Cable Specifications For Qsfp+ And Qsfp28 Transceivers - Juniper QFX5110 Series Hardware Documentation

Virtual chassis fabric

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The transceivers support DOM even if they are installed in ports configured as Virtual

Chassis ports (VCPs).

Cable Specifications for QSFP+ and QSFP28 Transceivers

The 40-Gigabit Ethernet QSFP+ and 100-Gigabit Ethernet QSFP28 transceivers that are used in QFX

Series switches use 12-ribbon multimode fiber crossover cables with socket MPO/UPC connectors. The

fiber can be either OM3 or OM4. These cables are not sold by Juniper Networks.

Ensure that you order cables with the correct polarity. Vendors refer to these crossover

cables as key up to key up, latch up to latch up, Type B, or Method B. If you are using patch panels

between two QSFP+ or QSFP28 transceivers, ensure that the proper polarity is maintained

through the cable plant.

Table 35 on page 144

describes the signals on each fiber.

connections for proper polarity.

Table 35: QSFP+ and QSFP28 Optical Module Receptacle Pinouts

To maintain agency approvals, use only a properly constructed, shielded

Tx0 (Transmit)

Table 36 on page 145

shows the pin-to-pin

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