weird network speed issues

[why-be-banned]

system: proxmox VE 7.4-3, fresh install
8156b usb network card, 2.5Gbps port.

root@pve:~# cat /etc/network/interfaces
auto lo
iface lo inet loopback

iface enx00e04c68117e inet manual

auto vmbr0
iface vmbr0 inet static
        address 192.168.3.131/24
        gateway 192.168.3.1
        bridge-ports enx00e04c68117e
        bridge-stp off
        bridge-fd 0

iface enp0s31f6 inet manual

iface wlp1s0 inet manual

root@pve:~# ethtool enx00e04c68117e
Settings for enx00e04c68117e:
        Supported ports: [  ]
        Supported link modes:   Not reported
        Supported pause frame use: No
        Supports auto-negotiation: No
        Supported FEC modes: Not reported
        Advertised link modes:  Not reported
        Advertised pause frame use: No
        Advertised auto-negotiation: No
        Advertised FEC modes: Not reported
        Speed: 2500Mb/s
        Duplex: Half
        Auto-negotiation: off
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        MDI-X: Unknown
        Current message level: 0x00000007 (7)
                               drv probe link
        Link detected: yes

I use iperf3 to test network speed, sending data from other computers to proxmox VE host / VM is slow.

 

[Moayad]

Hi,

May you post the output of the following command:

dmesg | grep enx

And also post the VM config?

 

[why-be-banned]

Hi,

May you post the output of the following command:

dmesg | grep enx

And also post the VM config?

Thank you for your reply. Please see my second screenshot, without any VM installed and running, the network speed is still slow.

I followed this guide https://post.smzdm.com/p/alxzo398/ to solved this problem. There is a problem with the network card driver that comes with proxmox VE. Manually installing the official driver will solve it.

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