C9300-48U-10A: How Does This Cisco Switch Opt
Core Capabilities of the Cisco C9300-48U-10A�...
Hardware Overview and Key Specifications
The Cisco N9K-C93108TC-FX3H is a 1RU fixed-configuration switch designed for spine-leaf architectures in modern data centers. Part of the Nexus 9300-FX3 series, it features 48x10GBASE-T PoE+ ports (ports 1-48) and 6×40/100G QSFP28 uplinks (ports 49-54), making it ideal for hybrid environments requiring both copper access and high-speed fiber backbones. Unique to the FX3H variant is its port-side intake airflow configuration, indicated by burgundy-colored fan modules that optimize cooling in reversed airflow racks.
Key performance metrics include:
- 2.16 Tbps system bandwidth with 1.25 billion packets per second forwarding capacity
- 24GB DRAM and 128GB SSD for containerized services
- Dual 715W-1900W power supplies supporting -48V DC to 277V AC inputs
Critical Use Cases and Operational Advantages
-
Unified IoT and HD Video Deployments
The 10GBASE-T ports deliver Power over Ethernet+ (up to 30W per port) for IP cameras and wireless APs, while 100G uplinks handle 4K video backhaul with <5μs latency. -
ACI-Mode Data Center Fabrics
When running Application Centric Infrastructure (ACI) firmware, the switch supports automated policy enforcement across virtual/physical workloads through Cisco APIC integration. -
Hybrid Cloud Edge Nodes
The QSFP28 ports enable MACsec-256 encrypted connections to AWS/Azure through 100G Direct Connect/ExpressRoute links, while local compute connects via 10G copper.
Technical Challenges and Mitigation Strategies
Q: Why do some RJ45 ports fail after reboots?
A firmware defect (CSCwh81430) in earlier NX-OS versions caused PHY initialization failures on ports 1-48. The fix requires upgrading to NX-OS 9.3(5) or later, which implements enhanced PHY diagnostics during boot sequences.
Q: How to optimize airflow in mixed-direction racks?
The FX3H’s port-side intake design requires:
- Blank panels in unused rack spaces to prevent hot air recirculation
- 2-inch rear clearance for proper exhaust ventilation
- Ambient temperature monitoring below 35°C
Licensing and Feature Activation
The base switch requires Cisco ACI Essentials or NX-OS Enterprise License to unlock:
- VXLAN EVPN control plane
- Tetration analytics integration
- Crosswork Network Controller compatibility
For organizations transitioning from standalone NX-OS to ACI, the Cisco Migration Engine automates policy conversion but requires thorough validation of QoS profiles.
Procurement Considerations
Pricing fluctuates between 39,000−39,000-39,000−55,300 depending on optics and power supply configurations. The “N9K-C93108TC-FX3H” is available through authorized channels here, with lead times averaging 4-6 weeks for customized airflow/power combinations.
Lessons From Real-World Deployments
In a 2024 smart city project, three FX3H switches improperly configured with mixed airflow fans caused thermal shutdowns during summer peaks – a $47k lesson in consistency. Conversely, a logistics company leveraged its PoE+ ports to consolidate separate power injectors and switches, achieving 28% OpEx savings. This switch thrives in environments where flexibility and power efficiency collide, but demands meticulous airflow planning. Those treating it as a “simple access switch” risk cascading failures, while teams embracing its programmability unlock hybrid infrastructure potential.