Ifconfig of network configuration and detailed description of IP commands

• Ipconfig

• -A shows the configuration of all interfaces

• Ifconfig eth0 display configuration of eth0

  • Ifconfig eht0 ip/mask[up|down]\

The configured address takes effect immediately, but fails to restart the Network service or host

Network Services

RHEL5:/etc/init.d/network {start|stop|restasrt|status}

RHEL6:/etc/init.d/networkmanager | {Start|stop|restasrt|status}

• Note: {Start|stop|restasrt|status} is a parameter

Gateway:

Route routing

Route add: Add route

-host: Adding host routes

-net: Adding network routes

-net 0.0.0.0 Add a default route

Liezi:

Route Add-net | -host DEST GW Nexthop

Route add default GW nexthop

Route del: Delete route

-host

-net

Liezi:

Route Del-net 10.0.0.0/8

Route Del-net 0.0.0.0

Routel del Default

Note: The route command looks at the native routing table

Route-n Digital display of information about each host or port

Note: Changes made to restart the Network service or host after the failure

Network configuration file:

[Email protected] ~]# cat/etc/sysconfig/network

Network Interface configuration file:

[Email protected] ~]# Cat/etc/sysconfig/network-scripts/ifcfg-eth0

The configuration file is as follows:

[Email protected] ~]# cd/etc/sysconfig/network-scripts/[[email protected] network-scripts]# cat Ifcfg-eth0

IPADDR=:IP address netmask=: Subnet mask gateway=: Set default gateway Userctl={yes | No}: Allow normal user to control this interface Peerdns={yes | NO}: The DNS address specified by the DHCP server is accepted when Bootproto is DHCP; [email protected] network-scripts]#

Note: Changing the configuration in the configuration file will not take effect immediately, but restarting the network service or host will take effect;

Restart Network Service:

[Email protected] network-scripts]#/etc/init.d/network restart

The DNS server specifies only one method:

[Email protected] ~]# cat/etc/resolv.conf

nameserver dns_ip_1

NameServer dns_ip_2

This article is from the "Linux Operations Technology Exchange" blog, please be sure to keep this source http://linuxzhang.blog.51cto.com/2580498/1673924

Ifconfig of network configuration and detailed description of IP commands