Cisco Catalyst WS-C2950G-48-EI Full English Product Description
1. Short Sales Title (For Quotation & E-commerce Listing)
Cisco WS-C2950G-48-EI 1RU Rack-Mount Modular High-Density Layer 2 Fast Ethernet Access Switch, 48×10/100BASE-TX RJ45 Downlink Ports, 2 Hot-Swappable GBIC Gigabit Uplink Slots, Preloaded Enhanced IOS Image (EI), Cisco Switch Clustering Supported, Wire-Speed QoS, Full 802.1X Authentication, SSHv2, Multi-Layer ACL & Advanced Security, Flexible Fiber/Copper Gigabit Uplink Expansion, Ideal for Large Enterprise Office, Campus Building Dense Access Layer, Large Branch Wiring Closet & Legacy Modular Backbone Deployments
2. Official Product Overview
The Cisco Catalyst WS-C2950G-48-EI is a high-port-density modular managed Layer 2 Fast Ethernet switch from the legacy Catalyst 2950 intelligent edge switching family. It provides 48 fixed 10/100 copper access ports plus two empty hot-swappable GBIC uplink slots for interchangeable Gigabit fiber or copper trunk transceivers, offering flexible long-distance backbone connectivity unavailable on fixed-uplink 2950 variants. The suffix -EI stands for factory pre-installed Enhanced IOS Image, which unlocks the complete suite of advanced enterprise security, AAA authentication, traffic shaping and encrypted management features that are not supported on Standard Image (SI) hardware models.
Model Suffix Breakdown
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2950G: Catalyst 2950 modular platform equipped with dual GBIC Gigabit expansion uplink slots
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48: Forty-eight fixed 10/100 auto-negotiation RJ45 copper downlink access ports for dense end-user connectivity
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G: Two hot-swappable 1000BASE-X GBIC uplink expansion slots supporting multiple Gigabit media types
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EI: Enhanced IOS Image with full advanced Layer 2 security, QoS, ACL filtering and secure remote management functions
This compact 1U metal rack-mount chassis features an internal autoranging AC power supply and built-in cooling fan for stable wiring closet operation. Cisco Switch Clustering technology enables unified single-IP management of multiple Catalyst 2950 series switches to scale port density across multi-floor large campus and enterprise office deployments. All RJ45 ports support auto-negotiation (10/100 speed, half/full duplex) and auto MDI-X to eliminate crossover cable requirements. Hot-swappable GBIC slots support live transceiver replacement without full switch power cycle to minimize production network maintenance downtime.
Equipped with 16 MB DRAM, 8 MB flash storage and shared 32 MB packet buffer memory, the WS-C2950G-48-EI delivers 13.6 Gbps non-blocking switching capacity and 10.1 Mpps wire-speed forwarding rate for 64-byte frames, supporting lossless concurrent transmission of voice, video and data traffic across all 48 copper access ports and dual Gigabit uplinks. It adopts store-and-forward switching architecture to filter corrupted frames and prevent broadcast domain flooding across the entire LAN segment.
3. Port & Hardware Specifications
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48 × 10/100BASE-TX RJ45 auto-sensing copper access ports, auto MDI-X, IEEE 802.3x full-duplex flow control
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2 × hot-swappable 1000BASE-X GBIC uplink slots, compatible with full Cisco GBIC lineup: 1000BASE-SX, LX, LH, ZX, 1000BASE-T copper GBIC
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1 × RJ45 RS232 serial console port for out-of-band CLI configuration without live network access
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Fully modular uplink design, no fixed integrated fiber or copper uplink ports
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Stacking capability: Cisco Switch Clustering via Fast Ethernet or Gigabit GBIC inter-switch trunk links
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Power supply: Internal fixed autoranging AC input (100–240 VAC 50/60 Hz), max power consumption 45W
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Rear RPS connector: Compatible with optional Cisco external redundant power supply for power failure resilience
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Front panel LED indicators: Per-port link/activity, speed, duplex; GBIC slot status, system bandwidth utilization, RPS power fault alarm
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Mounting options: 19-inch 1RU rack-mount brackets included; rubber feet for standalone desktop/shelf placement
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Thermal design: Active fan cooling for standard indoor 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; relative 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) × 242 mm (D)
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Unit weight: 3.3 kg (7.3 lbs)
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MAC address table capacity: Up to 8,000 MAC entries
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MTBF: 510,000 hours under standard office operating conditions
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Warranty: Cisco Limited Lifetime Hardware Warranty
4. Layer 2 Switching, QoS & Enhanced IOS (EI) Full Feature Set
Core Base Switching & QoS Shared Functions
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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 traffic classification
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IEEE 802.3ad Fast EtherChannel / Gigabit EtherChannel static link aggregation for multi-port copper/GBIC trunk bundling
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IEEE 802.1D STP Spanning Tree Protocol + BPDU guard / Root guard 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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SPAN port mirroring for traffic capture and network fault troubleshooting
