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Forum Discussion
CM1000-1AZNAS xfinity / download speed issues
Hello all, I am posting here because I am at my wits end with this problem. I have a CM1000 (owned for several years) that has recently started acting up. I pay for the xfinity giga (1200Mbps) se...
The CM100 is a modem only and according to xfinity should be good up to 927 Mbps. Which I would be happier if I was reliably seeing either of these speeds.
All testing is done wired from modem to PC, while I do have a netgear nighthawk router it is only in use for the house hold use. I disconnect when chasing down issues.
Firmware version on my modem is V7.01.01
mcbullis08 wrote:The CM100 is a modem only and according to xfinity should be good up to 927 Mbps. Which I would be happier if I was reliably seeing either of these speeds.
All testing is done wired from modem to PC, while I do have a netgear nighthawk router it is only in use for the house hold use. I disconnect when chasing down issues.
Firmware version on my modem is V7.01.01
The tech's hardware indicated everything was fine at the modem. Maybe you should be looking at your main wired PC? Mac or Windows (version 10 or 11)?
If it is Windows, you get updates every two to four weeks from Microsoft that could adversely impact your network settings.
Network profile, Private or Public? IPv6 enabled on your router?
Windows 7 ultimate (64 bit) service pack 1&2.
Home network with IPv6 enabled but not being used.
do you have another device you can hardwire into the modem and test with?
I have also tested with my wife's Macbook OS High Sierra 10.13.6 that has almost identical results.
All of my testing (PC directly connnected, Macbook directly connected, PC modem to router) all produce speeds ranging in the 350-420 range. When 2 months ago was 850-920. Nothing in my setup has changed, which is why I believed it to be a xfinity issue. But when the tech connected to the modem and said he was seeing 900+ down it baffled me.
All the help is greatly appreciated.
