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Forum Discussion
AC1750 R6400V2 Slow with Centurylink Fiber
I have been using this same Router for 2 years with Cox Cable Modem. I paid for 150mbps/5mbps (Down/Up respectively). I never got that speed, but it was fast enough so I didn't complain (30/5). ...
A couple things.
1. the C4000XG is actually a much faster router than the R6400. The R6400 is an older base model gigabit device. The C4000XG is quite a bit newer, newer wifi protocol, and is going to be faster
2. If you're going C4000XG---->R64000 you're in a double nat.
A double nat happens when you cascade more than 1 router.
https://kb.netgear.com/30186/What-is-Double-NAT
Fixes? There’s 3 options but only use 1.
1. Put the modem/gateway in modem only/pass through mode. This disables its routing functions.
2. Leave the modem/gateway in router mode but put the Netgears IP address into its DMZ. This forwards the data to the netgear. You can either leave the modem/gateway’s wireless enabled or disabled. Just make sure its using a different wifi channel to prevent interference
3. Put the Netgear into access point mode. This disables its routing functions. Wifi/ethernet still works but it does disable some features.
https://kb.netgear.com/26765/Which-features-are-disabled-on-my-NETGEAR-router-when-it-is-set-to-AP-Mode
3. Factory reset the R6400 if you're planning on using it. Make sure to leave qos, access controls, traffic monitoring, and parental controls all disabled. They can slow speeds do. Also log into the r6400 wan/lan statistics page and confirm its connecting at gigabit speeds. Your 90 mbps download speeds make me concerned its not connecting gigabit.
https://kb.netgear.com/24222/How-do-I-display-Internet-port-statistics-on-my-Nighthawk-router