Which way does the air flow on the QFX5120-48Y-DC-AFI?

The airflow of the QFX5120-48Y-DC-AFI is back-to-front (AFI).

What ports does the QFX5120-48Y-DC-AFI have?

The QFX5120-48Y-DC-AFI has 48 × 1/10/25GbE, with uplinks of 8x 100GbE QSFP28 and 56 data ports in all.

What is the throughput of the QFX5120-48Y-DC-AFI?

The QFX5120-48Y-DC-AFI has a throughput of 4 Tbps bidirectional (2 Tbps unidirectional), 2 Bpps.

What power does the QFX5120-48Y-DC-AFI use?

The QFX5120-48Y-DC-AFI uses DC.

How much rack space does the QFX5120-48Y-DC-AFI take?

The QFX5120-48Y-DC-AFI takes 1U of rack space.

What software does the QFX5120-48Y-DC-AFI run?

The QFX5120-48Y-DC-AFI runs Junos OS.

Is the Juniper QFX5120-48Y (AFI, AFO, DC-AFI) end of life?

Juniper ended the sale of the Juniper QFX5120-48Y (AFI, AFO, DC-AFI) on October 4, 2021. The dates are from the maker notice linked in the end of sale table on this page. The hardware keeps working after them; what ends is the maker's side: new software fixes, support cases and replacement under a maker contract.

QFX5120-48Y-DC-AFI Juniper Switch, Back-to-Front, Used, 48x 1/10/25GbE SFP28 and 8x 100GbE QSFP28

Condition: Used, tested & guaranteed
WARRANTY & RETURNS: QFX5120-48Y-DC-AFI has a 3-year warranty and a 30-day return policy. DOA units are replaced or refunded. Full terms are on the warranty page and the refund policy.
Availability: In stock

$9,895

A firm price comes back, typically the same business day. Prefer a PO or wire? We take those too. Just ask.

The Juniper QFX5120-48Y-DC-AFI is a switch from the Juniper QFX5120 family with 48 ports of 1/10/25GbE SFP28, 8 ports of 100GbE QSFP28, back-to-front airflow and DC power. It is a Layer 3 managed platform that runs Junos OS. This unit is used: inspected, powered on and functionally tested by Townsend Networks technicians before listing. One switch per order, with a rack-mount kit and the power cable(s) to match.

Other versions

QFX5120-48Y-AFI
Refurbished, tested & guaranteedAirflow: Back-to-front (AFI)In stock
$9,895
QFX5120-48Y-AFO
Refurbished, tested & guaranteedAirflow: Front-to-back (AFO)In stock
$9,895

Compatible with: JPSU-650W-DC-AFI power supplies and the QFX5110-FANAFI back-to-front fan module, per Juniper's ordering table. The AC supplies JPSU-650W-AC-AI and JPSU-650W-AC-AO are for the AC models of the 48Y.
HOW IT DIFFERS: QFX5120-48Y-DC-AFI is the DC powered, back-to-front QFX5120-48Y: Juniper's ordering table lists it as 48x25GbE plus 8x100GbE, 1 U, DC airflow in, with the JPSU-650W-DC-AFI supply. Its AC sister QFX5120-48Y-AFI has the same airflow with JPSU-650W-AC-AI supplies, while QFX5120-48Y-AFO is the AC version with front-to-back airflow and JPSU-650W-AC-AO supplies. The data sheet gives the 48Y 283 W maximum and 155 W typical draw.

Model: QFX5120-48Y-DC-AFI
Network Ports: 48 × 1/10/25GbE
Connectors: SFP28, QSFP28
Type: Switch
Condition: Used, tested & guaranteed

Technical details

Brand	Juniper
Family	QFX5120
Uplinks	8x 100GbE QSFP28
Total ports	56
Fastest port	100GbE
Layer	Layer 3 (managed)
Operating system	Junos OS
Rack units	1U
Airflow	Back-to-front (AFI)
Power input	DC
Throughput	4 Tbps bidirectional (2 Tbps unidirectional), 2 Bpps
Fans	five fan modules (4+1 redundancy)
Power supplies	two DC power supplies, each with a label AIR IN

Juniper datasheet

Testing process

End of sale and support

Model	Announced	End of sale	Notice
Juniper QFX5120-48Y (AFI, AFO, DC-AFI)	2021-01-20	2021-10-04	Juniper notice

Juniper lists the QFX5120-48Y-AFI, -AFO and -DC-AFI part numbers under a SKU transformation notice (TSB17951) and gives no end of support date for them.

Questions and answers

Which way does the air flow on the QFX5120-48Y-DC-AFI?: The airflow of the QFX5120-48Y-DC-AFI is back-to-front (AFI).
What ports does the QFX5120-48Y-DC-AFI have?: The QFX5120-48Y-DC-AFI has 48 × 1/10/25GbE, with uplinks of 8x 100GbE QSFP28 and 56 data ports in all.
What is the throughput of the QFX5120-48Y-DC-AFI?: The QFX5120-48Y-DC-AFI has a throughput of 4 Tbps bidirectional (2 Tbps unidirectional), 2 Bpps.
What power does the QFX5120-48Y-DC-AFI use?: The QFX5120-48Y-DC-AFI uses DC.
How much rack space does the QFX5120-48Y-DC-AFI take?: The QFX5120-48Y-DC-AFI takes 1U of rack space.
What software does the QFX5120-48Y-DC-AFI run?: The QFX5120-48Y-DC-AFI runs Junos OS.
Is the Juniper QFX5120-48Y (AFI, AFO, DC-AFI) end of life?: Juniper ended the sale of the Juniper QFX5120-48Y (AFI, AFO, DC-AFI) on October 4, 2021. The dates are from the maker notice linked in the end of sale table on this page. The hardware keeps working after them; what ends is the maker's side: new software fixes, support cases and replacement under a maker contract.

Juniper QFX5120-48Y-DC-AFI / QFX5120-48Y switch, 48x 25GbE SFP28 plus 8x 100GbE QSFP28, back-to-front airflow (AFI), DC power

WHAT'S INCLUDED

One (1) Juniper QFX5120-48Y-DC-AFI. Includes a rack-mount kit and the power cable(s) to match the switch.

CONDITION & TESTING

Condition: Used, Tested & Guaranteed QFX5120-48Y-DC-AFI was tested by Townsend Networks technicians before listing. The test process is on /testing-process.