C9410R - Line Card Priority During Single PSU Operation

[duongkngot2305]

I recently deployed a Cisco Catalyst 9410R chassis with 4 line cards, 2 SUP-2s, and 2x 3200AC power supplies. During a test, I observed that when one PSU is unplugged, the chassis remains operational, but only the SUPs and fans receive power, causing the line cards to shut down.
I'd like to configure the system to prioritize line card operation during scenarios with a single functional power supply. Ideally, one SUP would automatically shut down to ensure sufficient power delivery to the line cards.
Is there a configuration option to achieve line card prioritization during single PSU operation?

[Guilherme Lyra]

In regards to the supervisors, by default the chassis will reserve power to keep both modules running.

For defining the linecards priority, you can use the command power supply autolc priority 1 2 3 4 7 8 9 10 
In this example, linecard 1 shuts down last and linecard 10 will shutdown first, but you can change that order to meet your needs.

For more detailed information about this topic: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/software/release/16-12/configuration_guide/sys_mgmt/b_1612_sys_mgmt_9400_cg/environmental_monitoring_and_power_management.html

I also suggest using the Power Calculator tool to check what your power requirements will be: https://cpc.cloudapps.cisco.com/cpc/

Hope this helps.