1-5
User Guide for the Catalyst Express 520 Switches
OL-12761-02
Chapter 1 Introduction
Overview
• Switches C and D: Use the Catalyst Express 520-24TT-K9 or the Catalyst
Express 520G-24TC-K9 model to provide high-speed (up to 100 Mb/s and
1000 Mb/s, respectively) connections to network users.
You can also use the Catalyst Express 520-24LC-K9 or the Catalyst
Express 520-24PC-K9 model to connect Cisco prestandard and IEEE
802.3af-compliant powered devices, such as IP phones and access points, to
your network. PoE connections from these switches can provide both network
access and power for up to 4 or up to 24 PoE devices, respectively.
If the switch detects that there is no power on the circuit, the PoE ports
provide up to 15.4 W of power to attached PoE devices. You can place PoE
devices where power outlets are not available or are not convenient and thus
avoid cabling costs.
You can manage the network onsite or remotely through the Cisco Configuration
Assistant network management application. Through Cisco Configuration
Assistant, you can also optimize the switches. For example, you can configure
VLANs that give priority to voice traffic over regular data traffic from the desktop
devices attached to the IP phones. Other VLANs can provide different types of
network users—wired employees, wireless (or mobile) employees, and wired and
wireless company visitors—with different access levels to the company network.
Figure 1-2 Catalyst Express Switch Network Example
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