Description
Product Description
The ENTERASYS C2RPS-CHAS2 is a redundant power supply chassis designed to provide highly reliable, fault-tolerant power to critical network and industrial communication equipment, such as Enterasys (now Extreme Networks) layer 2/3 switches and routers. This chassis, the ENTERASYS C2RPS-CHAS2, is engineered to house two hot-swappable AC or DC power supply modules in a 1+1 redundant configuration. Its primary function is to eliminate a single point of failure in the power subsystem, ensuring continuous network operation even if one power supply fails or during maintenance. The robust design of the ENTERASYS C2RPS-CHAS2 is crucial for maintaining network integrity in industrial automation environments where uptime is paramount.
Product Parameters
The technical specifications for the ENTERASYS C2RPS-CHAS2 redundant power chassis are defined for high availability:
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Chassis Type: Redundant Power Supply Chassis (RPS).
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Form Factor: Standalone chassis designed to mount in a standard 19-inch rack.
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Power Supply Slots: Houses two (2) hot-swappable power supply module slots.
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Input Power: Accepts specific Enterasys power supply modules (e.g., C2PS-AC, C2PS-DC48) which define the input voltage (100-240V AC, -48V DC).
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Output to Switch: Delivers redundant DC power to a connected compatible switch via a dedicated, thick-gauge power cable.
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Management: May include status LEDs for each power supply (OK/FAIL) and overall chassis health.
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Cooling: Contains internal fans for cooling the power supply modules.
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Compatibility: Designed to work with specific Enterasys C2/C3 family modular switches (e.g., C2Gxx series, C3Gxx series) when those switches are configured for external redundant power.
Advantages and Features
The ENTERASYS C2RPS-CHAS2 offers critical benefits for network resilience:
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True Power Supply Redundancy: The 1+1 configuration of the ENTERASYS C2RPS-CHAS2 provides true N+1 redundancy. If one power supply fails, the other immediately takes over the entire load without any interruption to the connected switch.
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Enhanced System Uptime: By eliminating the power supply as a single point of failure, it dramatically increases the overall availability of the network infrastructure, which is critical for SCADA, control networks, and real-time communication.
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Hot-Swappable Maintenance: Power supply modules can be safely removed and replaced while the chassis and the connected switch remain fully operational, enabling proactive maintenance without scheduling network downtime.
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Flexible Power Input: By choosing the appropriate AC or DC power supply modules, the C2RPS-CHAS2 can be deployed in a variety of electrical environments, including telecom central offices that use -48V DC.
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Scalable Power Capacity: The chassis is designed to deliver sufficient combined power to support fully loaded, high-performance modular switches.
Application Cases in Industry
This redundant power system is deployed in network cores where failure is not an option:
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Manufacturing Plant Network Core: Provides redundant power to the backbone switch connecting production cells, control rooms, and data centers within an automotive or discrete manufacturing facility.
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Oil & Gas Control Network: Ensures continuous operation of the core switch managing the network between offshore platforms, pipeline SCADA systems, and central control facilities.
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Power Generation (Plant DCS Network): Used to power the core Ethernet switch that carries traffic between distributed control system (DCS) nodes, engineering stations, and historian servers.
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Water/Wastewater Treatment SCADA: Protects the main network switch that aggregates data from remote PLC sites across a wide geographic area for central monitoring and control.
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Transportation (Rail/Airport): Provides fault-tolerant power for critical network switches managing operational communications, security, and baggage handling systems.
Comparisons with Competing Products
When compared to using switches with internal, non-redundant power supplies or other vendor RPS solutions, the ENTERASYS C2RPS-CHAS2 offers specific advantages:
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Dedicated, Scalable Redundancy vs. Internal PSUs: Unlike switches with fixed internal power supplies, the ENTERASYS C2RPS-CHAS2 provides a dedicated, high-capacity redundancy platform that can support multiple high-power switches and is not limited by the switch’s internal chassis size.
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Vendor-Optimized Compatibility: It is specifically engineered for Enterasys C2/C3 switches, ensuring perfect electrical compatibility, communication for status monitoring, and mechanical fit, which is not guaranteed with third-party universal RPS units.
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Superior Fault Isolation: In a fully redundant setup, a fault in the RPS or one PSU does not affect the switch. With internal dual PSUs, a catastrophic failure in one can sometimes damage the shared switch motherboard.
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Centralized Power Management: For a rack with multiple compatible switches, a single C2RPS-CHAS2 chassis can provide centralized, redundant power for several devices, simplifying power distribution and management.
Selection Suggestions and Precautions
Proper selection and installation are key to achieving the desired redundancy:
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Verify Switch Compatibility: This is paramount. Confirm that your specific Enterasys switch model (e.g., C2G124-48, C3G124-24P) is listed as compatible with the ENTERASYS C2RPS-CHAS2 chassis. Not all C2/C3 switches support external RPS.
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Select the Correct Power Supply Modules: The chassis is empty. You must purchase the appropriate AC (C2PS-AC) or DC (C2PS-DC48) power supply modules separately and install both for redundancy.
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Source Power from Independent Circuits: For true redundancy, the two power supply modules should be connected to two separate, independent branch electrical circuits. Connecting both to the same circuit defeats the purpose if that circuit fails.
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Use the Official Power Cable: Always use the thick, dedicated power cable provided by Enterasys to connect the RPS chassis to the switch. This cable is designed to carry the required current safely.
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Monitor Status LEDs: Regularly check the status LEDs on the C2RPS-CHAS2 chassis and the switch’s management interface to ensure both power supplies are operational and sharing load correctly.
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