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单网卡、双ip

指尖二进制 • 1 年前 • 759 次点击 • LINUX

查看当前系统的ip地址和网卡的设备名

[root@bogon network-scripts]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.180  netmask 255.255.254.0  broadcast 192.168.1.255
        inet6 fe80::20c:29ff:fe2a:1994  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:2a:19:94  txqueuelen 1000  (Ethernet)
        RX packets 12436  bytes 14219464 (13.5 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 5424  bytes 493467 (481.9 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 1  bytes 152 (152.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1  bytes 152 (152.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eno16777736网卡在原有基础之上，再去添加一个ip地址。
修改配置文件ifcfg-eno16777736:1

[root@bogon network-scripts]# cat ifcfg-eno16777736:1
DEVICE=eno16777736:1
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.111.101
NETMASK=255.255.255.0
GATEWAY=192.168.111.1

重启设备

/etc/init.d/network restart

查看两个地址

[root@bogon network-scripts]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.180  netmask 255.255.254.0  broadcast 192.168.1.255
        inet6 fe80::20c:29ff:fe2a:1994  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:2a:19:94  txqueuelen 1000  (Ethernet)
        RX packets 13271  bytes 14288552 (13.6 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 5502  bytes 502967 (491.1 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eno16777736:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.111.101  netmask 255.255.255.0  broadcast 192.168.111.255
        ether 00:0c:29:2a:19:94  txqueuelen 1000  (Ethernet)

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 1  bytes 152 (152.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1  bytes 152 (152.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

测试，192.168.111.1一直ping 192.168.111.101 和192.168.1.180。
在192.168.1.180服务器ifdown eno16777736

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