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Intermittent loss of connectivity from AX1800 to modem

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Intermittent loss of connectivity from AX1800 to modem

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
Intermittent loss of connectivity from AX1800 to modem
Intermittent loss of connectivity from AX1800 to modem
2020-10-10 14:33:30 - last edited 2020-10-10 14:41:18
Model: Archer A20  
Hardware Version: V1
Firmware Version: 1.1.0 Build 20200326 rel.63914(5553)

I couldn't select the actual model in the dropdown box, but it's an Archer AX1800.

 

Since installing this brand new yesterday, I'm seeing it lose connectivity to the modem it's connected to (Netgear CM1000v2.)  The modem still shows a solid gigabit link to the router, but the router's WAN light goes solid amber and I'm unable to hit any resources outside of the network.  I can plug into the modem and do a release/renew and the internet is still fine, the modem shows no loss of connection.

 

I can release/renew from the AX1800 which will generally bring the connection back after ~5 minutes, otherwise powercycling both devices works as well.  The logs don't show anything except my powercycles.  I have swapped ethernet cables multiple times and even tested the patch cables I was using.  Firmware is up-to-date, unsure what else to try at this juncture.

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Re:Intermittent loss of connectivity from AX1800 to modem
2020-10-12 16:32:44

@Nurga 

 

You mentioned you just installed this router. Do you happen to have your previous router? If so, if you connect that and leave it for a couple of days or as long before the AX started losing connectivity does it still happen?

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Re:Intermittent loss of connectivity from AX1800 to modem
2020-10-19 16:50:01

@Nurga 
I have been seeing this same thing.  Modem from Spectrum stays up, led on Router says it can't connect to the internet/WAN. I've tried using the spectrum modem and haven't seen this same type of disconnect/lost packets.  I do not like the Spectrum router for wifi, so i bought this AX1800 locally and have had trouble since I purchased it.  I am V1.2. It is random,  I have had the internet company come out a few times to make sure there was not some issue after the router that might be causing the issue, assuming the cable modem was more fault tolerant in it's indication of WAN status.  I've observed packet loss to the ax1800 router via cat5e hardwire and pingPlotter. These are generally short outages (.5 seconds usually and 1-2 seconds at most), however this makes video communication and anything requiring a stable server connection unreliable, at best.

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#3
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Re:Intermittent loss of connectivity from AX1800 to modem
2020-10-21 16:11:34

@uni 

 

It could possibly be related to the MTU settings?

 

From what I saw the recommended MTU size is 1472. Our routers have 1500 set by default (Advanced > Internet > Advanced Settings)

 

Another thing you can possibly try if you have a cable modem is to look at the modem logs. Any record of critical 3 or 4 errors indicates there is an issue with your service signal which gives random dropped connections.

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