A9K-4X100GE-TR vs A9K-MOD400-TR: A Comprehensive Technical Breakdown

When upgrading network infrastructure, choosing the right hardware is crucial for performance, scalability, and cost efficiency. The Cisco A9K-4X100GE-TR and A9K-MOD400-TR are both high-performance modules designed for modern data centers, but they cater to different networking demands. This comparison examines their technical specifications, design, usability, and pricing to help you decide which one fits your needs.

Performance Comparison

Key Takeaways:

• Both modules offer 400G throughput, but the A9K-MOD400-TR has more memory and storage.

• The A9K-4X100GE-TR is more power-efficient, making it better for environments where energy costs matter.

• The A9K-MOD400-TR is slightly more expensive but provides better scalability for future upgrades.

Feature Analysis

1. Design & Build Quality

• A9K-4X100GE-TR: Optimized for 100G deployments with a compact, power-efficient design.

• A9K-MOD400-TR: Built for high-density 400G-ready networks, featuring enhanced cooling for sustained performance.

2. User Experience

• A9K-4X100GE-TR: Easier to integrate into existing 100G networks with straightforward configuration.

• A9K-MOD400-TR: Requires more advanced setup but supports higher traffic loads and future 400G upgrades.

3. Power Efficiency & Heat Management

• The A9K-4X100GE-TR consumes 180W, making it more energy-efficient than the A9K-MOD400-TR (250W).

• The A9K-MOD400-TR needs better airflow and cooling due to its higher power draw.

4. Compatibility & Expandability

• Both support Cisco IOS XR, but the A9K-MOD400-TR is designed for next-gen 400G deployments.

• The A9K-4X100GE-TR is ideal for current 100G networks without immediate 400G requirements.

5. Software & Firmware Support

• Both receive regular Cisco updates, ensuring security and performance optimizations.

• The A9K-MOD400-TR includes advanced traffic shaping for large-scale data centers.

Final Recommendation

• Choose A9K-4X100GE-TR if you need a cost-effective, power-efficient 100G solution with solid performance.

• Opt for A9K-MOD400-TR if you require higher memory, storage, and future-proof 400G scalability.

Your decision should depend on whether you prioritize current efficiency (A9K-4X100GE-TR) or future readiness (A9K-MOD400-TR). Both are excellent choices, but their best use cases differ.