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Hardware Design and Functional Purpose The Cisco ...
What Is the Cisco Catalyst C9300-48S-E?
The Cisco Catalyst C9300-48S-E is a 48-port Layer 3 fiber switch designed for high-speed, high-density aggregation and core deployments. It features 48x 1G/10G SFP+ ports and 4x 40G QSFP+ uplinks, optimized for environments requiring low-latency fiber connectivity. The “E” designation includes the Cisco DNA Essentials license, enabling foundational automation, network segmentation, and threat detection.
Key Technical Specifications
- Ports: 48x 1G/10G SFP+ ports + 4x 40G QSFP+ uplinks.
- Stacking: StackWise-480 for 480 Gbps stacking bandwidth across 8 switches.
- Performance: 1.2 Tbps switching capacity and 900 Mpps forwarding rate.
- Software: Cisco IOS XE with DNA Essentials for centralized management via Cisco DNA Center.
- Security: MACsec-256, Cisco TrustSec, and Secure Network Analytics for encrypted traffic visibility.
Primary Use Cases
- Data Center Aggregation: Connects server racks with high-speed 10G/40G links.
- Service Provider Edge: Supports Metro Ethernet and fiber-to-the-premises (FTTP) deployments.
- Campus Core: Aggregates traffic from access switches in large enterprises or universities.
- High-Performance Computing (HPC): Handles data-intensive workloads in research or financial sectors.
C9300-48S-E vs. C9300-48T-E: Critical Differences
| Feature | C9300-48S-E | C9300-48T-E |
|---|---|---|
| Port Type | 48x SFP+ (fiber) | 48x RJ45 (copper) |
| Uplink Speed | 40G QSFP+ | 10G SFP+ |
| Latency | Sub-3 microseconds | ~5 microseconds |
| Typical Deployment | Fiber backbone/core | Copper-based access layer |
Where to Purchase the C9300-48S-E Reliably?
For enterprises seeking Cisco-certified fiber switches, [C9300-48S-E link to (https://itmall.sale/product-category/cisco/) provides genuine hardware with validated SFP+ compatibility. Itmall.sale ensures seamless integration with existing Cisco ecosystems, including licensing and support.
Deployment Considerations
The C9300-48S-E excels in fiber-dominant networks, but its lack of PoE limits it to aggregation roles. In a recent data center upgrade, its 40G uplinks eliminated bottlenecks between storage and compute nodes—though this required pre-terminated fiber cabling, which added complexity. A common oversight: underestimating the cost of SFP+ transceivers. Opt for Cisco-certified modules to avoid link stability issues, even if third-party options seem cheaper. For future scalability, pair it with 100G core switches (e.g., Catalyst 9400) to accommodate bandwidth growth. Always validate airflow direction (front-to-back vs. rear) in rack layouts to prevent overheating in dense configurations.