Hi, I'm trying to get my rb5009 set up and things don't seem to be working the way I would expect.

Context: I have a static IP from my ISP. They have provided the static IP as well as netmask and gateway information to me. That side of things is set up properly.

I get FTTH and I'm bypassing their modem and plugging straight into the ONT. This is just an internet line - there is no IPTV.

The ISP uses VLAN ID 3000.

What I've done/expect to happen: I've plugged in the data link from the ISP provided ONT into ether1. I have a desktop plugged into ether2. I created a VLAN interface on ether1 with VLAN ID 3000 (call it isp-vlan). I've created a new WAN interface in interface lists for isp-vlan.

In short:

/interface vlan add name=isp-vlan interface=ether1 vlan-id=3000
/interface list member add interface=isp-vlan list=WAN

I've ensured that the static IP and default gateway provided by the ISP are inputted correctly.

To my knowledge, this should give me access to internet. My understanding is that the ISP expects VLAN tagged packets with ID 3000. My creating the vlan interface on ether1, that interface should be encapsulating/decapsulating all packets that go out/come in with that ID.

This isn't the behaviour though. I get no internet access with this set up. Overall, I see no packets going through the vlan interface I created while there are many packets going through the ether1 interface. Examining the packets from the ether1 interface shows that none of them are tagged. To my understanding, I believe I should have recreated a similar set up that was functional with a different consumer router where I simply set the WAN port to VLAN ID 3000.

Is there something obvious/silly that I'm missing here? I recognize that I'm probably just an idiot but I'm getting slightly frustrated here haha.