I hope someone who is more knowledgeable of VLANs than me could help me here… I've already asked this in 3 different forums, including the official Asus forum and Asus support itself, but got no answers at all. I'd like to know if Tomato USB fw would help me solve this problem (if it's a problem in the official firmware and not an hardware fault, in which case I'd need to RMA, but time is running short).
My ISP delivers only Internet + VoIP, no IPTV. Also, it's not any of the ISPs that already come in the ISP Profile list in the IPTV settings (MioTV, Singtel etc).
I successfully managed to connect to the Internet via the correct VLAN IDs my ISP provided (10 for Internet).
The problem with what I tested so far though, is that only LAN1, LAN2 and Wireless still work as normal (through which clients become automatically associated to the router) when using VLAN.
LAN3 and LAN4 become essentially dead. Can't even access router page through them. As soon as I stop using VLAN I can use LAN3 and LAN4 as normal again…
Since I won't be using LAN4 for IPTV, as my ISP is only Internet + VoIP, how could I have LAN4 work the same way as LAN1-2 + Wireless, while having Internet VLAN ID 10 and LAN3 VLAN ID 12?
I've tried leaving it blank, setting VID 2 (which I was told was the default VLAN ID for LAN1-2 + Wireless) to see if that would help, but it didn't… No idea if PRIO would help here, so left it at 0.
Does this mean the LAN4 port becomes useless since my ISP is just VoIP?
Could a custom firmware like Tomato USB solve this or am I missing a step in the official firmware config? Maybe I'm forced to use a gateway?
Is this normal behaviour or is the router defective?