Cisco Catalyst C9300-48UXB-A Full Official English Description
1. Product Brief Overview
The Cisco Catalyst C9300-48UXB-A is a 1 rack-unit (1RU) stackable high-scale deep-buffer Multigigabit UPOE enterprise access switch from the Catalyst 9300 standard platform family, preloaded with perpetual Network Advantage software license. The suffix “UXB” stands for Multi-Gigabit UPOE with Deep Buffer Higher-Scale ASIC, delivering doubled packet buffer, expanded MAC/ACL/route table capacity compared to standard C9300-48UX fixed uplink models. Equipped with 48 mGig UPOE RJ45 downlinks plus integrated fixed 4×SFP+ uplinks, this switch is purpose-built for high-density Wi-Fi 6/6E APs, 4K IP surveillance cameras, digital signage, multi-POS retail terminals and high-throughput IoT edge deployments. Powered by Cisco IOS XE, it supports StackWise-480 stacking, StackPower intelligent PoE power pooling, full Zero Trust security and SD-Access campus fabric capabilities for large, high-traffic enterprise floors, education buildings and healthcare facilities.
2. Port Hardware Specification
Downlink Ports (48× Multigigabit Shielded RJ45 UPOE)
-
Auto-negotiated line rates: 100 Mbps / 1 Gbps / 2.5 Gbps / 5 Gbps / 10 Gbps Multigigabit Ethernet
-
Port speed segmentation: 36 ports capped at max 2.5 Gbps; 12 dedicated high-speed ports support full 10 Gbps operation over Cat5e/Cat6A copper cabling
-
PoE standard: Cisco proprietary UPOE (Universal Power over Ethernet), up to 60W DC power delivery per port
-
Connector: Shielded RJ45, full 4-pair twisted pair power transmission support
Fixed Integrated Uplink Interfaces (Non-Modular Built-in)
-
4 integrated SFP+ uplink slots, compatible with 1G SFP and 10G SFP+ copper/optical transceivers
Management & Auxiliary Interfaces
-
1× RJ45 out-of-band Ethernet management port
-
1× RJ45 serial console port, compatible with USB-C console adapter accessories
-
1× USB Type-A storage port for offline firmware upload, configuration backup and log export
-
Rear dedicated StackWise-480 stacking ports for inter-chassis logical stacking ring
-
Rear StackPower power stacking ports to aggregate PoE power resources across stacked switch members
3. Switching & Forwarding Performance (Higher-Scale Deep Buffer ASIC)
-
Full-duplex non-blocking switching capacity: 580 Gbps
-
Combined IPv4/IPv6 packet forwarding rate: 431.54 Mpps (Million Packets Per Second)
-
Maximum MAC address table entries: 128,000 (2× standard UX model capacity)
-
Maximum IPv4 unicast routes (Network Advantage): 32,000
-
Maximum IPv6 unicast routes: 16,000
-
Layer 2 / Layer 3 multicast group capacity: 32,000 entries
-
ACL scale: Doubled access control list entry limits for heavy policy filtering
-
Dynamic shared deep packet buffer pool: 32 MB (twice the 16 MB buffer of standard C9300-48UX variants), eliminates congestion drops in burst-heavy video, wireless and IoT traffic
4. Memory & Storage
-
System DRAM: 8 GB DDR4
-
Onboard flash storage: 4 GB eMMC, stores IOS XE images, startup/running configurations, event logs and telemetry data
5. PoE & Power Supply Specifications
-
Factory pre-installed PSU: PWR-C1-1100WAC-P auto-ranging AC power supply
-
Total available UPOE power budget with single 1100W PSU: 490W
-
Dual hot-swappable redundant AC power supply bays for power fault tolerance
-
StackPower technology: Pool PoE power across up to 8 stacked switches, dynamically redistribute power to high-consumption 60W UPOE endpoints
-
AC input voltage range: 100–240 VAC, auto-sensing 50/60 Hz
-
Multi-tier per-port power delivery: IEEE 802.3af PoE (15.4W), IEEE 802.3at PoE+ (30W), Cisco UPOE (60W)
6. Stacking Capability
