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Forum Discussion

MChang1's avatar
MChang1
Aspirant
Feb 05, 2026

Poor cable connection error message

I have Xfinity internet service.  I have the Netgear CAX80 router/modem that I own.  This was recommended by Xfinity.   I read in the forums that the incoming speed is to fast for the router/modem?...
cax80
MChang1's avatar
MChang1
Aspirant
Feb 05, 2026
Firmware VersionV5.1.1.8
 
Cable Firmware VersionV1.02.08

 

ISP speed test shows @ 900 Mbps.

 

No splitters.  Coax was install by xfinity.

 

I rebooted the modem yesterday when the problem started.

 

Thanks brian

FURRYe38's avatar
FURRYe38
Guru - Experienced User
Feb 05, 2026

So is 1Gb the download speed that you pay for from XF? If so, then 900Mpbs would be what to expect from the CAX80 with a ethernet connection. 

I have same CAX80 however with Sparklight on a 1Gb/50Mbps service. Constant speeds seen at 900Mpbs or just over. 

 

What problem are you seeing after there reboot yesterday? 

Where are you seeing this problem? 

If the power levels are over what is seen here: 

https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router

Then you can install a cable coax line attenuator behind the CAX80. -3 or -6dbm maybe needed. Check your cable connections web page under the Power column first.