Juniper EX4300 Switches
The Juniper EX4300 are 1U Ethernet switches. Up to 10 join in a Virtual Chassis over a 320 Gbps interconnect. The EX4300-48T has 48 10/100/1000BASE-T ports with 248 Gbps unidirectional or 496 Gbps bidirectional switching capacity and 369 Mpps; the fiber EX4300-32F has 32 SFP ports, 4 SFP+ ports and 2 QSFP+ ports with 232/464 Gbps. AFO parts move air front to back (AIR OUT) and AFI parts back to front (AIR IN).
Sources: EX4300 Line of Ethernet Switches Datasheet, EX4300 System Overview
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Juniper EX4300 facts from the maker
- EX4300-48T
- 48 x 10/100/1000BASE-T; 248/496 Gbps; 369 Mpps; 350 W AC power supply Sources: EX4300 Line of Ethernet Switches Datasheet, EX4300 System Overview
- EX4300-32F
- 32 x SFP + 4 x SFP+ + 2 x QSFP+; 232/464 Gbps; 345 Mpps; 350 W AC power supply Source: EX4300 Line of Ethernet Switches Datasheet
- EX4300-24P
- 24 x 10/100/1000BASE-T PoE+; 715 W AC supply with 565 W of PoE+; 333 Mpps Source: EX4300 Line of Ethernet Switches Datasheet
- EX4300-48MP
- 24 x 10/100/1000BASE-T + 24 x 100/1000/2500/5000/10000BASE-T; 714 Mpps; 1400 W AC supply Source: EX4300 Line of Ethernet Switches Datasheet
- Virtual Chassis
- Up to 10 units, 320 Gbps interconnect Source: EX4300 Line of Ethernet Switches Datasheet
- Airflow
- AFO: front to back (AIR OUT); AFI: back to front (AIR IN) Sources: EX4300 Line of Ethernet Switches Datasheet, EX4300 System Overview
- End of sale
- March 31, 2026 (EX4300-FAN-AFI) Source: Juniper End of Life Products and Milestones: EX Series Hardware
Updated
Guides on the Juniper EX4300
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Juniper EX4300 Switches in the catalog
EX4300-48MP Juniper Switch, Front-to-Back, 48x 1GbE PoE++ RJ45 (24 × 10GbE) and 4x 40GbE QSFP+
Refurbished, tested & guaranteed
In stock
$2,465Ships same day
EX4300-24P Juniper Switch, Front-to-Back, Refurbished, 24x 1GbE PoE+ RJ45 and 4x 40GbE QSFP+
In stock
$590Ships same day
EX4300-48T-AFI Juniper Switch, Back-to-Front, Refurbished, 48x 1GbE RJ45 and 4x 40GbE QSFP+
In stock
$235Ships same day
EX4300-48T Juniper Switch, Front-to-Back, Refurbished, 48x 1GbE RJ45 and 4x 40GbE QSFP+
In stock
$145Ships same day
EX4300-48T-DC Juniper Switch, Front-to-Back Airflow, Used, 48x 1GbE RJ45 and 4x 40GbE QSFP+
In stock
$810Ships same day
EX4300-32F-DC Juniper Switch, Front-to-Back, Refurbished, 32x 1GbE SFP and 2x 40GbE QSFP+
In stock
$800Ships same day
EX4300-24T-TAA Juniper Switch, Front-to-Back Airflow, Used, 24x 1GbE RJ45 and 4x 40GbE QSFP+
In stock
$585Ships same day
EX4300-32F Juniper Switch, Front-to-Back, Refurbished, 32x 1GbE SFP and 2x 40GbE QSFP+
In stock
$310Ships same day
EX4300-48P-TAA Juniper Switch, Front-to-Back Airflow, Used, 48x 1GbE PoE+ RJ45 and 4x 40GbE QSFP+
In stock
$80Ships same day
Juniper EX4300 part numbers
| Part number | Ports | Airflow | Power | Condition | End of sale | Price | Stock |
|---|---|---|---|---|---|---|---|
| EX4300-48MP | 48 × 1GbE (24 × 10GbE) | Front-to-back | 1400 W AC AFO (715/1100/1400 W AFO options); dual load-sharing hot-swappable | Refurbished, tested & guaranteed | $2,465 | In stock | |
| EX4300-24P | 24 × 1GbE | Front-to-back (AFO) | 715 W AC AFO; dual load-sharing hot-swappable internal redundant PSUs | Refurbished, tested & guaranteed | $590 | In stock | |
| EX4300-48T-AFI | 48 × 1GbE | Back-to-front (AFI) | Refurbished, tested & guaranteed | $235 | In stock | ||
| EX4300-48T | 48 × 1GbE | Front-to-back | A 350 W AC power supply with the AIR OUT (AFO) label | Refurbished, tested & guaranteed | $145 | In stock | |
| EX4300-48T-DC | 48 × 1GbE | Front-to-back | A 550 W DC power supply with the AIR OUT (AFO) label | Used, tested & guaranteed | $810 | In stock | |
| EX4300-32F-DC | 32 × 1GbE | Front-to-back | A 550 W DC power supply with the AIR OUT (AFO) label | Refurbished, tested & guaranteed | $800 | In stock | |
| EX4300-24T-TAA | 24 × 1GbE | Front-to-back | A 350 W AC power supply with the AIR OUT (AFO) label | Used, tested & guaranteed | $585 | In stock | |
| EX4300-32F | 32 × 1GbE | Front-to-back | one AC power supply installed in the rear panel; DC power not supported | Refurbished, tested & guaranteed | $310 | In stock | |
| EX4300-48P-TAA | 48 × 1GbE | Front-to-back | Used, tested & guaranteed | $80 | In stock |
End of sale and support
| Model | Announced | End of sale | End of support | Notice |
|---|---|---|---|---|
| Juniper EX4300 (24P, 24T, 48P, 48T) | Juniper notice | |||
| Juniper EX4300-32F | Juniper notice | |||
| Juniper EX4300-48MP | Juniper notice |
Juniper end-of-life notice TSB105633. End of engineering is 2027-03-31.
Juniper end-of-life notice TSB109284. End of engineering is 2029-12-29.
Questions about the Juniper EX4300 family
- What do AFO and AFI mean on an EX4300?
- They name the airflow. AFO parts, labeled AIR OUT, move air front to back; AFI parts such as the EX4300-48T-AFI and the EX4300-FAN-AFI, labeled AIR IN, move air back to front.Sources: EX4300 Line of Ethernet Switches Datasheet, EX4300 System Overview
- How many EX4300 switches can join a Virtual Chassis?
- Up to 10, over a 320 Gbps interconnect.Source: EX4300 Line of Ethernet Switches Datasheet
- Is there a DC model of the EX4300?
- Yes. The EX4300-48T-DC and EX4300-32F-DC take a 550 W DC power supply with the AIR OUT (AFO) label.Source: EX4300 System Overview
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