API Guide

Configure breakout mode
Using a supported breakout cable, you can split a 40GE QSFP+ or 100GE QSFP28 Ethernet port into separate breakout
interfaces. All breakout interfaces have the same speed. You can set a QSFP28 port to operate in 40GE mode with a QSFP+
transceiver.
interface breakout node/slot/port map {10g-4x | 25g-4x | 40g-1x | 50g-2x |
100g-1x}
● node/slot/port — Enter the physical port information.
● 10g-4x — Split a QSFP28 or QSFP+ port into four 10G interfaces.
● 25g-4x — Split a QSFP28 port into four 25G interfaces.
● 40g-1x — Set a QSFP28 port to use with a QSFP+ 40G transceiver.
● 50g-2x — Split a QSFP28 port into two 50G interfaces.
● 100g-1x — Reset a QSFP28 port to 100G speed.
To configure an Ethernet breakout interface, use the interface ethernet node/slot/port:subport command in
CONFIGURATION mode.
Each breakout interface operates at the configured speed. Use the no version of the interface breakout command to
reset 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.
NOTE: You cannot configure the 40G ports 13, 14, 15, 16, 29, 30, 31, and 32 to split into four 10G interfaces on the S6010
platform.
Configure interface breakout
OS10(config)# interface breakout 1/1/7 map 10g-4x
Display interface breakout
OS10# show interface status
------------------------------------------------------------------
Port Description Status Speed Duplex Mode Vlan Tagged-Vlans
------------------------------------------------------------------
Eth 1/1/1 down 0 auto -
Eth 1/1/2 down 0 auto A 1 -
Eth 1/1/7:1 down 0 auto A 1 -
Eth 1/1/7:2 down 0 auto A 1 -
Eth 1/1/7:3 down 0 auto A 1 -
Eth 1/1/7:4 down 0 auto A 1 -
Eth 1/1/25 down 0 auto A 1 -
Breakout auto-configuration
You can globally enable front-panel Ethernet ports to automatically detect SFP pluggable media in a QSFP+ or QSFP28 port.
The port autoconfigures breakout interfaces for media type and speed. For example, if you plug a 40G direct attach cable (DAC)
with 4x10G far-side transceivers into a QSFP28 port, the port autoconfigures in 10g-4x Interface-breakout mode.
RJ-45 ports and ports that are members of a port group do not support breakout auto-configuration. Breakout auto-
configuration is disabled by default.
Enable breakout auto-configuration
OS10(config)# feature auto-breakout
Display breakout auto-configuration
Before you plug a cable in Ethernet port 1/1/25:
OS10# show interface status
268
Interfaces