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Catalyst 2950 Desktop Switch Hardware Installation Guide
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Chapter 1 Overview
Front-Panel Description
GBIC Module Ports
The GBIC module slots support these modules:
• 1000BASE-SX GBIC module for fiber-optic connections that cannot exceed
1804 feet (550 meters).
• 1000BASE-LX/LH GBIC module for fiber-optic connections that cannot
exceed 32,810 feet (10 kilometers).
• 1000BASE-ZX GBIC module for fiber-optic connections that cannot exceed
328,100 feet (100 kilometers).
• GigaStack GBIC module for creating a 1-Gbps stack configuration of up to
nine supported 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 GigaStack GBIC-to-GigaStack GBIC
connection cannot exceed 3 feet (1 meter).
For more information about these GBICs, refer to your GBIC documentation.
LEDs
You can use the LEDs to monitor switch activity and performance. Figure 1-9,
Figure 1-10, and Figure 1-11 show the location of the LEDs and the Mode button
that you use to select the port mode. Changing the port mode changes the
information provided by each port status LED.
All of the LEDs described in this section except the utilization meter (UTIL) are
visible in the Cluster Management Suite (CMS). The Catalyst 2950 Desktop
Switch Software Configuration Guide describes how to use CMS to manage
individual switches and switch clusters.
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