I am trying to get my new Netgear CG3000dv2 N450 modem to activate on the Comcast network. Comcast activation team worked to activate it during 2 lengthy sessions this week while talking to me over the phone. An onsite visit by a Comcast technician was not successful either. The technician found that our cable connectivity is well within normal parameters. Our old Motorola Surfboard SB5101 is currently functional on the starter performance package (6 down/1up).
Numerous attempts have been made including resetting the Netgear to factory defaults and re-adding the device to our account.
The Netgear locks fine on the upstream & downstream channels and the power levels and SNR are nearly perfect as viewed on the Netgear admin interface's Connection status.
The cabling is a home run all the way from the router to where the Comcast cable enters our cabin.
I have attempted adding a splitter to see if the signal was too good but this made no difference. I could see difference in the power level and SNR though as viewed on the Netgear admin interface.
The Internet light does not go solid and activation is unsuccessful.
The Comcast activation page was seen on our PC during one of the early troubleshooting sessions.
The CG3000dv2 N450 was recently purchased in March and was working perfectly for 2 months on the Cox network at our winter home in Arizona. I believe the device is functioning properly.
The CG3000dv2 N450 is on the "approved" list of Comcast (and Cox) devices but is fairly new with the retail version release this year.
Troubleshooting with Netgear is underway. The Netgear is currently running firmware version 1.03.03. This may have been an update provided by Cox as the initial release is 1.02.10.
I'm attempting to roll back the firmware (tftp client procedure using a PC) but would like to confirm the supported firmware on the Comcast network for this device. The Comcast activation team stated that they don't have access to this information but escalated the question to 2nd level support as of last evening. I'm waiting to hear back.
Netgear claims the CG3000dv2 works just fine on the Comcast network. The device log indicates IPv6 connectivity on the Comcast network but a critical error SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing is reported. Their only reasonable suggestion so far is that there might be an incompatibility in this version of firmware on the Comcast network.
Does anyone have the CG3000dv2 N450 running on the Comcast network?
What version of the firmware is it running?
Does Comcast push down new firmware versions and what is the current version for this model?
The Comcast tech stated the Internet light should go solid even if the Netgear isn't the primary on our account and is just plugged into the cable (our Motorola is primary currently). Can anyone confirm this?