Key Takeaways
The C9300L-48P-4X-E delivers 740W total PoE budget across 48 ports at 30W each, eliminating external power injectors and supporting simultaneous deployment of IP phones, wireless APs, cameras, and IoT devices.
StackWise-320 stacking technology enables up to 8 switches to function as a single logical unit with 320 Gbps stacking bandwidth and 496 Gbps total switching capacity, providing scalability without replacing existing hardware.
The switch provides 176 Gbps non-blocking switching capacity in standalone mode with four 10G SFP+ uplink ports, ensuring wire-speed performance and eliminating upstream bottlenecks in high-density access layer deployments.
Full Layer 3 routing support (OSPF, EIGRP, static routing) eliminates the need for separate routers and enables VLAN inter-routing, QoS enforcement, and efficient traffic segmentation without additional hardware.
MACsec encryption, Encrypted Traffic Analytics, 802.1X authentication, and IP Source Guard collectively support zero-trust security architectures and compliance requirements for data protection at the access layer.
Full Cisco DNA Center compatibility enables intent-based networking with centralized policy automation and AI-driven analytics, significantly reducing operational complexity in large-scale enterprise deployments.
Enterprise network infrastructure demands hardware that can scale with business growth while maintaining robust security and operational efficiency. The Cisco Catalyst C9300L-48P-4X-E stands out as a high-performance, stackable Layer 3 switch engineered specifically for enterprise access and distribution layer deployments. Whether you are managing a sprawling corporate campus, a mid-sized business network, or a data center edge environment, this switch delivers the throughput, Power over Ethernet (PoE) capacity, and automation capabilities required to meet modern IT demands. In 2026, organizations migrating away from aging Catalyst 3850 infrastructure will find the C9300L-48P-4X-E to be a technically compelling upgrade path. This article breaks down 13 critical features of this platform, helping IT managers, procurement specialists, and network engineers make informed sourcing and deployment decisions. For businesses seeking cost-effective access to this hardware, Trifecta Networks offers pre-owned Cisco Catalyst equipment with professional support.
1. 48 x PoE+ Access Ports with 740W Total Budget
The C9300L-48P-4X-E is equipped with 48 x 10/100/1000 Ethernet PoE+ ports, each capable of delivering up to 30W of power per port. The total PoE budget reaches 740W, providing sufficient capacity to simultaneously power IP phones, wireless access points, IP surveillance cameras, and IoT endpoint devices across the access layer. This eliminates the need for dedicated power injectors and reduces cabling complexity in large deployments.
2. 4 x 10G SFP+ Fixed Uplink Ports
Four integrated 10 Gigabit SFP+ uplink ports provide high-bandwidth connectivity to aggregation and core switches. These fixed uplinks eliminate the need for add-on modules, reducing configuration complexity. The 10G uplinks ensure that the C9300L-48P-4X-E can efficiently handle traffic aggregation from all 48 PoE+ access ports without creating upstream bottlenecks, a critical design consideration for high-density environments.
3. Switching Capacity of 176 Gbps Standalone
In standalone mode, the Cisco Catalyst C9300L-48P-4X-E delivers a non-blocking switching capacity of 176 Gbps with a forwarding rate of 130.95 Mpps. These figures ensure wire-speed performance across all ports simultaneously, supporting latency-sensitive applications such as unified communications, video collaboration, and real-time data analytics. When stacked, total switching capacity scales to 496 Gbps with a forwarding rate of 369.05 Mpps.
4. StackWise-320 Stacking Technology
Cisco StackWise-320 enables up to eight switches to be interconnected with a combined stacking bandwidth of 320 Gbps. This architecture allows the stack to function as a single logical unit, simplifying management, improving redundancy, and maximizing scalability. Network infrastructure teams can add capacity incrementally without replacing existing hardware, extending asset life cycles and protecting capital investment. The stacking capability also provides high availability through automatic failover in the event of a stack member failure.
Configuration | Switching Capacity | Forwarding Rate | Max Stack Members |
|---|---|---|---|
Standalone | 176 Gbps | 130.95 Mpps | 1 |
Stacked | 496 Gbps | 369.05 Mpps | 8 |
Stacking Bandwidth | 320 Gbps | — | — |
5. Layer 3 Routing Protocol Support
The C9300L-48P-4X-E operates as a full Layer 3 switch, supporting static routing, OSPF, EIGRP, and RIP. This enables the switch to function at both the access and distribution layers without requiring a separate router, reducing hardware footprint and simplifying network topology. Layer 3 capabilities are essential for VLAN inter-routing, Quality of Service (QoS) enforcement, and efficient traffic segmentation in multi-tenant or multi-department environments.
6. MACsec Encryption and Advanced Security Features
Security is a primary concern for enterprise networks in 2026. The C9300L-48P-4X-E supports IEEE 802.1AE MACsec wire-speed encryption, ensuring that data traversing the access layer remains confidential and protected from interception. Additional security capabilities include:
Access Control Lists (ACLs) for granular traffic filtering
Encrypted Traffic Analytics (ETA) for threat detection without decryption
IEEE 802.1X port-based authentication
DHCP snooping and Dynamic ARP Inspection (DAI)
IP Source Guard for unauthorized device prevention
These layered security mechanisms make the C9300L-48P-4X-E well-suited for compliance-driven environments where data protection and network access control are mandatory requirements.
