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The Cisco Catalyst® 3550 24 DC is a member of the Catalyst 3550 Series Intelligent Ethernet Switches, a line of enterprise-class, stackable, multilayer switches that provide high availability, security and quality of service (QoS) to enhance the operation of the network. With a range of Fast Ethernet and Gigabit Ethernet configurations, the Catalyst 3550 Series can serve as both a powerful access layer switch for medium enterprise wiring closets and as a backbone switch for mid-sized networks.
For the first time, customers can deploy network-wide intelligent services, such as advanced quality of service (QoS), rate-limiting, Cisco security access control lists, multicast management, and high-performance IP routing - while maintaining the simplicity of traditional LAN switching.
Embedded in the Catalyst 3550 Series is the Cisco Cluster Management Suite (CMS) Software, which allows users to simultaneously configure and troubleshoot multiple Catalyst desktop switches using a standard Web browser. Cisco CMS Software provides new configuration wizards that greatly simplify the implementation of converged applications and network-wide services.
24 x Fast Ethernet Network / 2 x Gigabit Ethernet Expansion Slot
Manufacturer Part Number
Cisco Systems, Inc
Catalyst 3550-24-DC Ethernet Switch
Expansion Slot Type
Number of Total Expansion Slots
10Base-T / 10/100Base-TX
Media Type Supported
Catalyst 3550 Multilayer Switch Hardware Installation GuideWhere to Find the Catalyst 3550 Documentation flyerCisco Documentation CD-ROMFour rubber feet for mounting the switch on a tableTwo 19-inch rack-mounting bracketsSix Phillips flat-head screws for attaching the brackets to the switchFour Phillips machine screws for attaching the brackets to a rackOne cable guide and one black Phillips machine screw for attaching the cable guide to one of the mounting bracketsOne RPS connector cover (for wall mounting)Two Phillips pan-head screws (for attaching the RPS cover)Four Phillips truss-head screws (for wall-mounting brackets)One DC terminal block plug (also called a terminal block header)One ground lugTwo number-10-32 screws for attaching the ground lug to the switchTwo 23-inch rack-mounting brackets (with 1-inch spacing for telco racks)Four number-8 Phillips truss-head screws for attaching the brackets to the switchTwo number-12 Phillips machine screws for attaching the brackets to a rackOne RJ-45-to-DB-9 adapter cableCisco Information Packet, containing warranty, safety, and support information
Per-port status LEDs: Link integrity Disabled Activity Speed Full-duplex indications System status LEDs: System RPS Bandwidth utilization indications
Number of Ports
Fast Ethernet Port
10000 ft Maximum Operating / 15000 ft Maximum Storage
10% to 85% Non-condensing Relative Humidity Operating
32°F (0°C) to 113°F (45°C) Operating / -13°F (-25°C) to 158°F (70°C) Storage
8.8Gbps Switching Fabric / 4.4Gbps Forwarding Bandwidth At Layer 2 and Layer 4 / 6.6Mpps Forwarding Rate For 64-byte Packet
Configurable up to 16,000 unicast routes Configurable up to 2,000 multicast routes Configurable Maximum Transmission Unit (MTU) of up to 1,546 Bytes for bridging of MPLS tagged frames Acoustic Noise: ISO 7770, bystander position operating to an ambient temperature of 30 degrees Celsius: 48 dBa
Catalyst 3550 Multilayer Switch Hardware Installation Guide Where to Find the Catalyst 3550 Documentation flyer Cisco Documentation CD-ROM Four rubber feet for mounting the switch on a table Two 19-inch rack-mounting brackets Six Phillips flat-head screws for attaching the brackets to the switch Four Phillips machine screws for attaching the brackets to a rack One cable guide and one black Phillips machine screw for attaching the cable guide to one of the mounting brackets One RPS connector cover (for wall mounting) Two Phillips pan-head screws (for attaching the RPS cover) Four Phillips truss-head screws (for wall-mounting brackets) One DC terminal block plug (also called a terminal block header) One ground lug Two number-10-32 screws for attaching the ground lug to the switch Two 23-inch rack-mounting brackets (with 1-inch spacing for telco racks) Four number-8 Phillips truss-head screws for attaching the brackets to the switch Two number-12 Phillips machine screws for attaching the brackets to a rack One RJ-45-to-DB-9 adapter cable Cisco Information Packet, containing warranty, safety, and support information
Certifications & Standards
Safety Certifications: UL to UL 1950, Third Edition c-UL to CAN/CSA 22.2 No. 950-95, Third Edition TUV/GS to EN 60950 with Amendment A1-A4 and A11 CB to IEC 60950 with all country deviations NOM to NOM-019-SCFI CE Marking Electromagnetic Emissions Certifications: FCC Part 15 Class A EN 55022 Class A (CISPR 22 Class A) VCCI Class A AS/NZS 3548 Class A BSMI CE Marking Network Equipment Building Systems (NEBS): Bellcore GR-1089-CORE GR-63-CORE SR-3580 Level 3 Standards: IEEE 802.1x IEEE 802.1w IEEE 802.1s IEEE 802.3x full duplex on 10BASE-T, 100BASE-TX, and 1000BASE-T ports IEEE 802.1D Spanning-Tree Protocol IEEE 802.1p CoS Prioritization IEEE 802.1Q VLAN IEEE 802.3ad IEEE 802.3 10BASE-T specification IEEE 802.3u 100BASE-TX specification IEEE 802.3ab 1000BASE-T specification IEEE 802.3z 1000BASE-X specification 1000BASE-X (GBIC) 1000BASE-SX 1000BASE-LX/LH 1000BASE-ZX 1000BASE-CWDM GBIC 1470nm 1000BASE-CWDM GBIC 1490nm 1000BASE-CWDM GBIC 1510nm 1000BASE-CWDM GBIC 1530nm 1000BASE-CWDM GBIC 1550nm 1000BASE-CWDM GBIC 1570nm 1000BASE-CWDM GBIC 1590nm 1000BASE-CWDM GBIC 1610nm RMON I and II standards SNMPv1, SNMPv2c, SNMPv3