Cisco Nexus 9000 Series: N9K-C9236C – High-Performance Cloud-Scale Switch

Jun 12 , 2025 10

Cisco Nexus 9000 Series: N9K-C9236C – High-Performance Cloud-Scale Switch

Product Overview
The Cisco N9K-C9236C is a 1RU fixed-configuration switch designed for modern data center deployments requiring high-density 100G connectivity. This cloud-scale switch delivers exceptional performance for hyperscale, enterprise, and service provider environments with its optimized balance of port density, throughput, and power efficiency.

Key Features & Specifications

• Port Configuration:

• 36x 100G QSFP28 ports (1:4 breakout to 144x 25G)

• 2x 1G/10G management ports

• Performance Specifications:

• Switching capacity: 7.2Tbps (full duplex)

• Forwarding rate: 5.4B packets per second

• Latency: <800ns (cut-through mode)

• Advanced Capabilities:

• Cisco Cloud Scale ASIC technology

• Hardware-accelerated VXLAN/EVPN

• Precision timing (SyncE, 1588v2)

• In-band network telemetry (INT)

• Programmable pipeline with P4 runtime support

Use Cases
✔ Hyperscale Data Centers: Spine/leaf deployments
✔ AI/ML Clusters: High-performance computing fabrics
✔ Cloud Service Providers: Multi-tenant infrastructure
✔ Storage Networks: NVMe-over-Fabrics (NVMe-oF)
✔ 5G Core Networks: High-capacity packet processing

Next-Generation Successor: N9K-C9348D (Projected 2025 Release)

Evolutionary Improvements

Strategic Advantages of Next-Gen Model

1. 400G Native Support: QSFP-DD interfaces for next-gen optics

2. AI-Optimized Fabric: Hardware support for collective communications

3. Quantum-Safe Security: Lattice-based cryptography acceleration

4. Deterministic Networking: <500ns latency guaranteed

5. Sustainable Design: 40% lower carbon footprint per petabit

Migration Recommendations

1. Current Deployments: N9K-C9236C remains ideal for 100G environments

2. Future Planning: N9K-C9348D for upcoming 400G requirements

3. Performance-Sensitive Apps: Prioritize upgrade for AI/ML workloads

4. Hybrid Environments: Seamless interoperability between models

5. Sustainability Goals: Leverage new model's energy efficiency

Conclusion
The N9K-C9236C delivers exceptional performance for current cloud networking needs, while the N9K-C9348D represents Cisco's vision for next-generation data centers with:

• Native 400G connectivity

• AI-optimized architecture

• Unprecedented power efficiency

• Future-proof security

• Carrier-class reliability

Alternative Title Options

1. "Cisco's Cloud Networking Evolution: From 100G to 400G"

2. "The Future of Data Center Switching: Cisco's 400G Breakthrough"

3. "AI-Ready Networking: Cisco's Next-Gen Cloud-Scale Portfolio"

4. "Sustainable Hyperscale Switching: Cisco's Path to 19.2Tbps"