7. Cisco IOS XE Software Platform
Running on Cisco IOS XE, the C9300L-48P-4X-E benefits from a modular, Linux-based operating system that supports programmability, streaming telemetry, and open standards-based APIs including YANG, NETCONF, and RESTCONF. IOS XE enables network automation workflows, reducing manual configuration overhead and minimizing human error. The platform also supports in-service software upgrades (ISSU) to maintain uptime during maintenance windows.
8. Energy Efficient Ethernet (EEE) Support
Compliance with IEEE 802.3az Energy Efficient Ethernet reduces power consumption during periods of low traffic activity. The C9300L-48P-4X-E automatically negotiates reduced power states on idle ports, contributing to data center and wiring closet energy efficiency initiatives. For organizations with sustainability mandates or data center PUE (Power Usage Effectiveness) targets, EEE compliance is an important operational consideration.
9. Physical Form Factor and Hardware Specifications
The C9300L-48P-4X-E occupies a standard 1U rack form factor with dimensions of 1.73 x 17.5 x 16.6 inches and a weight of 12.5 lbs. These compact physical dimensions make it suitable for standard 19-inch equipment racks in wiring closets, server rooms, and data center edge deployments. The switch includes 8 GB DRAM and 16 GB flash storage, supporting complex routing tables and local application hosting via Cisco IOx.
10. MAC Address and Routing Table Capacity
The C9300L-48P-4X-E supports a MAC address table of 32,000 entries and an IPv4 routing table of 32,000 routes (24,000 direct and 8,000 indirect). These specifications support large, segmented enterprise environments with numerous VLANs, endpoint devices, and routing adjacencies. The 16 MB packet buffer accommodates traffic bursts common in converged networks carrying voice, video, and data simultaneously.
Use Case | Relevant Specification | Benefit |
|---|---|---|
IP Telephony | 740W PoE budget, 30W per port | Power and connect up to 48 IP phones without external PSUs |
Wireless Infrastructure | PoE+ per port, 10G uplinks | Power high-density Wi-Fi 6 APs with sufficient backhaul |
Security Cameras | 740W aggregate PoE, MACsec | Power and secure IP surveillance endpoints |
Campus Distribution | StackWise-320, Layer 3 routing | Scalable, redundant distribution layer without external routers |
Secure Enterprise Access | ETA, 802.1X, ACLs | Enforce zero-trust access policies at the edge |
Migrating from Cisco Catalyst 3850 to the C9300L-48P-4X-E
The C9300L-48P-4X-E represents a natural upgrade path for organizations still operating Catalyst 3850 infrastructure. Compared to the 3850 series, the C9300L delivers significantly higher PoE capacity, improved stacking bandwidth, modern IOS XE programmability features, and DNA Center compatibility. The transition also positions organizations for software-defined networking and zero-trust security architectures that are now standard in enterprise environments in 2026.
Network teams should plan migration in phases, beginning with access layer switches in high-density areas before expanding to distribution-layer deployments. Compatibility testing with existing management tools and uplink infrastructure should be completed prior to production cutover to minimize service disruption.
Conclusion
The Cisco Catalyst C9300L-48P-4X-E delivers a technically robust combination of PoE+ capacity, Layer 3 intelligence, StackWise-320 scalability, and enterprise-grade security that meets the demands of modern access and distribution layer deployments. With 176 Gbps switching capacity, 740W total PoE budget, and deep Cisco DNA Center integration, this platform remains a highly relevant choice for enterprise infrastructure refresh projects in 2026. To get started with your Cisco Catalyst procurement, browse current Cisco equipment specials and take the first step toward a more scalable, secure network infrastructure.
FAQs
Q: What are the PoE specifications of the Cisco Catalyst C9300L-48P-4X-E?
A: The Cisco Catalyst C9300L-48P-4X-E provides 48 x 10/100/1000 PoE+ ports with a maximum output of 30W per port and a total PoE budget of 740W. This capacity supports simultaneous powering of IP phones, wireless access points, IP cameras, and IoT devices across all 48 ports.
Q: Does the Cisco C9300L-48P-4X-E support switch stacking, and what is the stacking bandwidth?
A: Yes, the C9300L-48P-4X-E supports Cisco StackWise-320 technology, enabling up to eight switches to be stacked with a combined stacking bandwidth of 320 Gbps. In a fully stacked configuration, total switching capacity reaches 496 Gbps with a forwarding rate of 369.05 Mpps.
Q: What does the ‘-E’ suffix indicate in the C9300L-48P-4X-E model number?
A: The ‘-E’ designation indicates that the switch ships with a Cisco Network Essentials software license, which includes core Layer 2/3 switching and routing features, baseline security capabilities, and QoS functionality. Organizations requiring advanced features such as SD-Access can upgrade to a Network Advantage license independently of the hardware.
Q: What security features are included in the Cisco Catalyst C9300L-48P-4X-E?
A: The C9300L-48P-4X-E includes IEEE 802.1AE MACsec wire-speed encryption, Encrypted Traffic Analytics (ETA), Access Control Lists (ACLs), 802.1X port-based authentication, DHCP snooping, Dynamic ARP Inspection (DAI), and IP Source Guard. These features collectively support zero-trust access architectures and compliance-driven security policies.