linux查看网卡速度和模式调整

来源：互联网发布：龙誉移动大数据平台编辑：程序博客网时间：2024/06/16 05:57

[root@c02b03 ~]#  ethtool eth0Settings for eth0:        Supported ports: [ FIBRE ]        Supported link modes:   1000baseT/Full         Supports auto-negotiation: Yes        Advertised link modes:  1000baseT/Full         Advertised pause frame use: Symmetric        Advertised auto-negotiation: Yes        Speed: Unknown!        Duplex: Unknown! (255)        Port: FIBRE        PHYAD: 0        Transceiver: internal        Auto-negotiation: on        Supports Wake-on: pumbg        Wake-on: g        Current message level: 0x00000003 (3)        Link detected: no[root@c02b03 ~]#  ethtool eth1Settings for eth1:        Supported ports: [ FIBRE ]        Supported link modes:   1000baseT/Full         Supports auto-negotiation: Yes        Advertised link modes:  1000baseT/Full         Advertised pause frame use: Symmetric        Advertised auto-negotiation: Yes        Speed: 1000Mb/s        Duplex: Full        Port: FIBRE        PHYAD: 0        Transceiver: internal        Auto-negotiation: on        Supports Wake-on: d        Wake-on: d        Current message level: 0x00000003 (3)        Link detected: yes

或者老的mii-tool命令(但是该命令似乎只能识别100M及以下网卡)亦可。

其中, Duplex: Full表示全双工(FD)，half表示半双工(HD)， Auto-negotiation 后边表示是否自动协商

可以通过修改/etc/sysconfig/network-scripts/ifcfg-eth0文件中的

ETHTOOL_OPTS="speed 100 duplex full autoneg off"

参数进行设置，使用ifup和ifdown来测试

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