Cisco Business CBS220-24P-4G Full English Product Description

1. Product Overview

Model Suffix Definition

• 24: 24×10/100/1000BASE-T PoE+ RJ45 access ports
• P: IEEE 802.3at PoE+, maximum 30W power output per port
• 4G: Four dedicated 1G SFP fiber uplink slots for long-distance fiber/DAC upstream aggregation
  No "-E/D" suffix means it adopts standard 19-inch 1RU rack-mount metal chassis with built-in internal universal AC power supply, no external desktop adapter required.
  This web-managed smart switch carries a total 195W PoE power budget, intelligently supplying power for enterprise VoIP phones, low-medium power Wi-Fi 5/6 APs and entry-level multi-megapixel surveillance cameras. It integrates full enterprise-grade Layer 2 switching suite, intelligent scheduled PoE control, advanced QoS and multilayer network security, ideal for SMBs with basic IT management demands.

2. Hardware Port Specifications

• Access Ports: 24×auto-sensing 10/100/1000BASE-T RJ45 PoE+ ports, compliant with IEEE 802.3af / 802.3at, Auto MDI/MDI-X, Cat5e/Cat6 compatible
• Total PoE Power Budget: 195W, dynamic power distribution with user-configurable port power priority under overload
• Uplink Interfaces: 4×dedicated 1G SFP fiber slots, support standard 1G SFP transceivers and DAC copper cables for long-distance uplink to core aggregation switches
• Management Interfaces: RJ45 serial console port, HTML5 encrypted web GUI, Bluetooth mobile configuration, SNMP v1/v2c/v3
• LED Indicators: Independent front-panel LEDs for global power status, per-port link/activity, Gigabit speed, real-time PoE power draw and PoE overload warning alarm
• Hardware Reset Button: Recessed physical reset button to restore full factory default configuration
• Cooling Architecture: Fanless passive heat sink design with zero operational noise, suitable for classrooms, medical clinics and quiet open office environments
• Power Mode: Integrated internal wide-range universal AC PSU (100–240V 50/60Hz), no external DC adapter needed

3. Core Performance Parameters

• Switching Capacity: 72 Gbps non-blocking wire-speed switching
• 64-byte Packet Forwarding Rate: 53.57 Mpps
• MAC Address Table Depth: 16,384 MAC entries
• Jumbo Frame Support: Up to 10,240 bytes for large 4K surveillance video and bulk file transmission
• Energy Efficiency: IEEE 802.3az EEE auto power cut for idle Ethernet links
• Max Full PoE & Traffic Load Power Consumption: ~220 VA
• Idle Standby Power Draw: ~32 W

4. Physical & Environmental Specifications

• Form Factor: Standard full-width 1RU metal rack-mount chassis, desktop flat placement optional
• Dimensions (W × D × H): 445 mm × 349 mm × 44 mm
• Net Weight: 3.05 kg (6.72 lb)
• Operating Temperature Range: 0 °C to 50 °C (32 °F–122 °F), certified for out-of-wiring-closet deployment
• Storage Temperature Range: -25 °C to 70 °C (-13 °F–158 °F)
• Relative Humidity: 10%–90% non-condensing humidity
• Compliance Certifications: CE, FCC, UL, RoHS compliant; Cisco limited lifetime hardware warranty

5. Complete Layer 2 Smart Switch Feature Set

• IEEE 802.1Q VLAN, supports up to 4094 VLAN IDs, dedicated auto voice VLAN optimized for IP phone deployment
• Full STP suite: STP, RSTP, MSTP fast convergence to eliminate Layer 2 broadcast forwarding loops
• Static LAG & IEEE 802.3ad LACP dynamic link aggregation; cross-stack LAG supported for CBS220 4G series stackable switches
• Multicast Optimization: IGMP Snooping v1/v2/v3 + Multicast VLAN Replication to reduce bandwidth waste for multi-camera surveillance and IPTV streams
• Auxiliary L2 Tools: Embedded cable diagnostic tool, hardware port isolation, broadcast/multicast storm suppression, auto power-off for disconnected idle ports

6. Exclusive Horizontal Hardware Stacking (4G Series Only)

• Supports stacking up to 8 Catalyst CBS220 4G model switches via SFP uplink ports
• Unified single-IP management for the whole stack, enabling batch configuration, batch firmware upgrades and cross-stack real-time traffic monitoring
• Hot-swappable stack member design with seamless traffic failover during device replacement
• Higher aggregated inter-switch bandwidth compared to 2G uplink non-stackable CBS220 variants

7. Intelligent PoE+ Power Management

• Auto detection of IEEE 802.3af/at PoE PD devices to automatically match output wattage without manual setup
• Configurable PoE priority mechanism to guarantee power supply for mission-critical IP phones and surveillance cameras under full power load
• Time-based scheduled PoE power on/off to cut energy consumption during off-business hours
• Real-time global & per-port PoE power statistics visible on web GUI and front panel LED indicators
• Multi-layer hardware protection: Short-circuit, over-current, over-voltage and thermal automatic shutdown for all PoE ports
• Perpetual PoE keeps power output active during switch reboot to avoid offline surveillance and voice terminals

8. Enterprise-Grade Multi-Layer Network Security

• 802.1X port authentication, MAC-based authentication and guest VLAN access control
• Port Security with configurable MAC address learning limit to block malicious MAC flooding attacks
• IPv4/IPv6 ACL for fine-grained inbound and outbound traffic filtering
• Secure management channels: HTTPS encrypted web UI, SSH console CLI, SNMPv3 encrypted transmission
• Anti-spoofing defense: Dynamic ARP Inspection (DAI), IP Source Guard to prevent IP/MAC address spoofing
• Full-port surge & short-circuit protection for all RJ45 copper ports against faulty Ethernet cables

9. Advanced Hardware QoS Traffic Prioritization

• 8 independent hardware priority queues per Gigabit port
• Automatic 802.1p CoS / DSCP traffic classification and mapping without manual configuration
• Hybrid Strict Priority + WRR scheduling to minimize latency and jitter for VoIP voice and real-time surveillance video
• Port ingress/egress bandwidth policing and traffic shaping to avoid single-port bandwidth congestion

10. Multi-Mode Local & Centralized Management

• Local Management: Intuitive HTML5 web GUI, RJ45 console CLI, Bluetooth wireless mobile configuration
• Cross-Site Centralized Management: Compatible with Cisco Business Dashboard and Cisco DNA Center for unified batch monitoring and configuration push
• Firmware & Configuration Tools: TFTP/HTTP batch firmware upgrade, one-click full-config backup & restore for single switch or entire stack
• Monitoring Utilities: SNMP v1/v2c/v3, NTP time synchronization, sFlow traffic sampling, real-time port traffic statistics
• Zero-Touch Provisioning (ZTP) supported for mass multi-branch deployment

11. Typical Application Scenarios

• Medium-density office PoE workgroups equipped with enterprise VoIP phones and low-power Wi-Fi 5/6 wireless APs
• Chain retail shopping centers deploying entry-level PoE+ multi-megapixel surveillance cameras
• School campus main labs and library quiet monitoring zones with fanless silent hardware requirements
• Multi-switch stacked managed networks requiring unified single-IP batch administration and scalable port expansion
• Medium satellite branch main wiring closets with demand for future-proof 1G fiber uplink bandwidth
• Cost-optimized converged voice & surveillance networks without high-wattage 60W PoE++ PTZ camera loads
• Distributed smart building IoT aggregation for voice intercoms and low-speed wireless gateways

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