Proxmox managment via VLAN not working

[Forse]

Hello,

I want to manage proxmox via the IP address 192.168.121.121:8006 and I want to set up multiple VLANs (different IP addresses) for other VMs. I still don't working proxmox management via VLAN.

Linux Bridge (vmbr0) without Linux VLAN (vlan100) - WORKING

/etc/network/interfaces

auto lo
iface lo inet loopback

auto eno1
iface eno1 inet manual

auto eno2
iface eno2 inet manual

auto bond0
iface bond0 inet manual
    bond-slaves eno1 eno2
    bond-miimon 100
    bond-mode active-backup
    bond-primary eno1

auto vmbr0
iface vmbr0 inet manual
    address 192.168.121.121/24
    gateway 192.168.121.1
    bridge-ports bond0
    bridge-stp off
    bridge-fd 0

Linux Bridge (vmbr0) with Linux VLAN (vlan100) - NOT WORKING

/etc/network/interfaces

auto lo
iface lo inet loopback

auto eno1
iface eno1 inet manual

auto eno2
iface eno2 inet manual

auto bond0
iface bond0 inet manual
    bond-slaves eno1 eno2
    bond-miimon 100
    bond-mode active-backup
    bond-primary eno1

auto vmbr0
iface vmbr0 inet manual
    bridge-ports bond0
    bridge-stp off
    bridge-fd 0
    bridge-vlan-aware yes
    bridge-vids 2-4092

auto vmbr0.100
iface vmbr0.100 inet static
    address 192.168.121.121/24
    gateway 192.168.121.1

Proxmox host
/etc/hosts

127.0.0.1 localhost.localdomain localhost
192.168.121.121 proxmox.domain.com proxmox

Thank you with regards Forse

---

In my defense, I studied:
12 forum articles
8 blog articles
5 watch youtube videos
1 proxmox networking documentation
Nothing helped. I'm desperate
So I'm going to try one of my threads on the forum.

 

[shanreich]

From where are you connecting to the management IP? Is the VLAN properly configured there?

 

[hvdort]

I had the same experience. But after updating the linux network drivers of my network card (Mellanox) everything works fine without any change in the network config.
@proxmox: is it possible to update the Mellanox drivers to a more recent version in the installer-iso?
The content of my (working) network configuration:
auto lo
iface lo inet loopback

auto enp5s0f0np0
iface enp5s0f0np0 inet manual

auto enp5s0f1np1
iface enp5s0f1np1 inet manual

auto bond0
iface bond0 inet manual
bond-slaves enp5s0f0np0 enp5s0f1np1
bond-miimon 100
bond-mode 802.3ad
bond-xmit-hash-policy layer2+3

auto Nfcs_nat_net
iface Nfcs_nat_net inet static
address 172.1.28.8/24
gateway 172.1.28.1
bridge-ports bond0.345
bridge-stp off
bridge-fd 0

source /etc/network/interfaces.d/*