Netgear CM1000-100NAS DOCSIS 3.1 Gigabit Cable Modem

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DOCSIS 3.1 Gigabit Cable Modem

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Overview

The Netgear CM1000-100NAS is a high-performance DOCSIS 3.1 cable modem engineered to provide a reliable, high-bandwidth gateway for small-to-medium business (SMB) environments, remote branch offices, and sophisticated SOHO setups. As a dedicated bridge device, it facilitates the transition from legacy DOCSIS 3.0 infrastructure to modern DOCSIS 3.1 standards, offering up to ten times faster download speeds than previous generations. This modem is an ideal solution for edge deployments where a stable, high-throughput connection to the WAN is critical for VoIP, video conferencing, and cloud-based applications.

By utilizing 32x8 channel bonding for DOCSIS 3.0 and 2x2 OFDM/OFDMA for DOCSIS 3.1, the CM1000 ensures consistent performance even during peak network congestion. It is designed for seamless integration with existing enterprise firewalls and routers, allowing IT administrators to maintain full control over the local network stack without the interference of integrated ISP gateway software. This hardware-only approach eliminates monthly equipment rental fees while providing a cleaner, more manageable network perimeter. The device is certified for major US cable providers, ensuring broad compatibility across diverse geographic locations.

Key Features

- DOCSIS 3.1 technology for gigabit-speed internet access.
- Backward compatible with DOCSIS 3.0 32x8 channel bonding.
- Single Gigabit Ethernet port for high-speed LAN bridging.
- Certified for Xfinity, Cox, and Spectrum cable networks.

Specifications

Brand	Netgear
Part Number	CM1000-100NAS
Product Type	Cable Modem
DOCSIS Version	3.1 (Backward compatible with 3.0)
Channel Bonding	32x8 (DOCSIS 3.0) / 2x2 OFDM (DOCSIS 3.1)
Max Throughput	1 Gbps (Limited by Ethernet Port)
Ethernet Ports	1 x 10/100/1000 Mbps RJ-45
Coaxial Port	1 x F-Connector (75 Ohm)
IPv6 Support	Yes (Dual Stack)
Dimensions	224 x 89 x 178 mm
Weight	380 g
Power Supply	12V / 1.5A
Operating Temperature	0°C to 40°C

Frequently Asked Questions

Does this modem support integrated Wi-Fi or routing functions?

No, the CM1000-100NAS is a dedicated bridge modem. It requires a separate router or firewall to manage local network traffic, DHCP, and wireless connectivity.

Is the CM1000 compatible with fiber-to-the-home (FTTH) or DSL services?

No, this device is specifically designed for cable internet providers using coaxial (RG6) infrastructure. It is not compatible with DSL or Fiber-only ONT deployments.

Can this modem handle multi-gigabit internet plans above 1Gbps?

While the DOCSIS 3.1 standard supports multi-gigabit speeds, the CM1000 is equipped with a single 1Gbps Ethernet port, which limits the maximum output to the local network to 1Gbps.

Netgear CM1000-100NAS DOCSIS 3.1 Gigabit Cable Modem

DOCSIS 3.1 Gigabit Cable Modem

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Detailed Specifications