Network issue using VLAN , LACP and vmbr


New Member
Aug 16, 2023
i am facing a problem implemeting my network, with aggregation and so... Its been several days that i try things on PVE and on Switch, but i keep not having the right solution :rolleyes:. Maybe someone here can have a solution!!

The problem : PVE node (accessible via is well accessible, LACP seems to work and Server1 (and VLAN10) is correctly working - i can ping PVE Node and have access to internet...
BUT, for what concern VLAN20 and VLAN30, i can respectively ping their .1 IP, but no internet access at all !

I was thinking of a switch configuration issue, but apparently the switch conf seems OK ;
The LAG is aggr. ports 2 and 6 of the SW, both ports have PVID 1 (or whatever!!) but are configured "TAG Only" and as "trunk ports" (the LAG1, group of port 2-6 is configured the same)...
And for each VLAN :
- VLAN ID 10 => Port 2 and 6 (and LAG1) : TAGGED
- VLAN ID 20 => Port 2 and 6 (and LAG1) : TAGGED
- VLAN ID 30 => Port 2 and 6 (and LAG1) : TAGGED

Is this configuration correct ?

Here is the topology that i would like :


Here is my /etc/network/interfaces :
auto lo
iface lo inet loopback

auto eno1
iface eno1 inet manual

auto enx00e04c680014
iface enx00e04c680014 inet manual

auto bond0
iface bond0 inet manual
        bond-slaves eno1 enx00e04c680014
        bond-miimon 100
        bond-mode 802.3ad
        bond-xmit-hash-policy layer2

auto bond0.10
iface bond0.10 inet manual

auto bond0.20
iface bond0.20 inet manual

auto bond0.30
iface bond0.30 inet manual

auto vmbr0
iface vmbr0 inet static
        bridge-ports bond0.10
        bridge-stp off
        bridge-fd 0

auto vmbr20
iface vmbr20 inet manual
        bridge-ports bond0.20
        bridge-stp off
        bridge-fd 0

auto vmbr30
iface vmbr30 inet manual
        bridge-ports bond0.30
        bridge-stp off
        bridge-fd 0

I hope all these information can help... If not enough do not hesitate to ask me more.
I would really appreciate a little help on this
Many thanks
Last edited:
When the VMs can ping your router but do not have Internet access then the issue is a missing default route in the VM or a missing firewall route / NAT rule in the router.
No i cannot ping the router... Just ping the .1 address (and even, VLAN10 can ping (cause it seems to be default route for PVE) but both other VLANs cannot even ping their .1 address)


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