Cisco Catalyst C9300-48UX-A Full Official English Description
1. Product Brief Overview
The Cisco Catalyst C9300-48UX-A is a 1 rack-unit (1RU) stackable enterprise Multigigabit access switch belonging to the Cisco Catalyst 9300 Series, licensed with Network Advantage software tier. It features 48 Multigigabit UPOE RJ45 downlink ports with fixed built-in uplink interfaces, designed for high-density Wi-Fi 6/6E APs, IP cameras, digital signage, IoT endpoints and hybrid workplace campus deployments. Built on Cisco IOS XE operating system, it delivers integrated Zero Trust security, hardware-accelerated switching, StackWise-480 stacking and StackPower intelligent power pooling technologyCisco.
2. Port Hardware Specification
Downlink Ports (48× mGig UPOE RJ45)
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Port speed auto-negotiation: 100 Mbps / 1 Gbps / 2.5 Gbps / 5 Gbps / 10 Gbps Multigigabit Ethernet
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Port split speed layout: 36 ports support max 2.5Gbps; 12 dedicated high-speed ports support up to 10Gbps over Cat5e/Cat6A copper cabling
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PoE standard: Cisco UPOE (Universal Power over Ethernet), maximum 60W DC power output per port
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Downlink connector: Shielded RJ45, 4-pair twisted pair copper support
Fixed Uplink Interfaces (Built-in, non-modular)
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Integrated 4× SFP+ uplink slots, compatible with 1G/10G SFP/SFP+ optical/copper transceivers
Management Auxiliary Ports
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1× RJ45 Ethernet out-of-band management port
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1× RJ45 Console port (supports USB-C console adapter accessory)
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1× USB Type-A storage port for firmware upgrade & log export
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StackWise-480 rear stacking ports for inter-switch stacking cables
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StackPower power stacking ports for cross-switch PoE power sharing
3. Switching & Forwarding Performance
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Switching Capacity: 580 Gbps full-duplex non-blocking
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IPv4/IPv6 Forwarding Rate: 431.54 Mpps (Million Packets Per Second)
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Maximum MAC Address Table Entries: 64,000
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Maximum IPv4 Unicast Routes: 32,000 (Network Advantage license)
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Maximum IPv6 Unicast Routes: 16,000
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Multicast Group Support: 32,000 Layer 2/3 multicast entries
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Packet Buffer: 16 MB shared dynamic buffer for all ports
4. Memory & Storage
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System DRAM: 8 GB
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Internal Flash Storage: 4 GB (for IOS XE images, configuration, logs)
5. PoE & Power Supply
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Default factory-installed power supply: PWR-C1-1100WAC-P 1100W AC auto-ranging PSU
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Default total PoE power budget with single 1100W PSU: 490W
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Dual redundant hot-swappable AC power supplies supported (optional second PSU for power redundancy)
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StackPower technology: Pool PoE power across up to 8 stacked switches to redistribute power to high-load ports
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Input AC voltage range: 100–240 VAC, 50/60 Hz auto-sensing
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Per-port power modes: 802.3af PoE (15.4W), 802.3at PoE+ (30W), Cisco UPOE (60W)
6. Stacking Capability
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Stacking Technology: Cisco StackWise-480
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Stack Bandwidth: 480 Gbps full-duplex per stack ring
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Maximum stack members: Up to 8 C9300 series switches mixed within one stack
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High availability features: Stateful Switchover (SSO), Nonstop Forwarding (NSF), In-Service Software Upgrade (ISSU)
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Stack topology: Ring topology with redundant paths for stacking link failure protection
7. Physical Mechanical Specs
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Form Factor: 1RU rack-mount chassis
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Dimensions (H × W × D): 1.73 in × 17.5 in × 22.2 in (4.4 cm × 44.5 cm × 56.4 cm)
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Unit weight (single 1100W PSU loaded): ~9.3 kg / 20.5 lbs
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Front panel: Status LED indicators per port, system power, stack, PoE fault LEDs
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Rear panel: StackWise, StackPower, dual PSU bays, fan trays
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Cooling: Hot-swappable redundant fan trays with variable speed smart cooling
8. Software License Tier: Network Advantage (Suffix -A)
Licensed feature set unlocked on C9300-48UX-A:
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Advanced Layer 3 Routing: OSPF, EIGRP, BGP, PIM Multicast Routing, Policy-Based Routing (PBR)
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SD-Access Fabric support for campus virtualization & segmentation
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Hardware-accelerated MACsec AES-256 link encryption on all downlink/uplink ports
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Zero Trust security suite: 802.1X, MAB, WebAuth, Dynamic ARP Inspection (DAI), IP Source Guard, TrustSec SGT tagging
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Traffic analytics: Flexible NetFlow v9, Encrypted Traffic Analytics (ETA), 64k flow monitoring entries
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QoS enhancements: Hierarchical QoS (HQoS), class-based marking, policing, shaping, per-port queue scheduling
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High availability tools: ISSU, SSO, NSF, cross-stack link aggregation (LACP v1/v2)
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Network automation support: RESTCONF, NETCONF, YANG data models, Python Guest Shell, Cisco DNA Center integration
9. Core Software & Security Features
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Operating System: Cisco IOS XE 17.x release train
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Layer 2 Features: 4096 VLANs, STP/RSTP/MSTP, LACP, VTP v3, Private VLANs, Voice VLAN
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Security: Secure Boot, image signature verification, password encryption, TACACS+/RADIUS, CoPP (Control Plane Policing), port security
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IoT & Mobility Optimizations: Fast roaming for Wi-Fi clients, AP prioritization QoS, UPOE power scheduling
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Manageability: Cisco DNA Center cloud/on-prem management, SNMP v3, SSHv2, HTTPS, local logging, remote syslog
10. Typical Deployment Scenario
C9300-48UX-A is targeted for mid-to-high density enterprise campus access floors, education buildings, healthcare facilities and retail branches. The Multigigabit 10G-capable UPOE ports eliminate costly fiber runs to next-gen Wi-Fi APs, 4K surveillance cameras and high-power IoT devices, while fixed SFP+ uplinks provide cost-effective 10G fiber aggregation to distribution/core layer switches without extra modular uplink card hardware.
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