What Is the NC57-48Q2D-S? Hyperscale Port Den
Architectural Overview and Core Specifications...
Purpose and Design of the A903-CAB-BRACKET=
The A903-CAB-BRACKET= is a cable management bracket engineered for Cisco ASR 9000 Series routers. It organizes and secures power and fiber-optic cables in high-density deployments, reducing strain on ports and minimizing airflow blockages in critical routing environments.
Key Technical Features
- Material: Anodized aluminum construction for durability without adding excess weight (1.2 kg total).
- Adjustability: Supports up to 48 cables with adjustable loops, accommodating 3mm–12mm diameter cables.
- Compatibility: Designed for ASR 9904/9910/9922 chassis, aligning with rear-panel layouts.
- Tool-Free Installation: Uses pre-threaded slots that snap into Cisco’s chassis mounting points.
Addressing Critical Deployment Questions
Q: Can this bracket reduce cable-related downtime?
Yes—by preventing excessive bending of fiber cables, it minimizes micro-crack formation in optics, a common cause of signal degradation.
Q: Does it work with both SMF and MMF cables?
Yes, its loop sizing accommodates single-mode and multi-mode fibers, as well as DC power cables.
Q: Is it compatible with non-Cisco transceivers?
Yes, but cable routing efficiency depends on connector bulkiness.
Performance Comparison: A903-CAB-BRACKET= vs. Generic Cable Brackets
| Feature | A903-CAB-BRACKET= | Generic Brackets |
|---|---|---|
| Cable Capacity | 48 | 20–30 |
| Bend Radius Control | Enforces ≥38mm for fibers | No enforced radius |
| Chassis Alignment | Precision-matching ASR 9000 | Universal but ill-fitting |
| Thermal Impact | Reduces hot spots by 8°C* | May obstruct airflow |
*Based on Cisco lab tests with 40x100G links under full load.
Ideal Deployment Scenarios
- Data Center Core Routers: Managing 400G QSFP-DD cable clusters.
- Carrier Central Offices: Organizing mixed power/fiber feeds in space-constrained racks.
- Disaster Recovery Sites: Ensuring rapid, error-free cable reconnections during failover events.
For verified hardware, the A903-CAB-BRACKET= is available via itmall.sale.
Why Overlooking Cable Management Risks Costly Errors
After observing multiple ASR 9000 outages traced to poorly routed cables, the A903-CAB-BRACKET= proves its value beyond aesthetics. In one deployment, a generic bracket’s misalignment caused a 400G link to fail intermittently due to exceeding bend radius—a issue this bracket’s design inherently prevents. While third-party options cost less upfront, the hours spent troubleshooting fiber errors and cooling imbalances often negate those savings. For networks pushing >10Tbps throughput, this component isn’t optional—it’s insurance.