Full Official English Description – Cisco Catalyst C9300-48HXB-E

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 / 10G BASE-T
• PoE Standard: IEEE 802.3bt Class 8 UPOE++ (UPOE+), maximum 90W DC power output per single copper port
• Rear Modular Uplink Bay: 1 hot-swappable uplink module slot, compatible with SFP+, SFP28, QSFP+, QSFP28 transceivers supporting 10G / 25G / 40G / 100G fiber uplinks
• Stacking Interfaces: Dedicated rear StackWise-1T stacking ports, up to 1 Tbps bidirectional stacking bandwidth; supports stacking of maximum 8 switches into one 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 3.0 storage port for offline firmware upgrade, log export and configuration backup

3. Enhanced Performance Scaling (Key "B" Model Differentiator)

• Standalone Switching Capacity: 2000 Gbps full-duplex
• Standalone Forwarding Rate: 1488 Mpps
• Aggregated Stack Bandwidth: Up to 3000 Gbps across full stack
• MAC Address Table: 64,000 MAC entries (double the capacity of standard C9300X-48HX baseline models)
• IPv4 / IPv6 Routing Table: 64,000 route entries
• Multicast Group Table: 32,000 multicast group entries
• Shared Deep Packet Buffer: 32MB hardware buffer (twice standard HX buffer size) to absorb bursty 4K video, wireless and IoT traffic
• Hardware ACL Scale: 4,000 ingress + 4,000 egress ACL rules, higher scale than non-B HX switches

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 configuration ships with single 1100W AC PSU (PWR-C1-1100WAC-P)
• Total UPOE++ PoE Power Budget:
  Single 1100W PSU: 590W total PoE allocation
  Dual high-wattage PSUs: Maximum 2880W full PoE capacity for full 90W per-port deployment
• Cooling System: 3 field-replaceable variable-speed hot-swap fans with N+1 redundant design, low acoustic noise for office rack deployment
• Universal Input Voltage: 100–240V AC, 50/60Hz mains input

5. Stacking & Cross-Chassis Power Technology

• StackWise-1T: Industry-leading 1 Terabit stacking backplane, sub-50ms convergence during stack member hardware failure
• StackPower: Cross-stack power pooling in ring topology, dynamic PoE load balancing and redundant power backup for edge endpoints
• Mixed Stack Compatibility: Fully inter-stackable with all Catalyst 9300X series switches (HX, HXB, HXN variants), unified single logical management domain

6. Hardware-Accelerated Baseline Enterprise Security (Network Essentials Feature Set)

• MACsec 256-bit AES link encryption supported on all copper downlinks and fiber uplinks
• Trustworthy Systems secure boot, runtime integrity verification and digital firmware authenticity validation
• Endpoint authentication suite: IEEE 802.1X, MAB, basic WebAuth captive portal
• Layer 2 threat prevention: Dynamic ARP Inspection (DAI), DHCP Snooping, IP Source Guard, BPDU Guard, broadcast/multicast storm control
• Secure management transport: SSH, HTTPS, SNMPv3 encrypted communication
  Note: Advanced security features including Encrypted Traffic Analytics (ETA), TrustSec microsegmentation and SD-Access fabric require upgrade to Network Advantage (-A) license tier

7. Layer 2 & Layer 3 Protocol Support

Layer 2 Features

Layer 3 Routing Protocols

8. Software & Cisco DNA Licensing Ecosystem

• Operating System: Cisco IOS XE 17.x universal switch image
• Preinstalled License Tier: Cisco DNA Network Essentials (perpetual)
  Feature scope includes baseline Layer 2/Layer 3 routing, basic telemetry, zero-touch provisioning, standard QoS and entry-level DNA Center integration; excludes ETA, TrustSec, container application hosting, ThousandEyes monitoring and full SD-Access fabric capabilities
• Supported Management Interfaces:
  Local CLI via console/SSH, embedded web UI, Cisco Catalyst Center (DNA Center), Cisco Prime Infrastructure, Zero-Touch Provisioning (ZTP)
• Programmability: NETCONF/YANG, streaming telemetry, on-box Python guest shell (limited feature set under Essentials license)

9. Physical & Environmental Specifications

• Form Factor: 1 Rack Unit (1RU) standard 19-inch EIA rack-mount chassis
• External Dimensions: 445 mm (W) × 483 mm (D) × 44 mm (H)
• Chassis Weight (without power supplies): 6.62 kg (14.59 lbs)
• Operating Ambient Temperature: 0°C ~ +45°C
• Storage Temperature: -40°C ~ +70°C
• Operating Humidity: 5% – 90% non-condensing
• MTBF Rating: 185,420 hours under standard factory operating conditions

10. Model Naming Breakdown

• C9300X: Catalyst 9300X high-bandwidth StackWise-1T sub-series with UADP 2.0sec crypto ASIC
• 48HX: 48-port full multigigabit 10G BASE-T UPOE++ copper hardware chassis
• B: Enhanced deep packet buffer, expanded MAC/route/ACL scale variant
• E: Pre-activated Cisco DNA Network Essentials perpetual license tier

11. Typical Deployment Scenarios

1. Mid-density enterprise campus floor access for Wi-Fi 6/6E high-power Cisco APs with moderate concurrent client traffic
2. Medium-scale IP PTZ camera & video surveillance aggregation leveraging deep buffer for burst video streams
3. General smart building IoT edge aggregation: access control panels, lighting controllers, digital signage and low-power industrial sensors
4. Small-to-medium branch office stacking deployments requiring baseline Layer 3 routing and PoE++ power
5. Entry-level enterprise aggregation layer without SD-Access fabric segmentation requirements

Key Distinction Note

• -E (Network Essentials): Baseline routing, security and management feature set, lower entry cost
• -A (Network Advantage): Full feature suite including ETA, TrustSec microsegmentation, BGP, PBR and SD-Access fabric support