Cisco Business CBS250-8FP-2G Full English Product Description

1. Product Overview

Model Suffix Breakdown

• 8: 8×10/100/1000BASE-T Gigabit RJ45 PoE access ports
• FP: Full PoE+, IEEE 802.3at compliant, up to 30W simultaneous power output per all ports
• 2G: Two dedicated 1G SFP combo uplink ports for long-distance fiber or copper upstream aggregation
  No "-E" suffix means it adopts compact mini desktop metal chassis powered by external wide-range DC wall adapter, without integrated rack-mounted internal AC power supply.
  This web-managed Layer 3 switch delivers wire-speed non-blocking Gigabit switching with a total 120W PoE power budget, fully supporting concurrent 30W PoE+ output on all 8 ports. It reliably powers Wi-Fi 6/6E wireless APs, multi-sensor PTZ surveillance cameras, video intercom terminals and high-power smart building IoT devices. Built with native IPv4/IPv6 inter-VLAN static routing, complete enterprise-grade Layer 2 feature stack, intelligent scheduled PoE control and multi-layer hardware security, it is a cost-effective high-power manageable PoE access switch for small businesses with basic IT operation teams.

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: 120W, dynamic intelligent power allocation with user-configurable port priority under overload conditions
• Uplink Interfaces: 2 dedicated 1G SFP combo slots, compatible with standard 1G SFP optical transceivers and short-distance DAC copper cables for upstream aggregation to core switches
• Management Interfaces: Mini USB serial console port, RJ45 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, Gigabit port speed, real-time per-port PoE power draw and PoE overload warning alarm
• Hardware Reset Button: Recessed physical reset button for one-click full factory default restoration
• Cooling Architecture: Fully fanless passive heat sink design with zero operational noise, suitable for medical clinics, libraries and quiet open office spaces
• Power Mode: External universal DC wall adapter (AC input 100–240V 50/60Hz), no built-in internal PSU inside chassis

3. Core Performance Parameters

• Switching Capacity: 20 Gbps non-blocking wire-speed switching
• 64-byte Packet Forwarding Rate: 14.88 Mpps
• Main Processor: 800 MHz ARM CPU
• Memory: 512 MB RAM, 256 MB Flash storage, 1.5 MB shared packet buffer
• MAC Address Table Depth: 8,192 MAC entries
• Jumbo Frame Support: Up to 9216 bytes for large-capacity 4K surveillance video and bulk file transmission
• Energy Efficiency Standard: IEEE 802.3az EEE auto power shutdown for idle Ethernet links
• Max Full PoE & Traffic Load Power Consumption: ~130 VA
• Idle Standby Power Draw: ~10 W

4. Physical & Environmental Specifications

• Form Factor: Compact mini metal chassis, pre-drilled wall-mount holes on the bottom panel, desktop placement optional
• Dimensions (W × D × H): 268 mm × 185 mm × 44 mm
• Net Weight: 0.52 kg (1.15 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 with advance replacement service

5. Integrated Full Layer 2 + Native Layer 3 Feature Suite (CBS250 Series Core Advantage)

Complete Layer 2 Smart Switch Functions

• 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 for uplink bandwidth bundling
• 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 power-off for disconnected idle ports

Exclusive Native Layer 3 Static Routing (Key Upgrade over CBS220 Layer 2 Models)

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

6. Intelligent Multi-Standard PoE+ Power Management

• Automatic detection of IEEE 802.3af / at PD devices, dynamically matching output wattage without manual configuration
• User-adjustable 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 8 PoE ports
• Perpetual PoE function maintains stable power output during switch reboot to avoid offline surveillance and voice terminals

7. 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/outbound traffic filtering
• Secure management transmission channels: HTTPS encrypted web UI, SSH console CLI, SNMPv3 encrypted data 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 guarantee ultra-low latency and jitter for VoIP voice and real-time 4K surveillance video
• Port ingress/egress bandwidth policing and traffic shaping to prevent single-port bandwidth congestion

9. Multi-Mode Local & Centralized Management Advantages

• Local Management: Intuitive HTML5 web GUI, dual mini USB/RJ45 console CLI, front USB port for offline config backup & firmware upgrade, 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 & Config Operations: TFTP/HTTP batch firmware upgrade, one-click full-config backup & restore for single switch
• Monitoring Utilities: SNMP v1/v2c/v3, NTP time synchronization, real-time port traffic statistics, sFlow traffic sampling
• Standalone operation only; horizontal hardware stacking feature is exclusive to "-4G" 1G rack uplink CBS250 models
• Dual deployment modes: Desktop placement or hidden wall mounting under desks and cabinets
• Fanless silent design fits noise-restricted classrooms, medical clinics and open office environments
• Dual-purpose SFP combo uplinks reserve long-term fiber bandwidth expansion space for future enterprise network upgrades

10. Typical Application Scenarios

• Small retail shopping kiosks deploying high-power Wi-Fi 6/6E APs and multi-sensor PoE+ PTZ surveillance cameras
• Mini campus classroom and library monitoring zones requiring simultaneous full 30W PoE+ output on all ports
• Small segmented business networks needing Layer 3 inter-VLAN static routing capability
• Distributed smart building IoT aggregation for video intercom terminals and multi-sensor security cameras
• Cost-optimized small-scale high-power PoE converged voice & surveillance networks
• Remote quiet edge sites with demand for 1G fiber long-distance uplink aggregation

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