ethtool命令用于查询或设置网卡参数。 ethtool [devname]
[root@linuxprobe ~]# ethtool eth0 Settings for eth0:  Supported ports: [ TP ]  Supported link modes: 10baseT/Half 10baseT/Full                           100baseT/Half 100baseT/Full                           1000baseT/Full   Supported pause frame use: No  Supports auto-negotiation: Yes  Supported FEC modes: Not reported  Advertised link modes: 10baseT/Half 10baseT/Full                           100baseT/Half 100baseT/Full                           1000baseT/Full   Advertised pause frame use: No  Advertised auto-negotiation: Yes  Advertised FEC modes: Not reported  Speed: 1000Mb/s  Duplex: Full  Port: Twisted Pair  PHYAD: 0  Transceiver: internal  Auto-negotiation: on  MDI-X: off (auto)  Supports Wake-on: umbg  Wake-on: d  Current message level: 0x00000007 (7)           drv probe link  Link detected: yes
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