Proxmox two NIC, two bridges, DHCP.

CountryUser14

New Member
Aug 23, 2023
2
0
1
Hello forum members/staff!

I'm currently hunting for a weird restart error, but stumbled upon multiple pages on the forums, which would point that my Proxmox network configuration isn't correct at the moment. I'm using an onboard NIC, and a card in my server. Ideally, I would want the card to be used for VM traffic, and the onboard NIC for management. In my setup, I'm in a VLAN, and I have 10.254.40.0/24 assigned to me. Proxmox is assigned to 10.254.40.101. I created vmbr1 manually, and assigned the network card to it. Then, for my VMs I added vmbr1 as the network device. I'm using DHCP to assign addresses to Proxmox, and to my VMs for port forwarding. I copy-pasted my current configuration. Could someone please review the configuration? To my understanding it's correct, but someone might see something different. Thank you!

Code:
auto lo
iface lo inet loopback

iface eno1 inet manual

iface enp3s0 inet manual

auto vmbr0
iface vmbr0 inet dhcp
#iface vmbr0 inet manual
        bridge-ports eno1
        bridge-stp off
        bridge-fd 0

auto vmbr1
iface vmbr1 inet manual
# iface vmbr1 inet manual
        bridge-ports enp3s0
        bridge-stp off
        bridge-fd 0
 
Last edited:
the configuration seem to be correct, but I am not sure for the configuration in dhcp, can you try with iface vmbr0 inet static? then address 192.168.x.y/24 (or similar)?
vlan are tagged or untagged?
 
In theory there is no difference but in fact the DHCP is a systme server that can have problemes. So to try with a static address is only a metod to exclude DHCP problems. Please tell us exatly what is non working.
 

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