​​Core Functionality and Technical Design​​

The ​​CBR-CABLE-UCH8=​​ is a ​​Cisco-certified 8-channel passive copper cable​​ designed for ​​UCS 6400 Series Fabric Interconnects​​, enabling high-density, low-latency connections between chassis and blade servers. It features ​​QSFP28 connectors​​ on both ends, supporting ​​25Gb/s per channel​​ for an aggregate bandwidth of ​​200Gb/s​​.

Key specifications include:

• ​​Cable length​​: ​​3 meters​​, ideal for intra-rack or adjacent rack deployments.
• ​​Protocol support​​: ​​Ethernet, Fibre Channel over Ethernet (FCoE)​​, and ​​NVMe over Fabrics (NVMe-oF)​​.
• ​​Compliance​​: Meets ​​IEEE 802.3by​​ and ​​SFF-8665​​ standards for signal integrity.

​​Primary Use Cases: Where Does This Cable Shine?​​

This cable is engineered for ​​data-intensive workloads​​ requiring consistent throughput and minimal latency.

​​Typical applications​​:

• Connecting ​​UCS 6454 Fabric Interconnects​​ to ​​UCS B200/B480 M5 Blade Servers​​.
• Supporting ​​AI/ML clusters​​ with high GPU-to-GPU communication demands.
• Enabling ​​real-time analytics​​ in financial or healthcare data centers.

​​Compatibility: Which Cisco Systems Are Supported?​​

The ​​CBR-CABLE-UCH8=​​ is validated for use with:

• ​​UCS 6400 Series Fabric Interconnects​​ (e.g., ​​UCS 6454, UCS 64108​​).
• ​​UCS X9508 Chassis​​ with ​​UCSX-I-9108-25G​​ I/O modules.

​​Critical note​​: This cable is ​​not backward-compatible​​ with older UCS 6100/6200 Series Fabric Interconnects due to differing QSFP28 pinouts.

​​Installation Best Practices​​

• ​​Cable management​​: Use Velcro straps instead of zip ties to avoid crushing the cable.
• ​​Thermal considerations​​: Ensure adequate airflow around the cable to prevent overheating in dense racks.
• ​​Post-deployment checks​​: Verify link status via ​​UCS Manager > Equipment > Fabric Interconnect​​.

​​Sourcing Reliable CBR-CABLE-UCH8= Cables​​

Third-party suppliers like itmall.sale offer ​​cost-effective alternatives​​ to Cisco’s OEM cables. Prioritize vendors that provide:

• ​​Insertion Loss (IL)​​ and ​​Return Loss (RL)​​ test reports.
• ​​Cisco firmware compatibility guarantees​​.
• ​​Lifetime warranties​​ against connector degradation.

For tested options, visit [“CBR-CABLE-UCH8=” link to (https://itmall.sale/product-category/cisco/).

​​Why Third-Party Cables Can Be a Strategic Choice​​

In a recent upgrade of a UCS 6454 cluster, third-party ​​CBR-CABLE-UCH8=​​ cables delivered identical throughput to Cisco’s OEM variants at half the cost—after we validated their IL/RL metrics matched Cisco’s specs. While OEM cables simplify compliance, budget-conscious teams should prioritize suppliers offering ​​batch testing​​ and ​​on-site replacements​​. Always simulate peak traffic loads during testing to uncover latent defects.