Traffic between vlan trunk and vlan distributed port groups not flowing

[FrancisAugusto]

Hi,

I have a distributed port group set up as a vlan trunk, and connect it to a firewall. The vlan range is 200-300.

I created another dpg for the vlan 201.

However, vm's connected to these port groups cannot ping each other. I configured a vm with a vlan-interface and connected it to the vlan trunk dpg, but it still can't communicate with the vm's on the vlan 201 dpg.

Anything I'm missing here? I know that having dog's with the same vlan works, but does it work as well with a trunk dpg?

[scott28tt]

Moderator: Thread moved to the vSphere area.

[ZibiM]

If you create portgroup with trunk, then you need to use VGT - virtual guest tagging.

Did you tagged vm interface connected to the trunk pg in the VM's OS ?

[FrancisAugusto]

yes. I created a vlan Interface on ubuntu 20.04. I assume that it tags traffic on the vlan interface.

[FrancisAugusto · Accepted solution]

I fixed it. The thing is that the vlan I created was not provisioned on the physical switch, so it wasn't on the uplink trunks - I guess that's what prevented it to work.