如何新增刪除子網絡卡eth0:1(linux案例)
這種方法實現了單網絡卡多IP,我的系統是centos7的,如何新增刪除子網絡卡IP詳細請看下面操作例子
新增子網絡卡IP:ifconfig ens3:1 192.168.0.100/24 //ens3是網絡卡配置名
刪除子網絡卡IP:ifconfig etns3:1 down
[[email protected] ~]# ip a //先檢視自己本機網絡卡配置名
...
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
//ens3就是我的預設網絡卡配置名, 系統識別的網絡卡標識名一般是eth0,而我們要用配置名
link/ether 52:54:00:5a:3b:54 brd ff:ff:ff:ff:ff:ff //很多人的是eth0這樣的
inet 192.168.0.66/24 brd 192.168.0.255 scope global ens3
....
[[email protected] ~]# nmcli device status //這個命令也可以檢視到ens3
裝置 型別 狀態 CONNECTION
ens3 ethernet 連線的 eth0
....
--新增子IP(可以新增多個)
[[email protected] ~]# ifconfig ens3:1 192.168.0.100/24 //ens3加個:再加數字標識,再加IP,/24字網掩碼縮寫格式
[[email protected] ~]# ifconfig ens3:7 192.168.0.161/24 //數字7只是起標識作用,可以自定
[[email protected] ~]# ip a //檢視效果,生效了就可以ping通了
....
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:5a:3b:54 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.66/24 brd 192.168.0.255 scope global ens3
valid_lft forever preferred_lft forever
inet 192.168.0.100/24 brd 192.168.0.255 scope global secondary ens3:1 //檢視剛配的已經生效了
valid_lft forever preferred_lft forever
inet 192.168.0.161/24 brd 192.168.0.255 scope global secondary ens3:7 //檢視剛配的已經生效了
valid_lft forever preferred_lft forever
......
[[email protected] ~]# ping 192.168.0.161 //生效了就可以ping通了
PING 192.168.0.161 (192.168.0.161) 56(84) bytes of data.
64 bytes from 192.168.0.161: icmp_seq=1 ttl=64 time=0.034 ms
64 bytes from 192.168.0.161: icmp_seq=2 ttl=64 time=0.044 ms
......
--刪除子IP
[[email protected] ~]# ifconfig ens3:7 down
[[email protected] ~]# ip a //檢視沒有那一項IP了
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:5a:3b:54 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.66/24 brd 192.168.0.255 scope global ens3
valid_lft forever preferred_lft forever
inet 192.168.0.100/24 brd 192.168.0.255 scope global secondary ens3:1
valid_lft forever preferred_lft forever
inet6 fe80::5054:ff:fe5a:3b54/64 scope link
valid_lft forever preferred_lft forever
3: ens9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:ac:74:21 brd ff:ff:ff:ff:ff:ff
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