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Forum Discussion
CarrieF
Dec 07, 2025Aspirant
CM1100 and Mesh 6 system not working after power failure; all lights working fine
Greetings! - CM1100 modem and MR60 mesh router (2 satellites) installed June of 2021. Comcast is my ISP in the PNW and is relatively reliable historically. - Over last 4 years, I've had to p...
- Dec 15, 2025
Ok you got in. This is good.
Yes, two LAN ports however one will only be active with your ISP. Usually LAN1 is active. However seems you have LAN2 working.
Looking at your cable connections data, looks good and power levels are with in specs: https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
Correctables and Un-correctables should remain zero or may some some slow up tickin value numbers, however should not see major high values here.
The event logs looks bad though. 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.
CarrieF wrote:
I think I may have stumbled upon an incorrect configuration that's been present for awhile. I have no idea if it has anything to do with the recent issues.
In reading my user manual for the CM1100, it appears while there are two LAN ethernet ports, only one is functional at a time in normal circumstances (aside from port aggregation, which I doubt I need or use). Ever since issues I had with the router a few years ago, I've been utilizing wifi on the desktop computer, even though the ethernet cable has been connected directly to the modem. I always wondered why this didn't work but didn't take the time to dive into it since the wifi worked well.
Tonight, I removed the ethernet cable that had connected the desktop computer to LAN 2 in the modem and plugged it into the second ethernet port on the router instead. Now, my desktop has hard-wired ethernet and the wifi works (after two additional power-cycles of the modem and router).
Again, not sure this has anything to do with my issues recently, since these cables have been in these positions for years.
I am going to pick up a new modem tomorrow when I am out, as I'm starting to think it's worth having a backup around.
If the logs provide any helpful insight to you, let me know. I really appreciate all your assistance on this!
CarrieF
Dec 14, 2025Aspirant
I can leave the computer on while I reset the modem? Same with router?
I'll give this a try.
FURRYe38
Dec 14, 2025Guru - Experienced User
Yes.
- CarrieFDec 14, 2025Aspirant
I unplugged the coax cable from the modem and hit the reset button on the modem for 15 seconds. I waited about 10 minutes. I am unable to connect to the IP address 198.168.100.1. I also tried the alternative IP (10.0.0.1) and get the same messages as below.
Error message from Firefox:
I receive a similar message from Chrome:- FURRYe38Dec 14, 2025Guru - Experienced User
Is this with a PC directly connected behind the modem or is your external wifi router still connected?
Try with one PC directly connected behind the modem with out the external router.
- CarrieFDec 14, 2025Aspirant
Yes, there is an ethernet cable connecting the desktop PC directly to the modem. I'll re-do the process after disconnecting the ethernet cable that goes from the modem to the router now.