C9300LM-48U-4Y-A Cisco Catalyst 9300 Series 48 Ports Uplinks Managed Switch

Key Specifications

• Brand: Cisco
• Model Identifier: C9300LM-48U-4Y-A
• Device Type: Managed Switch, Layer 3, 48 Ports
• Enclosure: Rack-mountable
• Port Configuration: 48 x 10/100/1000 (UPOE) + 4 x 25 Gigabit SFP (uplink)
• Power Over Ethernet: UPOE

Performance Metrics

• Stacking Bandwidth: 320 Gbps
• Switching Capacity: 296 Gbps
• Switching Capacity with Stacking: 616 Gbps
• Forwarding Rate: 220.22 Mpps
• Forwarding Rate with Stacking: 458.3 Mpps

Capacity and Scale

• IPv4 Routes: 32,000
• IPv6 Routes: 16,000
• Multicast Scale: 8,000
• Quality of Service (QoS) Entries: 5,120
• Access Control List (ACL) Entries: 5,120
• Buffer Size: 16 MB
• Virtual LAN IDs: 4,094
• Switched Virtual Interfaces (SVIs): 1,000
• Routed Ports: 416
• OSPF Routes: 1,000

Addressing Table Size

• MAC Address Table: 32,000 Entries
• Jumbo Frame Support: 9,198 Bytes
• Maximum Units in a Stack: 8

Routing Protocols

• OSPF
• RIP (version 1 and 2)
• EIGRP
• VRRP
• PIM-SM
• OSPFv3
• PIM-SSM
• Policy-based Routing (PBR)
• RIPng
• MSTP

Management and Security Features

• SNMP (v1, v2c, v3)
• RMON (1 and 2)
• CLI
• NETCONF
• RESTCONF
• gRPC
• IPv4 and IPv6 Support
• YANG

Encryption Standards

• 128-bit AES
• 256-bit AES

Key Features

• Access Control List (ACL) Support
• Quality of Service (QoS) Management
• CISCO StackWise Technology
• Rapid Per-VLAN Spanning Tree Plus (PVRST+)
• Shaped Round Robin (SRR)
• Remote Switch Port Analyzer (RSPAN)
• NetFlow Integration
• Class of Service (CoS) Features
• Flexible NetFlow (FNF)
• DiffServ Code Point (DSCP) Support
• Hot-Swappable Fans (3)
• Built-in ASIC
• Control Plane Protection (CoPP)
• Software-Defined Networking (SDN)
• Blue Beacon LED
• Zero-Touch Provisioning (ZTP)
• Secure Boot Capabilities
• Energy-Efficient Ethernet (EEE)
• Switched Port Analyzer (SPAN)
• Protocol Independent Multicast (PIM)
• First Hop Security (FHS)
• Private VLAN (PVLAN) Support
• Committed Information Rate (CIR) Management
• Media Access Control Security (MACsec)
• CISCO IP Service-Level Agreement (IP SLA)
• CISCO Trust Anchor Module
• CISCO Unified Access Data Plane (UADP) 2.0
• CISCO StackWise-320 Technology
• CISCO Discovery Protocol (CDP)
• Preboot Execution Environment Support

Compliant Standards

• IEEE 802.3
• IEEE 802.3u
• IEEE 802.3z
• IEEE 802.1d
• IEEE 802.1q
• IEEE 802.3ab
• IEEE 802.1p
• IEEE 802.3af
• IEEE 802.3x
• IEEE 802.3ad (LACP)
• IEEE 802.1w
• IEEE 802.1x
• IEEE 802.3ae
• IEEE 802.1s
• IEEE 802.1ae
• IEEE 802.3an
• IEEE 802.3at
• IEEE 1588v2
• IEEE 802.1ba
• IEEE 802.3bz
• IEEE 802.3bt
• Wi-Fi Certified 6

Memory Specifications

• RAM: 8 GB
• Flash Storage: 16 GB

Status Indicators

• Status Indicators: Present

Expansion and Connectivity

Interface Options

• 48 x 1000BASE-T RJ-45 UPOE - 60 W
• 4 x 25GBASE-X SFP Uplinks
• 1 x Management (LAN) RJ-45
• 1 x Console Port
• 1 x USB 2.0 Port

Power Supply

• Power Device: Internal Power Supply (Hot-plug)
• Installed Quantity: 1
• Maximum Supported Quantity: 2
• Power Redundancy: Optional
• Power Provided: 1000 Watts
• Voltage Requirement: AC 100-240 V (50 - 60 Hz)

Cisco C9300LM-48U-4Y-A Catalyst Switching Capabilities

The Cisco C9300LM-48U-4Y-A belongs to the Catalyst 9300 family, engineered for advanced enterprise switching applications where superior reliability, flexible scale, and enhanced efficiency are essential. This switch provides forty-eight integrated Ethernet interfaces supporting high-density connectivity, allowing organizations to build robust wired infrastructures capable of managing extensive data traffic. As part of Cisco’s modular and security-focused switching lineup, it supports next-level performance for environments prioritizing operational continuity and efficient data handling. Its enhanced uplink architecture, integrated automation features, and modern security innovations place it among the most capable systems within the enterprise switching segment. The model supports digital transformation demands by offering highly adaptable infrastructure functionality for business campuses, data centers, distributed branches, and metropolitan deployments relying on stable wired solutions.

