Cisco 3550 データシート

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Cisco Catalyst

 Series

Intelligent Ethernet Switches for Metro Access

The Cisco Catalyst

®

3550 Series Intelligent

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 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.