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WS-C3550-48-SMI
Cisco WS-C3550-48-SMI Catalyst 3550 48-Port Fast Ethernet Sw...
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WS-C3550-48-SMI provides managed Fast Ethernet access through 48 non-PoE 10/100 RJ-45 ports and two fixed Gigabit Ethernet GBIC uplink slots. The rack-mount chassis occupies 1U and belongs to the Cisco Catalyst 3550 family. Its Standard Multilayer Software Image, subsequently named IP Base, distinguishes the factory configuration from enhanced-image models. This 48-port Fast Ethernet access switch suits retained enterprise wiring closets where endpoint connectivity remains at 100 Mbps or below. The discontinued WS-C3550-48-EMI carries the enhanced software image on the same access-port configuration. GBIC uplinks accommodate copper or fiber connectivity through the appropriate transceiver rather than through a removable uplink card.
WS-C3550-48-SMI price for new stock is is available on request. Get immediate quote. WS-C3550-48-SMI refurb price is $196.88.
Request bulk order quote for WS-C3550-48-SMI for additional pricing. Browse the full Cisco 3550 Catalyst Switches series or explore all Cisco products.
13.6 Gbps switching capacity provides the switching fabric for traffic between the access interfaces and uplinks. 10.1 Mpps forwarding handles 64-byte packets, distinguishing packet-processing performance from fabric bandwidth. Shared packet buffering provides 4 MB across the ports, while an 8000-entry MAC table sets the address-learning ceiling. WS-C3550-48-SMI has 64 MB DRAM and 16 MB flash for operating software and configuration storage. STP and PVST+ support redundant Layer 2 paths; PAgP supports EtherChannel negotiation, and IGMP snooping controls multicast forwarding to interested receivers. OSPF and EIGRP require the enhanced software image rather than the standard image. 86W maximum power consumption provides the chassis draw figure for electrical planning. The fixed internal supply accepts AC input; external backup power uses PWR300-AC-RPS-N1 rather than a second internal supply.
Order WS-C3550-48-SMI from ORM Systems in new sealed or certified refurbished condition, specifying the condition, quantity, software entitlement, and accessory PIDs on the PO. Certified refurbished units are inspected and bench-tested for power-on and POST, rated-speed links on every port, clean boot, and PSU status; firmware is verified and the configuration is wiped to factory default. New units carry up to a 3-year extended warranty, certified refurbished units carry up to a 1-year warranty, and every condition includes 30-day returns; terms apply. Enterprise and volume orders accept POs, with Net-30 for government, RMA with advance replacement, and regional stock and RMA coverage across the UK, EU, US, and MEA.
| Key Specs | Key Spec Values |
|---|---|
Operating System | Cisco IOS |
License Tier | SMI / IP Base |
Port Configuration | 48 x 10/100 / 2 x 1G GBIC |
Stacking | GigaStack / nine members |
Max Power Draw | 86W |
Lifecycle Status | Retired / Cisco support ended |
A staging requirement for retained traffic-prioritization configurations can use the four egress queues per port to reproduce queue assignments and scheduling behavior. Specify the intended software image and the configuration to be exercised before the PO, rather than assuming enhanced-image routing features accompany a standard-image unit.
An organization retaining browser-based administration across existing locations can use Cisco CMS to manage a cluster of 16 interconnected switches through one IP address. Management clustering is separate from the physical interconnection choice. Identify the existing cluster members and administration requirements before specifying the hardware order.
A replacement order for an existing equipment rack needs the mounting hardware identified alongside the chassis, particularly when the previous unit's brackets will not be reused. RCKMNT-1RU= is the rack-mount kit for this model. Specify the bracket requirement and intended rack installation before releasing the PO.
Gigabit speed on every endpoint port
The access interfaces stop at 100 Mbps; Gigabit Ethernet is confined to the GBIC uplinks. A requirement for Gigabit endpoint connectivity exceeds this hardware configuration.
PoE power for connected endpoints
The RJ-45 access ports do not supply endpoint power. Phones, cameras, or access points requiring power from their network connection cannot receive it from this model.
Active Cisco hardware support
Catalyst 3550 hardware is retired and no longer supported by Cisco. A purchase requiring active manufacturer support cannot be fulfilled by this model in either condition.
