Cisco Catalyst C9300L-48P-4X Layer 3 Switch

The Cisco Catalyst C9300L-48P-4X is a flagship member of the Catalyst 9300 family, engineered to power modern enterprise networks in a hybrid world. As part of Cisco’s Catalyst 9000 series, this switch delivers end-to-end security, unified access, and scalable performance for campus, small to mid-size business, and branch deployments. It is designed to be stackable, resilient, and easy to manage, offering robust Power over Ethernet (PoE) capabilities to support IP phones, cameras, wireless access points, and a growing array of IoT devices. Built on Cisco IOS XE software, the C9300L-48P-4X provides a rich set of Layer 3 routing features, advanced QoS, secure access controls, and automated provisioning that helps IT teams deploy, monitor, and adapt networks quickly in a changing business environment.

With a focus on simplicity and reliability, this switch offers a powerful mix of fixed PoE ports and high-speed uplinks, enabling seamless edge-to-core connectivity while preserving room for growth. The C9300L-48P-4X supports stackable growth, micro-segmented security, and centralized management tools that make it a natural choice for organizations pursuing a modern, cloud-friendly campus network. Whether you’re upgrading an aging top-of-rack switch, extending access-layer capabilities, or building scalable campus cores, this model delivers the performance, flexibility, and energy efficiency required for today’s hybrid work model, remote sites, and on-premises applications.

Key capabilities include high-density PoE/PoE+ ports for powering devices at the edge, four 10G uplinks for fast aggregation, and a robust IOS XE operating system that unifies network policy, security, and routing. Such features translate to tangible benefits: faster device deployment, stronger network security, improved application performance, and simplified operations through automation and analytics. In short, the Cisco Catalyst C9300L-48P-4X is designed to future-proof your enterprise access layer while delivering the reliability and control your IT team needs to support a flexible, distributed workforce.

• High-density PoE+ ports for edge devices: 48 PoE+ Ethernet ports simplify campus deployments by powering IP phones, cameras, wireless access points, and other PoE-enabled devices directly from the switch, reducing cable clutter and lowering total cost of ownership.
• Flexible 10G uplinks for scalable connectivity: Four 10G SFP+ uplinks provide fast, scalable connections to distribution or core layers, enabling reliable aggregation and future-proofing for higher bandwidth needs.
• Advanced Layer 3 routing and security: Built-in routing capabilities (IPv4 and IPv6) with static routing and dynamic routing protocols, plus robust security features such as ACLs, 802.1X, and threat mitigation to safeguard edge access.
• Resilient design for continuous operations: Stackable architecture with optional redundant power and hot-swappable fans, plus Cisco’s energy-efficient design to balance performance with lower operating costs.
• Unified management and analytics: Runs Cisco IOS XE with comprehensive management options, enabling policy-based automation, centralized administration with Cisco DNA Center, and seamless integration with Prime Infrastructure for lifecycle management.

Technical Details of Cisco Catalyst C9300L-48P-4X Layer 3 Switch

• Model: Cisco Catalyst C9300L-48P-4X
• Family: Catalyst 9300 Layer 3 Switch (L-series)
• Ports: 48 x PoE+ Ethernet ports (1G) for edge access
• Uplinks: 4 x 10G SFP+ uplink ports for distribution/core connectivity
• PoE Budget: Up to 740 W (configurable, supporting multiple PoE devices)
• Routing: Layer 3 with IPv4 and IPv6, static routing and dynamic routing protocols (OSPF, EIGRP, BGP) for scalable enterprise routing
• Switching Capacity: High-performance fixed platform with Cisco IOS XE, designed for efficient campus access and aggregation
• Forwarding Rate: Enterprise-grade data plane capable of handling demanding workloads and QoS policies
• Power: 100–240V AC input with options for redundant power supplies and efficient cooling
• Management: Cisco IOS XE with CLI, plus integration with Cisco DNA Center and Prime Infrastructure for centralized management
• Security: Built-in security features including ACLs, 802.1X, DHCP snooping, Dynamic ARP Inspection, IP source guard, and robust access controls
• Form Factor: Fixed chassis design optimized for rack deployment in campus and branch environments

how to install Cisco Catalyst C9300L-48P-4X Layer 3 Switch

Installing the Cisco Catalyst C9300L-48P-4X begins with planning your placement in a standard 19-inch rack and confirming adequate cooling and ventilation. Mount the switch securely, connect the power supply, and ensure that all PoE devices wired to the 48 Ethernet ports are within budget and compliant with safety requirements. Attach the four 10G SFP+ uplinks to your distribution or core devices to establish the desired topology, whether it’s a spine-leaf arrangement or traditional access-layer aggregation. Connect a management workstation to the switch’s console port or an out-of-band management network to perform initial configuration. Power on the unit and verify the boot sequence. Access the device via the CLI to set a management IP address, hostname, and basic security policies. Enable Layer 3 routing as needed and configure routing protocols (OSPF, EIGRP, or BGP) to suit your network design. Create and assign VLANs for different departments or devices, configure QoS policies to prioritize latency-sensitive traffic, and apply access control lists to secure device connections. If you plan to deploy stacking, enable StackWise-160 (or the appropriate stacking mode) and add additional units to form a single management and forwarding domain. Load the latest Cisco IOS XE image to ensure you have current features, security updates, and bug fixes. Validate PoE operation by connecting representative PoE devices and confirming power delivery, monitoring device temperatures, and ensuring power budgets are not exceeded. Finally, implement ongoing monitoring and automation through Cisco DNA Center or Prime Infrastructure to streamline policy enforcement, firmware updates, and device health checks.

Frequently asked questions

• Q: Is the C9300L-48P-4X suitable for campus edge deployments?
• A: Yes. Its 48 PoE+ ports, four 10G uplinks, and Layer 3 capabilities are ideal for campus edge access, VLAN segmentation, and secure device onboarding in a distributed environment.
• Q: Does this switch support stacking?
• A: Yes. The Catalyst 9300L series is designed to be stackable, enabling centralized management and seamless scalability across multiple units.
• Q: What kind of security features are included?
• A: It includes ACLs, 802.1X, DHCP snooping, Dynamic ARP Inspection, IP source guard, and other security mechanisms to protect endpoints and control traffic flow.
• Q: Can I manage it with Cisco DNA Center?
• A: Absolutely. The switch runs Cisco IOS XE and is designed to integrate with Cisco DNA Center for centralized policy, automation, and analytics, simplifying ongoing operations.