Installation guide

Chapter 1 Product Overview
Front-Panel Description
1-10
Catalyst 3500 Series XL Hardware Installation Guide
78-6456-03
GBIC Module Slots
The Cisco Gigabit Interface Converter (GBIC) module slots support the following
modules to provide flexibility in media and distance options:
• 1000BaseSX GBIC module for fiber connections of up to 550 meters.
• 1000BaseLX/LH GBIC module for fiber connections of up to 10 kilometers.
• 1000BaseZX GBIC module for fiber connections of up to 100 kilometers.
• GigaStack GBIC module for creating a 1-Gbps stack configuration of up to
nine Catalyst 3500 XL switches. The GigaStack GBIC supports one
full-duplex link (in a point-to-point configuration) or up to nine half-duplex
links (in a stack configuration) to other Gigabit Ethernet devices. Using the
required Cisco proprietary signaling and cabling, the maximum distance for
a GigaStack GBIC-to-GigaStack GBIC connection is 1 meter.
You can install up to two GBICs in the Catalyst 3512, 3524, 3524-PWR and
3548 XL switches and up to eight GBICs in the Catalyst 3508G XL switch.
Note GBIC modules are not factory-installed on these switches, but you
can order GBIC modules separately.
Figure 1-7 and Figure 1-8 show how a GBIC module is inserted into a GBIC
module slot on the switch. Refer to the documentation that came with your GBIC
module for complete GBIC module information.