【Linux/CentOS】ifconfig输出的含义

[hy@localhost ~]$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
　　ens33:代表网卡，有些系统上是eth0，有些系统是ens192
　　UP：表示开放的
　　BROADCAST:表示支持广播
　　RUNNING：已被系统识别
　　MULTICAST：支持多路传送

        inet 192.168.32.128  netmask 255.255.255.0  broadcast 192.168.32.255
inet：IP地址，netmask：子网掩码，broadcast：广播地址

        inet6 fe80::3a1c:e273:b2de:bb84  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:5a:16:59  txqueuelen 1000  (Ethernet)
        RX packets 3605  bytes 3652104 (3.4 MiB)
RX:Received 收到数据包
        RX errors 0  dropped 0  overruns 0  frame 0
这一行表示接收错误的

        TX packets 1960  bytes 177393 (173.2 KiB)
TX：Transfer 发送数据包
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
这一行表示接收错误的


lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
lo：本地环回接口，UP：开放，LOOPBACK：环回，RUNNING：已被系统识别

        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 19336  bytes 1634680 (1.5 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 19336  bytes 1634680 (1.5 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
Virbr0：虚拟机创建的桥接网卡 ，Up：开放，BROADCAST：广播，MULTICAST：多播

        ether 52:54:00:a0:4b:c9  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0