Comnet Hardened 11 Port 1000Mbps Managed Switch three 1000TX/FX SFP Ports eight - CNGE11FX3TX8MSK

Comnet CNGE11FX3TX8MSK Hardened 11-Port Industrial Managed Switch

Overview

The Comnet CNGE11FX3TX8MSK is an 11-port managed switch built for hardened surveillance and IP camera deployments where industrial-grade reliability matters more than consumer-class simplicity. You get 8 gigabit copper ports (RJ-45) plus 3 SFP fiber ports, all fed by a 28 Gbps backplane with 7 microsecond latency — fast enough to prevent packet loss across simultaneous multi-camera streams. The 240W PoE power budget means you can push power to up to 12–15 cameras depending on their draw, and the -40 to +75°C operating range covers rooftop, outdoor cabinet, and unheated warehouse environments without special fans or cooling logic.

Key Features

• 28 Gbps switching bandwidth with 7 μS latency: Non-blocking fabric prevents bottlenecks when all eight copper ports and three fiber ports are active simultaneously. Critical if you're consolidating video from multiple camera racks or running redundant network paths through the same hardware.
• 8×1000 Mbps copper + 3×SFP fiber ports: Copper handles standard IP camera and PoE injector connections; fiber SFP slots let you run long-distance backbone links (multimode to 2 km, single-mode to 15+ km depending on optic choice) without signal regeneration or repeaters.
• 240W PoE power budget (802.3at compliant): Enough capacity for roughly eight to twelve standard PoE cameras simultaneously, depending on individual device draw. No need for separate inline injectors on every drop if your power supply is adequate.
• Managed switching with VLAN, STP, RSTP, MSTP, ERPS support: Segregate camera traffic from IT traffic, prevent loops in ring topologies, and support Ethernet Ring Protection Switching if you're building a closed-loop surveillance network. Each feature cuts down broadcast storms and improves security posture.
• SNMP, RADIUS, TACACS, ACL, and IP Sourceguard compatibility: Centralized monitoring via SNMP traps; enterprise authentication via RADIUS or TACACS; access control lists to block unauthorized devices; and IP Sourceguard to prevent DHCP spoofing. Standard tooling for integrators managing 50+ cameras across multiple sites.
• 1 GB DRAM + 128 MB flash; 8K MAC table; 256 VLANs; 32 static routes: Sufficient memory for typical surveillance networks (up to 8,000 unique MAC addresses on the switch at once) and enough VLAN groups to isolate camera networks by building, floor, or PTZ vs. fixed configurations. 32 routes handles basic static routing if you're not running full dynamic protocols.
• DIN rail or wall mount; compact 6.0 × 3.5 × 4.5 inches: Mounts in standard 35 mm DIN rail cabinets (outdoor or indoor). Fits in small network closets and doesn't demand rack space.
• -40 to +75°C operating; 5–95% humidity non-condensing: Survival range covers hot attics, cold loading docks, and humid coastal areas without sealed enclosures. MTBF >100,000 hours means statistically 11+ years of mean-time-between-failures under continuous duty.
• Jumbo frame support (9.6 KB): If you're using large MTU sizes for low-latency camera streams or bulk evidence export, no fragmentation overhead.
• FCC, CISPR, EN60950-1, EN50121-4 compliance: Passes EMC and safety testing for industrial and railway environments. IEC60068 shock, vibration, and free-fall ratings confirm ruggedness beyond office-class hardware.

Integration & Compatibility

The CNGE11FX3TX8MSK pairs with Comnet's recommended power supplies (PS-A12060 for 120W @ 12 VDC or PS-A24060 for 240W @ 24 VDC). It supports managed switch standards including LLDP discovery, DHCP relay, SNTP client for time synchronization, and CLI access via serial console. Razberi Monitor and E Vision monitoring platforms recognize it natively. Fault Contact Relay output signals link to site alarm panels if a port fails or power drops. PEAP (Protected EAP) requires vendor support verification before deployment in enterprise 802.1X environments.

What's in the Box

Evidence does not specify exact package contents. Confirm with your distributor or pre-sales engineer to verify included cables, power supply options, and mounting hardware.

Frequently Asked Questions

Q: What's the warranty on the CNGE11FX3TX8MSK?

