Juniper QFX5100 Switches

Juniper QFX5100 part numbers

End of sale and support

Questions and answers

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.

What is the difference between the QFX5100-48S and the QFX5100-48T?

The 48S has 48 SFP+ ports for 10GbE optics or direct attach cables. The 48T has 48 10GBASE-T copper RJ-45 ports. Both have six 40GbE QSFP+ ports.

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.

Questions buyers ask

Is the hardware tested before it ships?

Yes. Every unit (new-excess, used, or refurbished) is bench-tested in-house by certified technicians before it is listed, and re-verified before it ships. See our Testing Process page for the details.

How fast do orders ship?

Orders placed by 12pm ship the same business day. Overnight shipping is available across the US, and we deliver worldwide.

Do you buy used equipment?

Yes. Buying and liquidating surplus gear is half our business. We buy Juniper, Arista, Brocade and Cisco hardware for cash, wire, or trade-in credit, arrange pickup, and process within 48 hours of receipt.

How do quotes work for unpriced items?

High-ticket and bulk items are quote-driven. Send the part number and quantity through the quote form, chat, or phone and a human who knows the hardware will come back with a firm price, typically the same business day.