WS-C3750G-24PS-S Cisco Catalyst 3750 24 Ports Ethernet Switch

Cisco WS-C3750G-24PS-S 24-Port Catalyst Switch Overview

The Cisco WS-C3750G-24PS-S is a high-performance 24-port Gigabit Ethernet switch, engineered for seamless network connectivity in enterprise and data center environments. With robust expansion capabilities and reliable power options, it ensures consistent performance and scalability.

Key Features of Cisco WS-C3750G-24PS-S

• Manufacturer: Cisco
• Part Number: WS-C3750G-24PS-S
• Product Type: Network Switch
• Ports: 24 Gigabit Ethernet connections for high-speed networking

Technical Specifications

• Total Network Ports: 24 Gigabit Ethernet
• Expansion Slots: 4 SFP (Small Form-Factor Pluggable) slots for flexible network growth
• Supported Media Types: Twisted Pair cabling
• Cable Standards: Category 5 or higher
• Ethernet Technology: Gigabit Ethernet for fast and reliable data transfer
• Network Compatibility: Supports 10Base-T, 10/100/1000Base-T connections

Expansion and Scalability

• Number of Expansion Slots: 4 SFP slots
• Flexible network expansion for growing infrastructures
• Compatible with additional modules for advanced connectivity

Power and Energy Management

• Input Voltage: Supports both 110V AC and 220V AC
• Power Source: Reliable internal Power Supply Unit (PSU)
• Redundant Power Supply: Ensures uninterrupted network operation

Memory and Performance

• Standard Memory: 128 MB DRAM for smooth multitasking
• Flash Memory: 32 MB for firmware and configuration storage
• Memory Technology: DRAM (Dynamic Random Access Memory) enhances processing speed

Cisco WS-C3750G-24PS-S Catalyst 3750 Series Ethernet Switch

The Cisco WS-C3750G-24PS-S is part of the renowned Catalyst 3750 series, a cornerstone in enterprise-grade networking solutions. Known for its reliability and advanced performance, this 24-port Ethernet switch provides Power over Ethernet (PoE) capabilities, ensuring seamless connectivity for various network devices. Its compact design and enhanced feature set make it a popular choice for businesses looking to integrate high-speed, scalable, and manageable network infrastructure. The WS-C3750G-24PS-S combines Layer 2 and Layer 3 functionalities, allowing for efficient data management across multiple network layers while supporting quality of service (QoS) policies for optimized traffic prioritization.

Key Features of the Catalyst 3750 Series

The WS-C3750G-24PS-S offers a comprehensive suite of features tailored to modern network demands. With 24 Ethernet ports, it provides ample connectivity for workstations, IP phones, and wireless access points. The switch supports advanced PoE+ standards, delivering up to 15.4W per port to power connected devices without requiring additional power adapters. Layer 3 routing capabilities are fully integrated, allowing for static routing, Routing Information Protocol (RIP), and Open Shortest Path First (OSPF) routing. Additionally, the switch offers high-density Gigabit Ethernet support, ensuring low-latency connections for high-performance applications.

Advanced PoE Capabilities

One of the standout aspects of the WS-C3750G-24PS-S is its Power over Ethernet functionality. By providing consistent and reliable power to connected devices, the switch simplifies network design and reduces clutter by eliminating the need for separate power sources for devices such as IP phones, surveillance cameras, and wireless access points. PoE management allows network administrators to monitor and control power allocation per port, ensuring energy efficiency and reliability. This feature is especially critical for organizations aiming to deploy a converged network where data and power are transmitted through a single infrastructure.

PoE Allocation and Management

The switch provides intelligent PoE allocation, automatically detecting the power requirements of connected devices and distributing power efficiently. Each port is capable of dynamic power negotiation, allowing devices to draw only the power they require while protecting the overall system from overloading. Administrators can configure thresholds for power delivery, enabling energy-saving modes during low-demand periods. This smart PoE system also supports troubleshooting capabilities, allowing network engineers to quickly identify and resolve power-related issues without disrupting network operations.

Layer 3 Routing and Scalability

The WS-C3750G-24PS-S supports advanced Layer 3 routing functions, making it suitable for mid-sized enterprise networks and branch offices. Static routing allows administrators to configure precise traffic paths, while dynamic routing protocols such as RIP and OSPF ensure efficient route optimization and resilience in larger networks. The integrated routing functionality eliminates the need for separate routers in certain network segments, reducing hardware costs and simplifying network management. Additionally, the switch can be stacked using Cisco’s StackWise technology, allowing up to nine units to operate as a single logical switch, which increases scalability, redundancy, and overall throughput.

