Juniper EX4300 Series

Troubleshoong the EX4300 Components
IN THIS SECTION
Understand Alarm Types and Severity Levels on EX Series Switches | 320
Chassis Component Alarm Condions on EX4300 Switches | 322
Check Acve Alarms with the J-Web Interface | 325
Monitor System Log Messages | 326
Troubleshoong PoE Voltage Injecon Failure in EX2300, EX3400, or EX4300 Switch Models with PoE
Capability | 333
Troubleshoot Temperature Alarms in EX Series Switches | 334
Understand Alarm Types and Severity Levels on EX Series Switches
NOTE: This topic applies only to the J-Web Applicaon package.
Alarms alert you to condions that might prevent normal operaon of the switch. Before monitoring
alarms on a Juniper Networks EX Series Ethernet switch, become familiar with the terms dened in
Table 89 on page 320.
Table 89: Alarm Terms
Term Denion
alarm Signal alerng you to condions that might prevent normal operaon. On a switch, the
alarm signal is the ALM LED lit on the front of the chassis.
alarm condion Failure event that triggers an alarm.
alarm severity Seriousness of the alarm. If the Alarm (ALM) LED is red, this indicates a major alarm. If
the Alarm LED is yellow or amber, this indicates a minor alarm. If the Alarm LED is unlit,
there is no alarm or the switch is halted.
320