Full English Description for Cisco C9300L-48UX-4G-A

1. Part Number Naming Breakdown

Model: C9300L-48UX-4G-A

• C9300L: Catalyst 9300 Lite cost-optimized stackable fixed-uplink Layer 3 enterprise access switch built on UADP 2.0 ASIC architecture
• 48UX: Mixed 48-port UPOE copper combination: 12 Multi-Gigabit mGig ports (100M/1G/2.5G/5G/10G) + 36 standard 10/100/1000BASE-T Gigabit ports, all ports support Cisco UPOE up to 60W per port, backward compatible with IEEE 802.3af PoE (15.4W) and IEEE 802.3at PoE+ (30W)
• 4G: 4 integrated fixed 1G SFP uplink slots, only compatible with 1G SFP transceivers; 10G SFP+ modules are unsupported
• A: Preloaded perpetual Network Advantage IOS XE software license tier, unlocking full enterprise routing suite, SD-Access fabric, TrustSec segmentation, advanced security and complete end-to-end network automation capabilities

2. Short Sales One-Liner (For BOM, Quotation & Datasheet Header)

Cisco Catalyst C9300L-48UX-4G-A, 1RU stackable Layer3 mixed mGig+Gigabit UPOE access switch, 12×Multi-Gigabit + 36×Gigabit full UPOE RJ45 downlinks with 880W native UPOE power budget, 4 fixed 1G SFP uplink interfaces, Network Advantage IOS XE license, StackWise-320 stacking support, factory pre-installed 1100W AC power supply, multi-speed high-power PoE edge switch for Wi‑Fi 6/6E APs, PTZ IP cameras, digital signage and desktop endpoints requiring 1G fiber aggregation uplinks.

3. Complete Product Overview Paragraph

The Cisco Catalyst C9300L-48UX-4G-A is a mixed multi-gigabit fixed-uplink stackable Layer 3 UPOE access switch within the Catalyst 9300 Lite product lineup, engineered for enterprise campuses, retail venues, education facilities and large branch networks with mixed endpoint deployments: high-speed Wi‑Fi 6/6E wireless APs, PTZ surveillance cameras and digital signage utilize the 10G-capable mGig ports, while standard PCs, IP phones and low-power IoT devices connect to the 1G copper ports. All 48 ports deliver full Cisco UPOE power up to 60W per port. Equipped with four built-in 1G SFP fiber uplink ports, this chassis delivers wire-speed Layer 2 switching and full-featured enterprise Layer 3 routing enabled by the included Network Advantage license. It supports StackWise‑320 stacking technology to combine up to 8 identical switches into a single logical switching stack, features dual hot‑swappable 1100W AC power supply bays delivering a base 880W UPOE power budget, and natively integrates with Cisco DNA Center for zero-touch provisioning, unified network automation, full flow telemetry and SD‑Access TrustSec security group segmentation for software-defined campus fabric architectures.

4. Detailed Hardware Interface Specifications

Downlink Copper Ports (48×Mixed mGig + Gigabit UPOE)

• 12 × Multi-Gigabit mGig RJ45 ports: auto-negotiate 100Mbps / 1Gbps / 2.5Gbps / 5Gbps / 10Gbps, full Cisco UPOE compliant, max 60W power per port
• 36 × 10/100/1000BASE-T Gigabit RJ45 ports, full Cisco UPOE compliant, max 60W power per port
• All ports backward interoperable with IEEE 802.3af (15.4W PoE) and IEEE 802.3at (30W PoE+) powered devices
• Auto speed negotiation, auto‑MDI/MDI‑X, integrated cable diagnostics, EnergyWise intelligent PoE power management to cut power consumption for idle high-power endpoints
• Hardware-native support for 128-bit and 256-bit AES MACsec port encryption

Fixed Uplink Interfaces

• 4 onboard dedicated SFP slots exclusively for 1G SFP transceivers (SX, LX, ZX, SFP-T copper modules supported)
• No compatibility with any 10G SFP+ optical or copper transceivers; each uplink limited to 1G bandwidth

Management & Auxiliary Ports

• USB Type‑A storage port for offline IOS image upload, configuration backup and system log export
• Dual console access: USB Type‑C console port + Mini‑USB B console port for local CLI administration
• UID beacon LED push-button for rapid physical device identification in dense rack deployments
• Rear dedicated StackWise‑320 stacking connectors; stacking cable kits sold separately as optional accessories

Power & Physical Form Factor

• Form Factor: 1RU standard 19-inch rack-mount chassis
• Dual hot‑swappable redundant AC power supply slots; factory pre-shipped with single 1100W AC PSU (PWR‑C1‑1100WAC‑P)
• UPOE power budget: Single 1100W PSU provides total 880W UPOE capacity; dual redundant PSUs drastically expand total PoE output for full high-power endpoint deployments
• Thermal design: Field-replaceable redundant variable-speed fan trays with overheat fault protection and front-panel LED status indicators

