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Table 5: Default Behavior of 100 Gigabit Ethernet Ports
100 Gigabit Ethernet QSFP28 Ports
Port
29
Port
28
Port
30
Port
31
Copyright © 2019, Juniper Networks, Inc.
The following system modes are available on the QFX5110-32Q:
Default mode (from Junos OS Release 17.2R1 up to Junos OS Release 18.1R1)
All 32 QSFP+ and QSFP28 ports on the switch are configured for 40-Gigabit Ethernet
only. All ports are supported as access or uplink ports, but cannot be channelized.
Default mode (Junos OS 18.1R1 and later)
All 32 ports are supported as access or uplink ports and configured for 40-Gigabit
Ethernet. When ports
through
0
breakout cable is detected, the system converts the port into 4 independent 10-Gigabit
Ethernet ports. When a 100-Gbps transceiver is inserted into QSFP28 ports
, the port forms a port group and disables two QSFP+ ports. See
31
CAUTION:
As shown in
be available for channelization if you have populated the 100 Gbps QSFP28
ports.
Flexi-pic mode (from Junos OS Release 17.2R1 up to Junos OS Release 18.1R1):
Ports
through
of the switch are configured for 40-Gigabit Ethernet and can be
0
19
channelized to 4 independent 10-Gigabit Ethernet ports.
Ports
though
are disabled. See
20
27
Ports
through
are configured as 100-Gigabit Ethernet.
28
31
CAUTION:
Take care when changing the channelization mode from Flexi-pic
to default. If you have existing ports that are channelized in Flexi-pic mode,
remove the channelization from the interface before changing the system
mode. Changing the Flexi-pic mode to the default mode with channelized
ports causes the ports to go down, log a system log error, and remain down.
You must manually remove the channelization configuration on the ports
to bring the ports up in default mode. Because there can be a slight loss of
data while the FPC reboots, we recommend that you only configure the
changes during a maintenance window for this release.
are configured for 40-Gigabit Ethernet and a 4x10G
23
Disables 40 Gigabit Ethernet QSFP+ Ports
Port
and
20
21
Port
and
22
23
Port
and
24
25
Port
and
26
27
Table 5 on page
Table 5 on page
Chapter 1: Overview
28
Table 5 on page
31, ports
through
might not
20
23
31.
through
31.
31
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