查看網卡是百兆還是千兆

我們查看網卡是百兆還是千兆的時候可以使用ethtool命令
ethtool是Linux下用於查詢及設置網卡參數的命令
輸入指令如下所示：
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:~#

詳細參數參考：（//後面是註釋，是原文的譯文）
ethtool ethX /
ethtool –h //顯示ethtool的命令幫助(help)
ethtool –i ethX //查詢ethX網口的相關信息
ethtool –d ethX //查詢ethX網口註冊性信息
ethtool –r ethX //重置ethX網口到自適應模式
ethtool –S ethX //查詢ethX網口收發包統計
ethtool –s ethX [speed 10|100|1000] //設置網口速率10/100/1000M
[duplex half|full] //設置網口半/全雙工
[autoneg on|off] //設置網口是否自協商
[port tp|aui|bnc|mii] //設置網口類型
在這之後我們就可以查看網卡是百兆還是千兆了。
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