Downstream LED flashing on my NetGear Cable Modem?

FWIW. If you are able to access the internet, then the modem is indeed locked onto a downstream channel. Let's take a look at the modem's signal stats.

Try getting them here; http://192.168.100.1  

Please copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.

What is the exact model number of the Netgear modem  ?

Can not connect via wifi through Linksys Velop Router to those IP addresses.

What do I need to do to connect to the modem.

Thanks

Try connecting a computer directly to the Velop with an ethernet cable. 

To connect to a netgear modem use 192.168.1.1  .

@RLM5 

I'll ask again. What is the exact model number of the Netgear cable modem ? Have you tried powercycling / rebooting it to see if it stops blinking ?

Modem is CM1100.  Have not powercycled because everything is working fine.  Just wondering why this thing keeps blinking.  Maybe it always has and I just noticed it.

Thanks

O/k well the access address is as I stated;

Netgear CM1100 Login Guide

• Open your web browser (e.g. Chrome, Firefox, Opera or any other browser)
• Type 192.168.100.1 (the default IP to access the admin interface) in the address bar of your internet browser to access the web-based user interface.
• You should see 2 text fields where you can enter a username and a password.
• The default username for your Netgear CM1100 is admin.
  The default password is password.
• Enter the username & password, hit "Enter" and now you should see the control panel of your router.

Here is the information requested.  The green LED modem light for the channel lock is still flashing.

@RLM5 

Your post with that pic of the error log entries was marked as being "Private" by the forum software because it contains CM MAC and the CMTS MAC addresses. They are considered to be personal information. The posting of personally identifiable information is a violation of their forum guidelines.

That said. The upstream is too high / out of spec. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.

In an effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1000 MHz, bi-directional, and no gold colored garbage from Radio Shack, Home Depot, Target, etc. Splitters should be swapped with known to be good / new ones to test.

Also check the coax cable for any damage such as cuts, nicks, abrasions, kinks, sharp bends, etc.

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two-way splitter connected directly off of the drop from the street / pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.

Good luck with it !

Comcast re-flashed my modem and the LED is no longer flashing.

For curiosity, what do the modem's signal stat figures look like now ? If the upstream power is still 51 dB or higher, it's still too high and is a problem just waiting to resurface.

So it is back flashing again.  The fix reboot from Comcast did not fix the flashing channel lock LED for long.

How do you fix this so it sticks.  I do not want to booting and interrupting my network.

Or maybe I should just forget about it, ignore it.

Comments???