Need help setting up a one port router with vlan

RouterOS General
1

Hi there

I’m in the process of setting up an intel nuc with only one network card as a router, yes I know it sound strange for some people but I know it’s possible. I recently had an hardware failure with my regular router and I havent any other device with 2 network cards. As some of you may know, intel has great difficulties to provide entry level cpu to the market so I can’t even replace the hardware I was planning (an x86 pc, zotac CI329). I came across this video explaining what I’m trying to achieve : https://www.youtube.com/watch?v=z59_MWWPL-Q

I’ll use opnsense as the router software, this part is easy. The tricky one is setting up the switch with vlan as I don’t have any expertise with my CRS125-24G-1S (router os 6.44)

I really need your help on this because I can’t replicate the from the video on my CRS, the guy use a cisco which have differents settings and options. routeros is definively to complicated for me, I can’t figure out how to do it.
Please help

2

I hate watching long videos about subjects that can be explained on few lines in written form. But it sounds like you just need a tagged vlan or two. Check the manual, jump directly to examples and I think they are relatively easy to understand. The first one looks like it could help you. Let’s say that ether6 could be your WAN, ether7 LAN and ether2 would be where you connect your router configured for two tagged interfaces.