网卡绑定多个IP地址-秋风落叶

一个网卡一个IP

[root@wj conf]# ip addr show enp2s0
2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:1b:b8:35 brd ff:ff:ff:ff:ff:ff
    inet 172.16.51.129/24 brd 172.16.51.255 scope global noprefixroute enp2s0
       valid_lft forever preferred_lft forever
    inet6 fe80::afe0:4aff:cfbe:d377/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

一个网卡两个IP

#临时添加
[root@wj conf]# ip addr add 172.16.51.130/24 dev enp2s0
[root@wj conf]# ip addr show enp2s0
2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:1b:b8:35 brd ff:ff:ff:ff:ff:ff
    inet 172.16.51.129/24 brd 172.16.51.255 scope global noprefixroute enp2s0
       valid_lft forever preferred_lft forever
    inet 172.16.51.130/24 scope global secondary enp2s0
       valid_lft forever preferred_lft forever
    inet6 fe80::afe0:4aff:cfbe:d377/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
#IP添加成功可以ping通
[root@wj conf]# ping 172.16.51.130
PING 172.16.51.130 (172.16.51.130) 56(84) bytes of data.
64 bytes from 172.16.51.130: icmp_seq=1 ttl=64 time=0.041 ms
64 bytes from 172.16.51.130: icmp_seq=2 ttl=64 time=0.083 ms
64 bytes from 172.16.51.130: icmp_seq=3 ttl=64 time=0.088 ms

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