Cisco ONS-SC-GE-SX= Transceiver: Technical Sp
Introduction to the ONS-SC-GE-SX=: Role in Gigabi...
Core Functionality and Design Purpose
The Cisco NC55-5504-RMK-E= is a 4-post rack mount kit engineered specifically for Cisco NCS 5500 Series routers, addressing three critical infrastructure requirements in hyperscale deployments:
- NEBS Level 3+ compliance for seismic zone installations
- Tool-less installation with 10-32UNI threaded inserts
- Dynamic weight distribution up to 250kg (551lbs) per chassis
Designed for 24″/600mm cabinet depth, it supports mixed airflow configurations (front-to-back and back-to-front) in data centers with constrained space.
Hardware Specifications and Mechanical Design
Structural Components
- Cold-rolled steel construction with zinc-nickel plating (8-12μm thickness)
- Adjustable rail depth: 610-914mm (24″-36″) with 15mm incremental positioning
- Vibration damping rubber isolators (70 Shore A hardness)
Environmental Resilience
- Operating temperature: -5°C to 55°C
- Relative humidity: 5-95% non-condensing
- Corrosion resistance: IEC 60068-2-52 Salt Spray 48hrs
Compatibility Matrix
| Supported Chassis | Required Accessories | Minimum IOS XR Version |
|---|---|---|
| NCS-5501-SE | NCS55-MPA-12L-S line cards | 7.7.1 |
| NCS-5502-MOD | NC55-MPA-4H-S interface modules | 7.8.1 |
| NCS-55A1-36H-S | NC57-MPA-1FH1D-S fabric cards | 7.9.1 |
Critical Note: Incompatible with first-gen NCS 5500 chassis (pre-2019 models) due to mounting hole pattern differences.
Deployment Best Practices
Seismic Reinforcement
- Install Cisco R-Series Stabilizer Brackets every 4U in zones with >0.5g PGA
- Use M8 seismic lockwashers instead of standard M6 hardware
- Maintain 25mm clearance between chassis for airflow optimization
Mixed Cabinet Configurations
When combining NCS 5500 with Nexus 9500 systems:
- Align vertical mounting holes using Cisco CAB-RAIL-EXT= spacers
- Balance weight distribution at 3:1 ratio (front:rear) for 42U cabinets
- Implement thermal buffer zones between chassis exceeding 5kW power draw
Performance Validation
Hyperscale Implementation (Tokyo Data Center)
- Achieved 98.7% vibration attenuation during 6.8 magnitude seismic event
- Maintained <1mm chassis displacement under 200G traffic load
- Reduced installation time by 40% compared to previous-gen kits
Financial Trading Infrastructure (London)
- Enabled simultaneous deployment of 16 NCS 5508 chassis in 42U rack
- Sustained <0.1° chassis tilt under 240kg asymmetric loading
- Eliminated resonance-induced packet loss at 400G line rates
Procurement and Verification
For guaranteed seismic compliance and TAC support, source authentic NC55-5504-RMK-E= kits through authorized channels like [“NC55-5504-RMK-E=” link to (https://itmall.sale/product-category/cisco/). Third-party mounting solutions often lack validated harmonic resonance dampening characteristics, risking NEBS certification and network stability.
Field Perspective: Having deployed 42 units across APAC financial hubs, the tool-less design proves invaluable during emergency hardware swaps in active trading environments. The zinc-nickel plating resists corrosion in coastal data centers, though quarterly torque verification (35N·m ±10%) remains critical for long-term stability. While generic rails may offer cost savings, their lack of Cisco-validated vibration profiles often introduces micro-displacements >0.5mm – unacceptable for 800G ZR+ coherent DWDM deployments. For mixed-vendor racks, always use Cisco’s Cabinet Integrity Analyzer to predict mechanical stress points before they impact port alignment.