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Forum Discussion
Vojt
Aug 13, 2019Aspirant
CM1200 speed issue with Xfinity Gigabit service
Hello, I have gigabit service with Xfinity, and I did a speed test and pulled 950mbs, instead of renting the XB6 I purchased the CM1200, now my speeds are ~450MBps. I did not configurations on th...
Sleepdoc502
Jan 25, 2020Aspirant
Thanks for your help. I see that ethernet port aggregation is disabled for the CM1200 and I have disaconnected the other LAN devices I had connected. I reset the ORBI and was able to connect it to the internet. I now have problems with the sattelites connecting to the ORBI. While I upgraded the the cable modem, my whole house connectivity is markedly worse.
FURRYe38
Jan 25, 2020Guru - Experienced User
Please post over in the Orbi forum and we'll help you out.
https://community.netgear.com/t5/Orbi/bd-p/Orbi
30 feet is recommended in between RBR and RBS to begin with depending upon building materials when wirelessly connected. https://kb.netgear.com/000036466/How-far-should-I-place-my-Orbi-satellite-from-my-Orbi-router
Good Luck.
Sleepdoc502 wrote:
Thanks for your help. I see that ethernet port aggregation is disabled for the CM1200 and I have disaconnected the other LAN devices I had connected. I reset the ORBI and was able to connect it to the internet. I now have problems with the sattelites connecting to the ORBI. While I upgraded the the cable modem, my whole house connectivity is markedly worse.
- kiotehMar 23, 2020Guide
I'm having a very similar situation. Here's my setup.
cm1200 Nighthawk cable modem
RAX200 Nighthawk router
When I connect my Xfinity cable modem I see speeds of 950Mbps speeds. But when I swap it out for the cm1200 I see my speeds drop to 500Mbps. Any thoughts on why this might be? I really really like the features of the RAX200 so was hoping to use it but with the drop in speeds I'm seeing I'm going to have to stick with the Xfinity modem unless I can figure out why.
- FURRYe38Mar 23, 2020Guru - Experienced User
Have the ISP check the signal and line quality UP to the modem.
Be sure there are not coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.Be sure the ISP has provisioned the CM modem correctly.
Wire speed test with a PC directly connected to the CM1200 modem with out any router in the mix.
Be sure to reset the CM and RAX devices and set up from scrach. Speed test again with the RAX in the mix with a wired PC.
kioteh wrote:I'm having a very similar situation. Here's my setup.
cm1200 Nighthawk cable modem
RAX200 Nighthawk router
When I connect my Xfinity cable modem I see speeds of 950Mbps speeds. But when I swap it out for the cm1200 I see my speeds drop to 500Mbps. Any thoughts on why this might be? I really really like the features of the RAX200 so was hoping to use it but with the drop in speeds I'm seeing I'm going to have to stick with the Xfinity modem unless I can figure out why.
- kiotehMar 23, 2020Guide
"Have the ISP check the signal and line quality UP to the modem. "
-Had the ISP out on Friday and checked all connections up to the modem. As mentioned in my original post, the speed is fine if I change back to the ISP's modem, but see instant drop when I put the Netgear modem in.
"Be sure there are not coax cable line splitters in the between the modem and ISP service box."-There are not.
"Be sure your using good quality RG6 coax cable up to the modem."-ISP replaced the tips just to be sure, but again if it works fine with ISP modem I don't think this would be the case
"Be sure the ISP has provisioned the CM modem correctly."
-Not sure what all I can check here. Once I plug in the cm1200 Xfinity sends me a message to provision it and then it starts working, just not as fast. Any settings on the modem itself I should be checking?
"Wire speed test with a PC directly connected to the CM1200 modem with out any router in the mix. "
-When I'm performing my speed checks its just with the laptop plugged directly in to the cm1200.
"Be sure to reset the CM and RAX devices and set up from scrach. Speed test again with the RAX in the mix with a wired PC."-I can do this again if need be but I set the entire thing up with the assistance of Netgear phone support. Is there something that you would expect this to change in particular?
Are other people able to get 900+ Mbps using the cm1200? Is there any setting in particular that I might want to check for?