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EX4300-48T-AFI

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48PORT WEB MNG 10/100/1000 350W AC ENET STACKABLE BCK-FRONT AIRFLOW
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ex4300-48t-afi 48port web mng 10/100/1000 350w ac enet stackable bck-front airflow

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EX4300-48T-AFI Overview

EX4300-48T-AFI is a high-performance Ethernet switch featuring a resilient architecture built for scalability and efficiency in enterprise edge and campus networks. It integrates advanced Virtual Chassis stacking to simplify management while delivering robust performance for mission-critical applications.

This model provides flexible power options via an efficient AC power supply and offers 48 10/100/1000 RJ45 ports along with 4 dedicated 1Gb SFP uplink ports. Designed to support diverse use cases—from data center interconnect to branch connectivity—the EX4300-48T-AFI ensures reliable operation, high throughput, and seamless scalability.

EX4300-48T-AFI price is $2,753.00, a 74.5% saving from the Juniper list price of $10,800.00. EX4300-48T-AFI is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for EX4300-48T-AFI for additional pricing. Browse the full Juniper Ex4300 Series Ethernet Switches series or explore all Juniper products.

EX4300-48T-AFI Specifications

Product Type
Switch
Power Source
AC Power Supply
Layer Supported
Layer 2 / Layer 3
Form Factor
Rack-mount
Power Consumption
95W
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-AFI
Uplink Configuration
1G
IOS
IP Services
POE Support
Non POE
SFP Ports
4 SFP Ports
Memory
512 MB
Rack Units
1 RU
Interface Ports
10/100/1000
Port/Expansion Slot Details
48 x 10/100/1000 RJ45 ports and 4 x 1Gb SFP ports
Flash Memory
256 MB
Switching Capacity
176 Gbps
Switching Capacity with Stacking
352 Gbps
Product Name
EX4300-48T-AFI Ethernet Switch
Height
1.73 inches
Width
17.3 inches
Depth
14.9 inches
Weight
18 lbs

EX4300-48T-AFI Use Case

High-Density Branch Office Connectivity with EX4300-48T-AFI

In a multi-floor branch office supporting 200+ employees, the EX4300-48T-AFI’s 48 10/100/1000 Mbps ports, 350W AC power and front-to-back airflow maintain resilient gigabit access in a compact wiring closet. Web-managed stacking up to 10 units delivers unified control, zero-touch provisioning and 30% faster deployment. Benefit: streamlines network operations, minimizes downtime and scales easily as the branch grows.

Leaf-Switch Role in Virtualized Data Center Fabric

As a top-of-rack leaf in a two-tier data center fabric, the EX4300-48T-AFI provides 48 low-latency 1GbE ports, front-airflow cooling and 350W AC redundancy. Integrated Web management and Virtual Chassis stacking simplify firmware updates and orchestration across 10 racks. Benefit: accelerates east-west VM migration, cuts administrative overhead by 25% and ensures predictable performance under heavy east-west traffic.

Campus Distribution Layer for Digital Learning Environments

In a university’s central comms room, the EX4300-48T-AFI aggregates wired labs, VoIP phones and security cameras over 48 gigabit ports with front-to-back airflow and 350W AC power. Web-based management and up to 480 Gbps stacking bandwidth enable rapid adds/moves/changes across multiple buildings. Benefit: reduces latency for real-time applications by 40%, simplifies network expansion and delivers high availability for thousands of users.

Quality Certifications

To get the detailed certification, please go to the Compliance Center.

ISO 14001 Certified - UCCISO 9001 Certified - UCCRoHS CompliantREACH CompliantFCC CertifiedCE Mark - European ConformityVCI CertifiedUKCA Mark - UK Conformity Assessed

Product Comparison Table

48PORT WEB MNG 10/100/1000 350W AC ENET STACKABLE BCK-FRONT AIRFLOWEX4300-48T-AFIEX4300 TAA, 24-Port 10/100/1000BaseT + 350W AC PSEX4300-24T-TAAEX4300 TAA, 24-Port 10/100/1000BaseT PoE-plus + 715W AC PS (provides 400W PoE+ power)EX4300-24P-TAAEX4300, 32-Port 1000BaseX SFP, 4x10GBaseX SFP+ and 550W DC PS (Optics sold separately)EX4300-32F-DCEX4300, 32-Port 1000BaseX SFP, 4x10GBaseX SFP+ and 350W AC PS (Optics sold separately)EX4300-32F
Depth14.9 inches10.7 inches10 inches10.5 inches10.8 inches
Ethernet Technology10/100/100010/100/100010/100/100010GbE10GbE
Flash Memory256 MB256 MB256 MB256 MB256 MB
Form FactorRack-mountRack-mountRack-mountRack-mountRack-mount
Height1.73 inches1.73 inches1.75 inches1.75 inches1.75 inches
IOSIP ServicesIP ServicesLAN BaseIP LiteIP Lite
Interface Ports10/100/100010/100/100010/100/1000N/A10/100/1000
Layer SupportedLayer 2 / Layer 3Layer 2 / Layer 3Layer 2 / Layer 3Layer 2 / Layer 3Layer 2 / Layer 3
ManageableManagedManagedManagedManagedManaged
Manufacturer Part NumberEX4300-48T-AFIEX4300-24T-TAAEX4300-24P-TAAEX4300-32F-DCEX4300-32F
Media Type SupportedTwisted PairTwisted Pair / FiberTwisted PairFiberFiber
Memory512 MB512 MB256 MB256 MB512 MB
Number of Downlink Ports48 Ports24 Ports24 Ports32 Ports32 Ports
Number of Ethernet Ports24–48 Ports12–24 Ports24–48 Ports24–48 Ports24–48 Ports
POE SupportNon POENon POEPOE+Non POENon POE
Port/Expansion Slot Details48 x 10/100/1000 RJ45 ports and 4 x 1Gb SFP ports24 x 10/100/1000 Ethernet ports and 4 x 1/10G SFP+ uplink ports24 PoE+ ports and 4 SFP+ uplink portsN/AN/A
Power Consumption95W46 WN/A63W90W
Power SourceAC Power SupplyAC Power SupplyAC Power SupplyDC Power SupplyAC Power Supply
Product NameEX4300-48T-AFI Ethernet SwitchEX4300-24T-TAA Ethernet SwitchJuniper Networks EX4300-24P-TAA Ethernet SwitchJuniper Networks EX4300-32F-DC Ethernet SwitchJuniper Networks EX4300-32F Ethernet Switch
Product TypeSwitchSwitchSwitchSwitchSwitch
Rack Units1 RU1 RU1 RU1 RU1 RU
Redundant Power Supply SupportedNoNoNoNoNo
SFP Ports4 SFP Ports4 SFP Ports4 SFP Ports32 SFP+ Ports32 SFP+ Ports
Switching Capacity176 Gbps128 Gbps128 Gbps640 Gbps640 Gbps
Switching Capacity with Stacking352 GbpsN/A320 Gbps640 Gbps640 Gbps
Uplink Configuration1G1G / 10G10G10G10G
Weight18 lbs7.5 lbs13 lbs8.6 lbs7.5 lbs
Width17.3 inches17.5 inches17.56 inches17.5 inches17.5 inches

