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CM 1100 no longer xFinity Compatible
The CM 1100 cable modem is no longer compatible to use with xFinity. They can no longer see or talk to the modem. On their webpage they show INCOMPATIBLE BASED ON FILTERS. Customer service confir...
The the CM has LAG support, base speed support is for 1Gb and in most cases home users don't use LAG. Even the WAN ports are only rated at 1Gb per port so technically, the CM1100 reaches this limit on a single 1Gb line.
We know the ISP recently split there speed tier last year, now 800Mpbs and 1.2Gb. Were seeing problems with some other modems that only support 1Gb on the WAN and LAN side and the ISP up'd the speed to 1.2Gb. The ISP has not certified these modems for 1.2Gb services. So this change is on the ISP side.
One thing to try, have the ISP set your speed package at 800Mpbs.
Another would be to test the CM1100 at a different location, friends or family that may have a different ISP service or speed tier and see if the modem responds differently there.
Or find something that handles 1.2Gb or higher speeds. NG CM2000 series comes to mind since those have 2.5Gb WAN port.
Thanks for the reply.
If you drop your filter down to the 800mbps service, its compatible (I checked on my xfinity). Not sure I would want tjis as I am paying for the higher Gig service & have daughter working from home.
Netgear can't control what xfinity or any ISP sets for their compatible list. Understand
but it should still work fine. Does work fine but xfinity upgrades not longer possible
So if its not, it could either be a line issue or a modem issue.
Are you able to log into the cm1100 and check its cable connections page and event logs? Cannot log into modem, not even sure how to do that.
Might have to bite the bullet & replace modem to get the gigs I am paying for. Looking at Arris S33
J
The the CM has LAG support, base speed support is for 1Gb and in most cases home users don't use LAG. Even the WAN ports are only rated at 1Gb per port so technically, the CM1100 reaches this limit on a single 1Gb line.
We know the ISP recently split there speed tier last year, now 800Mpbs and 1.2Gb. Were seeing problems with some other modems that only support 1Gb on the WAN and LAN side and the ISP up'd the speed to 1.2Gb. The ISP has not certified these modems for 1.2Gb services. So this change is on the ISP side.
One thing to try, have the ISP set your speed package at 800Mpbs.
Another would be to test the CM1100 at a different location, friends or family that may have a different ISP service or speed tier and see if the modem responds differently there.
Or find something that handles 1.2Gb or higher speeds. NG CM2000 series comes to mind since those have 2.5Gb WAN port.