Cisco C9300-96S-BUN: Why Is It Built for Ultr
Technical Profile and Core Design The ...
Hardware Overview: Architecture and Functional Role
The Cisco N560-7-E is a 7-port 10 Gigabit Ethernet line card designed for the Nexus 5600 Series switches, specifically the Nexus 56128 and 5632 chassis. It targets environments requiring low-latency, high-throughput connectivity for virtualization and storage workloads. Key design elements:
- 7x SFP+ ports: Supports 10GbE optical/copper transceivers and DAC cables.
- Unified Ports: Configurable for FCoE (Fibre Channel over Ethernet) or standard Ethernet, enabling converged SAN/LAN traffic.
- Cisco Cloud Scale ASIC: Delivers line-rate throughput with deep buffering (18MB) to handle microbursts in hyperconverged clusters.
The card integrates with Cisco’s Unified Fabric architecture, allowing seamless communication between UCS servers and MDS storage systems.
Performance Benchmarks: Latency, Throughput, and Scalability
Q: Can this line card sustain performance under full FCoE load?
A: Yes. The N560-7-E achieves 1.2 million IOPS at 10GbE with <2μs port-to-port latency for 64B packets.
Key Metrics:
- Switching Capacity: 70 Gbps per slot (non-blocking).
- MAC Address Scale: 128,000 entries with 16-way ECMP.
- Power Efficiency: 0.15W per Gbps under 80% load (ASHRAE A3 compliant).
Use Cases: Where the N560-7-E Excels
- Virtualized Data Centers: Aggregates vMotion/VM traffic across VMware or Hyper-V clusters.
- Unified Storage Fabrics: Consolidates iSCSI and FCoE traffic on a single switch, reducing cabling by 40%.
- High-Frequency Trading (HFT): Guarantees deterministic latency for algorithmic trading platforms.
Comparative Analysis: N560-7-E vs. N560-4-E
| Feature | N560-7-E | N560-4-E |
|---|---|---|
| Port Density | 7x 10GbE | 4x 10GbE |
| Buffer Memory | 18MB | 12MB |
| FCoE Support | Yes (with DCB) | No |
| Target Workload | Mixed SAN/LAN | Dedicated Ethernet |
Licensing and Software Compatibility
The card operates on Cisco NX-OS 7.3(1)N1(1) or later, requiring:
- LAN Enterprise License: For advanced QoS, ACLs, and VXLAN.
- SAN License Add-On: Enables FCoE, NPV, and FC zoning.
Critical Note: Firmware upgrades require Cisco Prime DCNM for dependency checks when enabling FCoE.
Troubleshooting Common Deployment Issues
Q: Why do FCoE ports fail to initialize after configuration?
A: Ensure DCB (Data Center Bridging) is enabled globally and per-port:
feature dcb
interface ethernet 1/1
dcb ethernet
dcb priority-flow-control mode on Q: How to resolve CRC errors on 10GbE DAC links?
A: Replace third-party cables with Cisco-certified SFP-H10GB-CU3M DACs and disable auto-negotiation:
interface ethernet 1/1
speed 10000
no auto-negotiate Procurement Insights: Avoiding Counterfeits
The N560-7-E is frequently counterfeited due to its end-of-life status. For verified units, purchase from “N560-7-E” at itmall.sale, which provides Cisco’s 1-year hardware warranty. Validate authenticity via Cisco’s Serial Number Checker before deployment.
Why Legacy Hardware Still Powers Critical Infrastructures
Having deployed N560-7-E cards in three healthcare data centers, I’ve observed a trend: while newer switches tout hyperscale capabilities, this card’s predictable performance and FCoE maturity make it irreplaceable for legacy PACS imaging systems. In industries where regulatory compliance trumps innovation, the N560-7-E bridges the gap between aging infrastructure and modern workloads—proving that “outdated” hardware often becomes the backbone of risk-averse enterprises. Until every application is cloud-native, purpose-built solutions like this will remain indispensable.