Advanced Network Infrastructure Optimization With Cisco Catalyst Architecture

The device is structured around Cisco’s Unified Access Data Plane technology, enabling consistent performance optimization across various traffic loads. This architecture facilitates dependable throughput, minimizes latency fluctuations, and supports continuous packet delivery even in situations involving dense endpoint aggregation. The Cisco C9300LM-48U-4Y-A helps streamline wired operations by integrating hardware-accelerated packet forwarding, energy-efficient silicon, and modern queue-handling techniques engineered for demanding enterprise traffic patterns. With these improvements, organizations can operate a more resilient infrastructure capable of maintaining reliable application experiences during peak utilization periods.

Through this Catalyst architecture, the switch focuses on simplifying complex networking tasks by centralizing management functions into a unified control plane. It empowers businesses to expand their digital services without redesigning their entire infrastructure. The combination of innovative switching silicon and a flexible software stack ensures that enterprises enjoy sustained performance longevity and compatibility with future software-based enhancements. These qualities are essential for institutions that require a predictable lifecycle, minimizing long-term operational expenses.

High-Density Copper Port Configuration Supporting Enterprise Growth

With forty-eight copper interfaces, the Cisco C9300LM-48U-4Y-A supports extensive workstation, access point, VoIP, and device connectivity within enterprise workspaces. This density is ideal for businesses enhancing their digital workspace models, enabling effortless deployment of high-availability digital services. Each interface supports reliable Ethernet connectivity with contemporary performance characteristics that ensure consistent communication across a variety of operational environments. This structure allows companies to maintain flexible workstation layouts, expand departmental infrastructures, and adapt to new technological integrations without facing physical port limitations.

As digital ecosystems expand, the need for reliable wired solutions becomes vital for networked devices requiring steady throughput and minimal signal interference. The comprehensive port layout delivers versatile deployment potential that supports digital signage, integrated point-of-sale systems, building management solutions, and a wide array of intelligent IoT frameworks. Organizations in education, health services, retail, manufacturing, and public-sector operations benefit greatly from this capacity, as it provides a stable foundation for mission-driven services. The extensive availability of copper interfaces reduces the need for supplemental switching hardware, lowering installation complexity while maintaining operational agility.

Enhanced Uplink Design for Modern Data Transfer Requirements

The embedded high-speed uplink system integrated into the Cisco C9300LM-48U-4Y-A includes multiple 10 Gigabit or higher-capacity uplink options designed for efficient stack interconnection, core-routing communication, and data-center link integration. Enterprises increasingly rely on high-bandwidth uplinks to support rapidly growing application demands, such as real-time collaborative platforms, cloud-based service interactions, and extensive virtualization workloads. The uplink capabilities within this switch ensure smooth data flow between network layers, minimizing bottlenecks that commonly arise in older switch architectures. This approach guarantees that organizations can consistently deliver optimized performance throughout their infrastructure, regardless of traffic intensity.

These uplink features are also advantageous for institutions transitioning toward hybrid-cloud or fully cloud-first operational models. Interconnecting edge-, distribution-, and core-layer devices requires scalable uplink features capable of supporting both present workloads and future expansion. This switch accelerates this transformation by offering uplinks that maintain stable and predictable throughput even under demanding real-world conditions. With this architecture in place, businesses gain confidence that the switch can support evolving workloads without frequent equipment replacement, promoting sustainability and operational continuity.

Comprehensive Management and Automation Capabilities

Cisco developed the Catalyst 9300 switching platform to include enhanced automation capabilities, reducing manual configuration tasks and increasing operational efficiency. The Cisco C9300LM-48U-4Y-A integrates these control features through centralized management systems, software-defined access frameworks, and policy-based network automation tools. As enterprise networks become larger and more complex, automating routine switching functions becomes essential to ensuring optimal performance and reducing human error. This device supports a variety of automation tools that streamline device provisioning, VLAN configurations, monitoring workflows, and policy enforcement. Administrators benefit from a simplified operational experience that accelerates deployment timelines and ensures consistent network behavior across diverse infrastructures.

Through embedded telemetry, deep visibility into device performance metrics allows professionals to monitor traffic patterns, port utilization, latency states, and link conditions in real time. This comprehensive insight assists administrators in performing predictive adjustments, anticipating potential disruptions before they escalate into critical issues. Organizations operating complex multisite infrastructures or distributed environments value these capabilities as they strengthen network reliability and ensure compliance with internal performance expectations. The combination of rich telemetry and automated workflows forms a robust operational foundation for businesses implementing long-term digital modernization strategies.

Security Enhancements Integrated Into the Switching Engine

The switch incorporates advanced security innovations that align with Cisco’s automated and identity-based access frameworks. It supports next-generation security models that defend against common digital threats targeting modern enterprise infrastructures. As security risks evolve, it becomes increasingly important for hardware devices to incorporate threat defense layers natively. The Cisco C9300LM-48U-4Y-A integrates these preventative mechanisms through features such as encrypted management sessions, sophisticated access control options, and continuous trust verification protocols. These features significantly reduce the risk of unauthorized access, ensure traffic integrity, and reinforce compliance with strict corporate security standards.

These embedded safeguards operate seamlessly within large organizations that require multi-layer protection across thousands of connected devices. The switch supports identity-based access control, ensuring that each connected device is verified according to defined security policies. Network segmentation techniques supported by the switch help isolate traffic flows and reduce cross-network contamination risks. This design ensures that the infrastructure remains resilient even when faced with emerging vulnerabilities or malicious activity. With security integrated at the hardware level, enterprises operate with confidence knowing that mission-critical operations remain uninterrupted.