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Please Help CM1200 Modem Speed Slowdown require constant rebooting
For the last three weeks, my internet speed drops drastically from over 950 Mbps to 30 MBps. Rebooting the modem restores the speed but lasts only for a day or two. There are many threads on si...
Ok, next time please post the cable connections and event logs from the CM modem so we can help check and ensure problems seen on a modem may not be modem related, may ISP signal related. All things needs to be check upstream first before claiming the modem is the problem.
Enjoy.
zunka wrote:The ISP Technician replaced all outside connectors (i.e. on the pole, outside the house). He also replaced the splitter and wire inside the house up to the Modem.
On his diagnostic device (don't know what it is called), he showed me the signal strength was good, stable and without any noise.
He had another device that was showing diagnostics after connecting the modem. It was failing a test. The upstream bonded channel power was too high (about 53 dBmV).
He concluded that most likely modem is faulty because we had just replaced the wires, spitter and checked the signal quality in the coaxial cable.
Want to get your opinion before I replace the modem.
Please let me know your thoughts.
Now that the connections have been replaced, review of your cable connection page would be in order before buying a new modem. Please post.
The CM1200 is an older design. Be sure and look at the approved modem list from your ISP before choosing a replacement.
Please see attached the modem logs. It no longer has the "critical" errors.
Please take a look and let me know what you think.
Is it still worth considering a new modem? Optimum (ISP) recommends ARIS modems.
Spoke too early. Got a "Critical" error just few minutes ago:
An occasional critical error, one or two a day, is not considered catastrophic unless you continue to experience the problems you originally posted about. You will normally experience one or two critical errors each time as part of the modem boot process.
The design of your CM1200 is still a generation or two old.
Recommend you run what you have for a few weeks to test it out. You could find a good price on a new or refurbished modem after the holidays. Make sure of more than just the brand name when choosing a replacement. Not all models from a manufacturer will work for a specific ISP.
That is good to know.
I have not yet experienced a speed slowdown. The speed is good and quite consistent. Keeping my fingers crossed. Will keep monitoring for two weeks then decide.
Thank you for your help.
You still have a ton of correctables/uncorrectables in the file you had. Thats concerning
