Cisco 2948G Hardware Installation Guide - Page 31

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. 78-6286-05 Catalyst 2984G, 2948G-GE-TX, and 2980G Switch Hardware Installation Guide 1-3