Chapter 1 Overview
Features
1-2
Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-03
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Catalyst 2950G-12-EI—12 10/100 Ethernet ports and 2 Gigabit Interface
Converter (GBIC) module slots
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Catalyst 2950G-24-EI—24 10/100 Ethernet ports and 2 GBIC module
slots
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Catalyst 2950G-24-EI-DC—24 10/100 Ethernet ports and 2 GBIC
module slots with direct current (DC)-input power
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Catalyst 2950G-48-EI—48 10/100 Ethernet ports and 2 GBIC module
slots
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Catalyst 2950SX-24 switch—24 10/100 Ethernet ports and
2 1000BASE-SX ports
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Catalyst 2950T-24 switch—24 10/100 Ethernet ports and 2 10/100/1000
Ethernet ports
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On Catalyst 2950G-12-EI, 2950G-24-EI, 2950G-24-EI-DC, and
2950G-48-EI switches, support for these GBIC modules:
1000BASE-SX GBIC
1000BASE-LX/LH GBIC
1000BASE-ZX GBIC
1000BASE-T GBIC (model WS-5483)
Coarse Wave Division Multiplexer (CWDM) fiber-optic GBIC
GigaStack GBIC
• Configuration
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For 10/100 ports, autonegotiates the speed and duplex settings
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For 10/100/1000 ports, autonegotiates the speed and supports only
full-duplex mode
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For 100BASE-FX ports, supports only 100-Mbps and full-duplex
settings
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For 1000BASE-SX ports, supports only 1000-Mbps and full-duplex
settings
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Supports 8192 MAC addresses
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Checks for errors on a received packet, determines the destination port,
stores the packet in shared memory, and then forwards the packet to the
destination port