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CM1150V multi gig support?
According the the specs on m CM1150V cable modem (with voice), it should support Docsis 3.1 at multi-gig speeds. However, ti appears that Comcast (Xfinity) won't configure it for multi-gig speeds even if I have multi-gig service. They want me to upgrade to a newer modem (either rent one from them or buy one such as the CM2050V).
Can someone tell them how to configure this modem to provide me with multi-gig speed?
Due to a single coax line to the modem and your ISP only gives 1 WAN IP address and the 1Gb ports and the ISP isn't supporting this model model on there network for the 2.5Gb speed tier. You'll need a modem on there mid split/higher speed tier to take advantage of the higher speed beyond 1Gb. Just how it is. NG CM2000 series and 3000 series have 2.5Gb and higher WAN ports. the CM1000 series do not. The CM1150v has 4 WAN ports however those are only assignable by the ISP and most ISPs only give out 1 IP address, so this would be a limitation by the ISP as well for the CM1000 series.
If you really don't need 2.5Gb speeds then keep what you have. I'm still on a 1Gb line with my ISP and it services 4 people nicely.
5 Replies
Mostly due to the 1Gb LAN ports in back. Can only handle up to 1Gb on each port.
Most ISPs and users don't use Link Aggregation either.
Up to ISPs to support modems on there network for the speeds they market.
I understand about the 1 gig Ethernet port. I can use link aggregation on the cable modem and my router to get higher speed. And that will give me more capacity out of my router.
Xfinity is willing to upgrade me to 2 gig. But they want me to get a new modem. But what I am trying to figure out is why they won't configure the 1150V for that since it supposedly supports it.
Due to a single coax line to the modem and your ISP only gives 1 WAN IP address and the 1Gb ports and the ISP isn't supporting this model model on there network for the 2.5Gb speed tier. You'll need a modem on there mid split/higher speed tier to take advantage of the higher speed beyond 1Gb. Just how it is. NG CM2000 series and 3000 series have 2.5Gb and higher WAN ports. the CM1000 series do not. The CM1150v has 4 WAN ports however those are only assignable by the ISP and most ISPs only give out 1 IP address, so this would be a limitation by the ISP as well for the CM1000 series.
If you really don't need 2.5Gb speeds then keep what you have. I'm still on a 1Gb line with my ISP and it services 4 people nicely.