Juniper QFX10002 Hardware Manual page 35

• 40-Gigabit Ethernet QSFP+ transceivers
• 40-Gigabit Ethernet QSFP+ DAC cables
• 40-Gigabit Ethernet QSFP+ to 10-Gigabit Ethernet SFP+ DACBO cables
• 10-Gigabit Ethernet SFP+ transceivers
• 10-Gigabit Ethernet DAC cables
100-Gbps Operation and Configuration
Every second and sixth port in a 6XQSFP cage on a QFX10002 supports 100-Gigabit Ethernet using
QSFP28 transceivers. These 100-Gigabit Ethernet ports work either as 100-Gigabit Ethernet or as 40-
Gigabit Ethernet, but are recognized as 40-Gigabit Ethernet by default. See
close up view of a 6XQSFP+ cage. The 100-Gigabit Ethernet are designated by a fine black line
underneath the port. See
into a 100-Gigabit Ethernet port, the port recognizes the 40-Gigabit Ethernet port speed. However,
when an 100-Gigabit Ethernet transceiver is inserted into the port, the transceiver is not automatically
recognized and is not seen in the output of the show chassis hardware command. To enable 100-Gigabit
Ethernet on the marked ports, use the set chassis fpc command. For example, to enable port 71 for 100
Gbps speeds:
[edit]
user@switch#
set chassis fpc 0 pic 0 port 71 speed 100g
The port then recognizes the 100-Gigabit Ethernet speed and disables two adjacent 40-Gigabit Ethernet
ports. See Figure 15 on page
Figure 13 on page 26 shows the location of QSFP+ ports for the QFX10002-72Q.
Figure 13: All Ports are 40-Gigabit Ethernet by Default
Figure 14 on page 27. When a 40-Gigabit Ethernet transceiver is inserted
27.
Figure 13 on page 26 for a
26