Juniper ACX5448-D Hardware Manual page 33

The optical interface to et mapping is displayed in the following table:
ot- interface
ot-0/2/0
ot-0/2/1
Default Port Configuration on ACX5448-D
By default (factory-default configuration), when you power on an ACX5448-D router, the following port
combinations are available:
36 SFP+ ports (ports 0 through 35)—These ports can operate as native 10-Gigabit Ethernet interfaces
or as 1-Gigabit Ethernet interfaces when you use 1-gigabit optics.
Two QSFP28 ports (36 and 37)—The interface for port 36 is not created. However, you can configure
port 37 as native 100-Gigabit or 40-Gigabit Ethernet interfaces, or channelize these ports into four
25-Gigabit Ethernet or 10-Gigabit Ethernet interfaces, respectively, by using CLI configuration and
breakout cables.
Two CFP2 ports (38 and 39)—You can configure each of the CFP2 ports as a 200-Gigabit Ethernet port.
Multiplexing on ACX5448-D Routers
As we have seen in the preceding sections, the et-0/1/0 interface is created for QSFP28 port 36 and the
ot-0/2/0 interface is created for CFP2 port 38. The ot-0/2/0 interface is mapped to the et- interfaces
et-0/2/0 and et-0/2/1.
The QSFP28 port 36 (interface et-0/1/0) and the CFP2 port 38 (interface et-0/2/1) operate as multiplexer
(also called mux) ports.
Port Number
Port 38
Port 39
Modulation Format
QPSK-100G
8QAM-200G
16QAM-200G
QPSK-100G
8QAM-200G
16QAM-200G
Mapped et interface(s)
et-0/2/0
et-0/2/0
et-0/2/1
et-0/2/0
et-0/2/1
et-0/2/2
et-0/2/2
et-0/2/3
et-0/2/2
et-0/2/3
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