Cisco Catalyst C9300-48UN-A 48-Port Multigigabit UPOE Switch

Overview of Cisco Catalyst C9300-48UN-A

The Cisco Catalyst C9300-48UN-A is a powerful enterprise-class access switch designed for modern campus networks that require high performance, advanced security, and scalable connectivity. As part of the Cisco Catalyst 9300 Series, this switch is built to support next-generation technologies including high-density wireless deployments, Internet of Things (IoT) devices, and high-speed access for enterprise applications.

The Cisco Catalyst C9300-48UN-A provides 48 multigigabit Ethernet ports that support speeds ranging from 100 Mbps up to 5 Gbps, allowing organizations to connect modern access points, high-performance devices, and advanced network infrastructure. With Universal Power over Ethernet (UPOE) support, the switch can deliver higher power levels to connected devices such as wireless access points, IP phones, security cameras, and IoT equipment.

48 Multigigabit Ports with UPOE Technology

The Cisco Catalyst C9300-48UN-A includes 48 multigigabit RJ-45 Ethernet ports capable of delivering flexible speeds of 100M, 1G, 2.5G, and 5G per port. This allows the switch to support modern wireless access points that require higher bandwidth than traditional Gigabit Ethernet.

The switch also supports Cisco Universal Power over Ethernet (UPOE), enabling power delivery up to 60W per port. This advanced PoE capability allows enterprises to power high-performance devices directly through the network cable without requiring separate power sources.

Typical powered devices include:

• Wireless access points

• IP phones

• Security cameras

• IoT sensors and controllers

• Digital signage systems

Modular 10G Uplink Architecture

The Cisco Catalyst C9300-48UN-A supports modular uplink options, including 8 × 10-Gigabit SFP+ uplinks, providing high-speed connectivity to aggregation and core layers within the network.

These high-capacity uplinks ensure that access layer traffic can move efficiently toward distribution or core switches without creating network bottlenecks. This architecture makes the switch ideal for large enterprise networks that require high-bandwidth connectivity between network layers.

Enterprise-Grade Performance and Scalability

The Cisco Catalyst C9300-48UN-A is designed to support demanding enterprise environments with high performance and scalable architecture.

Performance features include:

• Switching capacity up to 640 Gbps

• Forwarding rate up to 476 Mpps

• Support for thousands of VLANs

• Large MAC address table for enterprise networks

These capabilities allow the switch to handle high traffic loads while maintaining low latency and reliable network performance.

Advanced Layer 2 and Layer 3 Capabilities

The Cisco Catalyst C9300-48UN-A supports both Layer 2 switching and advanced Layer 3 routing, making it suitable for enterprise access and distribution layer deployments.

Supported routing features include:

• Static routing

• OSPF

• EIGRP

• BGP

• VRRP

These capabilities allow organizations to design scalable and efficient network architectures while maintaining high availability.

Cisco StackWise High-Availability Technology

One of the key features of the Cisco Catalyst 9300 Series is StackWise technology, which allows multiple switches to operate as a single logical unit.

The Cisco Catalyst C9300-48UN-A supports StackWise-480, enabling up to eight switches to be stacked together for increased capacity and simplified network management.

Benefits include:

• Simplified network administration

• Increased bandwidth between switches

• High availability and redundancy

This technology allows enterprises to expand their network infrastructure without increasing operational complexity.

Enterprise Security and Network Protection

Security is a major focus in modern enterprise networks. The Cisco Catalyst C9300-48UN-A includes advanced security features designed to protect network infrastructure and connected devices.

Security capabilities include:

• Access Control Lists (ACLs)

• Secure segmentation

• Network access control

• Threat detection and monitoring

These features help organizations protect their networks from unauthorized access and cyber threats.

Optimized for Modern Enterprise Networks

The Cisco Catalyst C9300-48UN-A 48-Port UPOE Switch is widely used in enterprise environments that require reliable and scalable network connectivity.

Common deployment scenarios include:

• Enterprise campus access networks

• Corporate office networks

• High-density wireless deployments

• Smart building infrastructure

• IoT network environments

Its combination of high-speed connectivity, UPOE support, and advanced routing capabilities makes it a versatile solution for modern IT infrastructures.