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Forum Discussion
CM 500 Modem connection drops
Several times a week I have to reboot my Netgear CM 500 modem to re-establish my download and upload speeds. Download speed drops to less than 1Mbps when I am rated for 30Mbps. Often I havce to reboot 2-3 times before I get a good connection. The modem logs (attached) show numerous warnings and other messages. The Cable Connection page (attached) shows many thousands of "Correctables". I know this is not a problem with the modem because I have switched this modem out with another CM 500 and both give the same results. Comcast absolutely insists that the problem is inside of my house.
Any assistance will be greatly appreciated.
John
5 Replies
Here's the "Cable Connection" screenshot demonstrating the many "Correctables".
John
Are you getting T3 and T4 timeouts in your event logs?
DarrenM
Yes, I am getting very frequent T3 timeouts. No T4 timeouts. The T3 timeouts occur as often as every 3 minutes but usually every 6-18 minutes.
John
Yea something is wrong with the connection from comcast it could be out in your neighborhood or even wiring in your home you will have to get comcast to send a tech out to investigate the lines.
DarrenM
