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Name:
WS-C3750X-48U-L
- Description:
- CATALYST 3750X 48PORT 10/100/1000 ENET STACKABLE
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3 Year Extended Warranty
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WS-C3750X-48U-L Overview
WS-C3750X-48U-L is a stackable enterprise-class switch engineered with a robust, modular architecture that delivers high performance, extensive scalability, and flexible connectivity for evolving network demands. It features 48 fixed 10/100/1000 Ethernet ports combined with 4 fixed 1G SFP uplink interfaces, optimized for compact rack-mount deployments and enhanced stacking via Cisco FlexStack-Plus technology.
WS-C3750X-48U-L supports both Layer 2 switching and Layer 3 routing with the IP Lite IOS, providing efficient traffic management and versatile network design options. Its integrated AC power supply, non-PoE operation, and high switching capacity make it ideally suited for campus LANs, branch offices, and mid-sized enterprise environments.
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WS-C3750X-48U-L Specifications
| Product Type | Switch |
| Power Source | AC Power Supply |
| Layer Supported | Layer 2 / Layer 3 |
| Form Factor | Rack-mount |
| Power Consumption | 240W |
| Number Of Ethernet Ports | 24–48 Ports |
| Number Of Downlink Ports | 4 Ports |
| Manageable | Managed |
| Ethernet Technology | 10/100/1000 |
| Media Type Supported | Twisted Pair / Fiber / Combo |
| Redundant Power Supply Supported | No |
| Manufacturer Part Number | WS-C3750X-48U-L |
| Uplink Configuration | 1G |
| IOS | IP Lite |
| POE Support | Non POE |
| SFP Ports | 4 SFP Ports |
| Memory | 256 MB |
| Rack Units | 1 RU |
| Interface Ports | 10/100/1000 |
| Port/Expansion Slot Details | 48 fixed 10/100/1000 Ethernet ports with 4 fixed 1G SFP uplink interfaces |
| Flash Memory | 64 MB |
| Switching Capacity | 176 Gbps |
| Switching Capacity With Stacking | 160 Gbps |
| Product Name | Cisco Catalyst 3750-X 48-Port Uplink Switch (WS-C3750X-48U-L) |
| Height | 1.73 inches |
| Width | 17.5 inches |
| Depth | 18.0 inches |
| Weight | 31.8 lbs |
WS-C3750X-48U-L Use Case
Campus LAN Aggregation & PoE+ Delivery for Unified Communications
In a large enterprise wiring closet, the WS-C3750X-48U-L stackable switch aggregates 48 10/100/1000 PoE+ ports to power VoIP phones and wireless access points. By leveraging StackWise™ technology and a 740W PoE+ budget per switch, IT teams achieve sub-millisecond failover and centralized power management, resulting in uninterrupted voice/video collaboration and simplified infrastructure scaling.
High-Density Top-of-Rack for Virtualized Data Center
Deployed at the top of a 42U rack, the WS-C3750X-48U-L delivers 48 Gigabit Ethernet uplinks to hypervisor clusters and SAN gateways. Its non-blocking 176 Gbps switching fabric and hot-swappable SFP uplinks ensure low-latency traffic flow and seamless expansion. Outcome: streamlined VM migration, predictable East-West throughput, and reduced single-point failure risk in virtualized environments.
Secure IoT Edge Hub in Smart Building Environments
In a multi-tenant smart facility, the WS-C3750X-48U-L aggregates IP cameras, environmental sensors and access controllers over 48 PoE+ ports. Advanced QoS, Dynamic ARP Inspection and flexible VLAN segmentation isolate critical building systems. Benefit: centralized power delivery, real-time device monitoring, and hardened network security for scalable IoT deployments.
