Figure 35: All Ports Are Enabled For 40-Gigabit Ethernet By Default; Figure 36: 100-Gigabit Ethernet Ports; Figure 37: 100-Gigabit Ethernet Port Disables Two Associated 40-Gigabit; Ethernet Ports - Juniper QFX10016 Hardware Manual

Chapter 7: Line Card Components and Descriptions
Every second and sixth port in a 6XQSFP cage on a QFX10000-36Q 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 Figure 35 on page 57 for a closeup view of a 6XQSFP+ cage. When a
40-Gigabit Ethernet transceiver is inserted into a 100-Gigabit Ethernet port, the port
recognizes the 40-Gigabit Ethernet port speed. When a 100-Gigabit Ethernet transceiver
is inserted into the port and enabled in the CLI, the port recognizes the 100-Gigabit
Ethernet speed and disables two adjacent 40-Gigabit Ethernet ports. See
Figure 36 on page 57 and Figure 37 on page 57. You can also use an 100-Gigabit Ethernet
transceiver and run it at 40-Gigabit Ethernet by using the CLI to set the port speed to
40-Gigabit Ethernet.
Figure 35 on page 57 shows the location of QSFP+ ports for the QFX10000-36Q.

Figure 35: All Ports Are Enabled for 40-Gigabit Ethernet by Default

Figure 36: 100-Gigabit Ethernet Ports

Figure 37: 100-Gigabit Ethernet Port Disables Two Associated 40-Gigabit

Ethernet Ports

The 40-Gigabit Ethernet ports can operate independently, be channelized into four
10-Gigabit Ethernet ports, or bundled with the next two consecutive ports and channelized
into twelve 10-Gigabit Ethernet ports as a port range. Only the first and fourth port in
each 6XQSFP cage are available to channelize a port range (see Figure 38 on page 58).
Copyright © 2017, Juniper Networks, Inc. 57