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IGMP Snooping v1/v2 to reduce redundant multicast bandwidth consumption for video surveillance streams
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Voice VLAN for automatic classification and priority marking of Cisco IP Phone traffic
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Cisco Switch Clustering for single-pane unified 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 adjacent network device discovery
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Web-based Cisco Device Manager & Cisco Express Setup for zero-CLI initial deployment
Exclusive Advanced EI Security & Traffic Features (Not Supported on SI Images)
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IEEE 802.1X port-based authentication with RADIUS/TACACS+ AAA remote access control
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SSHv2 encrypted remote CLI management; SNMPv3 secure encrypted monitoring
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Layer 2/Layer 3/Layer 4 access control lists (ACLs) for granular inbound traffic filtering
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Private VLAN edge for isolated host segmentation on shared access ports
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Ingress port bandwidth rate limiting for traffic shaping and bandwidth governance
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Time-based ACLs for scheduled differentiated network access policies
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DSCP marking and multi-layer advanced QoS reclassification for converged voice/data enterprise networks
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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Secure Remote CLI: SSHv2 encrypted command-line access; fallback password-authenticated Telnet
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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/v3: 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 and capacity planning
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Local Storage: 8 MB onboard flash memory to store IOS operating image, startup-config and running-config files
6. Integrated Enhanced Security Suite
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Multi-level privilege CLI access with encrypted local user password storage
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IEEE 802.1X port authentication to validate end-user devices before granting network access
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Port security to restrict unauthorized end-device MAC addresses per access port
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STP BPDU guard and root 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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Private VLAN edge to isolate connected endpoints from each other on shared switch ports
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SSHv2 and SNMPv3 encryption to secure remote switch management traffic over the LAN
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Manual permanent shutdown of unused ports to reduce unauthorized network access attack vectors
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Dedicated management VLAN isolation to segregate switch control plane traffic from end-user data
7. Typical Deployment Scenarios
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Large enterprise office high-density access layer switch: 48 Fast Ethernet ports connect mass employee PCs, printers and Cisco IP phones; dual GBIC slots support flexible Gigabit multimode/single-mode fiber or copper uplinks to building core switches
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Education campus multi-floor building distribution switch: Cluster multiple WS-C2950G-48-EI units to scale student workstation port density, GBIC fiber transceivers provide long-distance trunking to campus central data center
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Large regional branch office wiring closet core switch: Modular GBIC uplinks adapt to site cabling conditions, supporting fiber trunking back to corporate headquarters
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Manufacturing factory main workshop LAN aggregation: High-density copper ports connect mass HMIs, PLCs and unpowered field sensors; GBIC fiber uplinks extend the factory LAN to remote auxiliary production zones
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Large multi-location retail headquarters back-office aggregation: 48-port high-density design for central retail office staff and POS terminals, modular Gigabit uplinks connect to regional store fiber infrastructure
8. Standard Package Contents
1 × Cisco Catalyst WS-C2950G-48-EI Modular Fast Ethernet Switch (Enhanced IOS EI 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
*GBIC transceivers and external redundant power supply sold separately as optional accessories
Short Commercial Version (For Quotation & Product Catalog)
The Cisco Catalyst WS-C2950G-48-EI is a legacy 1RU rack-mount fan-cooled high-density modular Layer 2 managed Fast Ethernet access switch from the Cisco Catalyst 2950 Series, factory preloaded with Enhanced IOS (EI) full advanced feature set, equipped with 48×10/100BASE-TX non-PoE auto-sensing RJ45 copper access ports plus two hot-swappable GBIC Gigabit uplink expansion slots for flexible fiber/copper backbone connectivity. It supports Cisco Switch Clustering multi-switch unified management, delivers 13.6 Gbps non-blocking switching capacity, 8K MAC address table, 802.1Q VLAN, 802.1p CoS QoS, IGMP Snooping, STP, port security, 802.1X authentication, SSHv2 and full multi-layer ACL filtering. High-port-count modular Gigabit uplink switch for large enterprise office, education campus building and large branch LAN dense access deployments, covered by Cisco Limited Lifetime Hardware Warranty.
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