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Port Configuration & PoE+ Operation
The switch offers 48 x 10/100/1000BASE-T PoE+ (IEEE 802.3at) downlink ports which provide up to 30W per port and 4 × fixed 10G/1G SFP+ uplink ports for fast fibre backbone connectivity. It has a 715 W AC power supply that offers a default PoE budget of 505 W, scalable to 855 W with a second 715 W PSU or up to 1440 W with an optional high-wattage supply. It has dual power slots and three redundant fans for increased availability.
Performance & Stacking
Standalone switching capacity is 176 Gbps with forwarding rate of 130.95 Mpps. StackWise 320 technology provides 320 Gbps of stacking bandwidth, extending total capacity to 496 Gbps and forwarding rate to 369.05 Mpps across up to eight switches.
Security & Software
The switch runs on Cisco IOS XE and the UADP 2.0 ASIC, and offers AES256 MACsec hardware encryption, Encrypted Traffic Analytics (ETA), TrustSec and 802.1X authentication. It is sold with permanent Network Essentials (E) or Network Advantage (A) licenses and a necessary Cisco DNA subscription for SD-Access and policy automation.
Optimal deployment
The C9300L 48P 4X series is perfect for large campus access layers, enterprise branch offices and converged networks that demand high density PoE+ for 48 devices simultaneously – IP phones, Wi-Fi 6/6E access points, surveillance cameras and IoT endpoints – with future-ready 10G uplink capacity for network growth.
FAQ
Q1: What is the Cisco Catalyst C9300L-48P-4X used for?
A1: The Cisco Catalyst C9300L-48P-4X Switch is a high-density Layer 3 PoE+ access switch designed for enterprise campus and branch networks. It supports wired devices like IP phones, Wi-Fi access points, surveillance cameras, and IoT endpoints.
Q2: How many ports does it support?
A2: It provides:
● 48 × 10/100/1000BASE-T PoE+ access ports.
● 4 × 10G/1G SFP+ uplink ports for fiber connectivity.
Q3: What is the PoE power capacity?
A3: ● Base PoE budget: ~505W (with 715W PSU).
● Upgradable to ~855W with dual power supplies.
● Up to ~1440W with high-wattage PSU option.
● Each port supports up to 30W (PoE+ IEEE 802.3at).
Q4: Does it support stacking?
A4: Yes. It uses StackWise-320 technology:
● Up to 8 switches per stack.
● 320 Gbps stacking bandwidth.
● Unified management and high availability.
Q5: What is the switching performance?
A5: ● Switching capacity: 176 Gbps (single unit).
● Forwarding rate: ~130.95 Mpps.
● Up to 496 Gbps and 369.05 Mpps in a full stack.
Q6: What operating system does it run?
A6: It runs Cisco IOS XE on UADP 2.0 ASIC architecture, enabling:
● Programmability.
● Automation.
● Cloud-managed features via Cisco DNA.
Q7: What security features are included?
A7: Key security capabilities include:
● MACsec AES-256 hardware encryption.
● 802.1X authentication.
● TrustSec policy enforcement.
● Encrypted Traffic Analytics (ETA).
Q8: What licenses are available?
A8: It supports:
● Network Essentials (E).
● Network Advantage (A).
● Cisco DNA subscription (required for advanced automation and SD-Access features).
Q9: Where is it typically deployed?
A9: Common use cases:
● Enterprise campus access layer.
● Large branch offices.
● High-density PoE environments.
● Wi-Fi 6/6E access point deployments.
● IP surveillance and IoT-heavy networks.
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