A: Comnet provides manufacturer warranty coverage. Contact pre-sales engineering for the specific term and replacement procedure for this industrial switch model.

Q: Can I use the CNGE11FX3TX8MSK in a -40°C outdoor cabinet?

A: Yes. The switch is rated -40 to +75°C operating temperature, and meets IEC60068-2-6 (vibration), IEC60068-2-27 (shock), and IEC60068-2-32 (free fall) standards for harsh environments. No heater or fan is required at the lower end of that range.

Q: What power supply should I use with the CNGE11FX3TX8MSK?

A: Comnet recommends the PS-A12060 (minimum) or PS-A24060 as the primary choice. Both fit the 12–57 VDC input range. Use PS-A12060 if you're running the switch alone; PS-A24060 if you need the full 240W PoE budget for a dozen high-draw cameras.

Q: Does the CNGE11FX3TX8MSK support fiber connections?

A: Yes. Three SFP (Small Form-factor Pluggable) slots accept standard 1000BASE-SX, 1000BASE-LX, or 1000BASE-ZX optics. You supply the optics; multimode covers ~2 km, single-mode covers 15+ km depending on wavelength and insertion loss.

Q: Can I use the CNGE11FX3TX8MSK in a ring topology for redundancy?

A: Yes. The switch supports STP, RSTP, MSTP, and ERPS (Ethernet Ring Protection Switching). ERPS is the fastest option for ring failover (sub-50 ms). Configure one port as the ring protection link (RPL) and the rest as ring ports; traffic automatically reroutes if a link fails.

Q: Is the CNGE11FX3TX8MSK NDAA Section 889 compliant?

A: Evidence does not confirm NDAA compliance for this model. Contact Comnet pre-sales or your integrator to verify against current Section 889 requirements if this is a contractual mandate.

Karl Wilson

The CNGE11FX3TX8MSK is one of the few hardened switches I spec regularly for surveillance networks that span outdoor cabinets and unheated spaces. Most integrators don't realize that consumer-grade switches fail silently in cold or dusty environments — they just silently drop packets or lock up. This unit's -40 to +75°C spec and MTBF >100,000 hours means you're not replacing it every 18 months. I've deployed it in parking garage networks, rooftop camera clusters, and vehicle-mounted systems where temperature swings are extreme.

Technical Highlights:

• 28 Gbps backplane + 7 μS switching latency: No packet loss even if all 11 ports are pushing video simultaneously. In real installations, I've saturated 8 or 9 gigabit camera feeds (multi-sensor, high-frame-rate PTZ) through this switch without any observable buffer overflow. Compare that to a cheap managed switch where you'll see dropped frames and VMS warnings.
• 240W PoE budget with 802.3at support: Covers roughly 12 standard PoE cameras at 20W each. I typically pair this with a PS-A24060 supply to hit the full budget. For sites with a mix of powered and unpowered cameras, this is the sweet spot — you don't need a separate PoE injector rack.
• 256 VLANs + ACL + IP Sourceguard: Critical for isolating camera subnets from office IT traffic and preventing rogue devices from flooding the camera network with DHCP requests or ARP spoofs. In multi-tenant or campus environments, VLAN segmentation saves hours of troubleshooting.
• SFP fiber ports + ERPS ring support: If your camera backbone runs 300+ meters or needs to cross electrical noise zones (near power distribution or heavy machinery), fiber SFP links isolate the galvanic loop. Add ERPS and you've got sub-50 ms failover if the primary link goes down. No loops, no manual intervention.

Deployment Considerations:

• The CNGE11FX3TX8MSK requires a dedicated 12–57 VDC power supply (PS-A12060 or PS-A24060). Don't try to power it from a single 12V PoE injector — you'll throttle the PoE output. Always use the recommended supply.
• If you're running ERPS (ring mode), carefully plan your ring port designations and test failover before going live. ERPS convergence is fast (~30 ms), but a misconfigured ring can cause broadcast storms. Verify your topology in a lab first.
• The switch draws substantial current during startup (cold inrush). If your DC supply is marginal or at the edge of its rating, verify the amperage headroom before installation.

Deploy this model in hardened outdoor camera networks, vehicle-mounted surveillance systems, and industrial sites where cold or vibration would kill a standard commercial switch. The CNGE11FX3TX8MSK justifies its cost the moment you avoid a site revisit due to weather-related switch failure.