Cisco WS-C3524-PWR-XL-EN Installation Manual page 33

Chapter 1 Product Overview
GBIC Module Slots
Note
78-6456-04
only provides power if a Cisco IP Phone is connected to it. The Auto setting is the
default. However, when you select the Never setting for inline power on a port,
the port does not provide power even if a Cisco IP Phone is connected to it.
You also can connect the Cisco IP Phone to a Catalyst 3524-PWR XL 10/100 port
and to an AC power source for redundant power. The power source to which the
Cisco IP Phone is first connected becomes its primary power source, and the
second power source is its backup. If the primary source fails, the second power
source becomes the primary power source to the Cisco IP Phone. During the
power transfer, the phone might reboot or reestablish link with the switch.
For information about Cisco IP Phones, refer to the documentation that came with
your Cisco IP Phone.
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.
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.
Catalyst 3500 Series XL Hardware Installation Guide
Front-Panel Description
1-9