Quality Certifications
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Product Comparison Table
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| Depth | 12.9 inches | 18.0 inches | 11.8 inches | 15.5 inches | 16.1 inches |
| Ethernet Technology | 10/100 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 64 MB | 64 MB | 128 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.73 inches | 1.73 inches | 1.73 inches | 1.73 inches |
| Interface Ports | 10/100 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| IOS | LAN Base | IP Lite | LAN Base | LAN Base | LAN Base |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | WS-C3750X-24T-L | WS-C3750X-48U-L | WS-C3750X-24P-S | WS-C3750X-48T-S | WS-C3750X-48T-L |
| Media Type Supported | Twisted Pair | Twisted Pair / Fiber / Combo | Twisted Pair / Fiber / Combo | Combo | Twisted Pair |
| Memory | 256 MB | 256 MB | 512 MB | 512 MB | 512 MB |
| Number of Downlink Ports | 24 Ports | 4 Ports | 24 Ports | N/A | 48 Ports |
| Number of Ethernet Ports | 12–24 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | Non POE | Non POE | POE+ | Non POE | Non POE |
| Port/Expansion Slot Details | 24 Ethernet 10/100 ports with 4 fixed 1G SFP uplink ports | 48 fixed 10/100/1000 Ethernet ports with 4 fixed 1G SFP uplink interfaces | 24 PoE+ ports and 4 SFP uplink ports | 48 x 10/100/1000 Ethernet ports, 4 x 1G SFP uplink ports | 48 Ethernet Ports, 4 SFP Uplink Ports |
| Power Consumption | N/A | 240W | 365 W | 235W | 350 W |
| Power Source | AC Power Supply / N/A | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Cisco Catalyst 3750X-24T-L | Cisco Catalyst 3750-X 48-Port Uplink Switch (WS-C3750X-48U-L) | Cisco Catalyst 3750X-24 Power over Ethernet Switch | Cisco Catalyst 3750-X 48-Port 10/100/1000 Ethernet Switch with LAN Base Software | Cisco Catalyst 3750X 48-Port 10/100/1000 Ethernet Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | No | Yes | No | No |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 128 Gbps | 176 Gbps | 128 Gbps | 176 Gbps | 176 Gbps |
| Switching Capacity with Stacking | 480 Gbps | 160 Gbps | 160 Gbps | 480 Gbps | 480 Gbps |
| Uplink Configuration | 1G | 1G | 1G | 1G | 1G |
| Weight | 25.4 lbs | 31.8 lbs | 26 lbs | 25 lbs | 29.3 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.2 inches |
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Questions & Answers
Q
What is the Cisco Catalyst WS-C3750X-48U-L?
A
The Catalyst WS-C3750X-48U-L is a 48-port Gigabit Ethernet stackable switch with LAN Base software for enterprise access-layer deployments.
Q
How many Gigabit Ethernet ports and uplinks does the WS-C3750X-48U-L offer?
A
It includes 48 10/100/1000Mbps RJ-45 ports and four 1G SFP uplink ports for fiber or copper connectivity.
Q
Does the Catalyst 3750X 48U support PoE or PoE+?
A
No. The WS-C3750X-48U-L does not support PoE; use the WS-C3750X-48P-L series for power over Ethernet.
Q
What stacking technology does the WS-C3750X-48U-L use?
A
It uses Cisco StackWise-Plus, allowing up to nine switches to form a single logical stack with unified management.
Q
What is the maximum stacking bandwidth of the Catalyst 3750X 48U?
A
StackWise-Plus delivers up to 64 Gbps of full-duplex stacking bandwidth per switch stack.
Q
Which Cisco IOS image ships on the WS-C3750X-48U-L?
A
It ships with the LAN Base IOS image, providing Layer 2 switching, static routing, VLAN, and basic multicast services.
Q
Can I upgrade the WS-C3750X-48U-L to advanced IP services?
A
Yes. You can license-upgrade to IP Base or IP Services IOS to enable advanced routing, multicast, and security features.
Q
What switching capacity and forwarding rate does the WS-C3750X-48U-L provide?
A
It delivers 176 Gbps of switching capacity and a forwarding rate of up to 130.95 Mpps.
Q
Does the WS-C3750X-48U-L support IPv6 routing?
A
Yes. With the appropriate IOS license, it supports IPv6 forwarding and basic IPv6 routing protocols.
Q
How many VLANs can the Catalyst 3750X 48U handle?
A
It supports up to 4,094 VLANs for robust network segmentation and isolation.
Q
Does the WS-C3750X-48U-L support QoS?
A
Yes. It supports class-based QoS, ACLs, and policy-based shaping for precise traffic prioritization.
Q
Which power supplies are compatible with the Catalyst 3750X 48U?
A
It includes an internal 460W PSU and supports optional redundant PWR-C2-550WAC or PWR-C2-750WAC units.
Q
What warranty and support options are available for the WS-C3750X-48U-L?
A
Cisco offers a limited lifetime hardware warranty; SMARTnet provides expedited replacement and software updates.
Q
What are the typical use cases for the Catalyst 3750X 48U stackable switch?
A
Ideal for campus access, branch offices, and enterprise edge deployments requiring scalable gigabit stacking.
Q
How can I configure security features on the WS-C3750X-48U-L?
A
It supports 802.1X, RADIUS/TACACS+, Dynamic ARP Inspection, and DHCP snooping to enforce network access control.
Q
What uplink modules are supported by the Catalyst 3750X 48U?
A
Compatible transceivers include Cisco 1G/10G SFP/SFP+ modules such as GLC-LH-SM, GLC-SX-MMD, and X2-10GB-SR.
Q
What are the physical dimensions and power consumption of the WS-C3750X-48U-L?
A
Chassis dimensions are 1.75H x 17.5W x 18.1D inches; typical power draw is ~100W idle and up to 220W under full load.
