I can't figure this out. I have a CM1150V Cable Modem and Nighthawk AC2600 / R7450 Wi-Fi Router and am only able to get a maximum of just over 400Mbps download speed. I have confirmed this using the built-in speed test, a hard-wired ethernet connection, and several wi-fi devices performing simultanious speed tests. The max combined speed of all devices is 'only' ~400Mbps. Both the router and modem are using the latest firmware and I have tried several Cat5e and Cat6 cables between the router and modem. They all give me the same link speed. I had a rep from my service provider confirm that my cable wire is good and he was able to reach the full 1.2 Gbps using his diagnostic tool. Any suggestions?

Connect a wired PC to the back of the CM1150v and test your speeds with out the 7 series router online. Possible that your 7 series router maybe the bottle neck and not fully supporing of 900Mpbs which this model router only has 1000Mps WAN and LAN ports and won't see much over 900Mpbs if it supports higher speeds WAN to LAN. https://www.netgear.com/images/datasheet/networking/wifirouter/R7450.pdf Five (5) 10/100/1000Mbps—(1 WAN & 4LAN) Gigabit Ethernet ports Same goes for the CM1150v, its WAN ports are only rated at 1000Mpbs so you'll not see much over 900Mpbs. Nothing at 1.2Gb. Also your LAN adapter maybe rated for the same, 1000Mpbs.

Thanks for the reply. I'll try a direct-wired speedtest tonight to confirm the Modem isn't the issue. The WAN port is definately a bottle neck for over 1Gbps, but I should be able to get more than 400Mbps over it. I expected at least 800-900Mbps since this is typically what the videos I've seen on YouTube are getting for Gbit Cable Modem service ising the ISP-provided modem. This is less than 1/2 what I should be getting, but all the hardware seems to be condigured properly. I've got to be missing something, but I have no idea what it could be.

Id do a full on factory reset and setup the router from scratch. Power OFF the modem for 1 minute then back on. Do not enable any additonial features like QoS, Access Controls, Armor, Traffic Meter or Parental controls. Test with a wired PC connected to the router only. Don't have any other devices connected and use Ooklas speed test app to test the speed. I found that the onboard speed test on the routers web page may not report accurate results on 7 and 8 series routers. See what speeds you get after a reset...

OK. I was hoping to avoid a factory reset because I've set up a lot of devices with reserved IP addresses. If I back up the configuration and restore it after the factory reset, would that potentially carry over any issues? I'll let you know what I see either way. Thanks for the suggestions.

first try a reset with out the back up config file applied.

Only getting ~400Mbps down on 1.2Gbps service with CM1150V Cable Modem and Nighthawk AC2600 (R7450)

11 Replies

FURRYe38
Guru - Experienced User
Feb 22, 2022
Connect a wired PC to the back of the CM1150v and test your speeds with out the 7 series router online.

Possible that your 7 series router maybe the bottle neck and not fully supporing of 900Mpbs which this model router only has 1000Mps WAN and LAN ports and won't see much over 900Mpbs if it supports higher speeds WAN to LAN.

https://www.netgear.com/images/datasheet/networking/wifirouter/R7450.pdf

Five (5) 10/100/1000Mbps—(1 WAN & 4
LAN) Gigabit Ethernet ports

Same goes for the CM1150v, its WAN ports are only rated at 1000Mpbs so you'll not see much over 900Mpbs. Nothing at 1.2Gb.

Also your LAN adapter maybe rated for the same, 1000Mpbs.
- rhosue21
  Aspirant
  Feb 22, 2022
  Thanks for the reply. I'll try a direct-wired speedtest tonight to confirm the Modem isn't the issue.
  
  The WAN port is definately a bottle neck for over 1Gbps, but I should be able to get more than 400Mbps over it. I expected at least 800-900Mbps since this is typically what the videos I've seen on YouTube are getting for Gbit Cable Modem service ising the ISP-provided modem. This is less than 1/2 what I should be getting, but all the hardware seems to be condigured properly.
  
  I've got to be missing something, but I have no idea what it could be.
  - FURRYe38
    Guru - Experienced User
    Feb 22, 2022
    Id do a full on factory reset and setup the router from scratch. Power OFF the modem for 1 minute then back on. Do not enable any additonial features like QoS, Access Controls, Armor, Traffic Meter or Parental controls. Test with a wired PC connected to the router only. Don't have any other devices connected and use Ooklas speed test app to test the speed. I found that the onboard speed test on the routers web page may not report accurate results on 7 and 8 series routers.
    
    See what speeds you get after a reset...

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Only getting ~400Mbps down on 1.2Gbps service with CM1150V Cable Modem and Nighthawk AC2600 (R7450)