What Is the CBL-SDSAS-C240M7= and How Does It
Technical Overview of the CBL-SDSAS-C240M7= The C...
Core Role in Cisco Catalyst Infrastructure
The CN93240YC-FX2 is a 40-port 25G Ethernet line card designed for the Cisco Catalyst 9500 Series switches. It supports mixed-speed connectivity (25G/10G/1G) via SFP28 ports, making it ideal for modernizing enterprise access layers or supporting bandwidth-hungry applications like video surveillance networks and mid-scale virtualization clusters.
Technical Highlights and Operational Advantages
- Port Flexibility: Each port auto-negotiates between 1G, 10G, and 25G speeds, allowing phased upgrades from legacy Gigabit infrastructure.
- Buffer Optimization: 9 MB shared packet buffer per ASIC prevents drops during microbursts common in IoT-heavy environments.
- Energy Efficiency: Consumes 18% less power per port than the earlier FX1 model under equivalent loads.
CN93240YC-FX2 vs. CN93240YC-FX3: Balancing Cost and Capability
| Feature | CN93240YC-FX2 | CN93240YC-FX3 |
|---|---|---|
| Max Speed per Port | 25G | 25G |
| Buffer Depth | 9 MB | 12 MB |
| MACsec Encryption | AES-128 | AES-256 |
While both cards share the same port density, the FX3 variant suits high-security or latency-sensitive workloads (e.g., healthcare IoT), whereas the FX2 offers a cost-effective path for general-purpose 25G adoption.
Addressing Common Deployment Questions
Q: Is this line card backward-compatible with Catalyst 9400 chassis?
A: No—the CN93240YC-FX2 requires the Catalyst 9500’s UADP 3.0 ASIC for performance guarantees.
Q: How to ensure genuine hardware procurement?
A: Source from trusted partners like [“CN93240YC-FX2” link to (https://itmall.sale/product-category/cisco/) to avoid counterfeit risks.
Strategic Insights for Network Teams
The FX2’s auto-sensing ports are its standout feature, enabling hybrid environments where legacy 1G devices coexist with 25G-capable endpoints. However, teams should audit existing SFP+ transceivers—older 10G modules may not support 25G negotiation, creating unforeseen upgrade costs.
The Practical Verdict: When “Good Enough” Is Optimal
The CN93240YC-FX2 isn’t the most advanced 25G card in Cisco’s arsenal, but its balance of price and adaptability makes it a pragmatic choice for organizations prioritizing incremental modernization. In budget-constrained scenarios, deploying this card in access layers while reserving FX3 models for core tiers often yields the best TCO over 3–5 years.