Cisco Catalyst 4900 300-Watt DC power supply PWR-C49-300DC= Hoja De Datos
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Data Sheet
© 2009 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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Cisco Catalyst 4948 Switch
High-Performance, Rack-Optimized Server Switching
Product Overview
The Cisco Catalyst
®
4948 Switch is a wire-speed, low-latency, Layer 2 to 4, 1-rack-unit (1RU),
fixed-configuration switch for rack-optimized server switching. Based on the proven Cisco
®
Catalyst 4500 Series hardware and software architecture, the Cisco Catalyst 4948 offers
exceptional performance and reliability for low-density, multilayer aggregation of high-performance
servers and workstations. High performance and scalability of intelligent network services is made
possible with dedicated specialized resources known as ternary content addressable memory
(TCAM). Ample TCAM resources (64,000 entries) enable high feature capacity, providing wire-
speed routing and switching performance with concurrent provisioning of services such as quality
of service (QoS) and security and helping ensure scalability for today’s network requirements with
ample room for future growth.
The Cisco Catalyst 4948 offers 48 ports of wire-speed 10/100/1000BASE-T with four alternative
wired ports that can accommodate optional 1000BASE-X Small Form-Factor Pluggable (SFP)
optics
1
.
Exceptional reliability and serviceability are delivered with optional internal AC or DC 1+1
hot-swappable power supplies and a hot-swappable fan tray with redundant fans (Figures 1 and
2).
Figure 1. Cisco Catalyst 4948 Series Switch
Figure 2. Rear View of Cisco Catalyst 4948 with Dual Redundant Power Supplies and Removable Fan Tray
1
The Cisco Catalyst 4948 has 52 physical switching ports (48 10/100/1000 and 4 SFP) on the front panel. Up
to 48 of these ports can be active at one time in any combination.