Table 97: Qsfp+ And Qsfp28 Optical Module Receptacle Pinouts; Table 98: Qsfp+ Mpo Fiber-Optic Crossover Cable Pinouts - Juniper QFabric QFX3000-G Hardware Documentation

Table 97: QSFP+ and QSFP28 Optical Module Receptacle Pinouts

Fiber
1
2
3
4
5
6
7
8
9
10
11
12

Table 98: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts

Pin
1
2
Copyright © 2018, Juniper Networks, Inc.
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 97 on page 267 describes the signals on each fiber.
pin-to-pin connections for proper polarity.
Signal
Tx0 (Transmit)
Tx1 (Transmit)
Tx2 (Transmit)
Tx3 (Transmit)
Unused
Unused
Unused
Unused
Rx3 (Receive)
Rx2 (Receive)
Rx1 (Receive)
Rx0 (Receive)
Table 98 on page 267
Pin
12
11
Chapter 12: Cable Specifications
shows the
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