I'm running OpenWRT 19.07.03 on an Archer C2600 and I have the following setup:
Router with OpenWRT generating two wireless SSIDs (one lan and one guest)
An unmanaged switch plugged into LAN 2 on the router that powers and serves an outdoor AP
What I'd like to do is essentially have the outdoor AP "extend" the two SSIDs from the main router so that outdoors has a similar set up as indoors (lan and guest SSIDs)
I've tried a few different ways, playing around with the switch settings in OpenWRT to tag the port on the router, bridging the existing guest interface with the port that the AP is plugged into, etc. but it doesn't seem to work.
Do I create a new interface for the VLAN or do I simply turn the existing guest interface (currently linked to the guest SSID only) into a bridge and combine eth1.3 and the SSID?
Note that mixing untagged and tagged VLANs on a port (LAN2) is not guaranteed to work.
I suggest to set VLAN1 tagged for both the router's LAN2 port and the AP.
Even after setting those elements, I was still unable to connect to the guest VLAN. I found out that it was due to a firewall issue so I configured the firewall for the Guest network to look like the following and it started working: