Home › Parts › Fortinet part numbers

FN-TRAN-QSFP+SR: Fortinet 40GBASE-SR4 QSFP+ Optical Transceiver Module

Fortinet FN-TRAN-QSFP+SR Transceiver40GbEQSFP+
FortinetTransceivers

Also listed as: SP-FG-40GE-SR, FG-TRAN-QSFP+SR

The Fortinet FN-TRAN-QSFP+SR is a 40GBASE-SR4 QSFP+ optical transceiver providing 40 Gigabit Ethernet connectivity up to 150 meters over OM4 multimode fibre for enterprise firewalls.

Buy FN-TRAN-QSFP+SRSell yours

Specifications

Part numberFN-TRAN-QSFP+SR
BrandFortinet
TypeTransceivers
Other numbersSP-FG-40GE-SR, FG-TRAN-QSFP+SR
Statuscurrent
Form factorQSFP+
Speed40GbE
Wavelength nm850
ConnectorMPO-12
Cable typeMultimode Fibre
Max distance m150

About the FN-TRAN-QSFP+SR

The Fortinet FN-TRAN-QSFP+SR optical transceiver provides high density 40 Gigabit Ethernet connectivity for enterprise core firewall aggregation and data center backbone connections. Operating over four parallel optical lanes at 850 nanometers on multimode fibre, it supports link lengths up to 100 meters on OM3 and 150 meters on OM4 optical cabling.

Compatibility

Compatible with Fortinet FortiGate 1000D, 1200D, 1500D, 2000E, 2500E, 3000D, 3700D, 3800D, and 3960E firewalls equipped with QSFP+ ports. It supports native 40GbE fabric links as well as channelized 4x10GbE breakout mode configured via FortiOS command line interface.

How to identify a genuine unit

Constructed in a QSFP+ metallic casing with a beige or black pull tab release mechanism for port extraction. The manufacturing label displays Fortinet branding, part number FN-TRAN-QSFP+SR, alternate assembly code SP-FG-40GE-SR, individual serial number barcode, and optical laser safety warnings.

Buying used

Inspect the MPO internal optical guide pins and ferrule face with an MPO fiber scope to ensure no dust or scratches exist on any of the optical fiber lanes. Test on a QSFP+ firewall port to ensure all four optical lanes synchronize and report balanced optical power levels.

Fits these models

Works together

How the Fortinet FN-TRAN-QSFP+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 Fortinet

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Fortinet has tested with the Fortinet FN-TRAN-QSFP+SR.

FAQ

What optical connector is used on FN-TRAN-QSFP+SR?

It uses an industry standard 12-fiber female MPO optical connector interface.

Can FN-TRAN-QSFP+SR break out into four 10GbE links?

Yes, using an MPO to four duplex LC breakout cable, it supports four 10GBASE-SR links in FortiOS.

Buying or selling FN-TRAN-QSFP+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.

Buy FN-TRAN-QSFP+SRSell yours

Sources