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Akiirahh's avatar
Akiirahh
Guide
Feb 08, 2023
Solved

XR1000+CM2000 Latency issues/Rubberbanding several times a day. Everyday.

Models: AX5400 WiFi Gaming Router (XR1000)  v. 1.0.0.64_1.0.49 & DOCSIS 3.1 Cable Modem (CM2000)    I have been suffering from a weird issue with latency which has shown sporadic packet loss of 100...
  • FURRYe38's avatar
    FURRYe38
    Feb 10, 2023

    Ok so couple of items on the CM2000 modem that you need to get the ISP to correct:

    1. Power levels are WAY TOO LOW and all over the place:

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

     

    2. The ISP needs to review the Event log and resolve any Critical, Errors seen here. 

     

    3. The modems Correctables and Un_Correctables should be all zero on all channels. There is a boat load. 

    Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended. 

    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. Should help with the correct and un-correctables. 
    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#M12853
    https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html

Akiirahh's avatar
Akiirahh
Guide
Feb 16, 2023

FURRYe38 Netduma-Fraser Netduma-Liam 

 

Yesterday night was the due date for the service, and impressively that same morning a team of like 12 CoxCable vans showed up to the area, and fixed it up to perfection. I haven't had a single disconnect ever since. Tech sent me a message saying they fixed the feeder cable for the whole condominium and replaced a lot of the hardware for the area.

 

 

I have changed the SSID name and Password but the device doesn't disappear, but that's for another post, so I think that's it!

 

Thank you all for your help!

 

Edit for info:

I did check the cable connection and logs in the CM2000, the critical errors are gone, but the correctables and un_correctables remain. That said, my connection is running smoothly at the moment.

The connection benchmarks show no packet loss anymore, and a pathping to servers showed me a difference in packet loss from 25% to 2%. So I think we're doing MUCH better.