Troubleshooting Ex4200 Components; Understand Alarm Types And Severity Levels On Ex Series Switches - Juniper EX4200 Hardware Manual

Troubleshooting EX4200 Components

IN THIS SECTION

Understand Alarm Types and Severity Levels on EX Series Switches | 234

Chassis Component Alarm Conditions on EX4200 Switches | 236
Check Active Alarms with the J-Web Interface | 240
Monitor System Log Messages | 241
Troubleshooting Network Interfaces on EX4200 Switches | 246
Troubleshooting Virtual Chassis Port Connectivity on an EX4200 Switch | 247
Troubleshooting Power Supply Installation Alarms on EX4200 Switches | 248
Troubleshooting PoE Voltage Injection Failure in EX2300, EX3400, or EX4300 Switch Models with PoE
Capability | 249
Troubleshoot Temperature Alarms in EX Series Switches | 249
Understand Alarm Types and Severity Levels on EX Series Switches
NOTE: This topic applies only to the J-Web Application package.
Alarms alert you to conditions that might prevent normal operation of the switch. Before monitoring alarms
on a Juniper Networks EX Series Ethernet switch, become familiar with the terms defined in
Table 59 on page 234.
Table 59: Alarm Terms
Term
alarm
alarm condition
alarm severity
Definition
Signal alerting you to conditions that might prevent normal operation. On a switch, the
alarm signal is the ALM LED lit on the front of the chassis.
Failure event that triggers an alarm.
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.
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