What firmware are you running? I thought I might revert to stock firmware and see if the bug persists.
I can’t find anything in the WiFi 6 standards that would explain the behavior so do we have a bug reporting process for Merlin or stock ASUS?
Thanks for the testing! It would be great to narrow down whether the bug is in asus' stock firmware.Will flash back then and try to remember to report back
I have an Asus RT-AX86U Pro running 3004.388.4. I've configured 2 SSIDs a 5ghz one with SSID names formatted like this: WIFI_5G and WIFI.
Have you found a solution? I have the same problem. I cannot ping devices on 2.4Ghz from laptop connected to 5Ghz SSID. I've seen this on the stock Asus firmware, as well as Merlin firmware. I'm currently on merlin 3004.388.5 RT-AX86U ProWhy would that be the case when the underlying IP network is the same? There's no east/west segmentation so I wouldn't expect access over a different radio frequency to matter.
At any rate, the config finally failed again and I've uploaded the config to ASUS for analysis.
Well, yeah. But on the back end, whether AP, node, or router, if they all arrive on the same network segment it /should/ be a non-issue. IP addresses are what it's all about, in the end. I've had no trouble whatsoever to this point communicating with clients on differing SSIDs / bands within the same network.Let's go back to basics - SSID's define a WLAN, so two different SSID's (1 for 2.4, the other for 5) says to the client, these are two different and distinct networks.
Use a common SSID, and see if things change...
No issues with 2.4Ghz and 5Ghz main LAN WiFi clients pinging each other on a RT-AX86U Pro running 3004.388.5. Both WiFi clients are getting an IP address from the main LAN IP address pool. I am not using Smart Connect, each main WiFi SSID has it's own name.Have you found a solution? I have the same problem. I cannot ping devices on 2.4Ghz from laptop connected to 5Ghz SSID. I've seen this on the stock Asus firmware, as well as Merlin firmware. I'm currently on merlin 3004.388.5 RT-AX86U Pro
What is AP Isolated feature?
When this feature is enabled, wireless clients or devices will not be able to communicate with each other. You may want to utilize this feature if you have many guests frequently using your wireless network.
I have the opposite situation inasmuch as I can't print to my Canon Pixma TS8350a printer (which is on the 5 GHz network) from any devices that happen to be on the 2.4 GHz network. It's not a problem for me though, because all the devices that need to be able to print are connected to the 5 GHz band, but it does confirm that there is a problem with communication between the networks.I also have a similar problem, using Merlin 3004.388.5 firmware on a recently acquired RT-AX86U Pro.
I upgraded from an RT-AX86U to an RT-AX86U Pro several weeks ago.
The issue was evident when I was unable to print to the 2.4Ghz networked printer from my laptop, I noticed that I cannot ping any of my 2.4GHz devices from my 5GHz connected laptop. I could only ping devices that were connected to the 5GHz SSID. The router can see all devices.
Solution for me is on my laptop; change to the 2.4GHz SSID and then back to the 5GHz SSID and I can then see all the 2.4GHz devices.
I was not seeing this issue at all on the RT-AX86U. I've had a look at the system logs and cannot see anything of interest. The router settings were reset to factory defaults after upgrading to Merlin.
I thought maybe the Group Key Rotation Interval was the culprit, but I'm still seeing this issue when this is set to 0 (Off) or 3600.
I don't have another laptop/PC to test. but from my iPhone, which is connected to the 5GHz SSID, I have no issues accessing the printer, but this 5GHz WiFi connection is regularly reset when the iPhone goes to sleep.
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