OpenWrt Virtual VLAN Configuration
Virtual Environment vs Physical Differences
- On physical OpenWrt routers, VLANs use DSA or swconfig for port-based tagging. In a Proxmox VM, OpenWrt has no physical switch — only virtual NICs (
eth0,eth1, etc.) backed by Proxmox bridges.
Virtual VLAN Pattern
VLANs in virtual environment use 802.1Q VLAN devices on bridge ports:
eth1 (LAN bridge port) ├── eth1.10 (IoT VLAN) ├── eth1.20 (Guest VLAN) └── eth1.30 (Management VLAN)Proxmox bridges pass tagged frames by default. No
bridge-vlan-awareor trunk configuration is needed on Proxmox side — VLAN tagging happens entirely within OpenWrt.
Virtual vs Physical Constraints
- NEVER use DSA or swconfig configurations for virtual OpenWrt deployments.