Cisco Catalyst 9000 Series: C9300-48UN-A – High-Density Multi-Gigabit Access Switch

Jun 12 , 2025 7

Cisco Catalyst 9000 Series: C9300-48UN-A – High-Density Multi-Gigabit Access Switch

Product Overview
The Cisco C9300-48UN-A is a 1RU fixed-configuration switch designed for modern enterprise networks requiring flexible multi-gigabit connectivity. As part of Cisco's flagship Catalyst 9000 series, this switch delivers exceptional port density with a combination of multi-gigabit copper ports and high-speed fiber uplinks, making it ideal for bandwidth-intensive applications and IoT deployments.

Key Features & Specifications

• Port Configuration:

• 48x 100M/1G/2.5G/5G/10GBASE-T RJ45 ports (Network Unlimited variant)

• 4x 1G/10G SFP+ uplink ports

• 2x 1G/10G management ports

• Performance Specifications:

• Switching capacity: 176Gbps (full duplex)

• Forwarding rate: 131Mpps

• Latency: <3μs (cut-through mode)

• Advanced Capabilities:

• Cisco StackWise-480 technology

• DNA Center integration

• Cisco TrustSec security with MACsec encryption

• EnergyWise power management

• Flexible NetFlow with hardware acceleration

• Power Options:

• 715W AC power supply (standard)

• Optional PoE+ (380W) model available

Use Cases
✔ Enterprise Campus: High-density workstation connectivity
✔ Digital Workspaces: Bandwidth-intensive collaboration systems
✔ Healthcare Networks: Medical imaging and connected devices
✔ Education Campuses: Next-generation classroom technology
✔ Retail Environments: Digital signage and interactive displays

Next-Generation Successor: C9400-48UN-B (Projected 2025 Release)

Evolutionary Improvements

Strategic Advantages of Next-Gen Model

1. Multi-Gigabit Evolution: Native 5G/10G/25G BASE-T support

2. AI-Powered Operations: Predictive network analytics

3. Enhanced Security: Hardware-accelerated encryption

4. Sustainable Design: 30% lower power consumption

5. Future-Ready Architecture: 25G/100G capable uplink ports

Migration Recommendations

1. Current Deployments: C9300-48UN-A remains optimal for 10G environments

2. Future Planning: C9400-48UN-B for upcoming multi-gigabit needs

3. Performance Needs: Prioritize upgrade for bandwidth-intensive applications

4. Feature Adoption: Gradually implement AI operations capabilities

5. Power Planning: Account for increased power requirements

Conclusion
While the C9300-48UN-A continues to serve current multi-gigabit networking needs effectively, the C9400-48UN-B represents the future of enterprise access switching with:

• 2.5x greater port speeds

• AI-driven network operations

• Enhanced security posture

• Significant energy savings

• Future-ready architecture

Alternative Title Options

1. "Cisco's Multi-Gig Evolution: From 10G to 25G Connectivity"

2. "The Future of Enterprise Access: Cisco's C9300 Successor"

3. "AI-Ready Campus Switching: Next-Gen Multi-Gig Portfolio"

4. "Sustainable High-Density Networking: Cisco's Path to 400Gbps"