Cisco WS-C3750X-24S-E Layer 3 Switch

The Cisco WS-C3750X-24S-E Layer 3 Switch is a cornerstone of enterprise campus networks, delivering high-performance fiber connectivity, scalable Layer 3 routing, and unparalleled reliability in a compact 1U form factor. As part of the Cisco Catalyst 3750-X family, this switch blends stackable architecture, energy efficiency, and ease of operation to meet the demands of mid-size to large deployments. It is designed to simplify growing networks through seamless stacking, powerful routing capabilities, and intelligent management features, all while maintaining robust security and consistent QoS for voice, video, and data traffic.

• The switch provides enterprise-grade Layer 3 routing capabilities, enabling efficient inter-VLAN routing, static and dynamic routing protocols, and IPv4/IPv6 support. With features like VRF-lite, route maps, and ACL-based traffic control, you gain precise, scalable control over network paths, improved traffic isolation, and simplified management of complex campus and data-center topologies. This makes it ideal for distribution layers and core-distribution edge deployments where fast, predictable routing is critical.
• Stacking and StackPower give you a future-ready, resilient topology. Cisco StackWise allows multiple units to operate as a single logical switch, while StackPower enables shared power resources across the stack. This combination simplifies administration, reduces power-related bottlenecks, and improves uptime by enabling redundant power configurations and streamlined capacity management across all stack members.
• Performance and reliability are at the heart of this model. The catalyst switches in the 3750-X family deliver a non-blocking, high-throughput architecture that efficiently handles mixed workloads—LAN access, server access, and multi-service applications. With robust buffering, QoS-aware forwarding, and consistent latency, it supports demanding applications like IP telephony, video conferencing, and large-scale data transfers across campus networks.
• Security and policy-driven controls are built in. The WS-C3750X-24S-E supports comprehensive security features, including ACLs for traffic segmentation, 802.1X port access control, DHCP snooping, IP source guard, and dynamic ARP inspection. Integrated QoS policies, traffic shaping, and priority queuing ensure critical applications receive the bandwidth and low latency they require, while role-based access and secure management protocols minimize risk.
• Energy efficiency and management ease complete the package. The switch leverages energy-aware designs (EnergyWise-ready) and intelligent power management to reduce consumption in idle or low-traffic periods. Cisco’s streamlined management tools, such as IOS-based configuration, SNMP, SSH, and web-based capabilities, simplify ongoing administration, firmware updates, and inventory control—minimizing operational overhead and supporting sustainable IT practices.

Technical Details of Cisco WS-C3750X-24S-E Layer 3 Switch

• Model: WS-C3750X-24S-E
• Series: Cisco Catalyst 3750-X
• Port Configuration: 24 SFP-based ports for fiber connectivity, enabling flexible, high-density uplinks and server connections
• Layer: Layer 3 capable switch with routing, switching, and multicast capabilities for scalable network design
• Stacking: Supports Cisco StackWise stacking; enables a single management plane across multiple units for simplified operations
• Power: 1U rack-mountable unit with standard 100-240V AC power; StackPower support allows shared power resources within a stack for efficiency and redundancy
• Management: Cisco IOS Software with IPv4/IPv6 routing, SNMP, SSH, RADIUS, TACACS+, and role-based access; supports IPv6 management and advanced QoS policies
• Security: ACLs, 802.1X port access control, DHCP snooping, IP source guard, dynamic ARP inspection, and private VLAN support for network segmentation
• Quality of Service: Advanced QoS features with traffic prioritization for voice, video, and data, ensuring predictable performance for priority applications
• Energy Efficiency: EnergyWise-compatible design to reduce energy use during low-activity periods and overall data-center footprint
• Form Factor: 1U rack-mountable chassis suitable for standard data-center and campus network deployments

How to install Cisco WS-C3750X-24S-E Layer 3 Switch

• Plan your deployment by mapping IP addressing, VLANs, routing domains, and stacking topology. Decide whether you will use StackWise alone or in combination with StackPower for shared power across the stack.
• Install the switch in a properly ventilated rack with adequate clearance for airflow. Secure the unit with rack screws and ensure that cabled connections won’t impede airflow or maintenance access.
• Connect stacking cables to the StackWise connectors on each switch in the intended stack. Verify that all stack members recognize the stack master and establish a stable control plane across the stack.
• Attach fiber cables to the 24 SFP ports according to your logical design, labeling ports for easy reference during deployment and future troubleshooting. If you are using uplinks to a core or distribution layer, ensure your fiber type, transceivers, and wavelength match network requirements.
• Power on the chassis and access the management console through the console port or an out-of-band management interface. Enter initial configuration steps, including hostname, management IP address, and enable password. Establish the proper stack configuration and designate a master switch if you are using StackWise in standalone stacks.
• Configure Layer 3 routing by enabling ip routing, creating VLAN interfaces, and configuring routing protocols such as OSPF or EIGRP as required by your network design. Define static routes where appropriate for known paths and implement route redistribution as needed for connectivity to other routing domains.
• Set up security and QoS policies. Implement 802.1X authentication, access control lists for traffic filtering, DHCP snooping, and IP source guard to protect against spoofing. Create QoS policies that prioritize voice and video traffic and apply these policies to appropriate interfaces and VLANs.
• Verify connectivity and performance. Use ping and traceroute to validate reachability between core, distribution, and edge devices. Test inter-VLAN routing, routing protocol convergence, and throughput across the stack. Monitor power and temperature to ensure the StackPower and thermal design operate within expected parameters.
• Document the configuration, save startup-config, and implement a change-management process. Keep firmware up to date with Cisco-recommended releases to benefit from security patches, feature enhancements, and stability improvements.

Frequently asked questions

• What is the Cisco WS-C3750X-24S-E? It is a Layer 3 switch in the Cisco Catalyst 3750-X family, designed for enterprise networks, offering 24 SFP-based fiber ports, stacking capabilities, and advanced routing and security features for scalable campus and data-center deployments.
• Does this model support PoE? The WS-C3750X-24S-E is typically non-PoE. If PoE support is required, consider other variants in the Catalyst 3750-X family that include PoE or PoE+ capabilities.
• How many devices can be stacked? Cisco StackWise allows multiple switches to operate as a single unit in a stack. In typical configurations, up to nine switches can be stacked to extend port density and simplify management.
• Is IPv6 supported? Yes. The Cisco Catalyst 3750-X series supports IPv6 routing and IPv6 management, enabling modern network designs alongside IPv4.
• What management options are available? Management is provided via Cisco IOS Software with SSH, SNMP, RADIUS, TACACS+, and web-based management. The platform also supports Cisco Smartports templates for streamlined configuration and deployment.