Juniper QFX5120 Series Hardware Manual page 21

Figure 2 on page 23 shows the rear view of the QFX5120-32C switch.
Figure 2: QFX5120-32C - Rear View
Figure 3 on page 23 shows the front view of the QFX5120-48Y switch.
Figure 3: QFX5120-48Y - Front View
Figure 4 on page 23 shows the front view of the QFX5120-48Y switch.
Figure 4: QFX5120-48Y - Rear View
The QFX5120-32C offers 32 quad SFP28 (QSFP28) or 32 quad SFP+ (QSFP+) ports. Each of the 100-GbE
ports can also be configured as 4x25GbE ports using breakout cables, enabling the QFX5120-32C to also
be used as a high-density 25-GbE top-of-rack switch.
The QFX5120-48Y switch is a 25-Gigabit Ethernet small form-factor pluggable (SFP28) switch with 48
SFP28 ports and eight 100-Gbps quad small form-factor pluggable (QSFP28) ports. Each SFP28 port can
operate as a native 25-Gigabit Ethernet port, 10-Gigabit Ethernet port, and can act as a 1-Gbps port based
on the transceivers inserted. Each of the eight uplink ports can operate as either 100-G or 40-G based on
the optics used.
You can use breakout cables to configure the ports as per your requirement in QFX5120-32C and
QFX5120-48Y switches.
You can configure a 40-Gigabit Ethernet port into 4 independent 10-Gigabit Ethernet ports using four
10-Gigabit breakout cables.
You can configure a 100-Gigabit Ethernet port into 2 independent 50-Gigabit Ethernet ports using two
50-Gigabit breakout cables.
You can configure a 100-Gigabit Ethernet port into 4 independent 25-Gigabit Ethernet ports using four
25-Gigabit breakout cables.
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