WRT1900ACS v2 - Need help converting old config from swconfig to DSA 21.02.1

[Armin_Kh]

Hi everyone, I decided to upgrade my wrt1900acs v2 to 21.02.1 stable from 19.07.8 and I ran into some problems with vlans in new build. I was following this tutorial which works fine on 19.07.8 and noticed switch tab is missing from luci in 21.02.1. I did some research to config it by my self either through luci or cli but I got more lost since I'm novice in networking and Linux field. so i had to revert back to 19.07.8.
I was wondering if someone can help me apply my previous config to the new build using luci or cli.
here's my old config:

config switch
	option name 'switch0'
	option reset '1'
	option enable_vlan '1'

config switch_vlan
	option device 'switch0'
	option vlan '1'
	option vid '21'
	option ports '5t 2 1 0'

config switch_vlan
	option device 'switch0'
	option vlan '2'
	option ports '6t 4'
	option vid '11'

config switch_vlan
	option device 'switch0'
	option vlan '3'
	option ports '5t 3'
	option vid '41'

[grrr2]

Hi,

have you tried Mini tutorial for DSA network config ?

[Armin_Kh]

Hey, thanks for replying
Yes I've read that one too but it's too complicated for me to understand it.
in my old config i turned off LAN 1 from lan interface and untagged it in new vlan 41 that i created.
In DSA version i'm not sure how can I achieve same result correctly. like do i have to remove it from bridged ports in br-lan like below and untag it from new VLAN that I created?

config device
	option name 'br-lan'
	option type 'bridge'
	list ports 'lan1'
	list ports 'lan2'
	list ports 'lan3'

also how can I tag vlan to cpu in dsa? is it automatic?

[LGA1150]

In your previous config, LAN1 and WAN are standalone and untagged, so you don't need to configure VLANs.
Just move LAN1 out of the bridge and set it up like a standalone interface (WAN is already standalone by default).

[Armin_Kh]

thank you so much this fixed my problem.
i just made a simple thing complicated by overthinking. lol