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Name:
EX4300-48T-DC-AFI
- Description:
- EX4300, 48-Port 10/100/1000BaseT + 450W DC PS (Airflow in)
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- 779184287339
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3 Year Extended Warranty
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Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
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Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
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In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
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Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
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Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
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EX4300-48T-DC-AFI Overview
EX4300-48T-DC-AFI is a high-performance, rack-mount Ethernet switch designed with a robust architecture that delivers reliable Layer 2 and Layer 3 services for enterprise and data center networks. Its design incorporates 48 integrated 10/100/1000 twisted-pair Ethernet ports along with four dedicated SFP uplink ports, delivering efficient connectivity and power options optimized for DC environments.
EX4300-48T-DC-AFI features Virtual Chassis technology, which enables stacking of multiple switches to simplify management and scale performance seamlessly. With high switching capacity and low latency, this switch is ideally suited for campus networks, branch offices, and small to medium-sized data centers where predictable, cost-effective performance is critical.
What is the price of EX4300-48T-DC-AFI?
Pricing for EX4300-48T-DC-AFI is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for EX4300-48T-DC-AFI.
Explore more options from Switches or explore other Juniper products.
EX4300-48T-DC-AFI Specifications
| Product Type | Switch |
| Power Source | N/A |
| Layer Supported | Layer 2 / Layer 3 |
| Form Factor | Rack-mount |
| Power Consumption | 39 W |
| Number Of Ethernet Ports | 24–48 Ports |
| Number Of Downlink Ports | 48 Ports |
| Manageable | Managed |
| Ethernet Technology | 10/100/1000 |
| Media Type Supported | Twisted Pair |
| Redundant Power Supply Supported | No |
| Manufacturer Part Number | EX4300-48T-DC-AFI |
| Uplink Configuration | 1G |
| IOS | N/A |
| POE Support | Non POE |
| SFP Ports | 4 SFP Ports |
| Memory | 256 MB |
| Rack Units | 1 RU |
| Interface Ports | 10/100/1000 |
| Port/Expansion Slot Details | 48 copper 10/100/1000 ports and 4 SFP uplink ports |
| Flash Memory | 256 MB |
| Switching Capacity | 176 Gbps |
| Switching Capacity With Stacking | 352 Gbps |
| Product Name | EX4300-48T-DC-AFI Ethernet Switch |
| Height | 1.75 inches |
| Width | 17.5 inches |
| Depth | 11 inches |
| Weight | 16 lbs |
EX4300-48T-DC-AFI Use Case
High-Density PoE for Distributed Retail Security Surveillance
In a nationwide retail chain, the EX4300-48T-DC-AFI delivers 450W of DC-powered PoE to support 48 IP cameras and wireless APs per location. This use case ensures centralized video analytics, reduces cabling complexity, and delivers consistent uptime—enabling real-time loss prevention and store performance insights.
Resilient DC-Powered Campus Access Switching
A large university deploys the EX4300-48T-DC-AFI in academic buildings to provide 48 Gigabit access ports backed by a 450W DC power supply. The switch leverages Virtual Chassis for simplified management and redundant power, delivering seamless connectivity for VoIP, e-learning labs, and research networks while minimizing downtime and operational costs.
