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Forum Discussion
C6300 AC1750 can't handle 300Mbps
We have WOW internet service. We currently have 110Mbps service.
Everything is working good. When we upgraded to 300Mbps the modem would not accept that speed.
The WOW customer service agent said the modem was telling them an error message that can't handle the speed or something like that.
We were still only getting 110Mbps. I talked to Best Buy Geek and they said it had something to do with Netgear making these for Timewarner or something like that.
Is there a setting or something that we can change to have it accept this higher speed?
Best Buy advised to bring the C6300 back and exchange for the Nighthawk model.
Seriously could use some help and good advise.
Thank you in advance for all your help.
6 Replies
Hello Maggie0404
C6300 support 16 downstream channels which means it should support speeds of up to 680 Mbps. The FW on the device does not limit the speed but some ISP may say that in order to subscribe to ISP speed of 300Mbps you much have a 24x8 Cable Gateway.Can you ask WOW if they allow 16x4 modems to be used for 300Mbps plans.DarrenM
Same problem in a way . . . . Had our Ultra (300/26) service working fine on an Arris TW router/modem. Upgraded to the Netgear AC C6300 1750 combo and it connected up fine after I called TW and gave them the MAC address . . . . After reconnecting everything just like before, the wireless connections achieved the service speed, but all my wired connections came back at 22 / 11 or similar. Called the GURUAID support number that SEEMED to be connected to the Netgear support site, asked them if they worked for NETGEAR and the said "Yes of Course" and then proceeded to tell me that I needed "Premium Support" for extra money to properly setup the modem, and after I yelled and screamed a bit, did give me the "clue" that the Router choked bandwidth from the wired connections to enable a greater WIFI signal, perhaps with the MIMO settings etc, but refused to give me any other clue as to how to configure the router. I configured the WIRELESS settings in the router menu to 25% power and lower speeds, and then reset the modem router and that seemed to increase the speed a bit but not anywhere near where it should be. (28/18) instead of the (358/26) I was getting on my WIFI connected cell phone or the previously wired connection with the ARRIS TW router/modem. I have gone through a couple complete restarts of the C6300, and now just getting (19/19mbps) with the wired connection. A bit of a mystery with an allegedly state of the art Router/Modem . . . .
Netgear Support helped me by changing the WIRELESS channels to 9 and 161 respectively for 2G and 5G, and setting the MTU in WAN settings to 1478 and the CTS/RTS Settings in the LAN to 2305 from the default . . . . This appeared to speed up the connection in a subsequent test for my wired computer, to about half of my provided ISP speed (120/18) for (300/26) which was much better than the previous test, but still somewhat reduced. I asked the technician about why this helped, and she said something relatively unintelligible about packets and channel collisions, but I decided not to pursue it since it seemed to work. Subsequently my speed seemed to get back a bit lower, but still seems workable.
Just upgraded to TW Spectrum 300mbs service, and both the 2.4 and 5ghz will not achieve anything more than the original ~100mbps via wireless. The wired speed does hit the 300mbps no problem. Even after multiple factory resets, the wireless using the sanctioned netgear 2.0.14 firmware does not provide the speed. Can someone from Netgear talk to someone at Spectrum and confirm this? Anyone know if the C7000 with it's channel bonding would fix this?
Hello Circadianswing
Do you have a older device that is not a 802.11AC device connected to the wireless this will pull the speed down on the wireless so try connecting your older devices to the 2.4ghz and your new ones on the 5ghz.
DarrenM
Hi Darren, I think what you said may be true.. 300mbps service from spectrum / time warner may need the 24x8 channel bonding, available in the newer nighthawk version of the router/modem. I moved on to an Arris 32 channel cable modem and tried a number of high end routers from other brands, only to have other issues with client wifi devices. In the end, I rolled back to 100mbps service with spectrum, and re-attached this modem/router combo. Everything works again. it was 2 weeks of unsuccessful testing.
