​​Function and Design Overview​​

The ​​CBL-R3BS3-C240M6L=​​ is a Cisco-specific single-mode fiber (SMF) cable tailored for long-haul, high-bandwidth applications in enterprise and data center networks. With a ​​240-meter length​​ and OS2 fiber construction, it supports ultra-low latency and high-speed data transfer over extended distances, making it ideal for mission-critical infrastructures.


​​Core Technical Specifications​​

  • ​​Cable Type:​​ OS2 single-mode fiber (1310nm/1550nm wavelengths).
  • ​​Length:​​ 240 meters (optimized for cross-building or campus links).
  • ​​Connectors:​​ Duplex LC/LC termination for compatibility with Cisco transceivers.
  • ​​Data Rates:​​ Supports 10G/25G/100G Ethernet and 16G/32G Fibre Channel.
  • ​​Compliance:​​ Cisco MDS 9000, Nexus 5600/9300, and UCS Director ecosystem.

​​Primary Deployment Scenarios​​

  • ​​Campus Network Backbones:​​ Connects distributed buildings with low signal attenuation.
  • ​​Cloud Storage Replication:​​ Enables synchronous data mirroring between geographically separate data centers.
  • ​​Media Streaming Hubs:​​ Reduces latency for high-volume content delivery networks (CDNs).

​​Critical Compatibility Checks​​

Before deploying the CBL-R3BS3-C240M6L=:

  • ​​Switch Validation:​​ Confirm compatibility with Cisco Nexus 9336C-FX2 or MDS 9148T switches.
  • ​​Transceiver Pairing:​​ Use Cisco SFP-10G-LR or QSFP-100G-LR4 modules to avoid protocol mismatches.
  • ​​Firmware Requirements:​​ Ensure switches run NX-OS 7.0(3)I7(1) or later for 100G support.

​​Addressing Common User Questions​​

​​Q:​​ Can this cable be used for mixed Fibre Channel and Ethernet traffic?
​​A:​​ ​​No​​—it supports ​​either​​ protocol based on the transceiver configuration (e.g., Fibre Channel SFP+ vs. Ethernet QSFP28).

​​Q:​​ Is the 240-meter length sufficient for metro-area connectivity?
​​A:​​ ​​Depends on the use case.​​ For standalone links, yes. For multi-kilometer metro setups, consider DWDM/CWDM solutions.

​​Q:​​ Does it require special grounding or shielding?
​​A:​​ ​​No​​—OS2 fiber is immune to EMI, unlike copper cables, making it ideal for electrically noisy environments.


​​Why Purchase from itmall.sale?​​

Third-party cables often lack precision polishing or Cisco’s attenuation tolerances, risking signal loss at 100G speeds. For guaranteed performance, source the ​​CBL-R3BS3-C240M6L=​​ from [“CBL-R3BS3-C240M6L=” link to (https://itmall.sale/product-category/cisco/), which offers Cisco-certified cables with end-to-end testing.


​​Performance Comparison: Cisco vs. Generic SMF Cables​​

​​Criteria​​ ​​CBL-R3BS3-C240M6L=​​ ​​Unbranded OS2 Cable​​
Attenuation at 1550nm ≤0.22 dB/km ≤0.35 dB/km (typical)
Cisco TAC Support Full None
Bend Radius Handling Tight (10mm) Relaxed (15mm+ risk)

​​Engineer’s Perspective: Balancing Cost and Performance​​

In high-stakes networks, compromising on cable quality is like using a frayed lifeline—it works until it doesn’t. The CBL-R3BS3-C240M6L= might carry a premium over generic SMF cables, but its engineering precision ensures predictable performance under load. For enterprises scaling AI/ML or real-time analytics, “good enough” isn’t an option—certified reliability is the only path forward.

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