100G QSFP28 InfiniBand EDR
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100G QSFP28 InfiniBand EDR Overview
The 100G QSFP28 InfiniBand EDR category contains one multimode optical transceiver module for 100Gb/s links in InfiniBand EDR networks. The module uses the QSFP28 form factor, 850nm transmission, an MTP/MPO-12 UPC connector, and DOM monitoring. Designed for SB7800 switches and ConnectX-5 adapters, it integrates with compute and storage infrastructure to support high-performance interconnections. The category includes one multimode transceiver and no single-mode models, covering transmission distances up to 100m over multimode fiber.
QSFP-EDR-SR4 is a 100GBASE-SR4 multimode optical transceiver for 100Gb/s InfiniBand EDR links. It operates at 850nm over multimode fiber and uses an MTP/MPO-12 UPC connector for parallel optical transmission across four lanes. Packaged in the QSFP28 form factor with DOM support, the module provides transmission distances up to 100m and is designed for connections involving SB7800 switches and ConnectX-5 adapters within compute and storage infrastructure.
- Q1: What is the native link rate and optical channel configuration of QSFP-EDR-SR4?
100Gb/s. QSFP-EDR-SR4 carries the InfiniBand EDR link over four parallel optical channels, with each channel operating at up to 25.78125 GBd in the QSFP28 form factor.
- What transmission distances does QSFP-EDR-SR4 support over OM3 and OM4 multimode fiber?
Up to 70m on OM3 and 100m on OM4 at 100Gb/s. QSFP-EDR-SR4 uses 850nm parallel multimode optical transmission.
- Which fiber patch cable should be used between two QSFP-EDR-SR4 transceivers?
Use a female-to-female MTP/MPO-12 UPC multimode Type B crossover patch cable. Eight fibers are active—four for transmission and four for reception—while the four center fiber positions are unused.
- Can QSFP-EDR-SR4 connect an SB7800 switch to a ConnectX-5 adapter at full EDR speed?
Yes. QSFP-EDR-SR4 is designed for 100Gb/s InfiniBand EDR links between compatible QSFP28 ports on SB7800 switches and ConnectX-5 adapters, using the specified multimode fiber cabling.
- Which operating values can network administrators monitor through DOM on QSFP-EDR-SR4?
DOM monitors receive optical power, transmit optical power, and transmit bias current for each lane, together with module supply voltage and case temperature. Warning and alarm thresholds are also available.
- Does the 100G QSFP28 InfiniBand EDR category include a single-mode transceiver for links longer than 100m?
No. The category contains only QSFP-EDR-SR4, an 850nm multimode transceiver with a maximum supported reach of 100m over OM4 fiber.
