ethtool-一个网卡配置的小工具

ethtool – Display or change ethernet card settings(ethtool 是用来显示和更改网卡设置的工具
1 ethtool 显示网络端口设置功能;

这个功能比较好办。就是ethtool 后面直接接网絽接口就行;比如下面的例子;

[[email protected] ~]# ethtool eth0
Settings for eth0:
        Supported ports: [ TP MII ]
        Supported link modes: 10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes: 10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Advertised auto-negotiation: No 注:自动协商关闭
        Speed: 100Mb/s 注:速度 100Mb
        Duplex: Full 注:全双工
        Port: MII
        PHYAD: 32
        Transceiver: internal
        Auto-negotiation: off
        Supports Wake-on: pumbg
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: yes 注:eth0已经激活;

2 ethtool 设置网卡的协商模式;

在ethtool的-h帮助中我们查看到有这样的帮助信息;

ethtool -s DEVNAME \
                [ speed 10|100|1000 ] \
                [ duplex half|full ] \
                [ port tp|aui|bnc|mii|fibre ] \
                [ autoneg on|off ] \
 

* 实例一: 把网卡eth0 速度改为10Mb/s,采用半双工;

[[email protected] beinan]# ethtool -s eth1 speed 10 duplex half
[[email protected] beinan]# ethtool eth1
Settings for eth1:
        Supported ports: [ TP MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Advertised auto-negotiation: No
        Speed: 10Mb/s 注:速度 10M/s
        Duplex: Half  注:半双工
        Port: MII
        PHYAD: 32
        Transceiver: internal
        Auto-negotiation: off
        Supports Wake-on: pumbg
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: no 注:eth1没有激活;

* 实例二: 把网卡eth0 速度改为100Mb/s,采用全双工;

[[email protected] beinan]# ethtool -s eth1 speed 100 duplex full
[[email protected] beinan]# ethtool eth1
Settings for eth1:
        Supported ports: [ TP MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Advertised auto-negotiation: No
        Speed: 100Mb/s  注:速度 100M/s
        Duplex: Full 注:全双工
        Port: MII
        PHYAD: 32
        Transceiver: internal
        Auto-negotiation: off
        Supports Wake-on: pumbg
        Wake-on: d
        Current message level: 0x00000007 (7)
        Link detected: no 注:eth1网卡没有激活;

发表评论

您的电子邮箱地址不会被公开。 必填项已用*标注