API Guide

● 40g-1x — Set a QSFP28 port to use with a QSFP+ 40GE transceiver.
● 25g-4x — Split a QSFP28 port into four 25GE interfaces.
● 10g-4x — Split a QSFP28 or QSFP+ port into four 10GE interfaces
Default Not configured
Command Mode CONFIGURATION
Usage
Information
● Each breakout interface operates at the configured speed; for example, 10G, 25G, or 50G.
● The no interface breakout node/slot/port command resets a port to its default speed:
40G or 100G.
● To configure breakout interfaces on a unified port, use the mode {Eth | FC} command in Port-
Group Configuration mode.
● On the MX9116n Fabric Engine and MX5108n Ethernet switch, the backplane server-facing ports do
not support the interface breakout command. In show inventory media output, the status
category of the backplane ports is displayed as FIXED.
● On the S4148U-ON platform, ensure that you use the same breakout mode as you have configured on
the peer interface. For example, if you have explicitly configured the interface on the peer device as
10g-4x, use the same configuration on your switch.
Example
OS10(config)# interface breakout 1/1/41 map 10g-4x
Supported
Releases
10.2.2E or later
interface ethernet
Configures a physical Ethernet interface.
Syntax
interface ethernet node/slot/port:subport
Parameters node/slot/port:subport — Enter the Ethernet interface information.
Default Not configured
Command Mode CONFIGURATION
Usage
Information
The no version of this command deletes the interface.
Example
OS10(config)# interface ethernet 1/1/10:1
OS10(conf-if-eth1/1/10:1)#
Supported
Releases
10.2.0E or later
interface loopback
Configures a Loopback interface.
Syntax
interface loopback id
Parameters id — Enter the Loopback interface ID number, from 0 to 16383.
Default Not configured
Command Mode CONFIGURATION
Usage
Information
The no version of this command deletes the Loopback interface.
288 Interfaces