Cisco Catalyst WS-C2950-12 Full English Product Description
1. Short Sales Title (For Quotation & E-commerce Listing)
Cisco WS-C2950-12 1RU Rack-Mount Layer 2 Fast Ethernet Access Switch, 12×10/100BASE-TX Auto-Sensing RJ45 Ports, Standard IOS Software Image (SI), Fixed Non-Modular Design, Cisco Switch Clustering Supported, Wire-Speed QoS, VLAN & Port Security, Ideal for Small Office, Classroom, Branch Workgroup & Legacy Enterprise Desktop LAN Deployments
2. Official Product Overview
The Cisco Catalyst WS-C2950-12 is a fixed-port Layer 2 managed Fast Ethernet access switch belonging to the legacy Catalyst 2950 Series intelligent edge switching platform, designed for cost-effective end-user connectivity in small-to-medium enterprise, education and remote branch networks. It is factory preloaded with Standard Image (SI) Cisco IOS software, delivering essential Layer 2 switching, QoS, security and multi-switch clustering capabilities without advanced enterprise features available on Enhanced Image (EI) models.
Model Suffix Breakdown
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2950: Catalyst 2950 intelligent edge switch series
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12: Twelve fixed 10/100 auto-negotiate RJ45 copper access ports
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No suffix G / SX / C: Fixed all-copper non-modular chassis, no built-in fiber uplinks or GBIC expansion slots
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Native Standard Image (SI): Base IOS feature set, no advanced routing, rate-limiting or private VLAN functions
This compact 1U metal rack-mount chassis integrates internal autoranging AC power supply and built-in cooling fan for stable wiring closet operation. It supports Cisco Switch Clustering technology to group multiple Catalyst 2950 series switches under a single unified management IP, simplifying centralized configuration and monitoring for multi-unit deployments. All RJ45 ports support auto-negotiation (10/100 Mbps, half/full duplex) and auto MDI-X to eliminate crossover cable requirements.
Equipped with 16 MB DRAM, 8 MB flash storage and shared 8 MB packet buffer memory, the WS-C2950-12 delivers 1.8 Gbps switching fabric capacity and 1.8 Mpps wire-speed forwarding rate for 64-byte frames, enabling non-blocking performance across all 12 access ports for simultaneous voice, video and data traffic. Store-and-forward switching architecture filters corrupted frames to prevent broadcast domain pollution.
3. Port & Hardware Specifications
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12 × 10/100BASE-TX RJ45 auto-sensing copper ports, auto MDI-X, IEEE 802.3x full-duplex flow control
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1 × RJ45 RS232 serial console port for out-of-band CLI configuration
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No modular expansion slots, no dedicated fiber/GBIC uplink ports
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Stacking support: Cisco Switch Clustering via Fast Ethernet trunk links between multiple 2950 switches
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Power supply: Internal fixed AC input (100–240 VAC 50/60 Hz), max power draw 30W
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Redundant power support: Rear-panel RPS connector for optional Cisco external redundant power supply
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Front panel LED indicators: Per-port link/activity, speed, duplex; system status, RPS power status
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Mounting options: 19-inch 1RU rack-mount brackets included; rubber feet for standalone desktop placement
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Thermal design: Active fan cooling for wiring closet ambient environments
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Environmental operating range: 0°C to 45°C (32°F–113°F); storage -25°C to 70°C; humidity 10–85% non-condensing
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Safety & EMI certifications: CE, FCC Class A, UL listed, VCCI Class A
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Physical dimensions: 445 mm (W) × 44.5 mm (H, 1RU) × 240 mm (D)
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Unit weight: 3.0 kg (6.6 lbs)
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MAC address table capacity: Up to 8,000 MAC entries
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MTBF: 520,000 hours under standard office operating conditions
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Warranty: Cisco Limited Lifetime Hardware Warranty
4. Layer 2 Switching, QoS & Standard IOS (SI) Feature Set
Core Supported Features
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Up to 64 active IEEE 802.1Q tagged VLANs, full VLAN ID range 1–1005
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IEEE 802.1p CoS QoS with 4 egress priority queues; Strict Priority / WRR scheduling for voice/video/data prioritization
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IEEE 802.3ad Fast EtherChannel static link aggregation for multi-port trunking
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IEEE 802.1D STP Spanning Tree Protocol to eliminate Layer 2 switching loops
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Port security: Static MAC binding, sticky dynamic MAC learning, port shutdown violation mode
