[SOLVED] VLAN on Linux Bridge does not want to work properly

[j.schneider]

Hello all,

I would like to start by saying how great I think Proxmox is and how much I enjoy working with it. However, I'm now facing a problem and absolutely don't know what to do.

Short info about the scenario:
It's about a mini server, it has a physical Ethernet interface called "eno1". This is connected to a Unifi switch and a trunk port. This has native VLAN 1 and outputs tagged VLANS 2 and 3. Now I want the existing Linux bridges to access the individual VLANs:

vmbr2 should be in VLAN 2
vmbr3 should be in VLAN 3

The vmbr0 has the port eno1 assigned.

Whatever I do now, it does not work. I have assigned eno1.2 and eno1.3 as port for vmbr2 and vmbr3 and switched vmbr0 to VLAN-Aware. No chance. Even if a VM sets the vmbr0 with VLAN tag 2 or 3 it does not work.

The VLANs are definitely there and the Unifi switches are configured correctly. Now I've been experimenting and googling myself silly for 8 hours.

I would be extremely grateful for any enlightenment!

 

[vesalius]

have You tried the more straightforward method of using your vlan aware vmbr0 for your VM/LXC guest then assigning either vlan 2 or 3 at the vm-hardware- network device or LXC-network levels in the Proxmox webgui?

 

[j.schneider]

Unfortunately, that didn't help either. I also tried another external USB to LAN interface to rule out driver problems, but that didn't work either.

 

[striker54]

if vmbr0 is vlan aware, you assign the vlans in that interface. There is no need of creating more interfaces.

Example:
vmbr0.10
vmbr0.20

Here a quick print of mine:

 

[j.schneider]

This is exactly what I have done and it still doesn't work. See screenshot.

 

[striker54]

Proxmox config is ok, so it must be a switch config problem.
In my Mikrotik switch the port connected to proxmox is configured as member of all vlan's and to receive all traffic (tagged and untagged).

 

[bobmc]

In what way does it 'not work' - are you using DHCP and it doesn't get a lease or are you using static IP addresses?

All that is normally required is to make vmbr0 vlan-aware and then put the relevant vlan tag on the VM config.

 

[j.schneider]

Thank you guys. I was worried that I had missed something in the proxmox config. I'll try to swap the switch for another model from another manufacturer.

I have a virtual client that gets a DHCP lease on the same bridge also in VLAN 3. Only the physical PC on another port of the switch (with native access VLAN 3) does not get an IP.

I test and report.

 

[j.schneider]

It turned out that it now works with the other switch. This thread can be closed. Thanks a lot