-
Stacking architecture: Cisco StackWise-480
-
Full-duplex ring stacking bandwidth: 480 Gbps
-
Maximum stack members: Up to 8 mixed Catalyst 9300 series higher-scale and standard switches in one logical stack
-
Supported high availability functions: Stateful Switchover (SSO), Nonstop Forwarding (NSF), In-Service Software Upgrade (ISSU)
-
Redundant ring topology for automatic failover upon stacking cable disconnection
7. Physical Mechanical Specifications
-
Form factor: Standard 1RU rack-mount chassis
-
Dimensions (H × W × D): 1.73 in × 17.5 in × 22.2 in (4.4 cm × 44.5 cm × 56.4 cm)
-
Unit weight with single 1100W PSU installed: ~9.3 kg / 20.5 lbs
-
Front panel indicators: Per-port link/activity LED, global system power LED, stack status LED, PoE fault alarm LED
-
Rear panel layout: StackWise stacking connectors, StackPower power stacking ports, dual PSU slots, dual hot-swappable variable-speed fan trays
-
Cooling system: Redundant smart fan trays with temperature-based automatic speed adjustment for quiet, efficient thermal management
8. Software License Tier: Network Advantage (-A Suffix)
Permanent Network Advantage license fully unlocked on C9300-48UXB-A, enabling complete enterprise feature set:
-
Full advanced Layer 3 routing suite: OSPF, EIGRP, BGP, PIM sparse/dense multicast, Policy-Based Routing (PBR)
-
SD-Access fabric support for campus virtualization, segmentation and end-to-end TrustSec SGT tagging
-
Hardware-accelerated AES-256 MACsec link encryption on all downlink and uplink ports
-
Zero Trust security toolkit: 802.1X, MAB, WebAuth, Dynamic ARP Inspection (DAI), IP Source Guard, CoPP control plane policing
-
Advanced traffic analytics: Hardware Flexible NetFlow v9, Encrypted Traffic Analytics (ETA), 64,000 concurrent flow monitoring entries
-
Full QoS enhancements: Hierarchical QoS (HQoS), class-based marking, policing, shaping, multi-queue per-port scheduling optimized for bursty deep-buffer workloads
-
Complete network automation: RESTCONF, NETCONF, YANG data models, Python Guest Shell, full Cisco DNA Center assurance and automation integration
-
High availability cross-stack features: ISSU, SSO, NSF, cross-stack LACP link aggregation, cross-stack QoS and security policy sync
9. Base Operating System & Core Security Capabilities
-
Operating system: Cisco IOS XE 17.x release train optimized for higher-scale deep-buffer ASIC
-
Platform security foundations: Secure Boot, firmware digital signature validation, encrypted local credentials, TACACS+/RADIUS AAA authentication
-
Mobility & IoT optimizations: Fast Wi-Fi client roaming, AP traffic priority scheduling, configurable UPOE power time schedules
-
Manageability suite: SNMP v3, SSHv2, TLS 1.3 HTTPS, local syslog, remote log forwarding, zero-touch provisioning (ZTP), model-driven telemetry streaming
10. Typical Deployment Scenario
The C9300-48UXB-A targets large high-traffic enterprise access floors, university campus buildings, multi-camera healthcare facilities and high-density retail chains suffering from frequent traffic bursts, wireless congestion and video streaming workloads. Its 32 MB deep packet buffer eliminates packet loss during peak simultaneous wireless client and IP camera traffic, while expanded MAC and route table capacity supports thousands of concurrent wired/wireless endpoints per stack. Fixed 4×SFP+ uplinks deliver cost-effective 10G fiber aggregation to distribution/core layers without modular uplink card overhead, and full Network Advantage licensing enables SD-Access segmentation, advanced routing and enterprise-grade security for large hybrid workplace campus networks.
|
