Juniper QFX3500, Hardware Documentation

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CAUTION: Use only the top four ports or the bottom four ports for SFP
transceivers. Because SFP transceivers are larger than SFP+ transceivers, attempting
to stack SFP transceivers can cause internal damage to the module.
Figure 12: EX4600-EM-8F Expansion Module
NOTE: The EX4600-EM-8F is not supported on the QFX5100-24Q running in QFabric
systems.
The QFX5100-24Q is configured for the QFX-EM-4Q by default, but any combination of the two modules
is supported. Expansion modules can be hot-inserted or hot-removed. However, when an EX4600-EM-8F
is inserted instead of the default QFX-EM-4Q, the new configuration causes the interfaces to temporarily
go down. Likewise, when an EX4600-EM-8F is running on the QFX5100-24Q and it is swapped with a
QFX-EM-4Q, the interfaces temporarily go down, which can cause a short disruption in traffic.
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QFX5100-24Q-AA
As shown in Figure 13 on page 29 , the QFX5100-24Q-AA is a 1 U, top-of-rack, 40-Gigabit Ethernet
QSFP+ switch with 24 high-density QSFP+ ports. Each QSFP+ port can be configured to support
40-Gigabit Ethernet or as a set of 4 independent 10-Gigabit Ethernet ports. The QFX5100-24Q-AA can
also be configured to support twenty-four 40-Gigabit Ethernet interfaces or ninety-six 10-Gigabit
Ethernet interfaces using breakout cables (channelization mode) with 1280 Gbps output. The switch
can be ordered with either ports-to-FRUs or FRUs-to-ports airflow and with AC or DC power supplies.
The QFX5100-24Q switch provides full duplex throughput of 2.56 Tbps.
The QFX5100-24Q-AA module bay can accommodate a single Packet Flow Accelerator (PFA) double-wide
expansion module (QFX-PFA-4Q) or two single-wide optional expansion modules (two or one each of
QFX-EM-4Q and EX4600-EM-8F). The QFX-PFA-4Q, which features a high-performance
field-programmable gate array (FPGA), provides four additional QSFP+ ports to the chassis. Each
QFX-EM-4Q adds four QSFP+ ports to the chassis and each EX4600-EM-8F adds eight 10-Gigabit SFP+
ports to the chassis. The QFX-EM-4Q ports can also be configured as either access ports or uplink ports,
but only ports 0 and 2 can be channelized using port mode. For full details on the different port
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