Asus RT-AC86U Dual Wan and IPV6

[Disused Yeti]

Hi. My Router is an Asus RT-AC86U. I've been having problems with my network for a while now, I thought that I had my dual band split into 2.4GHZ and 5GHZ, but it seems that I have the same frequency on 2.4 split into Lan and Wifi. And my network map tells me that I have a cable unplugged but doesn't give me any more information than that, it seems that I have no idea how dual band works.

I'm not sure if the problem is connected, but I can't enable IPV6 either. This hasn't been a problem till over a month ago, when my ISP changed from a dynamic IP address to CGNAT. Most things work OK, but I have no connectivity between Plex on my PC and TV chromecast in a different room. I believe that IPV6 could solve that problem, I can't seem to be able to assign a permanent IP address.

I thin‌k I've uploaded screenshots of the necessary settings, please let me know if I need to give more information. I hope this all makes sense, as I say, I really have much less knowledge about this than I thought I had. Cheers, Matt

 

[Disused Yeti]

These are the rest of the screenshots.

 

[OzarkEdge]

Hi. My Router is an Asus RT-AC86U. I've been having problems with my network for a while now

What exactly is the problem? I did not review all of your settings.

Dual band means the router has two radios, one for 2.4GHz WLAN and one for 5.0GHz WLAN. Each WLAN has a name (SSID)... if you enable Smart Connect band steering, then they each have the same name and your client devices will list them as one WLAN but they are still two WLANs... Smart Connect is suppose to help steer/connect the clients to the best WLAN/band/connection.

I would leave IPv6 disabled until you really need it or want it.

Edit: I see you have assigned 192.168.1.1 to your router LAN and to your TV... this is a conflict. I would let DHCP automatically manage your IP address assignments for now.

OE

 

[ColinTaylor]

Your post makes very little sense.

I suggest you start by disabling IPv6 on the router to simplify matters and concentrate on a "normal" IPv4 setup. This should have no bearing on your local network which can still use IPv6 locally if it needs to. But I doubt that has anything to do with your Plex problem.

Your LAN - DHCP Server settings appear to be wrong. I'm not sure how you managed to get the router to accept them. Your router's IP address is 192.168.1.1. Yet you have said that your DHCP pool also starts at this address and to make matters worse you have assigned Living-Room-TV to this address.

Change the IP Pool Starting Address to 192.168.1.2 and change Living-Room-TV's address to something sensible, like 192.168.1.10. Reboot the router, then the TV for the TV to pick up that changes.

 

[Tech9]

Seems like this router has non-working 5GHz radio as well.

 

[OzarkEdge]

Seems like this router has non-working 5GHz radio as well.

It could be that the OP's problem(s) are:

o the notorious RT-AC86U router burning out prematurely... the 5.0 radio this time;

o the router firmware was not Hard Reset before configuration;

o the router firmware is not configured properly.

In that order.

First troubleshooting step: Hard Reset the firmware and check the router webUI to see if the 5.0 channel/radio appears/operates normally. If so, install current firmware, Hard Reset the firmware, and commission/configure the new network.

FW Reset FAQ

Reset button/webUI Restore/node removal clears settings in NVRAM; reboot restores fw defaults from CFE

Hard Reset via WPS button/webUI Restore+Initialize also clears data logged in /jffs partition

OE