StackWise Technology

StackWise technology is a critical component for enterprises seeking highly available and resilient networks. By interconnecting multiple WS-C3750G-24PS-S switches in a stack, administrators gain centralized management and simplified configuration while benefiting from increased bandwidth. The stack operates as a single unit with unified configuration and management interfaces, reducing operational complexity and minimizing downtime during maintenance or upgrades. StackWise also provides redundant paths within the stack, ensuring that network traffic continues to flow even if a single switch in the stack fails.

Performance and Reliability

Performance is a hallmark of the Catalyst 3750 series. The WS-C3750G-24PS-S delivers wire-speed switching across all ports, providing consistent throughput for bandwidth-intensive applications. The switch supports advanced QoS policies, allowing prioritization of voice, video, and mission-critical data, which ensures that latency-sensitive applications operate smoothly. Cisco’s robust operating system, IOS, guarantees reliable uptime with features like hot-swappable power supplies, fan modules, and redundant stacking capabilities. The 3750 series is designed for enterprise environments that demand high availability and minimal service disruption.

Quality of Service (QoS)

QoS is essential for maintaining optimal network performance, particularly in environments where voice and video traffic coexist with standard data traffic. The WS-C3750G-24PS-S supports multiple QoS mechanisms, including classification, policing, and marking, which allow administrators to assign priority levels to different types of network traffic. Voice traffic, for example, can be given the highest priority to prevent delays or jitter, while less critical data transfers are processed with lower priority. These features make the switch highly suitable for unified communications deployments and video conferencing systems.

Advanced Security Features

Security is integrated into the WS-C3750G-24PS-S at multiple levels. It supports IEEE 802.1X authentication, ensuring that only authorized devices can connect to the network. Port security allows network administrators to limit the number of devices per port and enforce MAC address-based restrictions. The switch also integrates Access Control Lists (ACLs) for filtering traffic based on IP addresses or protocols, preventing unauthorized access and mitigating potential attacks. Combined with Secure Shell (SSH) and Secure Sockets Layer (SSL) support for encrypted management, the switch provides comprehensive protection for enterprise networks.

Environmental and Physical Specifications

The WS-C3750G-24PS-S is engineered for durability and efficiency. Its compact 1U rack-mountable design fits into standard data center racks, saving space without compromising performance. The switch operates efficiently in a typical data center environment, with dual redundant power supplies and hot-swappable fans that provide continuous operation under heavy load conditions. Operating temperature ranges and humidity tolerances make it suitable for diverse office and industrial environments. The rugged design ensures long-term reliability, reducing the total cost of ownership and minimizing downtime caused by hardware failures.

Energy Efficiency

Cisco’s EnergyWise technology and intelligent power management features contribute to reduced energy consumption. By automatically adjusting power allocation based on connected device requirements, the WS-C3750G-24PS-S minimizes wasted energy. PoE scheduling further allows administrators to power down unused ports during off-hours, contributing to energy savings and lowering operational costs. This makes the switch an environmentally friendly and cost-effective choice for enterprises seeking sustainable networking solutions.

Rack Mounting and Physical Installation

The 1U form factor allows the WS-C3750G-24PS-S to be easily installed in standard 19-inch racks. It comes with mounting brackets and hardware for secure installation, and its modular power supply options provide flexibility in deployment. Cable management features ensure that structured wiring remains organized, preventing signal interference and maintaining optimal airflow. The switch’s compact size and thoughtful design allow network engineers to optimize rack space while maintaining ease of access for maintenance or upgrades.

Applications and Use Cases

The Cisco WS-C3750G-24PS-S is ideal for a wide range of applications across enterprise, education, healthcare, and industrial environments. In office networks, it efficiently supports VoIP phones, video conferencing systems, and wireless access points while ensuring high-speed data transmission for workstations and servers. Educational institutions benefit from its PoE capabilities to power interactive whiteboards and networked classroom technology. In healthcare settings, the switch can support IP surveillance cameras and medical devices requiring reliable connectivity. Industrial operations leverage its robust design and advanced security features for process automation and monitoring systems.

Branch Office Networking

For branch offices, the WS-C3750G-24PS-S provides a compact yet powerful solution capable of supporting critical applications without the need for additional routing devices. Its Layer 3 routing capabilities ensure efficient traffic management between different subnets, while PoE functionality powers essential devices like IP phones and wireless access points. Centralized management through StackWise technology allows IT teams to configure and monitor multiple branch switches from a single location, improving operational efficiency and reducing maintenance costs.

Data Center and Server Connectivity

In smaller data centers, the switch acts as a core or aggregation device, providing high-speed uplinks to distribution switches or servers. Its Gigabit Ethernet ports support large-scale data transfers, backup processes, and virtualization workloads without bottlenecks. Integrated QoS ensures that latency-sensitive traffic such as storage replication, database synchronization, and video streaming is prioritized over general data traffic. The switch’s redundancy features enhance data center reliability, ensuring continuous availability for critical business services.