Solar-Backed Telecommunications Hub for Remote Sites
A rural telecom operator uses the EX4300-48T-DC-AFI in off-grid cell sites, powered by solar-charged DC batteries. With 48-port Gigabit switching and 450W DC PS, the solution supports CPE routers, small-cell radios, and IoT sensors. This deployment increases network resilience, lowers diesel generator reliance, and ensures continuous connectivity in remote regions.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Depth | 11 inches | 11 inches | 11 inches | 12.8 inches | 10.8 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10GbE |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.75 inches | 1.75 inches | 1.75 inches | 1.75 inches |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| IOS | N/A | IP Lite | IP Lite | IP Lite | IP Lite |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | EX4300-48T-DC-AFI | EX4300-48T-TAA | EX4300-48T-AFI-TAA | EX4300-48T-DCI-TAA | EX4300-32F |
| Media Type Supported | Twisted Pair | Twisted Pair | Twisted Pair | Twisted Pair | Fiber |
| Memory | 256 MB | 256 MB | 4 GB | 512 MB | 512 MB |
| Number of Downlink Ports | 48 Ports | 48 Ports | 48 Ports | 48 Ports | 32 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 48 copper 10/100/1000 ports and 4 SFP uplink ports | 48 x 10/100/1000 copper ports with 4 x 1G SFP uplink ports | 48 fixed 10/100/1000 Ethernet ports and 4 dedicated 1G SFP uplink ports | 48 10/100/1000 copper ports, 4 SFP+ uplink ports | N/A |
| Power Consumption | 39 W | N/A | 370 W | 220 W | 90W |
| Power Source | N/A | AC Power Supply | Redundant Power Supply | AC Power Supply | AC Power Supply |
| Product Name | EX4300-48T-DC-AFI Ethernet Switch | Juniper Networks EX4300-48T-TAA Fixed Switch | Juniper Networks EX4300-48T-AFI-TAA Ethernet Switch | Juniper Networks EX4300-48T-DCI-TAA | Juniper Networks EX4300-32F Ethernet Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | No | Yes | No | No |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 32 SFP+ Ports |
| Switching Capacity | 176 Gbps | 128 Gbps | 1280 Gbps | 1120 Gbps | 640 Gbps |
| Switching Capacity with Stacking | 352 Gbps | N/A | N/A | 320 Gbps | 640 Gbps |
| Uplink Configuration | 1G | 1G | 1G | 1G / 10G | 10G |
| Weight | 16 lbs | 11 lbs | 12 lbs | 17 lbs | 7.5 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17.3 inches | 17.5 inches |
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Questions & Answers
Q
What is the Juniper EX4300-48T-DC-AFI switch?
A
The EX4300-48T-DC-AFI is a high-performance, 48-port 10/100/1000Base-T Ethernet switch with a 450 W DC power supply and front-to-back (airflow in) cooling designed for enterprise and data center deployments.
Q
How many ports and what speeds does the EX4300-48T-DC-AFI support?
A
This switch provides 48 auto-sensing 10/100/1000 Mbps RJ-45 ports, delivering wire-speed Layer 2/3 connectivity for demanding business applications.
Q
Does the EX4300-48T-DC-AFI support PoE, and what is its power budget?
A
Yes. It offers 450 W of DC-powered PoE+ budget, supporting IEEE 802.3af/at devices such as IP phones, wireless access points, and surveillance cameras.
Q
What are the DC power requirements and airflow orientation?
A
The EX4300-48T-DC-AFI accepts a -48 VDC to -60 VDC input and features front-to-back (airflow in) cooling to optimize thermal management in high-density racks.
Q
Can I stack multiple EX4300-48T-DC-AFI switches?
A
Yes. Using Juniper’s Virtual Chassis technology, you can stack up to 10 EX4300 switches over dedicated 10 GbE ports for unified management and scaling.
Q
What is the switching capacity and packet forwarding rate?
A
It delivers 1.44 Tbps of switching capacity and supports up to 1.07 billion pps forwarding rate to meet high-throughput demands.
Q
What Layer 2 and Layer 3 features are supported?
A
The EX4300-48T-DC-AFI supports advanced Layer 2 (STP, VLAN, QinQ) and Layer 3 (OSPF, BGP, RIP, VRF) protocols for versatile campus and edge deployments.
Q
How is the EX4300-48T-DC-AFI managed?
A
Management options include Junos OS CLI, Junos Space Network Director GUI, NETCONF, REST APIs, and SNMP for flexible automation and orchestration.
Q
What security features are built in?
A
Built-in security includes Port Security, DHCP Snooping, Dynamic ARP Inspection, MAC limiting, and policy enforcement via Junos OS firewall filters.
Q
What are the typical use cases for the EX4300-48T-DC-AFI?
A
Ideal for campus access, branch aggregation, and DC top-of-rack, supporting converged networks, virtualization, and unified communications.
Q
What is the operating temperature and environmental rating?
A
It operates from 0 °C to 45 °C with 5%–90% non-condensing humidity and meets NEBS Level 3 and ETSI environmental standards.
Q
Does the switch support redundant power supplies?
A
Yes. You can install a second EX-PWR-DC‐750W supply for full redundancy and uninterrupted operation during maintenance or power failure.
Q
Is rack mounting supported?
A
The EX4300-48T-DC-AFI ships with rack-mount brackets and fits in a standard 19-inch rack, occupying 1U of rack space.
Q
Which Junos OS release is required?
A
This model ships with Junos OS Release 15.1X53-D40 or later, offering advanced routing, EVPN, and automation features.
Q
What warranty and support options are available?
A
Juniper provides a one-year hardware warranty and 90-day software support. Optional Care Plus or Advanced Care service contracts extend support and response times.
