Cisco Business CBS250-8P-E-2G Full English Product Description

1. Product Overview

Model Suffix Definition

• 8: 8×10/100/1000BASE-T Gigabit RJ45 PoE access ports
• P: IEEE 802.3at PoE+ supported, up to 30W maximum power output per port
• E: Compact mini desktop chassis powered by external DC wall adapter without built-in rack-mounted internal power supply
• 2G: Two dedicated 1G SFP combo uplink ports for long-distance fiber or copper upstream aggregation

2. Hardware Port Specifications

• Access Ports: 8 auto-sensing 10/100/1000BASE-TX RJ45 PoE+ ports, fully compliant with IEEE 802.3af / 802.3at, Auto MDI/MDI-X, Cat5e/Cat6 cabling compatible
• Total PoE Power Budget: 130W, dynamic power allocation with user-configurable port power priority under overload conditions
• Uplink Interfaces: 2 dedicated 1G SFP combo slots, compatible with standard 1G SFP optical transceivers and Gigabit copper cables for long-distance upstream aggregation
• Management Interfaces: Mini USB serial console port, RJ45 console port, HTML5 encrypted web management GUI, front USB Type-A for configuration/firmware upload, Bluetooth mobile configuration, SNMP v1/v2c/v3
• LED Indicators: Separate front-panel LEDs for global power status, per-port link/activity, 10/100/1000Mbps speed, real-time per-port PoE power consumption and PoE overload warning alarm
• Hardware Reset Button: Recessed physical reset button for one-click full restoration of factory default configurations
• Cooling Architecture: Fully fanless passive heat sink design with zero operational noise, suitable for medical clinics, libraries and quiet open office environments
• Power Supply Mode: External universal DC wall adapter (marked -E), wide AC input 100–240V 50/60Hz; no internal power supply built into chassis

3. Core Performance Parameters

• Switching Capacity: 20 Gbps non-blocking wire-speed switching
• 64-byte Packet Forwarding Rate: 14.88 Mpps
• MAC Address Table Depth: 8,192 MAC entries
• Jumbo Frame Support: Up to 9216 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 PoE & Traffic Load Power Consumption: ~150 VA
• Idle Standby Power Draw: ~9 W

4. Physical & Environmental Specifications

• Form Factor: Compact mini metal chassis, pre-installed rack-mount and wall-mount brackets for flexible deployment
• Dimensions (W × D × H): 160 mm × 185 mm × 44 mm
• Net Weight: 0.48 kg (1.06 lb), lightweight for hidden under-desk installation
• Operating Temperature Range: -5 °C to 50 °C (23 °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

5. Integrated Full Layer 2 + Native Layer 3 Feature Suite

Complete Layer 2 Smart Switch Functions

• IEEE 802.1Q VLAN, supports up to 4094 VLAN IDs, dedicated voice VLAN optimized for mass IP phone deployment
• Full STP suite: STP, RSTP, MSTP with fast convergence to eliminate Layer 2 broadcast forwarding loops
• Static LAG & IEEE 802.3ad LACP dynamic link aggregation for uplink bandwidth bundling
• 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, auto power-off for disconnected idle ports

Exclusive Layer 3 Static Routing (Core Advantage over CBS220 Series)

• Wire-speed IPv4 & IPv6 static inter-VLAN routing to realize cross-VLAN communication without additional independent core routers
• Supports up to 128 static routing entries for segmented small business workgroup network planning

6. Intelligent Multi-Standard PoE+ Power Management

• Automatically detects IEEE 802.3af / 802.3at PD devices, dynamically matching output wattage without manual configuration
• User configurable PoE port priority to protect mission-critical PTZ cameras and Wi-Fi 6/6E APs under power overload
• 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 indicator LEDs
• Multi-layer hardware protection: Short-circuit, over-current, over-voltage, over-temperature automatic thermal shutdown for all PoE ports
• Perpetual PoE maintains stable power output during switch reboot to avoid offline surveillance and voice terminals

7. Enterprise-Grade Multi-Layer Network Security

• 802.1X port authentication, MAC authentication and guest VLAN access control
• Port Security with configurable MAC address limits to defend against malicious MAC flooding attacks
• IPv4/IPv6 bidirectional 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 block IP/MAC address spoofing
• Full-port surge and short-circuit protection for all RJ45 copper ports against faulty Ethernet cables

8. Advanced Hardware QoS Traffic Prioritization

• 4 independent hardware priority queues per Gigabit port
• Automatic identification and mapping of 802.1p CoS and DSCP marked packets without manual setup
• Hybrid Strict Priority + WRR scheduling to minimize latency and jitter for VoIP voice and real-time 4K surveillance video
• Port ingress/egress bandwidth policing and shaping to avoid single-port bandwidth congestion

9. Multi-Mode Local & Centralized Management Advantages

• Local Management: HTML5 web GUI, RJ45/Mini USB dual console CLI, front USB port for one-click configuration backup & restore, 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 Upgrade Mode: TFTP/HTTP batch firmware upgrade supported
• Monitoring Utilities: SNMP v1/v2c/v3, NTP time synchronization, real-time port traffic statistics, sFlow traffic sampling
• Standalone operation only; horizontal hardware stacking function is exclusive to CBS250 "-4G" 1G uplink rack models
• Dual deployment options: Desktop placement or hidden wall mounting under desks and cabinets
• Fanless silent design perfectly matches noise-restricted classroom, medical clinic and open office scenarios
• Dual-purpose 1G SFP combo uplinks reserve long-term bandwidth expansion space for future network fiber upgrades

10. Typical Application Scenarios

• Small retail self-service kiosks deploying Wi-Fi 6/6E APs and entry-level PoE+ multi-megapixel surveillance cameras
• Mini office PoE workgroups equipped with enterprise VoIP phones and low-power wireless gateways
• School auxiliary labs and library quiet monitoring zones requiring fanless silent managed PoE hardware
• Small segmented business networks with demand for Layer 3 inter-VLAN static routing capability
• Remote edge sites requiring independent long-distance Gigabit fiber uplink aggregation
• Cost-optimized converged voice & small-scale surveillance networks without high-wattage PoE++ PTZ camera demands
• Distributed low-bandwidth IoT edge deployment for wireless intercoms and low-speed sensor devices

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