Cisco Business CBS220-48P-4G Full English Product Description

1. Product Overview

Model Suffix Definition

• 48: 48×10/100/1000BASE-T Gigabit RJ45 PoE access ports
• P: IEEE 802.3at PoE+, up to 30W maximum power output per port
• 4G: Four dedicated 1G SFP fiber uplink slots supporting long-distance fiber aggregation and hardware stacking
  No "-E/D" suffix means it adopts standard 19-inch 1RU metal rack-mount chassis with integrated internal wide-range AC power supply, no external desktop DC adapter required.
  This web-managed smart switch features a total 382W PoE power budget, delivering dynamic power allocation for enterprise VoIP phones, low-medium power Wi-Fi 5/6 wireless APs and entry-level multi-megapixel surveillance cameras. Equipped with complete enterprise Layer 2 feature suite, intelligent scheduled PoE control, multilayer security and unified stack management, it is a cost-effective scalable PoE access switch for businesses with basic IT management teams.

2. Hardware Port Specifications

• Access Ports: 48 auto-sensing 10/100/1000BASE-T RJ45 PoE+ ports, fully compliant with IEEE 802.3af / 802.3at, Auto MDI/MDI-X, Cat5e/Cat6 cabling compatible
• Total PoE Power Budget: 382W, intelligent dynamic power allocation with user-configurable port power priority under overload conditions
• Uplink Interfaces: 4 dedicated 1G SFP fiber slots, compatible with standard 1G fiber transceivers and DAC copper cables for long-distance uplink to core aggregation switches or stacking interconnection
• Management Interfaces: RJ45 serial console port, HTML5 encrypted web management GUI, Bluetooth mobile configuration, SNMP v1/v2c/v3
• LED Indicators: Independent front-panel LEDs for global power status, per-port link/activity, 10/100/1000Mbps speed, real-time per-port PoE power draw and PoE overload warning alarm
• Hardware Reset Button: Recessed physical reset button for one-click restoration of factory default configurations
• Cooling Architecture: Fanless passive heat sink design with zero operational noise, suitable for classrooms, medical clinics and quiet open office environments
• Power Supply Mode: Integrated internal universal AC PSU (100–240V 50/60Hz), no external DC wall adapter needed

3. Core Performance Parameters

• Switching Capacity: 144 Gbps non-blocking wire-speed switching
• 64-byte Packet Forwarding Rate: 107.14 Mpps
• MAC Address Table Depth: 16,384 MAC entries
• Jumbo Frame Support: Up to 10,240 bytes for large file and low-bitrate surveillance video transmission
• Energy Efficiency Standard: IEEE 802.3az EEE auto power shutdown for idle Ethernet links
• Max Full Traffic + PoE Load Power Consumption: ~500 VA
• Idle Standby Power Draw: ~38 W
• Input Power: Built-in wide-range internal AC power supply

4. Physical & Environmental Specifications

• Form Factor: Standard full-width 1RU 19-inch metal rack-mount chassis, desktop flat placement optional
• Dimensions (W × D × H): 445 mm × 310 mm × 44 mm
• Net Weight: 3.25 kg (7.16 lb), heavier than non-PoE CBS220-48T-4G variant
• 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 during operation and storage
• Compliance Certifications: CE, FCC, UL, RoHS compliant; Cisco limited lifetime hardware warranty with advance replacement service

5. Complete Layer 2 Smart Switch Feature Set

• IEEE 802.1Q VLAN, supports up to 4094 VLAN IDs, dedicated auto voice VLAN optimized for mass IP phone deployment
• Full STP protocol suite: STP, RSTP, MSTP with 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 stacked devices
• Multicast Optimization: IGMP Snooping v1/v2/v3 + Multicast VLAN Replication to reduce multicast bandwidth waste for multi-camera surveillance and IPTV streams
• Auxiliary L2 Tools: Embedded cable diagnostic tool, hardware port isolation, broadcast/multicast storm suppression, automatic idle-port power cutoff

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

• Supports stacking up to 8 CBS220 4G model switches via 1G SFP uplink ports
• Unified single-IP management for the entire stack, enabling batch configuration, batch firmware upgrades and cross-stack real-time traffic statistics monitoring
• Hot-swappable stack member design with seamless traffic failover during device replacement
• Higher aggregated inter-switch bandwidth compared to non-stackable 2G uplink CBS220 variants

7. Intelligent Multi-Standard PoE+ Power Management

• Automatic detection of IEEE 802.3af / 802.3at PD devices to dynamically match output power without manual configuration
• User-configurable PoE port priority to protect mission-critical PTZ cameras and wireless APs under power overload
• Custom time-based PoE power schedule to cut power supply for off-business-hours terminals and reduce overall energy consumption
• Real-time global and per-port PoE power statistics visible on web management GUI and front panel indicator LEDs
• Multi-layer hardware protection: Short-circuit, over-current, over-voltage and over-temperature automatic thermal shutdown for all 48 PoE RJ45 ports
• Perpetual PoE function maintains stable power output during switch reboot to avoid offline surveillance and voice terminals

8. Enterprise-Grade Multi-Layer Network Security

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

9. Advanced Hardware QoS Traffic Prioritization

• 4 independent hardware priority queues per Gigabit port
• Automatic identification and mapping of 802.1p CoS and DSCP traffic marking
• Hybrid Strict Priority + WRR scheduling to guarantee ultra-low latency and jitter for VoIP voice and real-time surveillance video
• Port ingress/egress bandwidth policing and traffic shaping to prevent single-port bandwidth congestion

10. Multi-Mode Local & Centralized Management Advantages

• 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 multi-branch monitoring, batch configuration push and zero-touch provisioning (ZTP)
• Firmware & Configuration Tools: TFTP/HTTP batch firmware upgrade, one-click full-config backup & restore for single switch or entire stack
• Monitoring Utilities: SNMPv1/v2c/v3, NTP time synchronization, sFlow traffic sampling, real-time port traffic statistics
• Dual deployment options: Standard rack mounting in wiring closets or flat desktop placement
• Fanless silent design fits noise-restricted classrooms, medical clinics and open office spaces
• Wide temperature tolerance supports retail kiosks, warehouse auxiliary zones and distributed smart building IoT deployment

11. Typical Application Scenarios

• Large retail shopping center surveillance networks deploying dozens of PoE+ multi-megapixel security cameras
• Medium-density office PoE workgroups equipped with enterprise VoIP phones and Wi-Fi 5/6 wireless access points
• University main campus labs and library quiet monitoring zones requiring fanless silent hardware
• Scalable multi-switch stacked surveillance networks with unified single-IP batch administration
• Smart building IoT aggregation for voice intercoms and low-speed wireless gateways
• Cost-optimized high-port-count PoE networks without high-wattage 60W PoE++ PTZ camera demands
• Remote medium-sized branch wiring closets requiring multiple independent Gigabit fiber uplink aggregation

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