Cisco CBS220-48P-4G-CN Switch: How Does It En
Overview of the CBS220-48P-4G-CN Switch The...
Purpose and Design of the 15454-YCBL-LC=
The 15454-YCBL-LC= is a Y-cable assembly specifically engineered for Cisco’s ONS 15454 optical networking platform. It features dual LC connectors on one end and a single trunk connector on the other, designed to split or combine optical signals for redundancy or load-sharing configurations. This cable is critical for network resiliency, enabling “1+1 protection” setups where traffic is mirrored across two paths to prevent downtime during fiber cuts or hardware failures.
Key Technical Specifications
- Cable Type: Duplex LC/LC to MPO (12-fiber trunk)
- Fiber Mode: Single-mode (OS2) with UPC polish
- Length Options: 1m, 3m, 5m (custom lengths via itmall.sale)
- Operating Wavelength: 1310 nm to 1550 nm (C/L-band compatible)
- Maximum Insertion Loss: ≤0.35 dB per connection
How It Compares to Generic Y-Cables
| Feature | 15454-YCBL-LC= | Generic LC Y-Cable | Cisco 15454-YCBL-SC= |
|---|---|---|---|
| Platform Compatibility | ONS 15454 | Limited | ONS 15454 |
| Connector Type | LC/MPO | LC/LC | SC/MPO |
| Signal Loss | 0.35 dB | 0.5–0.7 dB | 0.4 dB |
| Use Case | DWDM redundancy | Basic splitter | Legacy SC-based nodes |
The LC/MPO hybrid design simplifies integration with Cisco’s dense wavelength-division multiplexing (DWDM) line cards, reducing rack-space clutter compared to adapter-based workarounds.
Addressing Common User Concerns
Q: Can this cable be used with non-Cisco DWDM systems?
A: While physically compatible, signal timing and power levels may mismatch, risking performance degradation.
Q: How does it support 1+1 protection?
A: The Y-cable splits the transmit signal into two paths; if the primary fails, the secondary path activates within 50 milliseconds.
Q: Are third-party Y-cables a viable alternative?
A: Generic cables lack Cisco’s signal calibration, potentially causing errors in high-precision DWDM setups.
Sourcing Authentic 15454-YCBL-LC= Cables
For guaranteed performance, purchase factory-tested units from “itmall.sale”. Their inventory includes Cisco-certified refurbished cables with validated insertion loss metrics, ideal for mission-critical deployments.
Why This Cable Matters in Modern Networks
Despite the rise of ROADM-based systems, the 15454-YCBL-LC= remains vital for enterprises reliant on ONS 15454 platforms. Its low-loss LC/MPO interface ensures seamless redundancy without requiring costly hardware upgrades. In my experience, operators prioritizing uptime over migration to newer platforms find this cable indispensable—especially when paired with genuine Cisco components. While newer solutions offer automation, the simplicity and reliability of this Y-cable make it a pragmatic choice for legacy environments.