HPE 100GB Transceivers - QSFP28 - Refurbished, Used, New

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HPE 100G QSFP28 transceivers plug into the 100 Gigabit ports of HPE and Aruba switches, including the Aruba CX 8300 and 8400 series, Aruba 8320 and 8325, and HPE FlexFabric data center switches, to carry 100G over fiber between racks, rows and buildings. The optic you need is set by the fiber you have and the distance: multimode MPO for inside a row, parallel single-mode for a few hundred meters, and duplex single-mode LC for links across a campus. NetworkTigers sells HPE and Aruba 100G QSFP28 optics refurbished, used and new. Every transceiver is tested in a live port before it ships so it links up when it arrives.

HPE 100G QSFP28 optics by reach

Part number	Reach, fiber and connector	Shop
JL309A	100GBASE-SR4, multimode OM4 fiber, MPO connector, 100 m; four parallel 25G lanes at 850 nm	JL309A
Q8J73A	Parallel single-mode, MPO connector, 1310 nm, 500 m; four lanes over an 8-fiber single-mode MPO cable	Q8J73A
R1N46A	100GBASE-CWDM4, duplex single-mode fiber, LC connector, 2 km; four wavelengths multiplexed onto one fiber pair	R1N46A
JL310A	100GBASE-LR4, duplex single-mode fiber, LC connector, 10 km; four wavelengths around 1310 nm	JL310A
MPO optics	Parallel optics that need a 12-fiber or 8-fiber MPO trunk, multimode for JL309A and single-mode for Q8J73A; also the optics that support 4x 25G breakout	JL309A \| Q8J73A
LC duplex optics	Run 100G over the same two-strand single-mode fiber used for 10G and 40G LR links, so existing LC patching carries over	R1N46A \| JL310A
Related HPE optics	Other HPE and Aruba transceivers and cables	All HPE optics \| 40G \| 10G \| DAC cables \| AOC cables

Which HPE 100G transceiver do I need?

Multimode fiber, under 100 m: JL309A SR4 over OM4 with an MPO trunk. Over OM3 the reach drops to about 70 m. Within a rack, a DAC or AOC cable is cheaper than two optics.
Single-mode fiber, up to 500 m: Q8J73A parallel single-mode over an 8-fiber single-mode MPO cable. It is the lowest-cost single-mode option but needs MPO cabling, not LC.
Single-mode fiber, up to 2 km: R1N46A CWDM4 over ordinary duplex LC single-mode. The usual pick for building-to-building links on a campus.
Single-mode fiber, up to 10 km: JL310A LR4 over duplex LC single-mode, for longer campus or metro runs.
Both ends must match: SR4, parallel single-mode, CWDM4 and LR4 do not interoperate with each other, so order the same type for both ends of the link, and check that the switch and the software version you run support the optic in that port.

Frequently asked questions

Does a 100G QSFP28 optic work in a 40G QSFP+ port?
No. The QSFP28 form factor fits the slot, but a 40G port does not drive the 25G lanes a 100G optic uses. Use the 40G optics for QSFP+ ports; some 100G QSFP28 ports can be set to 40G and then accept QSFP+ optics.

Will a JL309A or Q8J73A work for 4x 25G breakout?
Parallel optics run four lanes over MPO, so with an MPO-to-4x LC breakout cable and matching 25G SFP28 optics at the far end, a port set to breakout mode can feed four 25G links. Check that the exact switch port supports breakout in the software version you run.

Why is the MPO polarity on a 100G link important?
Parallel optics send on four fibers and receive on four, so the trunk must cross transmit to receive end to end. A Type B (crossed) MPO cable is the normal choice for a direct optic-to-optic link; a wrong polarity shows up as a port that stays down with good light levels.

NetworkTigers has sold enterprise network equipment since 1996. Every transceiver carries the NetworkTigers 365-day warranty. Need a quantity or a reach that is not listed? Ask us for a quote.