Juniper JUNOS OS 10.3 - SOFTWARE Manual page 478

Complete Software Guide for Junos
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OS for EX Series Ethernet Switches, Release 10.3
management then allocates 4000 W to redundant power. If a power supply goes offline
again, power management once again allocates 2000 W to redundant power.
When power is insufficient to meet the budgeted power requirements, power management
raises alarms as follows:
If all the line cards are receiving power but insufficient redundant power exists to
maintain the configured N+1 or N+N power configuration, power management raises
a minor (yellow) alarm. If this condition persists for 5 minutes, the alarm becomes a
major (red) alarm.
If one or more line cards are down because of insufficient power (including redundant
power), power management raises a major (red) alarm.
Power management clears all alarms when sufficient power is available to meet normal
operating and redundant power requirements.
Understanding Alarm Types and Severity Levels on EX Series Switches on page 637
Configuring the Power Priority of Line Cards (CLI Procedure) on page 384
Configuring Power Supply Redundancy (CLI Procedure) on page 383
Verifying Power Configuration and Use on page 385
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