linux下用mii-tool和ethtool 查看网线是否正确连接到网卡

输入mii-tool可以查看网线是否连接到网卡 #mii-tool

eth0: negotiated 100baseTx-FD, link ok

有时驱动可能不支持会出错下列错误 #mii-tool

SIOCGMIIPHY on ‘eth0’ failed: Operation not supported no MII interfaces found

可以使用ethtool查看 #ethtool eth0

Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised auto-negotiation: Yes Speed: 100Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: pumbg Wake-on: g Current message level: 0x00000033 (51) Link detected: yes

Link detected: yes为正常no为失败