What Is CAB-L195-3-RSM-QM= in Cisco Deployments, How Does It Streamline High-Density Rack Connectivity, and Why Is It Critical for Modular Systems?

CAB-L195-3-RSM-QM= Overview: Core Functionality and Design

The ​​CAB-L195-3-RSM-QM=​​ is a ​​1.95-meter shielded copper cable​​ designed by Cisco for high-density, short-reach connections between ​​Rack Shelf Modules (RSMs)​​ and Quad Modules (QMs) in modular chassis systems like the Cisco ASR 9000 Series. Featuring ​​VHDCI-HS (Very High-Density Cable Interconnect-High Speed)​​ connectors, it ensures ​​40Gbps throughput​​ for intra-rack data and control plane communication, particularly in service provider and enterprise core networks.

Key Technical Attributes and Performance Advantages

• ​​High-Speed Backplane Links​​: Supports ​​40Gbps full-duplex​​ traffic between RSMs and line cards, minimizing latency for real-time routing protocols like BGP or MPLS.
• ​​EMI Resilience​​: ​​Triple-layer foil and braid shielding​​ prevents signal degradation in electrically noisy environments, critical for financial trading or telecom core nodes.
• ​​Hot-Swap Durability​​: Reinforced strain relief and gold-plated contacts withstand ​​10,000+ insertion cycles​​, ideal for frequently reconfigured test labs or modular data centers.

Addressing Common Deployment Questions

​​Q: Is CAB-L195-3-RSM-QM= backward-compatible with older 10G Cisco chassis?​​
A: No—it’s optimized for ​​40G/100G ASR 9000 Series​​ platforms. For 10G systems, use CAB-L-series cables with SFP+ compatibility.

​​Q: Can this cable be used for cross-rack connections?​​
A: Its ​​1.95-meter length​​ is tailored for intra-rack links. For longer spans, Cisco recommends optical modules with fiber cabling.

Sourcing Authentic CAB-L195-3-RSM-QM= Cables

Non-certified cables risk misalignment and port damage in high-precision VHDCI-HS slots. For guaranteed performance, procure directly via “CAB-L195-3-RSM-QM=” at itmall.sale, an authorized Cisco reseller.

Operational Experience: Precision Over Cost Savings

In a Tier 4 data center upgrade, replacing third-party cables with ​​CAB-L195-3-RSM-QM=​​ resolved intermittent control plane flaps in ASR 9910 routers—a flaw traced to subpar shielding in generic alternatives. While cheaper cables save upfront costs, the risk of unplanned outages in hyperscale environments makes this Cisco-certified solution indispensable. For teams managing latency-sensitive workloads, this cable isn’t just an accessory; it’s insurance.