Cisco WS-C2950T-48-SI Hardware Installation Manual page 22

Features
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Configuration
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Catalyst 2950 Switch Hardware Installation Guide
1-2
Catalyst 2950G-12-EI—12 10/100 Ethernet ports and 2 GBIC module slots
Catalyst 2950G-24-EI—24 10/100 Ethernet ports and 2 GBIC module slots
Catalyst 2950G-24-EI-DC—24 10/100 Ethernet ports and 2 GBIC module slots with
DC-input power
Catalyst 2950G-48-EI—48 10/100 Ethernet ports and 2 GBIC module slots
Catalyst 2950ST-8 LRE switch—8 LRE ports, 2 10/100/1000 Ethernet ports, and
2 small-form-factor pluggable (SFP) module slots. (Two of the four uplink ports are active at
one time.)
Catalyst 2950ST-24 LRE switch—24 LRE ports, 2 10/100/1000 Ethernet ports, and
2 SFP module slots. (Two of the four uplink ports are active at one time.)
Catalyst 2950ST-24 LRE 997 switch—24 LRE ports, 2 10/100/1000 Ethernet ports, and
2 SFP module slots with DC-input power. (Two of the four uplink ports are active at one time.)
See the Catalyst 2950 LRE switch release notes for a list of supported SFP modules for the
Catalyst 2950 LRE switches.
Catalyst 2950SX-24 switch—24 10/100 Ethernet ports and 2 1000BASE-SX ports
Catalyst 2950T-24 switch—24 10/100 Ethernet ports and 2 10/100/1000 Ethernet ports
Catalyst 2950SX-48-SI switch—48 10/100 Ethernet ports and 2 1000BASE-SX ports
Catalyst 2950T-48-SI switch—48 10/100 Ethernet ports and 2 10/100/1000 Ethernet ports
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
For 10/100 ports, autonegotiates the speed and duplex settings
For 10/100/1000 ports on the Catalyst 2950T-24 switch, autonegotiates the speed and supports
only full-duplex mode
For 10/100/1000 ports on the Catalyst 2950T-48-SI and 2950 LRE switches, autonegotiates the
speed and duplex setting when operating at 10 or 100 Mbps. When the switch is running at 1000
Mbps, it supports only full-duplex mode.
For 100BASE-FX ports, supports only 100-Mbps and full-duplex settings
For 1000BASE-SX ports, supports only 1000-Mbps and full-duplex settings
Supports 8192 MAC addresses
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
Chapter 1 Overview
OL-6156-01