Cisco Catalyst C9300-48UN Ethernet Switch

Unlock the full potential of modern enterprise networks with the Cisco Catalyst 9300-48UN Ethernet Switch. Built to anchor secure, scalable, and policy-driven campus networks, this switch delivers unparalleled performance for security, IoT, mobility, and cloud integration. As the cornerstone of Cisco’s lead stackable switching platform, the Catalyst 9300 family blends resilient hardware with cutting-edge IOS XE software, enabling intelligent automation, consistent policy enforcement, and reliable connectivity across your organization. Whether you’re deploying a single building or a multi-site campus, the C9300-48UN is engineered to simplify operations while accelerating your digital initiatives.

• Superior performance and scalability: The Catalyst 9300-48UN is designed to handle demanding workloads with high-throughput assurance. It supports robust quality of service (QoS), efficient multicast handling, and fast, predictable switching that keeps latency at bay as traffic, devices, and applications scale. Its stackable architecture lets you consolidate multiple switches into a single logical unit, simplifying management and enabling seamless growth without revamping the network topology.
• End-to-end security at the edge: This switch is built with Cisco’s security-first approach, including trusted boot, secure Firmware integrity checks, and policy-driven access controls. Integrated security features help isolate guest devices, protect critical assets, and enforce segmentation across campus networks. With dynamic policy enforcement and threat intelligence, the Catalyst 9300-48UN helps reduce risk while maintaining user productivity.
• IoT and mobility ready: Designed to support a broad range of IoT devices, cameras, IP phones, and wireless access points, the C9300-48UN provides reliable power delivery and robust connectivity for diverse endpoints. The switch’s architecture enables rapid provisioning of new devices and consistent performance for mobile users, delivering a smoother experience in classrooms, conference centers, retail locations, and office floors.
• Hybrid cloud integration and automation: The Catalyst 9300 series embraces Cisco DNA Center and cloud-centric management, enabling centralized policy, telemetry, and automation across campus deployments. This integration accelerates rollout of new services, simplifies day-to-day operations, and enables data-driven decision making through actionable insights and analytics.
• Reliability, efficiency, and quiet operation: Built for 24/7 operation, the 9300-48UN emphasizes reliability with strong chassis design, advanced cooling, and energy-efficient features. Its power management and efficiency reduce total cost of ownership while delivering continuous service for critical business functions.

Technical Details of Cisco Catalyst C9300-48UN Ethernet Switch

• Model: Cisco Catalyst C9300-48UN Ethernet Switch
• Series: Catalyst 9300 family
• Port configuration: 48 fixed Ethernet ports with PoE/PoE+ capability (availability may vary by SKU)
• Uplink/stacking: Stackable design with scalable uplink options (up to multiple units as a single logical switch); supports high-speed uplinks for aggregation and uplink resilience
• Software: Cisco IOS XE with integrated security, automation, and programmability features

How to Install Cisco Catalyst C9300-48UN Ethernet Switch

• Prepare and verify: Inspect the shipment for damage, verify the model and SKU, and ensure you have the required rack space, power supply, and cables. Review the data sheet for supported features, including PoE options and uplink configurations.
• Rack and connect: Secure the switch in a standard 19-inch rack, connect the power leads, and route cables cleanly to prevent airflow obstruction. If stacking, plan the stack cable arrangement according to Cisco guidelines and ensure all units are accessible for console access during initial setup.
• Initial access: Connect a workstation to the console port and establish a console session. Power on the switch and perform the initial boot sequence to verify hardware integrity and basic boot messages. Confirm that the device reports the expected model and software version.
• Basic configuration: Enter the device in privileged EXEC mode, configure hostname, management IP, and login credentials. Enable essential features such as SSH for secure remote access, NTP for time synchronization, and basic VLANs to segregate traffic by department or function.
• Security and policy setup: Implement role-based access control, enable device trust and secure boot, and create security policies for user and device onboarding. Define network access control policies to segment devices and enforce appropriate permissions across the network edge.
• PoE and QoS configuration: If your SKU includes PoE/PoE+, configure power budgets for endpoints like cameras, access points, and VoIP devices. Set up QoS to prioritize latency-sensitive applications such as real-time collaboration, voice, and video, ensuring consistent performance across the network.
• Connectivity and services: Connect end devices to the 48 Ethernet ports and verify link status. Program VLANs, trunking, and routing policies as required. If you’re integrating with a wireless fabric or cloud management, configure the necessary controllers, management domains, and telemetry settings for centralized visibility.
• Validation and monitoring: Use show commands to verify port status, VLAN membership, and stack health. Monitor performance and security events through Cisco DNA Center or your preferred network management tool, and adjust configurations as traffic patterns evolve.

Frequently asked questions

• What is the Cisco Catalyst C9300-48UN Ethernet Switch used for? It is an enterprise-grade, stackable access switch designed to anchor secure campus networks, enable IoT and mobility deployments, and integrate with cloud- and automation-driven IT environments.
• How many ports does it have and are they PoE-enabled? The model features 48 fixed Ethernet ports. PoE/PoE+ capability is available on certain SKUs, making it suitable for powering devices such as cameras, VoIP phones, and wireless access points without separate power supplies.
• Is this switch stackable? Yes. The Catalyst 9300 series is built for stacking, allowing multiple switches to operate as a single logical unit, simplifying management and enabling scalable growth across campuses or buildings.
• What software runs on the C9300-48UN? It runs Cisco IOS XE, offering advanced security, automation, and programmability features that support policy-based management, telemetry, and integration with Cisco DNA Center and cloud-based management.
• What deployment scenarios is this switch best suited for? It’s ideal for enterprise campus access layers, edge data centers, and distributions where security, IoT device connectivity, high performance, and centralized management are critical.
• How do I begin configuring for security and IoT integration? Start with secure administration (SSH, strong credentials), enable Trust Anchor and secure boot, define network access controls, segment IoT traffic with VLANs, and enable QoS and monitoring to ensure reliable service for all endpoints.