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Nighthawk CM2050V Comcast Firmware Killed Speed
I understand Comcast has just updated the firmware in these routers from V2.01.03 to V9.01.01. My download speed went from 934 to 225. Comcast tech came out yesterday and cleared some signal loss b...
I contacted a supervisor who actually responded he could see the modem was not properly provisioned, he opened another ticket and one of their best techs came out. I think they fixed it from inside but he was excellent. Problem solved after a month and about 15 tickets opened. Thanks for the encouragement
I am measuring the speed on the back of the modem with my laptop.
db3058 wrote:I am measuring the speed on the back of the modem with my laptop.
With what application? Did you check your Network Profile? Is it Public or Private?
db3058 wrote:https://speedtest.xfinity.com/
That is a web address that uses a web browser in the data path.
Search for Ookla in the play store. It is a stand alone installable application that does not use a web browser for the testing.
I opened up a ticket with Comcast cable maintenance, as the issue is escalated. At this point I've changed everything except the modem. I could always install my 9 yr old Arris modem...it was clocking over 400 and that would tell me a lot but it's a serious hassle installing any new modem because there are very few people at Comcast who can do anything correctly. I took many calls and many hours to get this modem installed. Most of them are complete idiots and bs you with no regard for your time and energy. If I wasn't retired I would need someone else unemployed to install anything. It's the plant or the modem...can't be anything else.
Not changed...private
Power levels are with in spec however power levels across all channels is all over the place. All channels should be with in 3db on each channel. ISP needs to get the channel power with in spec of each other.
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.
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
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/
