Enabling Auto Line Card Shutdown - Cisco Catalyst 9400 System Management Configuration Manual

Environmental Monitoring and Power Management
1. Go to
2. Select applicable values for the
Input Voltage
3. In the results that are displayed, locate the
for the supervisor module. This is the amount of spare power that must be available in the system to safely
install the second supervisor.
4. Enter the show power command in privileged EXEC mode.
This command displays power supply configuration information.
In the output, check the difference between the
be greater that what the CPC says in the
case, proceed with the task, if not, first install the required number of additional power supply modules.
Procedure
Step 1
Step 2
Step 3
Step 4

Enabling Auto Line Card Shutdown

Auto line card shutdown or autoLC, enables the hardware to automatically shut down line cards in the event
of a power constraint, until the total available power becomes greater than or equal to the total used power
displayed in the power summary of the show power priveleged EXEC command. You can also configure
line card power priority, that is, you can specify the order in which the system must shut down line cards in
case of a power constraint.
This feature provides deterministic behavior of the switch in case of power supply failure events and prioritized
line card shutdown events.
Starting from Cisco IOS XE Gibraltar 16.12.1 , autoLC shutdown is always enabled and cannot be disabled.
In all earlier releases, autoLC shutdown is disabled by default and must be manually enabled if you want the
system hardware to shut down line cards in the event of a power constraint.
https://cpc.cloudapps.cisco.com/cpc
Product Family
, and fields. Click Next to display results.
Line Card
Command or Action
configure terminal
Example:
Device# configure terminal
no power budget mode {single-sup}
Example:
Device(config)# no power budget mode
single-sup
end
Example:
Device(config)# end
Insert the second supervisor module in the
supervisor slot.
System Management Configuration Guide, Cisco IOS XE Bengaluru 17.4.x (Catalyst 9400 Switches)
→ Launch Cisco Power Calculator.
, ,
Chassis Supervisor Engine
Configuration Details
Total Maximum Available
column for the supervisor module. If this is the
Output Power
Purpose
Enters the global configuration mode.
Reverts to the default setting where the system
reserves power for both the supervisor modules
in the chassis.
Exits configuration mode.
For detailed steps, see the
Installation Note
Procedures, on cisco.com.
Enabling Auto Line Card Shutdown
(both supervisor slots),
section and note the
Output Power
and , this must
Total Used
Supervisor Module
→ Removal and Replacement
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