SPAM: Re: [PVE-User] how to set proxmox box to connect to trunk interface

Stefan M. Radman smr at kmi.com
Tue Dec 15 00:07:47 CET 2020


Hi Leandro

Find below a network configuration, assuming that PVE resides on the native/untagged VLAN like the other VMs you did not list.
As you did not mention the IP address of the PVE host I assumed 192.168.0.1/24.

You can either enter this in /etc/network/interfaces directly or configure it in the PVE GUI.
vmbr0 already exists, I guess, for the untagged Vlan. and is connected to en1 which used to be an untagged interface but now is a trunk, carrying the untagged traffic in addition to the tagged traffic from vlans 10 and 20.
You just need to a vmbridge for each of them, linking it to the vlan sub-interface of trunk en1.
1.Create: Linux Bridge
Name: vmbr10
Bridge ports: en1.10
Comment: access ports for VLAN 10
2.Create: Linux Bridge
Name: vmbr20
Bridge ports: en1.20
Comment: access ports for VLAN 10
That's where you hook up your VMs to.

Starting with PVE 6.1 you can apply changes without rebooting the host.
https://pve.proxmox.com/wiki/Network_Configuration#_apply_network_changes
The working VMs without VLAN tags should continue to work.

I would recommend though, to reboot the host after fundamental network changes like this.

Note that I could not test the proposed config but I am running a very similar one and it has been working for years (since 5.x).

Stefan

/etc/network/interfaces:

auto lo
iface lo inet loopback

iface eno1 inet manual
#VLAN TRUNK (VLANS 10 , 20)

auto vmbr0
iface vmbr0 inet static
address  192.168.0.1
netmask  255.255.255.0
gateway  192.168.0.254
bridge_ports eno1
bridge_stp off
bridge_fd 0
#PVE host and VMs on the untagged VLAN

auto vmbr10
iface vmbr10 inet manual
bridge_ports en1.10
bridge_stp off
bridge_fd 0
#access ports VLAN 10

auto vmbr10
iface vmbr10 inet manual
bridge_ports en1.20
bridge_stp off
bridge_fd 0
#access ports VLAN 20


> On Dec 14, 2020, at 14:15, Leandro Roggerone <leandro at tecnetmza.com.ar> wrote:
>
> Hi guys , please taek a look to attached text file, thas is what I need to
> achieve.
> looking at official docs , couldn't find any direct example.
> Do I need to proceed with cli or is it fully done at pve gui  ?
> Should I restart the server to make it work ?
> Other:
> I have some working VMs with no vlan taggs.
> Can I proceed with this change with no outage?
> Regards.
> Leandro.
> <vlan_diag.txt>_______________________________________________
> pve-user mailing list
> pve-user at lists.proxmox.com
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