5. Core Hardware Performance Benchmarks

• Standalone Switching Capacity: 392 Gbps
• Standalone Forwarding Rate: 291.66 Mpps
• StackWise‑320 maximum stacked backplane bandwidth: 592 Gbps (stack of up to 8 C9300L switches)
• MAC Address Table Size: 32,000 MAC forwarding entries
• Shared Packet Buffer Memory: 32MB
• Onboard Memory: 8GB DRAM, 16GB Flash storage
• VLAN Support: Up to 4,094 802.1Q tagged VLANs; maximum 1,000 active STP VLANs & SVIs
• QoS Hardware Queues: 8 priority hardware queues per port, full DSCP & 802.1p CoS mapping
• Routing Table Scales: 32,000 IPv4 unicast routes, 16,000 IPv6 unicast routes, 8,000 multicast routes
• Jumbo Frame Support: Up to 9198-byte jumbo frames
• ACL Capacity: 5,120 ingress/egress ACL entries
• Flexible NetFlow: Supports up to 64,000 active flow records

6. Full Layer 2 Standard Feature Suite

IEEE 802.1Q VLAN trunking, IEEE 802.3ad LACP EtherChannel (max 8 ports per bundle), complete spanning tree suite including PVST+, RPVST+, MSTP with BPDU guard, root guard, loop guard and UDLD; LLDP and CDP unified device discovery inventory, port security with sticky MAC allowlist learning, broadcast/multicast storm suppression, IGMP Snooping v1/v2/v3, SPAN/RSPAN remote port mirroring, private VLANs, voice VLAN auto-detection and traffic prioritization, hardware MACsec link encryption.

7. Network Advantage (-A License) Exclusive Layer 3, Security & Fabric Features

Full Enterprise Dynamic Routing Protocols

Static IPv4/IPv6 routing, RIP, OSPFv2/v3, full EIGRP, BGP, IS‑IS, PIM ASM/SSM multicast routing, VRRP, HSRP, GLBP gateway redundancy, wire-speed inter-VLAN routing, dual-stack IPv4/IPv6 forwarding, VRF‑lite, policy-based routing (PBR), MPLS edge functionality.

Advanced Enterprise Security Toolset

IEEE 802.1X multi-domain/multi-host authentication, MAB MAC bypass authentication, DHCP snooping, Dynamic ARP Inspection (DAI), IP Source Guard, CoPP control-plane policing, TrustSec SGT tagging & end-to-end segmentation, Adaptive Policy security group mapping, Encrypted Traffic Analytics (ETA), Cisco Secure Boot, hardware Trust Anchor Module, Cisco Umbrella DNS integration, multi-level RBAC admin access control, TLS/SSH/HTTPS encrypted management transport.

Automation, Visibility & SD‑Access Fabric Capabilities

Native Cisco DNA Center integration, zero-touch provisioning (ZTP), NETCONF/RESTCONF/YANG/gRPC model-driven programmability, full Flexible NetFlow telemetry, complete SD‑Access fabric support with virtual network segmentation, embedded Catalyst 9800 wireless controller, ThousandEyes application performance monitoring integration, unified stack-wide policy orchestration and cross-site topology visualization.

8. License Differentiator: Network Advantage (-A) vs Network Essentials (-E)

The suffix -A (Network Advantage) is Cisco’s top perpetual license tier for Catalyst 9300L fixed-uplink switches, with critical feature upgrades over entry-level -E Network Essentials:

1. Unlocks advanced routing protocols unavailable on -E: BGP, full EIGRP, MPLS, VRF‑lite, policy-based routing
2. Native SD‑Access fabric and TrustSec Adaptive Policy zero-trust segmentation support exclusive to -A models
3. Enables Encrypted Traffic Analytics (ETA), full DNA Center automation workflows and ThousandEyes application monitoring
4. No OSPF dynamic route count limitation (Network Essentials caps OSPF learned routes at 1,000)
   All switches within a single StackWise stack must deploy identical license tiers to guarantee full stacking interoperability and consistent feature operation.

9. Datasheet Short Summary Paragraph

The Cisco Catalyst C9300L-48UX-4G-A is a mixed multi-gigabit UPOE stackable Layer 3 access switch equipped with 12×10G-capable mGig + 36×Gigabit full UPOE downlinks and four fixed 1G SFP fiber uplink ports. Powered by the full-feature Network Advantage IOS XE license, it delivers comprehensive Layer 2 switching, complete enterprise Layer 3 routing, advanced threat security, full DNA automation and native SD‑Access fabric segmentation, supported by StackWise‑320 high-speed stacking and redundant 1100W AC power supplies with an ample 880W UPOE power budget. It is the ideal wired edge solution for mixed-speed campus, retail and branch networks deploying high-performance Wi‑Fi 6/6E APs, PTZ cameras, digital signage and standard desktop endpoints requiring cost-effective 1G fiber aggregation uplinks and full software-defined fabric functionality.