PVE (Proxmox VE) Multi-port Identification

This is a post about network card (multiple ports) identification in the PVE system. Through the ethtool command, you can easily find the corresponding location of each network port.

Take Intel EXPI9402PTBLK 82571GB Network Adapter as an example

Install the ethtool command

apt update && apt install ethtool -y

ethtool can be used to view network device driver parameters and hardware configuration.

Check the device name of the network card in the PVE server

ip -c a

Where enp1s0f0 and enp1s0f1 are the two network ports of the network card, corresponding to MAC addresses 00:24:81:7e:ce:cb and 00:24:81:7e:ce:ca respectively.

Use ethtool to identify the device name and corresponding network port location in the PVE system.

Enter the following command to find the physical network port (network port with indicator) of the first device name enp1s0f0

ethtool --identify enp1s0f0

Enter the following command to find the physical network port (network port with indicator) of the second device name enp1s0f1

ethtool --identify enp1s0f1

If the network card does not support the ethtool --identify command (indicator) for identification, the following method can be used.

Enable the two network ports enp1s0f0 and enp1s0f1 separately

ifup enp1s0f0
ifup enp1s0f1

Insert the network cable (Cat5e) into one of the network ports of the network card (Intel EXPI9402PTBLK 82571GB) and the other end of the network cable into another powered network port, such as a switch, router, computer, etc.

At this time, enter the command to view the network port status

ethtool enp1s0f0

As shown in the figure, Link detected: yes indicates that the found network port is enp1s0f0.

On the contrary, it shows Link detected: no, indicating the network port enp1s0f1 without a cable.

When directly passing a specified network port, ethtool can easily find the location of the network port in the PVE system.

View all physical network cards and locations of the server

lspci | grep -in 'eth'

View the location of the first network port enp1s0f0

ethtool -i enp1s0f0

View the location of the second network port enp1s0f1

ethtool -i enp1s0f1

As shown in the figure, the location of the first network port enp1s0f0 is 01:00.0, and the location of the second network port enp1s0f1 is 01:00.1.

Finally, pass through the specified network card or network port in the virtual machine.

Using ethtool to identify multiple network ports of a network card is really convenient.

Finally, a corresponding table can be made to facilitate future lookups.

圖哥-通用PVE AIO安装教程

• Proxmox VE 01 - 系統安裝篇
• 遷移 VMware ESXi 的 ova 文件到 Proxmox 7.0
• PVE 的 LXC 容器系統安裝 CUPS 軟件，實現多平台共享的印表機
• Proxmox VE 7 安裝Home Assistant虛擬機系統
• Managing LXC in Proxmox Virtual Environment (PVE)
• Configuring VLANs on a Host for Proxmox VE