查看网卡是百兆还是千兆

      网卡对于我们来说相当于家常便饭，自己买的还好，人家会告诉你是什么型号，工作环境调动，又没有人告诉你网卡信息这就需要自己辨识了，究竟怎样查看网卡是百兆还是千兆呢？通过以下几步就可以啦

使用ethtool命令

ethtool是Linux下用于查询及设置网卡参数的命令

输入指令如下所示：

root@imx6qdlsolo:~# ethtool eth0

Settings for eth0:

        Supported ports: [ TP MII ]

        Supported link modes:   10baseT/Half 10baseT/Full

                                100baseT/Half 100baseT/Full

                                1000baseT/Full

        Supported pause frame use: Symmetric

        Supports auto-negotiation: Yes

        Advertised link modes:  10baseT/Half 10baseT/Full

                                100baseT/Half 100baseT/Full

                                1000baseT/Full

        Advertised pause frame use: Symmetric

        Advertised auto-negotiation: Yes

        Link partner advertised link modes:  10baseT/Half 10baseT/Full

                                             100baseT/Half 100baseT/Full

                                             1000baseT/Full

        Link partner advertised pause frame use: Symmetric

        Link partner advertised auto-negotiation: Yes

        Speed: 1000Mb/s

        Duplex: Full

        Port: MII

        PHYAD: 1

        Transceiver: external

        Auto-negotiation: on

        Supports Wake-on: g

        Wake-on: d

        Link detected: yes

root@imx6qdlsolo:~#

详细参数参考：（//后面是注释，是原文的译文）

ethtool ethX /

ethtool –h //显示ethtool的命令帮助(help)

ethtool –i ethX //查询ethX网口的相关信息

ethtool –d ethX //查询ethX网口注册性信息

ethtool –r ethX //重置ethX网口到自适应模式

ethtool –S ethX //查询ethX网口收发包统计

ethtool –s ethX [speed 10|100|1000]\ //设置网口速率10/100/1000M

[duplex half|full]\ //设置网口半/全双工

[autoneg on|off]\ //设置网口是否自协商

[port tp|aui|bnc|mii]\ //设置网口类型

如果对你有帮助的话，就推一下博主吧！