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以太网电缆连接速度慢 - 由于“链接伙伴通告的链接模式”速度慢？

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以太网电缆连接速度慢 - 由于“链接伙伴通告的链接模式”速度慢？

我在一台新笔记本电脑上使用 Ubuntu 20.04.3 LTS。我的以太网连接似乎被限制在 100MB/s，我想将其更改为 1000MB/s。我曾尝试使用以太网来实现这一点。这是我在执行任何操作之前 ethtools 的统计输出：

Settings for eno1:
    Supported ports: [ TP MII ]
    Supported link modes:   10baseT/Half 10baseT/Full 
                            100baseT/Half 100baseT/Full 
                            1000baseT/Full 
    Supported pause frame use: Symmetric Receive-only
    Supports auto-negotiation: Yes
    Supported FEC modes: Not reported
    Advertised link modes:  10baseT/Half 10baseT/Full 
                            100baseT/Half 100baseT/Full 
                            1000baseT/Full 
    Advertised pause frame use: Symmetric Receive-only
    Advertised auto-negotiation: Yes
    Advertised FEC modes: Not reported
    Link partner advertised link modes:  10baseT/Half 10baseT/Full 
                                         100baseT/Half 100baseT/Full 
    Link partner advertised pause frame use: Symmetric Receive-only
    Link partner advertised auto-negotiation: Yes
    Link partner advertised FEC modes: Not reported
    Speed: 100Mb/s
    Duplex: Full
    Port: Twisted Pair
    PHYAD: 0
    Transceiver: internal
    Auto-negotiation: on
    MDI-X: Unknown
    Supports Wake-on: pumbg
    Wake-on: d
    Link detected: yes

我尝试使用以下命令将速度设置为 1000，但是，我立即失去连接并且输出变为未知：

user:~$ sudo ethtool -s eno1 speed 1000 duplex full
user:~$ sudo ethtool eno1
Settings for eno1:
    Supported ports: [ TP MII ]
    Supported link modes:   10baseT/Half 10baseT/Full 
                            100baseT/Half 100baseT/Full 
                            1000baseT/Full 
    Supported pause frame use: Symmetric Receive-only
    Supports auto-negotiation: Yes
    Supported FEC modes: Not reported
    Advertised link modes:  1000baseT/Full 
    Advertised pause frame use: Symmetric Receive-only
    Advertised auto-negotiation: Yes
    Advertised FEC modes: Not reported
    Speed: Unknown!
    Duplex: Unknown! (255)
    Port: Twisted Pair
    PHYAD: 0
    Transceiver: internal
    Auto-negotiation: on
    MDI-X: Unknown
    Supports Wake-on: pumbg
    Wake-on: d
    Link detected: no

我猜想这是因为“链接合作伙伴公布的链接模式”在将速度设置为 1000 之前不包括 1000baseT/Full。但是，我的互联网提供商发誓这不是他们的路由器的问题。在我的旧公寓里，使用我的旧电脑，以太网电缆可以轻松处理 1000MBit/s。

谁知道这里可能出了什么问题？

答案1

输出ethtool清楚地显示插入端口的以太网电缆另一端的设备eno1仅支持 100 MBit/s 的最大速度。要解决此问题：

  • 检查电缆插在哪里。
  • 如果是交换机，请将其替换为具有千兆位功能的型号。
  • 如果是您的互联网提供商的路由器，请再次与您的提供商联系并告知您的ethtool结果。

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