Juniper QFX5200 User Manual

Cable Specicaons 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 mulmode ber crossover cables with socket MPO/UPC connectors. The
ber can be either OM3 or OM4. These cables are not sold by Juniper Networks.
CAUTION: To maintain agency approvals, use only a properly constructed, shielded
cable.
TIP: 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 32 on page 77 describes the signals on each ber. Table 33 on page 78 shows the pin-to-pin
connecons for proper polarity.
Table 32: QSFP+ and QSFP28
Opcal Module Receptacle Pinouts
Fiber Signal
1 Tx0 (Transmit)
2 Tx1 (Transmit)
3 Tx2 (Transmit)
4 Tx3 (Transmit)
5 Unused
6 Unused
7 Unused
77

Juniper QFX5200 Specifications

General

Brand	Juniper
Model	QFX5200
Category	Switch
Language	English