute=yes

Ipv4_failure_fatal=no

Ipv6init=yes

Ipv6_autoconf=yes

Ipv6_defroute=yes

Ipv6_failure_fatal=no

name=eno16777736//network interface name is generally the string after ifcfg-;

Uuid=23a16dd1-5f74-438e-b1ef-16a0101a66eb

device=eno16777736//network interface name is generally the string after ifcfg-;

Onboot=yes//boot on or off; Value range: No | Yes

Peerdns=yes//When DHCP is enabled, whether to disable access to DNS; Value range: No | Yes

Peerroutes=yes

Ipv6_peerdns=yes

Ipv6_peerroutes=yes

Userctl=no//Normal user can enable or disable the network card; Value range: yes | No

GATEWAY=IP//Configure Gateway

Eth_opts= ""//Configure hardware Properties

[Email protected] sysconfig]#

#ethtool//commands for configuring NIC hardware properties

Configure multi-Address: One interface multiple addresses:

Configuration via command line:

#ifconfig eth0:0 IP netmask MASK

Configured with configuration files:

/etc/sysconfig/network-scripts/ifcfg-eno16777736:#//Inside the configuration is basically the same, #表示子地址;

device=eno16777736:#//network interface name is generally the string after ifcfg-;

Bootproto=static//When there is a sub-interface, can only be statically configured;

3. Configure Routing:

#route Add-host | -net network/mask GW GATEWAY//reboot will fail

To make the route added by the route permanent, you need to create the file:

By creating a file:/etc/sysconfig/network-scripts/route-eth#

Method One: Enter Inside: DESTINATION via GATEWAY

For example: Inside Input: 10.0.0.0/8 via 172.16.0.1

Method Two: In the inside input:

address#=

netmask#=

gateway#=

The # number above represents the group number, a group of group numbers should be the same; #=0,1,2, ...

For example:

address0=10.0.0.0

netmask0=255.0.0.0

gateway0=172.16.0.1

Note: The two methods can not be mixed with each other;

4. Help document:/usr/share/doc/initscripts-9.49.30/sysconfig.txt//9.49.30 version number, may be the same;

5. Network Service Script Location:

/etc/init.d/

/etc/rc.d/init.d/

Equivalent to: Service Network (Start | restart | stop)

Note: All network services are configured to take effect by restarting the service

6. View routes:

Route-n

Linux Network configuration