Dell EMC SmartFabric OS10 User Guide Release 10.5.0

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

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    -