Is the Juniper QFX5100 end of life?

Yes. Juniper's QFX Series hardware milestones page gives two sets of dates for the models on this page. QFX5100-48S, 48T and 24Q models: end of life announced 30 April 2021, last order 1 July 2022, end of support 1 July 2027. QFX5100-96S models: announced 25 May 2022, last order 31 December 2022, end of support 31 December 2027.

What is the difference between AFO and AFI on a QFX5100?

Airflow direction. Air Out (AFO) draws air in at the port side and exhausts it past the power supplies and fans; Air In (AFI) runs the other way, from the power supply and fan side to the ports. Juniper notes that older switches called these front-to-back and back-to-front. Pick the direction that matches your hot and cold aisles; mixing directions in one chassis is not supported.

Can QFX5100 switches be stacked or built into a fabric?

Yes. Up to ten QFX5100 switches form a QFX Virtual Chassis managed as one device. A Virtual Chassis Fabric scales to 20 devices in a spine and leaf design, with up to four QFX5100 spines, and EX4300 switches can join as leaf devices.

What condition and warranty come with a Juniper QFX5100 switch from Townsend?

Each listing prints its own condition. Units sold as new, refurbished or used are bench tested before they are listed: every port and module slot is checked and the previous owner's configuration is erased. They are covered by the Townsend warranty from the date of delivery; if the hardware fails in normal use we repair it or replace it with a tested unit, and the length and terms are on our warranty page. Unused hardware can be returned within 30 days of delivery. Juniper software licences and support contracts are not part of our warranty.

QFX5100-96S-DC-AFI Juniper Switch, Back-to-Front, Used, 96x 1/10GbE SFP+ and 8x 40GbE QSFP+

Condition: Used, tested & guaranteed
WARRANTY & RETURNS: QFX5100-96S-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

$2,260

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

The Juniper QFX5100-96S-DC-AFI is a switch from the Juniper QFX5100 family with 96 ports of 1/10GbE SFP+, 8 ports of 40GbE QSFP+, 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 cables to match.

Other versions

QFX5100-96S-AFI
Refurbished, tested & guaranteedAirflow: Back-to-front (AFI)In stock
$2,970
QFX5100-96S-AFO
Refurbished, tested & guaranteedAirflow: Front-to-back (AFO)In stock
$1,185

HOW IT DIFFERS: QFX5100-96S-DC-AFI is the DC-powered, back-to-front version of the 96-port QFX5100: 96 SFP/SFP+ ports and 8 QSFP+ ports with redundant fans and redundant DC power supplies. Juniper lists its DC power supply as the JPSU-850W-DC-AFI, an 850 W unit for the QFX5100-96S. Its sister QFX5100-96S-AFI has the same ports and airflow on redundant AC power supplies. The 96S chassis weighs 32.5 lb, against 21.8 lb for the 48S.

Model: QFX5100-96S-DC-AFI
Network Ports: 96 × 1/10GbE
Connectors: SFP+, QSFP+
Type: Switch
Condition: Used, tested & guaranteed

Technical details

Brand	Juniper
Family	QFX5100
Uplinks	8x 40GbE QSFP+
Total ports	104
Fastest port	40GbE
Management ports	2: 1 RJ-45 and 1 SFP
Layer	Layer 3 (managed)
Operating system	Junos OS
Rack units	2 U
Airflow	Back-to-front (AFI)
Power input	DC
Throughput	2.56 Tbps, 1.44 Bpps
Dimensions	3.46 x 17.36 x 22.44 in (8.8 x 44.09 x 57 cm)
Weight	32.5 lb (14.74 kg)
Mounting	four post mounting for 19-in server rack or datacom rack
Fans	Redundant and hot-pluggable fan modules
Power supplies	Dual redundant and hot-pluggable
Input voltage	-36 to -72 V DC power
Operating temperature	32° to 104° F (0° to 40° C)
Storage temperature	-40° to 158° F (-40° to 70° C)
Operating humidity	5% to 90% (noncondensing)
Operating altitude	up to 2,000 (610 m)
CPU	1.5 GHz dual-core Intel CPU
Memory (DRAM)	8 GB
Flash storage	32 GB SSD storage
MAC addresses	288,000
IPv4 routes	128,000 prefixes; 208,000 host routes
IPv6 routes	64,000 prefixes
VLANs	4,096 VLAN IDs
Jumbo frames	9,216 bytes
Packet buffer	12 MB shared
Latency	as low as 550 ns
Stacking	Virtual Chassis, up to 10 interconnected switches
Certifications	FCC 47CFR Part 15 Class A (2009); EN 55022 Class A (2006); UL 60950-1 (2nd Ed.)

Juniper datasheet

Testing process

End of sale and support

Model	Announced	End of sale	End of support	Notice
Juniper QFX5100-96S	2022-05-25	2022-12-31	2027-12-31	Juniper notice

Questions about the Juniper QFX5100 family

Is the Juniper QFX5100 end of life?: Yes. Juniper's QFX Series hardware milestones page gives two sets of dates for the models on this page. QFX5100-48S, 48T and 24Q models: end of life announced 30 April 2021, last order 1 July 2022, end of support 1 July 2027. QFX5100-96S models: announced 25 May 2022, last order 31 December 2022, end of support 31 December 2027.
What is the difference between AFO and AFI on a QFX5100?: Airflow direction. Air Out (AFO) draws air in at the port side and exhausts it past the power supplies and fans; Air In (AFI) runs the other way, from the power supply and fan side to the ports. Juniper notes that older switches called these front-to-back and back-to-front. Pick the direction that matches your hot and cold aisles; mixing directions in one chassis is not supported.
Can QFX5100 switches be stacked or built into a fabric?: Yes. Up to ten QFX5100 switches form a QFX Virtual Chassis managed as one device. A Virtual Chassis Fabric scales to 20 devices in a spine and leaf design, with up to four QFX5100 spines, and EX4300 switches can join as leaf devices.
What condition and warranty come with a Juniper QFX5100 switch from Townsend?: Each listing prints its own condition. Units sold as new, refurbished or used are bench tested before they are listed: every port and module slot is checked and the previous owner's configuration is erased. They are covered by the Townsend warranty from the date of delivery; if the hardware fails in normal use we repair it or replace it with a tested unit, and the length and terms are on our warranty page. Unused hardware can be returned within 30 days of delivery. Juniper software licences and support contracts are not part of our warranty.

Juniper QFX5100-96S-DC-AFI / QFX5100 switch, 96x SFP+/SFP ports (1/10GbE), 8x QSFP+ ports (40GbE, breakout-capable to 4x10GbE each), up to 104x 10GbE with breakout, 2.56 Tbps throughput, dual redundant 850W DC power supplies, back-to-front airflow, 2RU

WHAT'S INCLUDED

One (1) Juniper QFX5100-96S-DC-AFI. Includes a rack-mount kit and the power cables to match the switch.

CONDITION & TESTING

Condition: Used, Tested & Guaranteed QFX5100-96S-DC-AFI was tested by Townsend Networks technicians before listing. The test process is on the testing process.