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Catalyst 2984G, 2948G-GE-TX, and 2980G Switch Hardware Installation Guide
78-6286-05
Chapter 1 Product Overview
Switch Description
The Catalyst 2948G switch has 48 autosensing and autoconfiguring
10/100BASE-T Fast Ethernet fixed ports. The Catalyst 2948G-GE-TX switch has
48 autosensing and autoconfiguring 10/100/1000BASE-T ports. The
Catalyst 2980G switch has 80 autosensing and autoconfiguring 10/100BASE-T
Fast Ethernet fixed ports.
GBIC Module Support
The Catalyst 2948G and 2980G switches each have two Gigabit Ethernet uplink
ports with modular Gigabit Interface Converters (GBICs).
A GBIC is a hot-swappable input/output device that plugs into a Gigabit Ethernet
port module and links the port module with a fiber-optic network. For a detailed
description of Gigabit Ethernet ports, see the “GBIC Features” section on
page 4-2.
For a complete list of supported GBIC modules, see Table 4-1 on page 4-3.
Note The Catalyst 2948G-GE-TX switch does not support GBIC modules.
The Gigabit Ethernet ports can be configured with any combination of GBIC
types.
The Gigabit Ethernet ports on these modules are used primarily for backbone
interconnection of other high-performance switches and routers.
SFP Module Support
The Catalyst 2948G-GE-TX switch has four small form-factor pluggable (SFP)
module slots. The switch uses SFP modules to establish Gigabit connections. The
SFP module slots are located on the front of the switch.
An SFP module is a hot-swappable input/output device that plugs into an SFP
module slot, linking the port module with a fiber-optic network.
For a list of SFP modules supported by the Catalyst 2948G-GE-TX switch, see
Table 4-4 on page 4-12.