Full Official English Description – Cisco Catalyst C9300-48UN-A

1. Product Overview

2. Port Hardware Specifications

• Downlink Copper Ports: 48 × IEEE 802.3bz Multigigabit RJ45 ports, auto-negotiable speeds: 100M / 1G / 2.5G / 5G BASE-T
• PoE Standard: Cisco UPOE (IEEE 802.3bt Class 6), maximum 60W DC power output per individual copper port
• Rear Modular Uplink Bay: 1 hot-swappable uplink module slot, compatible with SFP+, SFP28, QSFP+ modules supporting 10G / 25G / 40G fiber uplink expansion
• Stacking Interfaces: Dedicated rear StackWise-480 stacking ports with 480 Gbps bidirectional stacking bandwidth; supports stacking of up to 8 switches into a single logical switching domain
• Management Interfaces:
  1 × RJ45 serial console port, 1 × USB Type-A console port
  1 × 1G out-of-band management Ethernet port
  1 × USB storage port for offline firmware upgrade, log export and configuration backup
• Onboard Memory: 8 GB DRAM, 16 GB flash storage

3. Switching & Forwarding Performance

• Standalone Switching Capacity: 640 Gbps full-duplex
• Standalone Line-Rate Forwarding Rate: 476.19 Mpps
• Aggregated Stack Bandwidth: Up to 1120 Gbps across full stack
• Stack Aggregated Forwarding Rate: 833.33 Mpps
• MAC Address Table Capacity: 32,000 MAC forwarding entries
• IPv4 Routing Table: 32,000 route entries (24,000 direct routes + 8,000 indirect routes)
• IPv6 Routing Table: 16,000 route entries
• Multicast Group Table: 8,000 multicast group entries
• Shared Packet Buffer: 16MB hardware buffer for absorbing bursty wireless and IoT traffic
• Hardware ACL Scale: 5,120 ingress rules + 5,120 egress rules
• Flexible NetFlow Flow Table: 64,000 flow entries
• Jumbo Frame Support: Up to 9198 bytes

4. Power & Thermal Architecture

• Power Supply Support: 1 or 2 hot-swappable Platinum-efficiency AC power supplies with OIR (Online Insertion and Removal); factory default ships with single 1100W AC PSU (PWR-C1-1100WAC-P)
• UPOE Power Budget Scaling:
  Single 1100W PSU: 645W total UPOE power allocation
  Dual 350W secondary PSU: Max 995W PoE capacity
  Dual 715W secondary PSU: Max 1360W PoE capacity
  Dual 1100W secondary PSU: Max 1745W full PoE capacity for full 60W per-port endpoint deployment
• StackPower: Cross-stack power resource pooling in ring topology, dynamic PoE load balancing and N+1 power redundancy across stack members
• Cooling System: 3 field-replaceable variable-speed hot-swap fans with redundant cooling design, low acoustic noise for office rack deployment
• Universal Input Voltage: 100–240V AC, 50/60Hz mains input

5. Stacking & High Availability Technology

• StackWise-480: 480 Gbps high-speed stacking backplane, sub-50ms traffic convergence during stack member hardware failure
• SSO/NSF: Stateful Switchover and Nonstop Forwarding to eliminate service interruption during stack supervisor role failover
• Mixed Stack Compatibility: Fully inter-stackable with all standard Catalyst 9300 Series switches (T/U/UN/H/S fiber/copper models), unified single logical management domain

6. Hardware-Accelerated Enterprise Security (Full Feature Set via Network Advantage)

• MACsec 256-bit AES hardware link encryption supported on all copper downlinks and fiber uplink ports
• Encrypted Traffic Analytics (ETA) for detection of hidden malware within encrypted application flows
• Trustworthy Systems secure boot, runtime integrity verification and digital firmware authenticity validation
• TrustSec SGT group-based microsegmentation for SD-Access fabric policy enforcement
• Endpoint Authentication Suite: IEEE 802.1X, MAB, captive WebAuth multi-factor access control
• Layer 2 Threat Mitigation: Dynamic ARP Inspection (DAI), DHCP Snooping, IP Source Guard, BPDU Guard, broadcast/multicast storm suppression
• Secure Management Transport: SSH, HTTPS, SNMPv3, encrypted NETCONF/YANG streaming telemetry channels

7. Layer 2 & Layer 3 Protocol Support

Layer 2 Full Feature Set

Layer 3 Full Advanced Routing Suite (Unlocked by -A License)

8. Software & Cisco DNA Licensing Ecosystem

• Operating System: Cisco IOS XE universal switch image (17.x release train)
• Preinstalled Perpetual License Tier: Cisco DNA Network Advantage
  Unlocks complete feature portfolio: SD-Access fabric architecture, ETA malware analytics, TrustSec microsegmentation, full BGP/PBR advanced routing, containerized application hosting, ThousandEyes synthetic network monitoring, advanced streaming telemetry and full Layer 3 protocol suite
• Supported Management Interfaces:
  Local CLI via console/SSH, embedded web UI, Cisco Catalyst Center (DNA Center), Cisco Prime Infrastructure, Zero-Touch Provisioning (ZTP)
• Programmability: RESTCONF, NETCONF/YANG streaming telemetry, on-box Python guest shell, container application hosting for local automation workloads

9. Physical & Environmental Specifications

• Form Factor: 1 Rack Unit (1RU) standard 19-inch EIA rack-mount chassis
• External Dimensions: 445 mm (W) × 564 mm (D) × 44 mm (H) / 17.5 × 22.2 × 1.73 inches
• Chassis Weight (single PSU installed): 9.09 kg (20.04 lbs)
• Operating Ambient Temperature: -5°C ~ +45°C
• Storage Temperature: -40°C ~ +70°C
• Operating Humidity: 5% – 90% non-condensing
• Typical MTBF Rating: 198,647 hours under standard factory operating conditions
• Compliance Certifications: UL, CSA, CE, FCC Class A, ICES-003, RoHS, TAA compliant

10. Model Naming Breakdown

• C9300: Base standard Catalyst 9300 stackable enterprise switching platform (StackWise-480, non-X series)
• 48UN: 48-port 5G multigigabit mGig RJ45 chassis with Cisco UPOE (max 60W per port)
• A: Pre-activated Cisco DNA Network Advantage perpetual full-feature license tier

11. Typical Deployment Scenarios

1. Enterprise campus floor access for Wi-Fi 6/6E medium-power wireless APs requiring 5G multigigabit bandwidth
2. Medium-scale IP surveillance aggregation for 60W PTZ cameras without 90W UPOE++ power demand
3. Modern office workgroup access with mixed laptops, IoT sensors and video conference endpoints
4. SD-Access fabric access layer deployments requiring full TrustSec segmentation and advanced routing
5. Mid-size branch office stacking with unified on-prem DNA Center lifecycle automation

Key Distinction Note

• -A (Network Advantage): Full advanced routing, ETA analytics, TrustSec segmentation, SD-Access fabric and container hosting features
• -E (Network Essentials): Baseline Layer 2 & lightweight Layer 3 routing only, excludes BGP, PBR, ETA and fabric segmentation capabilities