Hi, I have search the forum and found the exact same issue but was told to create my own thread. So here I am. Situation: Runnning a CM1100 on a Xfinity Gigabit line, HW 2.02 / FW 2.01.02 I connect with a cable (yes I have switched cables already) to the modem directly. Speed tests show 200-400 G depending on the website I use. Modem rebooted, resetted. Spoken to Xfinity but still at low speed.

Thanks for creating your own post! 1. How many connections between your modem and where it enters the house? 2. splitters amplifiers in line? 3. Can you post a screen snip of your logs and your configuration page with upload/dowload signal strength/etc. 4. What device are you testing on? (specifics) 5. have you tried other devices? 6. have you ever gotten gigabit speeds on your connection?

I can not post - for some reason it is deleting my message immediately after posting

Ok - that worked. Sorry for the various posts. 1) No connections - cable goes directly to the modem. 2) No splitters or amps 3) see post above 4) Macbook Pro 2018 - Lenovo Laptop - Standard PC with Intel 8700 CPU and 32GB Ram, Samsung NVME 5) Only the three above 6) Yes, but not with this modem

Netgear CM1100 with Xfinity Gigabit - speed issue

11 Replies

plemans
Guru - Experienced User
May 07, 2019
Thanks for creating your own post!

1. How many connections between your modem and where it enters the house?

2. splitters amplifiers in line?

3. Can you post a screen snip of your logs and your configuration page with upload/dowload signal strength/etc.

4. What device are you testing on? (specifics)

5. have you tried other devices?

6. have you ever gotten gigabit speeds on your connection?
- sjbhh
  Apprentice
  May 07, 2019
  I can not post - for some reason it is deleting my message immediately after posting
  - sjbhh
    Apprentice
    May 07, 2019

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Netgear CM1100 with Xfinity Gigabit - speed issue