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| WS-C3550-48-SMI |  WS-C3550-12G |  WS-C3550-24PWR-SMI |  WS-C3550-24-FX-SMI |  WS-C3550-12T | |
|---|---|---|---|---|---|
| Ethernet Technology | Fast Ethernet | Gigabit Ethernet | Fast Ethernet | Fast Ethernet | Gigabit Ethernet |
| Flash Memory | 16 MB | 16 MB | 16 MB | 16 MB | 16 MB |
| Form Factor | Rack-Mount 1U | Rack-Mount 1.5U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1.5U |
| Height | 44.5 mm | 67 mm | 44.5 mm | 44.5 mm | 67 mm |
| Manufacturer Part Number | WS-C3550-48-SMI | WS-C3550-12G | WS-C3550-24PWR-SMI | WS-C3550-24-FX-SMI | WS-C3550-12T |
| Memory | 64 MB | 64 MB | 64 MB | 64 MB | 64 MB |
| Power Consumption | 86W | 190W | 525W | 85W | 190W |
| Switching Capacity | 13.6 Gbps | 24 Gbps | 8.8 Gbps | 8.8 Gbps | 24 Gbps |
| Weight | 5.9 kg | 7.26 kg | 6.35 kg | 5.5 kg | 7.26 kg |
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Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
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WS-C3550-48-SMI identifies a Catalyst 3550 switch with 48 Fast Ethernet access ports and the Standard Multilayer Software Image installed. WS-C3550 identifies the switch family, 48 identifies the access-port quantity, and SMI identifies the software image. The hardware also carries two GBIC-based Gigabit Ethernet uplink slots.
WS-C3550-48-SMI supports Cisco IOS CLI administration and browser-based Cisco CMS management. Local access uses the RJ-45 console connection, while SSH provides a remote CLI path with supporting software. SNMPv1 and SNMPv2c support network monitoring. CMS also permits multiple interconnected switches to share a cluster management address.
WS-C3550-48-SMI belongs to the retired Catalyst 3550 family and is no longer supported by Cisco. New sealed condition does not restore manufacturer support, and refurbishment does not change the hardware lifecycle. Specify retained-system purchases around independent hardware replacement arrangements rather than an expectation of continuing Cisco service.
ORM Systems offers WS-C3550-48-SMI new sealed or certified refurbished, with up to a 3-year extended warranty for new units or up to a 1-year warranty for refurbished units. Both conditions have 30-day returns; terms apply. Cisco's original Limited Lifetime hardware warranty is no longer active because Catalyst 3550 is retired and Cisco support has ended.
WS-C3550-48-SMI has the Standard Multilayer Software Image factory configuration, subsequently named IP Base. The enhanced image is subsequently named IP Services and requires the appropriate upgrade entitlement. CD-3550-EMI= identifies the enhanced-image upgrade kit for this model; specify the required entitlement separately from the hardware condition.
WS-C3550-48-SMI provides non-PoE access, whereas the discontinued WS-C3550-24PWR-SMI provides powered access ports. Port density also differs: 48 access ports versus 24. Both have two GBIC Gigabit Ethernet uplink slots. The former matches retained unpowered endpoint connections; the latter represents the family's lower-density powered configuration.
WS-C3550-48-SMI carries the standard software image, while the discontinued WS-C3550-48-EMI carries the enhanced image with advanced routing features. Both configurations provide 48 Fast Ethernet access ports and two Gigabit GBIC uplinks. Standard-image requirements align with the former; retained configurations requiring enhanced-image routing align with the latter.
WS-C3550-48-SMI provides 48 Fast Ethernet access ports, while the discontinued WS-C3550-24-SMI provides 24. Both retain the standard software image and two GBIC Gigabit Ethernet uplinks. The 48-port configuration fits higher-density retained connections; the 24-port configuration fits a smaller access-port requirement without changing the uplink count.
The Catalyst 3550-48 uses GBIC transceivers in its two Gigabit Ethernet uplink slots, including WS-G5484 for 1000BASE-SX and WS-G5486 for 1000BASE-LX/LH. These are GBIC interfaces rather than SFP interfaces. Specify the transceiver PID against the existing fiber type and link requirement before completing the accessory order.
The Catalyst 3550 family supports GigaStack interconnection through WS-X3500-XL, with nine switches in a daisy-chain configuration sharing 1 Gbps bandwidth. Point-to-point connectivity provides 2 Gbps. This physical interconnection uses a GBIC position; browser-based CMS clustering is a separate management function and does not establish the same hardware connection.
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