use SFP+ DAC cables and 10-Gbps active optical cables (AOC) in any access port. Starting in Junos OS
Release 18.3R1, the 10-GbE ports also support 100 Mbps.
The remaining 4 QSFP28 ports (48 through 51) support speeds of 40 GbE or 100 GbE. Each port can be
configured as an independent 100-GbE port or as an independent 40-GbE port. These port are usually
used as uplinks or Virtual Chassis Ports (VCP) on QFX5110 Virtual Chassis or Virtual Chassis Fabric (VCF).
In 40-GbE mode, these ports can be channelized using QSFP+ to SFP+ DAC breakout (DACBO) cables.
The port panel also provides PTP connections to a grandmaster clock (requires Junos OS Release 18.1R1).
There are also 10-MHz pulses-per-second (PPS) SubMiniature B (SMB) input and output connections to
measure the timing drift to and from the grandmaster clock.
Figure 4 on page 16 shows the port panel of the QFX5110-48S.
Figure 4: QFX5110-48S Port Panel
4—1— 4 QSFP28 portsElectrostatic discharge (ESD) terminal
5—2— Output clock at 10 MhzRJ-45 connection to grandmaster clock
6—3— 1 pulse per second (PPS) output connection48 SFP+ ports
Network Ports
CAUTION: Do not install 1GbE copper transceivers (such as QFX-SFP-1GE-T) directly
above or below another 1GbE copper transceiver. Use only the top row or bottom
row to avoid damage to the device caused by some types of copper transceivers when
the transceivers are installed above or below each other. However, if you are using
copper transceivers with the OEM part number FCLF8521P2BTL-J1 printed on the
transceiver label, you can install the transceivers in any port with no restrictions. For
devices that support 10GbE copper transceivers, there is no similar restriction.
The QFX5110-48S device ports (0 to 47) support:
•
10-Gbps SFP+ transceivers
•
1-Gbps SFP transceivers
16
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