The Cisco Catalyst WS-C3750X-48P-S is a high-performance stackable enterprise switch designed for organizations that need 48 Gigabit PoE+ ports, scalable Layer 3 networking, and resilient stack-based architecture. It is widely deployed in enterprise campuses, corporate LANs, VoIP systems, wireless networks, and IP surveillance environments where reliable power delivery and network uptime are essential.

This model is part of the Cisco Catalyst 3750-X Series, known for StackWise Plus stacking, StackPower redundancy, modular uplinks, and Cisco IOS enterprise features.

Overview

The WS-C3750X-48P-S is built for access-layer switching with power over Ethernet support, enabling it to connect and power multiple endpoint devices simultaneously.

It is commonly used in environments requiring:

• High port density
• PoE+ power delivery
• Network redundancy
• Scalable stacking architecture

Key Features

Power & Connectivity

• 48 × Gigabit Ethernet PoE+ ports (IEEE 802.3at)
• Supports IP phones, wireless access points, and IP cameras
• High-capacity PoE power budget (PSU dependent)

Performance

• Switching capacity: up to 160 Gbps
• Forwarding rate: ~101.2 Mpps
• Hardware-based forwarding for low latency

Scalability & Redundancy

• StackWise Plus technology (up to multiple switch stacking)
• StackPower for shared power redundancy
• Modular uplink support (1G / 10G SFP/SFP+)

Security Features

• Access Control Lists (ACLs)
• 802.1X port-based authentication
• DHCP snooping
• MACsec encryption support

Technical Specifications

Use Cases

• Enterprise campus access layer switching
• VoIP (IP telephony) infrastructure
• Wireless access point deployments
• CCTV / IP surveillance networks
• Multi-floor corporate LANs
• VLAN-segmented enterprise environments

External References

• Cisco Catalyst 3750-X Series Overview
  https://www.cisco.com/c/en/us/products/switches/catalyst-3750-x-series-switches.html
• Cisco Switching Portfolio
  https://www.cisco.com/c/en/us/products/switches/index.html
• IEEE PoE Standard (802.3at)
  https://standards.ieee.org/standard/802_3at-2009.html

Maintenance & Support

Preventive Maintenance

• IOS software updates and patching
• PoE load monitoring per port
• Hardware cleaning and airflow inspection
• Power supply redundancy checks
• StackWise synchronization validation

Monitoring & Operations

• SNMP-based performance monitoring
• Syslog event tracking
• Interface error and bandwidth analysis
• VLAN configuration audits
• CPU and memory utilization tracking

Lifecycle Support

• Replacement of PSU, fans, and modules
• Stack cable maintenance
• Hardware upgrade planning
• Migration toward Cisco Catalyst 9300 series

SLA (Service Level Agreement)

• Incident response: 1–4 hours (critical environments)
• Hardware replacement: Next Business Day (NBD)
• Remote troubleshooting: Layer 1–3 support
• Configuration support: VLAN, routing, stacking
• Firmware upgrades: Cisco IOS updates
• Optional on-site support available
• Preventive maintenance scheduling

FAQs

1. What is the main purpose of this switch?

It is used as an enterprise access switch providing PoE+ power and high-density connectivity for end devices.

2. Does it support stacking?

Yes, it supports StackWise Plus, allowing multiple switches to operate as a single system.

3. Can it run Layer 3 routing?

Yes, Layer 3 features are available depending on Cisco IOS license (IP Base or IP Services).

4. What devices can it power?

It can power IP phones, wireless access points, IP cameras, and other PoE-enabled devices.

5. Is it still suitable for modern networks?

It is still used in existing enterprise infrastructures, while newer deployments prefer Cisco Catalyst 9300 series.

6. What makes it different from 48PF-S?

The 48P-S has a lower PoE power design compared to PF models, making it suitable for moderate PoE environments.