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QFX-SFP-10GE-SR: Juniper QFX 10GBASE-SR SFP+ Optical Transceiver Module

Juniper QFX-SFP-10GE-SR Transceiver10GbESFP+
JuniperTransceivers

Also listed as: 740-031980, FTLX8574D3BCL-J1

The Juniper QFX-SFP-10GE-SR is a data center grade 10GBASE-SR SFP+ optical transceiver providing 10 Gigabit Ethernet connectivity up to 300 meters over OM3 multimode fibre.

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Specifications

Part numberQFX-SFP-10GE-SR
BrandJuniper
TypeTransceivers
Other numbers740-031980, FTLX8574D3BCL-J1
Statuscurrent
Form factorSFP+
Speed10GbE
Wavelength nm850
ConnectorLC duplex
Cable typeMultimode Fibre
Max distance m300

About the QFX-SFP-10GE-SR

The Juniper QFX-SFP-10GE-SR optical transceiver is engineered for dense top-of-rack data center switching and spine leaf fabric architectures. Delivering 10 Gigabit Ethernet over multimode optical fibre up to 300 meters on OM3 and 400 meters on OM4, it provides low latency server and storage connectivity with low electrical power consumption.

Compatibility

Compatible with Juniper QFX5100, QFX5110, QFX5120, QFX5200 Series switches, as well as MX Series routers and high performance SRX firewalls. It supports digital optical diagnostics under Junos OS for monitoring transceiver operational health and optical integrity.

How to identify a genuine unit

Constructed in an SFP+ form factor metal casing with a black optical extraction latch bail indicating 850nm short-reach optical transceivers. The product label states Juniper Networks branding, part number QFX-SFP-10GE-SR, assembly code 740-031980, and serial number.

Buying used

Inspect optical transmit and receive bores with a fiber microscope to verify lack of contamination. Connect to an active QFX switch cage to confirm that Junos OS identifies the part without optics alarms and that receive optical power metrics remain within factory tolerances.

Fits these models

Works together

How the Juniper QFX-SFP-10GE-SR connects to servers, storage and the network: 3 ways, with the hardware on each path.

iSCSI and NVMe/TCP over EthernetFile storage (NFS and SMB)Hyperconverged cluster

iSCSI and NVMe/TCP over Ethernet

Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.

Adapters for the server

Switches

Storage

iSCSI and NVMe/TCP over Ethernet: how it fits together

File storage (NFS and SMB)

Front-end ports face the clients; back-end ports (on scale-out systems) connect the nodes to each other and need their own switch pair.

Adapters for the server

Switches

Storage

File storage (NFS and SMB): how it fits together

Hyperconverged cluster

Plan at least two 25GbE ports per node to two switches; all-NVMe clusters often move to 100GbE.

HCI nodes

Adapters for the server

Switches

Hyperconverged cluster: how it fits together

Plan and size it

Check compatibility with Juniper

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Juniper has tested with the Juniper QFX-SFP-10GE-SR.

FAQ

What switches are supported by QFX-SFP-10GE-SR?

It is optimized for Juniper QFX5100, QFX5110, QFX5120, and QFX5200 data center switches.

What is the operating wavelength?

It operates at an 850 nanometer optical wavelength over multimode fibre.

Buying or selling QFX-SFP-10GE-SR?

New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.

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Sources