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

1. eth0: negotiated 100baseTx-FD, link ok

有时驱动可能不支持会出错下列错误
#mii-tool

1. SIOCGMIIPHY on 'eth0' failed: Operation not supported
2. no MII interfaces found

可以使用ethtool查看
#ethtool eth0

1. Settings for eth0:
2.         Supported ports: [ TP ]
3.         Supported link modes:   10baseT/Half 10baseT/Full
4.                                 100baseT/Half 100baseT/Full
5.                                 1000baseT/Full
6.         Supports auto-negotiation: Yes
7.         Advertised link modes:  10baseT/Half 10baseT/Full
8.                                 100baseT/Half 100baseT/Full
9.                                 1000baseT/Full
10.         Advertised auto-negotiation: Yes
11.         Speed: 100Mb/s
12.         Duplex: Full
13.         Port: Twisted Pair
14.         PHYAD: 0
15.         Transceiver: internal
16.         Auto-negotiation: on
17.         Supports Wake-on: pumbg
18.         Wake-on: g
19.         Current message level: 0x00000033 (51)
20.         Link detected: yes

Link detected: yes为正常no为失败

 

转自： http://blog.sina.com.cn/s/blog_406127500101iffg.html