Reviews & Ratings

M
Mark Benson
5

Reliable access switch with consistent throughput. Back to front airflow suited our rack layout perfectly.

Z
Zain Ul Abidin
5

Stable operation since deployment. Performs well under daily user traffic without slowdown.

C
Christopher Neal
5

Solid choice for enterprise access networks. Easy to manage and integrates well with Juniper stacks.

K
Kamran Yousaf
5

No issues with performance or hardware. It has been running continuously without interruption.

O
Oliver Grant
4

Good balance of features and reliability. Suitable for structured office environments.

Questions & Answers

What is the Juniper EX4300-48T-AFI switch?

The EX4300-48T-AFI is a 1U, 48-port managed Ethernet access switch offering 48 10/100/1000BASE-T ports, 4 10GbE SFP+ uplinks, a 350W AC power supply, Virtual Chassis stacking and back-to-front airflow for data center environments.

What are the key features of the EX4300-48T-AFI?

Key features include 48 1GbE RJ45 ports, 4 10GbE SFP+ uplinks, Junos OS, Virtual Chassis support (up to 10 units), 176 Gbps switching capacity, advanced L2/L3 protocols, and back-to-front airflow.

How many ports and what speeds does the EX4300-48T-AFI provide?

It provides 48 10/100/1000BASE-T copper access ports and 4 dedicated 10GbE SFP+ uplink ports for high-speed aggregation.

Does the EX4300-48T-AFI support PoE or PoE+?

No, the EX4300-48T-AFI does not support Power over Ethernet or PoE+; it is designed for non-PoE deployments.

What power supply and consumption ratings does the EX4300-48T-AFI use?

It includes an internal 350W AC power supply. Typical power draw is approximately 100W, with a maximum consumption of 350W under full load.

What is the airflow direction of the EX4300-48T-AFI?

The unit uses back-to-front airflow, drawing cool air in from the rear and exhausting warm air out the front, ideal for hot-aisle/cold-aisle data center racks.

Is the EX4300-48T-AFI stackable and what is the maximum stack size?

Yes. It supports Juniper Virtual Chassis technology, allowing up to 10 switches to operate as a single logical device with up to 80 Gbps stacking bandwidth per link.

Which management interfaces are available on the EX4300-48T-AFI?

Management is via Junos OS CLI (console/SSH), web-based GUI, SNMP v2/v3, RMON, NETCONF, sFlow and REST APIs for automation and monitoring.

What security features are included in the EX4300-48T-AFI?

Built-in security features include 802.1X port-based authentication, DHCP snooping, dynamic ARP inspection, ACLs, IP source guard, storm control, and RADIUS/TACACS+ support.

What VLAN and Layer 2 protocols does the EX4300-48T-AFI support?

It supports 4K VLANs, 802.1Q tagging, Q-in-Q, LACP, STP/RSTP/MSTP, LLDP, IGMP snooping, and IPv4/IPv6 multicast filtering.

What is the switching capacity and forwarding performance?

The switch delivers 176 Gbps of switching capacity and up to 130 Mpps for 64-byte packets, backed by a 16K MAC address table.

What are the environmental and operating specifications?

Operating temperature is 0 °C to 40 °C, storage temperature ‑40 °C to 70 °C, humidity 5–90% non-condensing, altitude up to 3,000 m, RoHS and WEEE compliant.

How do I mount the EX4300-48T-AFI in a rack?

It fits a standard 19″ rack in 1U space; rack-mount brackets and screws are included for front-mount installation.

What software and licensing options are available?

Ships with Junos OS BASE license including full Layer 2 features; optional Advanced Layer 3 features (OSPF, BGP, MPLS) are available via paid license.

What warranty coverage does the EX4300-48T-AFI include?

Juniper Networks provides a one-year limited hardware warranty with next-business-day advance replacement and one year of software updates.

Does the EX4300-48T-AFI support IPv6?

Yes. It fully supports IPv6 management, ACLs, DHCPv6, SLAAC, static routing, and RIPng in its advanced layer functions.

Which certifications and compliance standards does the EX4300-48T-AFI meet?

It is certified for CE, FCC Part 15 Class A, UL/CSA 60950-1, RoHS, WEEE, ENERGY STAR, and NEBS Level 3 compliance.