The CM1100 is now available at Costco and is on the supported list of Xfinity supported modems.
https://www.costco.com/Netgear-Nighthawk-CM1100-DOCSIS-3.1-Cable-Modem.product.100464287.html
I finally got a chance to hook mine up today replacing my Zoom/Motorola MB8600. So far, so good.
Pros over the MB8600 so far:
- Spectrum analyzer mode is available (I missed this on the MB8600, as I had it on my SB6183)
- Additional statistics are available for all of the different types of channels on the Netgear CM1100 vs the Motorola
Cons:
- Web GUI is a bit buggier than the Motorola
- Took longer to enter the walled garden than I am used to, even tried forcing DHCP renew. Took several minutes.
Here are the version numbers on my modem:
Hardware Version 2.02
Firmware Version V2.01.02
Immediately after activating the modem with my laptop, I enabled Ethernet Port Bonding/LACP-IEEE 802.3ad, and connected to my pfSense router. This appears to be working fine. Both IPv4 and IPv6 also appear to be working fine. I'll keep this updated if I have any problems.
I'm going to keep an eye on stability versus the MB8600. My MB8600 was finicky needing frequent reboots (once ever couple of days due to ARP black hole) with LACP disabled and less frequent reboots (once or twice a month) with LACP enabled. This was most likely a compatibility issue with the CMTS (appeared to be an Arris E6000 based on the Cadent MAC).
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