Applies to:
- Community SONiC 202012 or before
- Open Packet Broker NOS 2.1.0
Overview:
On Network Switches, Power Supply and Fans are components that provided power source and cooling system respectively. The number of Power Supplies and Fans installed on a switch vary across models, offering redundancy. Please refer to the datasheet of your switch to get more details.
Below is an image of the Innovium TL7-based 32x400G Switch that has two power supplies and seven fans. The power supplies and fans run in 1+1 and 6+1 redundancy modes respectively.
courtesy: servethehome.com
Command Reference and Sample Output
Power Supply
Fully Populated and Healthy Setup
sonic-cli# show platform psustatus
======================================================================================================================================
PSU Model Serial Hardware Revision Voltage (V) Current (A) Power (W) Status LED
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PSU 1 MTEF-PSF-AC-C MT2029X14878 A3 14.000 28.301 390.0 OK green
PSU 2 MTEF-PSF-AC-C MT2029X14877 A3 12.007 27.656 328.0 OK green
Failed State
One of the below reasons could report failure state on the command output for one power supply;
- Not Installed
- Installed but not plugged to power
- Faulty Power Cord
- Faulty Power Supply
sonic-cli# show platform psustatus
======================================================================================================================================
PSU Model Serial Hardware Revision Voltage (V) Current (A) Power (W) Status LED
======================================================================================================================================
PSU 1 N/A N/A N/A N/A N/A N/A NOT OK red
PSU 2 MTEF-PSF-AC-C MT2029X14877 A3 12.007 27.656 328.0 OK red
Fans
Fully Populated and Healthy Setup
sonic-cli# show platform fan
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ID DRAWER FAN SPEED% DIRECTION PRESENCE STATUS LED Timestamp
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1 drawer1 fan1 91 intake True OK green 20220324 03:18:25
2 drawer2 fan2 81 intake True OK green 20220324 03:18:25
3 drawer3 fan3 91 intake True OK green 20220324 03:18:25
4 drawer4 fan3 91 intake True OK green 20220324 03:18:25
5 drawer5 fan3 91 intake True OK green 20220324 03:18:25
6 drawer6 fan3 91 intake True OK green 20220324 03:18:25
7 drawer7 fan3 91 intake True OK green 20220324 03:18:25
8 N/A psu1_fan1 100 N/A True OK green 20220324 03:18:25
9 N/A psu2_fan1 100 N/A True OK green 20220324 03:18:25Failed State
One of the below reasons could report failure state on the command output for one power supply;
- Not Installed
- Failed Fan (Fan not spinning or reset)
- Failed or Not Installed Power Supply (for psu fan only)
sonic-cli# show platform fan
=========================================================================================
ID DRAWER FAN SPEED% DIRECTION PRESENCE STATUS LED Timestamp
=========================================================================================
1 drawer1 fan1 91 intake True OK green 20220324 03:18:25
2 drawer2 fan2 81 intake True OK green 20220324 03:18:25
3 drawer3 fan3 0 intake False NOT OK red 20220324 03:18:25
4 drawer4 fan3 91 intake True OK green 20220324 03:18:25
5 drawer5 fan3 91 intake True OK green 20220324 03:18:25
6 drawer6 fan3 91 intake True OK green 20220324 03:18:25
7 drawer7 fan3 91 intake True OK green 20220324 03:18:25
8 N/A psu1_fan1 0 N/A False NOT OK red 20220324 03:18:25
9 N/A psu2_fan1 100 N/A True OK green 20220324 03:18:25