To reduce fan speed on an Arista switch, use the environment fan-speed override percent command in global configuration mode, where percent is a value between 30 and 100.

Command Syntax: switch(config)#

environment fan-speed override 30

(sets fans to 30% of maximum speed).

Restoring Default: Use

environment fan-speed auto

to return to automatic thermal control.

Verification: Check current status with

show environment cooling