Unable to Ping Gateway on Proxmox Server

[Kajal Upadhyay]

Hi Team,


I’m new to Proxmox and have recently installed it on a mini PC. I configured a static IP address and completed the basic setup, but I’m unable to ping my gateway. Could you please help me troubleshoot and identify the issue?


Thank you for your assistance.

 

[bl1mp]

Hi Kajal,
can you post the content of /etc/network/interfaces ?

BR, Lucas

 

[Kajal Upadhyay]

Hi,
PFA

 

[cwt]

Quad port NIC. Did you select the correct physical port for your connection on enp1s0? What‘s the output of:

ip a

 

[Kajal Upadhyay]

PFA

 

[ThoSo]

Check cable and router port.
Any other devices in this network reachable ?
Pve reachable from other devices via ping?
Firewall?

 

[Kajal Upadhyay]

My cabling appears to be fine, and other machines on the same subnet can reach the internet and the gateway without any issues. However, my Proxmox server is unable to reach the gateway or any other devices on the same subnet — it can only ping itself.

 

[cwt]

Then I would check if you selected the wrong port of your NIC.

 

[ThoSo]

Can you check the NIC with a Live Linux Image?
Change Port on the nic for a test.
Make a fresh install.

 

[Kajal Upadhyay]

I have performed a fresh installation of Proxmox VE on my mini PC, but I am still facing an issue where I am unable to ping my gateway or any other machines within the same network. Despite following the standard installation process and configuring the network interface (Eth0) during setup, the issue persists.

 

[Kajal Upadhyay]

Additionally, I have observed that only the eth0 interface becomes active. When I connect the LAN cable to other interfaces (e.g., eth1, eth2, etc.), there is no link light or network activity; those interfaces remain down. Only eth0 shows a blinking link light and comes up, but even then, I still cannot reach the gateway.

I will share snapshots shortly to show that other machines on the same network are able to ping both the gateway and each other successfully. The issue seems isolated to the Proxmox host.

 

[Kajal Upadhyay]

This is the snapshot showing the connection status when I connect the LAN cable to the eth0 interface — it becomes active and shows a link. However, when I connect the cable to any of the other interfaces (e.g., eth1, eth2, etc.), they remain down and show no link or network activity.

It appears that Proxmox is detecting the network card, but not establishing communication beyond its own interface. I would appreciate any guidance on what could be causing this issue or if there are specific drivers or configurations I should check.

 

[ThoSo]

However, when I connect the cable to any of the other interfaces (e.g., eth1, eth2, etc.), they remain down and show no link or network activity.

the other interface are not connected to the bridge (vmbr0) -> bridge Ports, - that's default
You can chnage that :
bridge-ports enp1s0 enp2s0 ....
and test

Do you become a DHCP Address using a Live Distri?

What kind of Hardware ist you MINI PC?
Please post more details from you Hardware - we can not only look at the MINI PC!

Are you sure that your Router / switch / cables are OK? - Can you connect more LAN Ports from the Mini to a switch?

 

[Kajal Upadhyay]

I’m currently using a Skullsaints Onyx 12th Gen N100 fanless mini PC. I’ve connected additional LAN ports, but only eth0 is functioning. The other Ethernet interfaces are not being detected or are active.

Could you please advise on how to enable or configure the additional LAN ports?

 

[ThoSo]

That one ?
https://www.flipkart.com/skullsaint...-ddr5-256-m-2-nvme-mini-pc/p/itm8fd2bf5722d2e

Network Port Available

4 x 2.5Gbps, Intel i226V LAN Port

Check this post : https://forum.proxmox.com/threads/c...ontroller-i226-v-with-asus-nuc14rvhu5.159052/

 

[Kajal Upadhyay]

Yes the same one i am using