C9300-48UB-E Cisco Catalyst 9300 L3 Managed Network Essentials Switch.

General Specification

• Brand: Cisco
• Part Number: C9300-48UB-E
• Product Type: Managed Layer 3 Stackable Switch

Technical Information

• Port Configuration: 48 x 10/100/1000 (UPOE)
• Power over Ethernet (PoE): Universal Power Over Ethernet (UPOE)
• PoE Budget: 822W for high-power device support
• Form Factor: 1U Rack-Mountable
• Switching Capacity: 256 Gbps
• Stacking Bandwidth: 480 Gbps
• Combined Capacity (Stacking Enabled): 736 Gbps
• Forwarding Rate: 190.48 Mpps
• Stacked Forwarding Rate: 547.62 Mpps

Routing & VLAN Support

• IPv4 Routing Table: 64,000 entries
• IPv6 Routing Table: 32,000 entries
• Flexible NetFlow Entries: 128,000
• Maximum VLANs: 4,000
• Switched Virtual Interfaces (SVIs): 1,000
• Packet Buffer: 32MB

MAC & Jumbo Frame Support

• MAC Address Table Size: 32,000 entries
• Jumbo Frame Support: Up to 9,198 bytes

Routing Protocols

• OSPF, OSPFv3, IS-IS, RIP-1, RIP-2, RIPng
• PIM-SM, PIM-SSM, IGMP, VRRP
• Policy-Based Routing (PBR)

Management & Remote Access

• SNMP v1, v2c, v3
• RMON 1 & 2, CLI, NETCONF, RESTCONF

Advanced Features

• StackWise-480 & StackPower Technology
• Trunking, Full Duplex, QoS, ACL, STP Support
• VLAN Double Tagging (Q-in-Q), Private VLANs
• Integrated Wireshark & Flexible NetFlow (FNF)
• 16MB Packet Buffer, FTP Client, 3 Cooling Fans

Compliant Standards

• IEEE 802.3, 802.3u, 802.1D, 802.1Q, 802.3ab
• IEEE 802.1p, 802.3af, 802.3x, 802.3at, 802.1w
• IEEE 802.1x, 802.1s, 802.3ad (LACP)

Power & Redundancy

• Input Voltage: AC 120/230V (50 - 60Hz)
• Redundant Power: Optional

Physical Dimensions & Weight

• Width: 17.5 inches
• Depth: 19.2 inches
• Height: 1.7 inches
• Weight: 17.02 lbs

Multi-Speed Ethernet for Diverse Environments

• 48 ports supporting 10/100/1000 Mbps Ethernet connectivity
• Backward compatibility with legacy devices and cabling
• Optimized for high-density user access and device aggregation
• Consistent performance across mixed-speed networks

Enhanced Power Delivery for Modern Devices

• Supports UPOE and PoE+ standards
• Provides power to access points, IP cameras, thin clients, and digital signage
• Reduces cabling complexity and installation costs
• Centralized power management for improved efficiency

Comprehensive Routing and Switching Features

• Advanced VLAN and inter-VLAN routing support
• Dynamic and static routing capabilities
• Improved traffic prioritization and load distribution
• Reduced latency for critical applications

Core Software Capabilities

• Centralized device management and monitoring
• Essential Layer 2 and Layer 3 services
• Support for automation and simplified provisioning
• Enhanced visibility into network performance

Overview of Cisco C9300-48UB-E Catalyst 9300 Series Switch 

The Cisco C9300-48UB-E is a high-performance Layer 3 managed switch designed for enterprise networks that require scalability, security, and high availability. With 48 ports supporting 10/100/1000 Mbps speeds and UPOE (Universal Power Over Ethernet), it enables businesses to power devices efficiently while maintaining superior network performance.

Key Features of the Cisco C9300-48UB-E

Layer 3 Managed Switching

This switch supports advanced Layer 3 features, including dynamic routing, OSPF, EIGRP, and BGP, ensuring optimal traffic management and network efficiency.

Scalability and Stackability

The Catalyst 9300 series allows stackable deployments with up to eight switches, enabling seamless network expansion and simplified management.

UPOE and Power Efficiency

With Universal Power over Ethernet (UPOE) support, the C9300-48UB-E can supply up to 60W per port, making it ideal for powering high-consumption devices such as IP cameras, phones, and access points.

Advanced Security Features

MACsec Encryption

Secure data transmission with built-in MACsec encryption, protecting sensitive traffic against unauthorized access.

TrustSec Integration

Seamless integration with Cisco TrustSec enables scalable security policies, role-based access control, and enhanced segmentation.

Threat Detection and Mitigation

Built-in security measures such as Cisco DNA Center and Secure Network Analytics provide real-time monitoring, threat detection, and automated responses.

Performance and Reliability

High-Bandwidth Uplinks

The switch supports multiple uplink options, including 10G, 25G, and 40G, ensuring high-speed connectivity for data-intensive applications.

Redundant Power Supplies

Dual power supply options provide redundancy, reducing the risk of downtime due to power failures.

Resilient Network Design

With StackWise-480 technology, the Catalyst 9300 ensures high availability and minimal disruption in case of hardware failures.

Use Cases and Deployment Scenarios

Enterprise Campus Networks

The C9300-48UB-E is a perfect fit for large enterprise environments, offering robust security and scalability to meet growing network demands.

IoT and Smart Buildings

With UPOE support, businesses can power IoT devices such as smart lighting, security systems, and environmental sensors with ease.

Cloud-Ready Infrastructure

Seamless integration with Cisco DNA Center ensures a cloud-managed approach, enabling automation, AI-driven insights, and proactive troubleshooting.

Comparison with Other Catalyst 9300 Models

C9300-48UB-E vs. C9300-48UXM-E

While both models offer UPOE, the C9300-48UXM-E provides multi-gigabit ports for higher-speed requirements, whereas the C9300-48UB-E focuses on gigabit connections.

C9300-48UB-E vs. C9300-24T-E

The C9300-48UB-E offers twice the number of ports compared to the 24-port model, making it suitable for larger deployments.