Cable Specifications For Qsfp+ And Qsfp28 Transceivers; Table 24: Qsfp+ Mpo Cable Signals - Juniper QFX5200 Hardware Manual

QFX5200 Switch Hardware Guide
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Cable Specifications for QSFP+ and QSFP28 Transceivers

Table 24: QSFP+ MPO Cable Signals

Fiber
1
2
3
4
5
44
(JTAC) can help you diagnose the source of the problem. Your JTAC engineer
might recommend that you check the third-party optic or cable and potentially
replace it with an equivalent Juniper Networks optic or cable that is qualified
for the device.
NOTE: For interoperability with other QFX Series switches, ensure
auto-negotiation on the QFX5200 is disabled.
QFX5200-32C Port Panel on page 7
The 40-Gigabit Ethernet QSFP+ and 100-Gigabit Ethernet QSFP28 transceivers that are
used in QFX Series and EX4600 switches use 12-ribbon multimode fiber crossover cables
with female MPO/UPC connectors. The fiber 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 24 on page 44 describes the signals on each fiber.
pin-to-pin connections for proper polarity.
Signal
Tx0 (Transmit)
Tx1 (Transmit)
Tx2 (Transmit)
Tx3 (Transmit)
Unused
Table 25 on page 45 shows the
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