Hello, for the longest time I've been having trouble with my NightHawk CAX80. Purchased end of 2022, since then I've had trouble with uploads. Downloads are fine, but uploads fail 90% of the time, particularly for the Slack and Shotgrid programs I use at work. None of my coworkers have the same issue (remote working) so it must be my router. I'm connected to ethernet, so the issue shouldn't be WIFI connectivity. I've downloaded the latest firmware, I've searched forums, people seem to have similar issues but no solutions. Also had our company's IT look at my computer and make sure there were no firewalls blocking things. This is unacceptable for a $400 router that (other than speed) performs worse than my 8 year old nighthawk router. Router/modem: Nighthawk CAX80Current Firmware: Version V2.1.5.2 There's a similar WIFI issue that I also have that I think may be related, but really would expect things to be better over ethernet: https://community.netgear.com/t5/Cable-Modems-Gateways/CAX80-can-t-upload-5GHZ/td-p/2158905 Thanks, any help greatly appreciated.

Power levels are with in specs. Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem. I see lots of correctables and un-correctables that need to be zero: Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.Be sure there are no coax cable line splitters in the between the modem and ISP service box. Be sure your using good quality RG6 coax cable up to the modem. Start with removing any amplifiers, signal attenuators, or splitters from the coax.From there check the line for kinks, damage, moisture in the line.Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.Be sure to power OFF the modem for 1 minute then back ON.https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-routerhttps://www.duckware.com/tech/solving-intermittent-cable-modem-issues.htmlhttps://highspeed.tips/docsis-events/

When there are a ton of numbers seen and accross all channels ya, not good. Usually a bad cable or connection or possible cable splitter causing these values to go up. Should be mostly zeros or very low value numbers seen here.

jrayner wrote:Thanks so much FURRYe38 , I will try these out as soon as I can get Comcast out here.I'm using the CAX80 as my modem and my router, btw, in case that changes anything.So these correctables and uncorrectables are all bad to see right? Should I expect to see none of those in the diagnostic report, in a properly functioning modem/coax cable setup?Keep in mind, the values for the correctables and uncorrectables are cumulative over time since the last reboot. When you reboot, they reset to zero. Seeing values in excess of say 1000 over a few days is different than seeing the same number over several weeks or months.

Does the multi gig port work again after you rebooted the modem? What is the ethernet device connected when it was on the MG port? The MG port should work as well..depends though some.

Please post a copy and paste of the modems connection status and event log page.https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-routerhttps://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router What ISP speeds UP and Down do you pay for from the ISP? Who is the ISP the CAX80 is connected too?

Nighthawk CAX80 - Can't upload to Slack or Shotgrid

20 Replies

FURRYe38
Guru - Experienced User
Sep 13, 2023
Please post a copy and paste of the modems connection status and event log page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router

What ISP speeds UP and Down do you pay for from the ISP?

Who is the ISP the CAX80 is connected too?
- jrayner
  Aspirant
  Sep 13, 2023
  Thanks for your reply -
  
  ISP: Comcast/Xfinity
  Download: 1000mbps
  Upload: 45mbps
  
  Cable Diagnostic
  Status: Good
  Action: Your setup looks fine. If you are still experience an internet issue, the Netgear Cable Knowledge Base can provide additional troubleshooting info.
  Internet Access: Good
  Downstream Status: Good
  Downstream Power Level: Good
  Downstream SNR: Good
  Upstream Status: Good
  Upstream Power Level: Good
  - jrayner
    Aspirant
    Sep 13, 2023
Kitsap
Master
Sep 13, 2023
A couple of additional questions.

Do you have your CAX80 configured to use the domain name servers (DNS) from your ISP?

Does your ISP support IPv6 and do you have IPv6 enabled in your CAX80 configuration?
- jrayner
  Aspirant
  Sep 13, 2023
  Thanks Kitsap - I honestly don't know how to check those things but I will research it. I've never had to do that before

Forum Discussion

Nighthawk CAX80 - Can't upload to Slack or Shotgrid