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Forum Discussion
Quick44
Jan 13, 2021Aspirant
Having a lot of issues with internet since switching to CM1100
So basically we had a 100mb down/30up connection and we decided to upgrade it to a gigabit connection and we had to upgrade both our modem and router. We got the CM1100 and the nighthawk x6S r7900p. ...
FURRYe38
Jan 13, 2021Guru - Experienced User
Be sure your testing the CM1100 modem wiith out the router online. The CM1100 is well capable of near 900Mpbs speeds on the wire.
Be sure to disable LAG on the modem.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no 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 to power OFF the modem for 1 minute them back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
Quick44
Jan 13, 2021Aspirant
I did do all of those as soon as you posted. I called my ISP to re-provision my modem, and for them to check the signal to my house. The problem still persists. When I get these weird spikes, I go to cmd and do ping -n 100 www.google.com and most packets are under 20ms but some of them are over 300ms which is why i think I see these problems persist without having any higher ping than usual or packet loss, but I have no idea how to fix it.
- FURRYe38Jan 13, 2021Guru - Experienced User
Are you testing with a wired PC directly connected to the modem alone or thru the router?
Has a factory reset been performed on the modem?
- Quick44Jan 13, 2021Aspirant
Yes I did both of those things and this is the cmd test pinging to www.google.com and as you can see it fluctuates a lot sometimes there is a huge spike.
https://imgur.com/a/HnPSfKd- FURRYe38Jan 13, 2021Guru - Experienced User
I'd ask the ISP for one of there modems so you can test one of theres. If the problem continues with one of there modems, this would be and ISP issue still. The ISP needs to check there signal on the line up to the modem, you should send them the modems logs.
Can you post the connection status table from your modem?
Would be something like this: