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bobcat4466
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Tuesday, July 25th, 2023 9:31 PM

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My Asus RT-ax86U router keeps dropping internet on wired and wireless

My Asus RT-AX86U router keeps dropping internet on wired and wireless. Internet out of Arris CM820 modem is not dropping,  if I test by moving wired PC to modem output port. Rebooting Asus router brings internet back. No error lights on Asus front panel. Asus support replaced 2x and still happens. I own both devices.

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2 years ago

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flatlander3

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1.5K Messages

2 years ago

Either one could still be having issues.  Either intermittent signal or errors/signal problems on the modem, or networking on the ASUS perhaps.

For the modem if you want to take a look at it yourself, start here:  https://forums.xfinity.com/conversations/your-home-network/internet-troubleshooting-tips/602dae4ac5375f08cde52ea0  Bad signal in, power levels out of spec upstream/downstream/snr uncorrectable errors?  All not helpful.  Splitters, cabling, connectors?  All important.  Error logs can help too if it's got one to look at.  

IPV6 sometime doesn't work spectacularly well in my market with rebind/renew requests.  Page 83 on Asus:  https://dlcdnets.asus.com/pub/ASUS/wireless/RT-AC86U/E15867_RT-AC86U_UM_v4_WEB.pdf?model=RT-AC86U 

Might not even be enabled by default on ASUS.  You can see if it is too by going to someplace like test-ipv6.com and see if you are even passing out internal IPV6 to connected clients, but I'd check it out and you really ought to know what it's doing if you are trying to debug it.  Disabling for a test might tell you something.

Poke around in there a bit too at settings.  Maybe something set weird if it doesn't appear to be modem/signal related (that's usually the issue though).  Look at support on ASUS for perhaps a firmware, or other user issues too.  

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bobcat4466

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@flatlander3​ 

In earlier posts I saw the ip address to read logs of my modem. I saw my power level was -10. A lot of errors in both corrected and uncorrected columns. Although this morning when internet went out from the router I moved the PC cable to modem output and had web there. Then rebooted router and had web back thru it in 45 seconds.

When it is cool in the morning tomorrow, I will pop into attic portal and remove the one splitter I think is up there.

2 years ago

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XfinityVictor

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1.2K Messages

Hello, I am happy to be of assistance. Can you please send us a DM. You can start by clicking the chat icon located in the top right corner of your forums' page when signed in. Once there, you can direct your messages to "Xfinity Support." Please add your full name and service address to help us locate your account. Let me know if you have any questions. 

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2 years ago

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Jlavaseur

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948 Messages

2 years ago

I have same router paired with the mb8611, exceptional performance and uptime, I do use https://www.asuswrt-merlin.net firmware, it’s very stable, if your savvy you can download the source code and compile your own firmware 

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bobcat4466

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@Jlavaseur​ I went into the attic this morning and swapped a 3 way splitter with a barren adapter. Signal now about -4 to -5. I think as the sun heated my attic the splitter caused issues. Always happen about 9 to 10 am. The cable wiring I installed 35 years ago and there are a few junctions in the path. No dropout all day today. Problem solved. Being able to see change in signal level was a great help. My Arris CM820 page is https://192.168.100.1. I am a retired engineering tech and data always helps solve issues.

2 years ago

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XfinityRaul

Official Employee

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1.8K Messages

That's awesome, @bobcat4466 . I'm glad to hear you're experiencing a better internet signal today after swapping out that 3 way splitter in your attic. Please let me know if there's anything else I can help you with.

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

2 years ago

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