NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Solved
R6300-AC1750 Router doesn't connect to CM600
My R6300 Router will not connect to my new netgear CM600 cable modem. The internet light remains amber. I've done the appropriate power down/reboots on the modem and router with no success. I've done ...
I started thinking about firmware after my last post. I did some testing and found that if I reset the reset the router to the factory settings and then reverted to the previous firmware for the R6300 (1.0.2.76) the Router would then connect to the DHCP on the CM600. I could then update to the current firmware and still retain the internet connection. If I applied a saved cfg file to the router from current firmware I could replicate the problem with the internet connection. The repair process was repeated: clear the cfg settings by resetting the router to the factory settings, revert to the previous firmware and then update to the current firmware. Everything was fine with the internet connection with the CM600
Did you enable Downstream QoS by chance? There seems to be an issue with that setting basically bricking the router in the .18 firmware.
It was enabled and I've shut it off now without seeing a change after power cycling and rebooting. Interestingly, the Router worked fine with a previous CM600 with QoS enabled.
There was something in the .18 firmware that caused Downstream QoS to brick the ability of it to get an IP from DHCP while in router mode.
Now after looking at everything else, it may have been the QoS setting that killed the connection with the first CM600 and, assumably the reason why the second never worked. With the first CM600 the quality of the connection on the network was fine at first and slowy started deteriorating. Then it got to the point where I was geeting dropped connections with an online game and speedtests were showing a great deal of lag, etc. That's why I returned the first one, I was thinking that it was a hardware issue with the LAN port on the CM600.
I started thinking about firmware after my last post. I did some testing and found that if I reset the reset the router to the factory settings and then reverted to the previous firmware for the R6300 (1.0.2.76) the Router would then connect to the DHCP on the CM600. I could then update to the current firmware and still retain the internet connection. If I applied a saved cfg file to the router from current firmware I could replicate the problem with the internet connection. The repair process was repeated: clear the cfg settings by resetting the router to the factory settings, revert to the previous firmware and then update to the current firmware. Everything was fine with the internet connection with the CM600
That's good and all but sucks if you have multiple port forwarding configs and other things going on that were working fine before the firmware/QoS setting broke things.