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Broadcast/multicast/unicast storm control to mitigate Layer 2 flooding DoS attacks
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Port mirroring (SPAN) for traffic capture and network troubleshooting
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IGMP Snooping v1/v2 to reduce multicast bandwidth consumption for video streams
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Voice VLAN for automatic Cisco IP Phone traffic classification and priority marking
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Cisco Switch Clustering for single-pane-of-glass management of multiple clustered switches
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RMON Groups 1,2,3,9 real-time traffic statistics monitoring
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NTP time synchronization for consistent system log timestamps
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CDP Cisco Discovery Protocol for automatic neighbor device discovery
Features NOT Supported on Standard SI Image
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Private VLAN edge, ingress rate limiting, ACL QoS classification
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IEEE 802.1X port authentication, SSH encrypted remote CLI
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Advanced security features exclusive to Enhanced Image (EI) variants
5. Full Management Interfaces
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Local Out-of-Band: RJ45 RS232 serial console port for direct Cisco IOS CLI access without live network connectivity
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Remote CLI: Telnet password-authenticated command-line management
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Embedded Web GUI: Browser-based visual switch manager for port, VLAN and QoS configuration
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SNMP v1/v2c: Standard enterprise monitoring compatible with CiscoWorks, CWSI and third-party NMS platforms
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RMON Traffic Analytics: Built-in bandwidth, error and utilization reporting for fault diagnosis
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Local Storage: 8 MB onboard flash memory to store IOS operating image, startup-config and running-config files
6. Integrated Security Suite
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Multi-level privilege CLI access with encrypted local user passwords
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Port security to restrict unauthorized end-device MAC addresses per access port
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STP BPDU guard to block rogue unmanaged switches from corrupting layer 2 topology
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Broadcast storm control to suppress flooding-based denial-of-service threats
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Unused port manual shutdown capability to reduce unauthorized network access vectors
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Separate dedicated management VLAN support to isolate switch control plane traffic
7. Typical Deployment Scenarios
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Small enterprise office workgroup access switch: Connect employee PCs, printers and Cisco IP desk phones over 10/100 copper cabling
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Education classroom and lab networking: Clustered multiple WS-C2950-12 units to scale user port density for student workstations
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Remote branch office wiring closet switch: Low-cost 12-port design for compact branch IT rack deployments
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Legacy industrial auxiliary LAN aggregation: Connect unpowered field sensors, HMIs and monitoring terminals in ventilated factory control rooms
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Retail back-office POS and staff workstation aggregation for small store locations
8. Standard Package Contents
1 × Cisco Catalyst WS-C2950-12 Fast Ethernet Switch (Standard IOS SI Image Preinstalled)
1 × AC power cord
1 × RJ45-to-RS232 console rollover cable
1 × 19-inch 1RU rack mounting bracket kit
Rubber desktop stand feet
Hardware installation guide & Cisco IOS configuration documentation
*External redundant power supply sold separately as optional accessory
Short Commercial Version (For Quotation & Product Catalog)
The Cisco Catalyst WS-C2950-12 is a legacy 1RU rack-mount fan-cooled Layer 2 managed Fast Ethernet access switch from the Cisco Catalyst 2950 Series, preloaded with Standard IOS (SI) feature set, equipped with 12×10/100BASE-TX non-PoE auto-sensing RJ45 copper ports, fixed non-modular all-copper design without fiber uplink slots. It supports Cisco Switch Clustering multi-switch unified management, delivers 1.8 Gbps switching capacity, 8K MAC address table, 802.1Q VLAN, 802.1p CoS QoS, IGMP Snooping, STP, port security and multi-mode CLI/Web/SNMP monitoring. Cost-effective 12-port entry-level switching solution for small office, classroom, remote branch and legacy enterprise desktop LAN deployments, covered by Cisco Limited Lifetime Hardware Warranty.
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