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Townsend Networks
QFX5100-24Q-D-3AFI Juniper Switch, Back-to-Front, Used, 24x 40GbE QSFP+

QFX5100-24Q-D-3AFI Juniper Switch, Back-to-Front, Used, 24x 40GbE QSFP+

Condition
Used, tested & guaranteed
WARRANTY & RETURNS
QFX5100-24Q-D-3AFI 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

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

The Juniper QFX5100-24Q-D-3AFI is a switch from the Juniper QFX5100 family with 24 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 cable(s) to match.

HOW IT DIFFERS
QFX5100-24Q-D-3AFI is the 24-port QSFP+ model with 2 expansion slots, dual SFP/RJ-45 management ports, redundant DC power supplies and back-to-front airflow, as Juniper's ordering table words it. The 24Q chassis weighs 21.6 lb in the datasheet. Its sister QFX5100-48S-D-3AFI keeps the DC power, the management ports and the back-to-front airflow but swaps the 24 QSFP+ ports for 48 SFP+/SFP ports and 6 QSFP+ ports, at 21.8 lb.
Model
QFX5100-24Q-D-3AFI
Network Ports
24 × 40GbE
Connectors
QSFP+
Type
Switch
Condition
Used, tested & guaranteed

Technical details

BrandJuniper
FamilyQFX5100
LayerLayer 3 (managed)
Operating systemJunos OS
Rack units1U
AirflowBack-to-front (AFI)
Power inputDC
Throughput2.56 Tbps / 1.44 Bpps

Juniper datasheet

Testing process

End of sale and support

ModelAnnouncedEnd of saleEnd of supportNotice
Juniper QFX5100 (24Q, 48S, 48T)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.

QFX5100-24Q-D-3AFI 24x 40GB QSFP+ 2x Mod Slots B-F Air (DC) Switch

WHAT'S INCLUDED

One (1) Juniper QFX5100-24Q-D-3AFI. Includes a rack-mount kit and the power cable(s) to match the switch.

CONDITION & TESTING

Condition: Used, Tested & Guaranteed QFX5100-24Q-D-3AFI was tested by Townsend Networks technicians before listing. The test process is on the testing process.

Selling your Juniper QFX5100-24Q-D-3AFI? We buy used network gear.

Questions about the QFX5100-24Q-D-3AFI? Call 415-626-4231 or email sales@townsendnetworks.com.

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