Shulou(Shulou.com)06/02 Report--

Modify the / etc/sysconfig/network-scripts/ifcfg-eth0 file and connect with xshell

# # simplify the system source files after installation # #

DEVICE=eth0

HWADDR=00:0C:29:20:48:74

TYPE=Ethernet

UUID=d8aaed80-c43f-4636-8266-f1f9cc19e075

ONBOOT=no

NM_CONTROLLED=yes

BOOTPROTO=dhcp

# # examples of modified contents of general files # #

DEVICE=eth0

HWADDR=00:0C:29:20:48:74

TYPE=Ethernet

UUID=d8aaed80-c43f-4636-8266-f1f9cc19e075

ONBOOT=yes

NM_CONTROLLED=yes

BOOTPROTO=status

IPADDR=192.168.8.20

NETMASK=255.255.255.0

GETWAY=192.168.8.1

DNS11=192.168.8.1

# # General instructions # #

TYPE=Ethernet # Network Card Type

DEVICE=eth0 # Nic interface name

Does ONBOOT=yes # automatically load when the system starts?

BOOTPROTO=static # enable address protocol-- static: static protocol-- bootp protocol-- dhcp protocol

IPADDR=192.168.1.11 # Network Card IP address

NETMASK=255.255.255.0 # Network Card Network address

GATEWAY=192.168.1.1 # Network Card Gateway address

DNS1=10.203.104.41 # Network Card DNS address

HWADDR=00:0C:29:13:5D:74 # Network Card device MAC address

BROADCAST=192.168.1.255 # Network Card broadcast address

# # more detailed instructions # #

Name of DEVICE= "eth2" network card

Whether the parameters of NM_CONTROLLED= "yes" network mamager can be hosted by NNetwork Manager.

HWADDR= MAC address

TYPE=Ethernet Typ

PREFIX=24 subnet mask 24 bits

DEFROUTE=yes is default route. Whether to set this eth as the default route.

ONBOOT=yes is set to yes, and the network connection is automatically enabled when the system is powered on.

IPADDR= IP address

BOOTPROTO=none is set to none to disable DHCP, set to static to enable static IP address, and set to dhcp to enable DHCP service

NETMASK=255.255.255.0 subnet mask

DNS1=8.8.8.8 's first dns server

BROADCAST broadcast

UUID unique ID

TYPE=Ethernet network type is: Ethernet

BRIDGE= sets bridge network card

GATEWAY= Settings Gateway

DNS2=8.8.4.4 # second dns server

IPV6INIT=no forbids IPV6

Whether USERCTL=no allows non-root users to control the device, set to no, and can only be changed by root users.

NAME= "System eth2" is the name of a network connection.

MASTER=bond1 specifies the name of the master

SLAVE specifies that the interface is a component of an interface.

NETWORK network address

ARPCHECK=yes detection

Whether PEERDNS allows the DNS obtained by DHCP to override the local DNS

Whether PEERROUTES obtains a routing table entry from the DHCP server that defines the information for the default gateway of the interface

Whether IPV6INIT enables the interface of IPv6.

IPV4_FAILURE_FATAL=yes disable the device if ipv4 configuration fails

IPV6_FAILURE_FATAL=yes disable the device if ipv6 configuration fails

Re-import the ifcfg-eth0 network profile

[root@localhost ~] # / etc/init.d/network reload

Shutting down interface eth0: [OK]

Shutting down loopback interface: [OK]

Bringing up loopback interface: [OK]

Bringing up interface eth0: [OK]

Nic interface shutdown and activation

[root@localhost ~] # ifdown eth0 # shut down the network

[root@localhost ~] # ifup eth0 # start the network

Network service startup and shutdown

Method 1:

[root@localhost ~] # service network stop # turn off the network service

[root@localhost ~] # service network start # start the network service

[root@localhost ~] # service network restart # restart the network service

Method 2:

[root@localhost ~] # / etc/init.d/network stop

[root@localhost ~] # / etc/init.d/network start

[root@localhost ~] # / etc/init.d/network restart

Network card status query

[root@localhost ~] # service network status

Configured devices:

Lo eth0

Currently active devices:

Lo eth0

Temporary configuration of network card information, no need to restart.

[root@localhost ~] # ifconfig eth0 10.1.1.10 netmask 255.0.0.0

View the interface information of the network card. All interfaces are listed by default.

[root@localhost ~] # ifconfig

Eth0 Link encap:Ethernet HWaddr 00:0C:29:13:5D:74

Inet addr:192.168.1.11 Bcast:192.168.1.255 Mask:255.255.255.0

Inet6 addr: fe80::20c:29ff:fe13:5d74/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:413 errors:0 dropped:0 overruns:0 frame:0

TX packets:572 errors:0 dropped:0 overruns:0 carrier:0

Collisions:0 txqueuelen:1000

RX bytes:47701 (46.5 KiB) TX bytes:64842 (63.3 KiB)

Base address:0x2000 Memory:d8920000-d8940000

Lo Link encap:Local Loopback

Inet addr:127.0.0.1 Mask:255.0.0.0

Inet6 addr: 1/128 Scope:Host

UP LOOPBACK RUNNING MTU:16436 Metric:1

RX packets:407 errors:0 dropped:0 overruns:0 frame:0

TX packets:407 errors:0 dropped:0 overruns:0 carrier:0

Collisions:0 txqueuelen:0

RX bytes:70759 (69.1 KiB) TX bytes:70759 (69.1 KiB)

View current route and gateway information

[root@localhost ~] # netstat-r

Kernel IP routing table

Destination Gateway Genmask Flags MSS Window irtt Iface

192.168.1.0 * 255.255.255.0 U 000 eth0

169.254.0.0 * 255.255.0.0 U 000 eth0

Default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0

DNS:

Hostname: CentOS

Master DNS:202.106.46.151

Second DNS:202.106.0.20

The third DNS:8.8.8.8

Network configuration:

Eth0

Static ip:192.168.1.106

Subnet mask 255.255.255.0

Default gateway IP 192.168.1.1

DEVICE=eth0

IPADDR=192.168.1.106

NETMASK=255.255.255.0

BROADCAST=192.168.1.255

ONBOOT=yes

BOOTPROTO=none

GATEWAY=192.168.1.1

TYPE=Ethernet

"/ etc/sysconfig/network-scripts/ifcfg-eth0" 11L, 187C

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