i just received this router and immediately replaced my AC86U. Performance wise very significant. However i missed a lot of deep customization offered in asuswrt.

1. Unable to set DNS server in DHCP. I have pi-hole ad blocker and used to point my LAN DNS to here.
2. Limited DDNS support. I remembered in stock openwrt they support a lot of ddns provider. No time to tinker around right now.
3. No support for guest network creation. I need to reconfigure all my iot devices (smart plugs, ip cam)
4. SSH access removed once i performed firmware upgrade. So can't tinker around for adding iptv support, adding additional ddns provider etc.

slowly resolving above issue before i can permanently shut my ac86u.

Back to this thread objective, the solution for getting the ssh and vlan tagging for unifi really works well!

thanks bro!

anyway, the moment im replying this post, im already back on my old router. for some reason after i rebooted this ax1800 router all my internet connection lost. i recalled that i have changed the WAN DNS (to point to my pi-hole) and hoping that all my client DNS request will be forwarded to pi-hole. also i noticed when i did that, the MTU changed to 1480 by itself. so after i reverted all those settings but my internet still disconnected i gave up. will explore more at night as im currently WFH now

having SSH directly to the router will ease the troubleshooting

This post has been edited by neuromancerx: Sep 8 2020, 04:42 PM

thats the plan, but then i lost my ssh access when upgraded the fw. anyway just playing for fun. honestly, i do not see any harm pointing the WAN DNS to pihole, since my pi-hole is using 1.1.1.1/8.8.8.8 as an upstream dns resolver. so as long as the internet is reachable, it should resolves.

my pc cant even ping 1.1.1.1, so i believed issue is not related to dns, unless there is something that im not aware with xiaomi's openwrt implementation

This post has been edited by neuromancerx: Sep 8 2020, 05:18 PM

1. Technically will achieve the same thing, but in a weird way.

Client DNS resolution when:

Set DNS at DHCP
Client-LAN DNS server

Set DNS at PPPOE side
Client-Router-LAN DNS server

But when i alter DNS setting under pppoe, something broken and im losing my inet access

2. My personal preference for DDNS will be dns-o-matic. It able to update to other multiple ddns service and act as a central hub - since i also have ddns service with he.net and afraid dns. just noticed that i have no-ip account as well, but IINM need to visit their website every month to keep account remain active.
3. Is that miwifi app downloaded from playstore or modded apk? i dont recall i see that option yesterday

This post has been edited by neuromancerx: Sep 9 2020, 11:09 PM

sorry, off topic:

im thinking to sell my AX1800 router. im barely using it, just for testing and experience. i dont think im ready to use the stock firmware yet at this point, will wait until it officially supported by openwrt.

other than AX1800, i'm also planning to sell these routers as well:
WS880 flashed with asuswrt RM100
AC86U CN set, consider no warranty. it got issue with disappearing 2.4Ghz but managed to get the workaround by set the country to AU RM250

Too much routers to play :sigh:
PM me if interested

correct me if im wrong, the moment we upgrade the firmware, the ssh will be disabled and the exploit is no longer there, right?

i ended up using this as wireless extender mode. but a bit uncomfortable due to the miwifi app is cloud based, and the router keep sending a beacon to the internet.

This post has been edited by neuromancerx: Nov 3 2020, 04:27 PM

i did this exactly, i dont think there was a significant difference for the existing wifi 5 client. speed more or less is similar with asus ac86u, which can cover my whole double storey house

of course. theoretically, you will need below vlan setup



this is openwrt setup for unifi vlan, you may get the similar result as Mi AX1800 is derived from the same code.

WAN port: tagged with vlan 500 (data) & 600 (iptv)
LAN4 untagged for vlan600, this is where you connect the STB

as mentioned in previous post, it will be much easier to get external switch that support vlan. Refer here: https://www.blacktubi.com/guide/make-any-ro...-work-on-unifi/

This post has been edited by neuromancerx: Nov 25 2020, 09:41 AM

can you try changing the MTU to 1492?

DNS will not have any impact to your connection.

This post has been edited by neuromancerx: Nov 30 2020, 10:06 PM

-sold-

This post has been edited by neuromancerx: Dec 22 2020, 12:32 AM

I'm using AX56U as mesh router and AC86U as mesh node. Mesh backhaul is using 5Ghz band. I haven't performed deep measurement test yet, but from a client connected to mesh node i can achieve 100mbps (on unifi 100Mbps). So, yes it served my environment well.

because 2.4 provide much wider coverage than 5ghz. when he going further from the AP the client will switch to 2.4. personally i use 2 different ssid, due to IOT devices only running in 2.4ghz

This is the ipv6 setting with original openwrt firmware, older version but the concept should be the same

https://advanxer.com/blog/2015/11/setting-u...r-for-tm-unifi/

just released, and probably will sold at 650-700.

Older device that run on lower data rate can contribute to this, as all the clients will be forced to use the lowest data rate. Normally, cheap IOT device is the culprit.

I solved my 5ghz coverage issue by putting a wifi mesh.