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MOCCOR's avatar
MOCCOR
Aspirant
May 26, 2023
Solved

Curious about signals of Netgear CM500

I did a bunch of searching around, so I am pretty sure I need to check the splitter and outside cable. But I just want to double check since suddenly my internet went from about 500Mbps down, to abou...
  • FURRYe38's avatar
    May 26, 2023

    Power levels are a bit too low:

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

     

    You have some Correctables and UN-Correctables that should be mostly zeros.

    Any Criticals, Errors or Warnings seen in the Event logs, needs to be reviewed by the ISP and resolved.

     

    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#M12853