Assign ports to passthrough WAN

RouterOS Beginner Basics
1

Hello, recently got a hEX RB750Gr3 to expand my home network. I’ve tried setting up different ports to LAN or WAN with various forum post but almost always got incorrect behavior or not being able to connect back to the router.

I’m trying to do this because I have a connection from my ISP that both serves internet access and TV. For TVs to receive data they need to receive an IP address from the ISP hardware (Not through LAN). (I tried playing around with IGMP, but that clearly did no work :D) All other traffic would go through the router as LAN.
(Previously I only had a switch in the same place, and all routing was done by a router/AP combo connected to the switch. Now I have more devices to connect and the simplest way to connect and manage them (without running new ethernet runs) was to switch out the switch for a router)

What I would ideally want:
Ports 2 and 3 - LAN ports, managed by the router (DHCP and all).
Ports 4 and 5 (TVs) - connect to ISP WAN hardware directly/invisibly. Devices on these ports do not interact with LAN devices, do not receive an IP address from the router, all traffic only gets switched.
(Port 1 is connection to WAN/ISP/internet connection)

I’m new to to this, but already played around enough to use WinBox semi confidently.
Would be grateful for directions on how to achieve this. Would be starting from a default configuration (again) on v7.15.3

2

Easiest might be to create a second bridge and bundle all WAN ports to it (that would be ether1, 4 and 5 in your case).
Move DHCP client from ether1 to the new bridge.

3

Do you know if the internet or tv traffic is coming over vlan tagged???

4

This is close to what I want, TV boxes (probably should have clarified that earlier) work as expected. But I do not get an internet connection on ether2 and 3.
I’ve tried playing around with DHCP Client options, it seems that the TV boxes do not need one set (I assume they negotiate IP addresses with ISP hardware upstream). Giving a DHCP Client to this new bridge does not change TV box behavior.
Leaving the DHCP client on the default bridge (has assigned ether2 and 3), or giving them both, does not give internet access to connected devices. Status(?) does not change from searching. Not giving one also doesn’t work.
(Edit to add: DHCP server is on default bridge, and devices do get local IPs, only traffic does not get through to wider internet)


No, I would not know that. :frowning:


Edit Edit: Not a DNS problem. (checked by trying to go to 1.1.1.1)

5

Move bridge to WAN interface list.