Reference Guide

Table Of Contents
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 DAC cable 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. The breakout auto-
configuration feature 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
------------------------------------------------------------------
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 1/1/25 down 0 auto A 1 -
Eth 1/1/29 down 0 auto A 1 -
After you enter feature auto-breakout and plug a breakout cable in Ethernet port 1/1/25:
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 1/1/25:1 down 0 auto A 1 -
Eth 1/1/25:2 down 0 auto A 1 -
Eth 1/1/25:3 down 0 auto A 1 -
Eth 1/1/25:4 down 0 auto A 1 -
Eth 1/1/29 down 0 auto A 1 -
Forward error correction
Forward error correction (FEC) is used to enhance data reliability.
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Interfaces