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Cisco Catalyst
Intelligent Ethernet Switches for Metro Access
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3550
Series
Product Overview
The Cisco Catalyst
Ethernet switches is a line of powerful,
fixed-configuration multilayer switches that
extend intelligence to the metro access edge,
enabling service breadth, availability,
security, and manageability. Key components
of the Cisco Metro Ethernet Switching
portfolio, these switches are ideal for service
providers looking to deliver profitable
Ethernet services while minimizing total
cost of ownership. With a range of Fast
Ethernet, Gigabit Ethernet, DC power, and
fiber configurations, the Cisco Catalyst
3550 Series is the ideal metro access switch
for enterprise and small and medium-sized
business markets. Featuring 802.1Q
tunneling, high-performance IP routing,
and subsecond Spanning-Tree Protocol
(STP) convergence, this line of powerful,
yet cost-effective, fixed-configuration
switches enable a variety of metro services,
such as transparent LAN services and
business-class Internet access.
The Cisco Catalyst 3550 Series Intelligent
Ethernet switches include the following
configurations:
• Cisco Catalyst 3550-24 Switch—
24 10/100 ports and 2 Gigabit Interface
Converter (GBIC)-based Gigabit
Ethernet ports; 1 rack unit (RU)
• Cisco Catalyst 3550-24-DC Switch—
24 10/100 ports and 2 gigabit interface
converter (GBIC)-based Gigabit
Ethernet ports; 1 RU DC-powered
Cisco Systems, Inc.
®
3550 Series Intelligent
Page 1 of 20
• Cisco Catalyst 3550-24-FX Switch—
24 100FX multimode fiber ports and
2 GBIC-based Gigabit Ethernet
ports; 1 RU
• Cisco Catalyst 3550-48 Switch—
48 10/100 ports and 2 GBIC-based
Gigabit Ethernet ports; 1 RU
• Cisco Catalyst 3550-12G Switch—
10 GBIC-based Gigabit Ethernet ports
and 2 10/100/1000BaseT ports; 1.5 RU
• Cisco Catalyst 3550-12T Switch—
10 10/100/1000BaseT ports and
2 GBIC-based Gigabit Ethernet
ports; 1.5 RU
The built-in Gigabit Ethernet ports
accommodate a range of GBIC transceivers,
including the Cisco Course Wave Division
Multiplexing (CWDM) GBIC Solution,
®
GigaStack
GBIC, 1000BaseT,
1000BaseSX, 1000BaseLX/LH, and
1000BaseZX GBICs. High levels of
resiliency can also be implemented by
deploying dual redundant Gigabit Ethernet
uplinks, UplinkFast and Per-VLAN
Spanning Tree Plus (PVST+) for uplink load
balancing. This Gigabit Ethernet flexibility
makes the Cisco Catalyst 3550 Series
switches an ideal metro access edge
complement to the Cisco 7600 Series
Internet Router and Cisco Catalyst 6500
Series of metro Ethernet switches.
Data Sheet