I'm planning on extending my home network by installing another AP so that I can extend my guest LAN and private LAN.
Due to cabling restrictions I've discovered that VLAN's would be the best approach.
I want to know if it's possible to trunk a WAN and two LAN's down one physical cable (the WAN port on the rear of my router) on OpenWrt to a managed switch. From here I can then split the WAN to the modem and the two LAN's onto another OpenWrt router where I will further split the private LAN and guest LAN.
To explain this better, my Linksys WRT1900ACS will be the main router and AP. So far the internet comes in on the WAN port and the four gigabit Ethernet ports are configured to the private LAN. On OpenWrt I have three interfaces, one for private LAN another for guest LAN and finally one for the WAN.
I'm still trying to get my head around configuring VLAN's but I do understand the basic concept. What I think I'm trying to do is trunk WAN, private LAN and guest LAN, but I can't work out what needs tagging, untagging and then what to set the interfaces to.
All I know is on the trunked VLAN (combined WAN and two LAN's), once it arrives at the managed switch on the one physical port, VLAN's are used to split the trunk into their respective three separate connections.
Could someone tell me this is all possible, and if so could some kindly explain how I would do this in LuCI (the graphic VLAN will easy to understand if it's visual) please?