- play_arrow Configuration
- play_arrow Starting J-Web
- play_arrow J-Web Configuration Tools
- play_arrow System Basics Configuration
- Connecting and Configuring an EX Series Switch (J-Web Procedure)
- Configuring Date and Time for the EX Series Switch (J-Web Procedure)
- Configuring System Identity for an EX Series Switch (J-Web Procedure)
- Configuring Management Access for the EX Series Switch (J-Web Procedure)
- Generating SSL Certificates to Be Used for Secure Web Access (EX Series Switch)
- Rebooting or Halting the EX Series Switch (J-Web Procedure)
- play_arrow Class of Service Configuration
- Defining CoS Drop Profiles (J-Web Procedure)
- Defining CoS Classifiers (J-Web Procedure)
- Defining CoS Code-Point Aliases (J-Web Procedure)
- Assigning CoS Components to Interfaces (J-Web Procedure)
- Defining CoS Forwarding Classes (J-Web Procedure)
- Defining CoS Rewrite Rules (J-Web Procedure)
- Defining CoS Schedulers (J-Web Procedure)
- Defining CoS Scheduler Maps (J-Web Procedure)
- play_arrow Security and Management Configuration
- play_arrow Routing Policies and Packet Filtering Configuration
- play_arrow Ethernet Switching Configuration
- play_arrow Interfaces
- play_arrow Configuring Services
- play_arrow Configuring Layer 3 Protocols
- play_arrow Configuring Real-Time Performance Monitoring
- play_arrow Software Installation and Upgrades
- play_arrow Configuration, Files, Users, Licenses, and Product Registration
- Managing Configuration Files Through the Configuration History (J-Web Procedure)
- Setting or Deleting the Rescue Configuration (J-Web Procedure)
- Uploading a Configuration File (J-Web Procedure)
- Managing Log, Temporary, and Crash Files on the Switch (J-Web Procedure)
- Managing Users (J-Web Procedure)
- Managing Licenses for the EX Series Switch (J-Web Procedure)
- Registering the EX Series Switch with the J-Web Interface
- Generating Support Information Reports for EX Series Switches Using the J-Web Interface
- play_arrow Virtual Chassis Configuration
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- play_arrow Monitoring
- play_arrow Monitoring Tasks
- Check Active Alarms with the J-Web Interface
- Monitor System Log Messages
- Monitoring Chassis Information
- Monitoring System Properties
- Monitoring System Process Information
- Monitoring Switch Control Traffic
- Monitoring Interface Status and Traffic
- Monitoring PoE
- Monitoring Hosts Using the J-Web Ping Host Tool
- Monitoring Network Traffic Using Traceroute
- Monitoring DHCP Services
- Monitoring OSPF Routing Information
- Monitoring RIP Routing Information
- Monitoring BGP Routing Information
- Monitoring Routing Information
- Monitoring Ethernet Switching on EX Series Switches (J-Web)
- Monitoring IGMP Snooping
- Monitoring Spanning Tree Protocols on Switches
- Monitoring CoS Classifiers
- Monitoring CoS Drop Profiles
- Monitoring CoS Value Aliases
- Monitoring CoS Forwarding Classes
- Monitoring Interfaces That Have CoS Components
- Monitoring CoS Rewrite Rules
- Monitoring CoS Scheduler Maps
- Monitoring the Virtual Chassis Status and Statistics on EX Series Virtual Chassis
- Monitoring 802.1X Authentication
- Monitoring Port Security
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- play_arrow Administration
- play_arrow Software, Files, Licenses, Logs
- Uploading a Configuration File (J-Web Procedure)
- Managing Configuration Files Through the Configuration History (J-Web Procedure)
- Setting or Deleting the Rescue Configuration (J-Web Procedure)
- Updating J-Web Interface on EX Series Switches (J-Web Procedure)
- Upgrading Junos OS on EX Series Switches (J-Web Procedure)
- Managing Licenses for the EX Series Switch (J-Web Procedure)
- Rebooting or Halting the EX Series Switch (J-Web Procedure)
- Managing Log, Temporary, and Crash Files on the Switch (J-Web Procedure)
- Registering the EX Series Switch with the J-Web Interface
- Generating Support Information Reports for EX Series Switches Using the J-Web Interface
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- play_arrow Troubleshooting
- play_arrow Troubleshooting Task
- play_arrow FAQ
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Understand Alarm Types and Severity Levels on EX Series Switches
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 1.
Term | Definition |
|---|---|
alarm | 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. |
alarm condition | 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. |
chassis alarm | Preset alarm triggered by a physical condition on the switch such as a power supply failure, excessive component temperature, or media failure. |
system alarm | Preset alarm triggered by a missing rescue configuration or failure to install a license for a licensed software feature. Note: On EX6200 switches, a system alarm can be triggered by an internal link error. |
Alarm Types
The switch supports these alarms:
Chassis alarms indicate a failure on the switch or one of its components. Chassis alarms are preset and cannot be modified.
System alarms indicate a missing rescue configuration. System alarms are preset and cannot be modified, although you can configure them to appear automatically in the J-Web interface display or the CLI display.
Alarm Severity Levels
Alarms on switches have two severity levels:
Major (red)—Indicates a critical situation on the switch that has resulted from one of the following conditions. A red alarm condition requires immediate action.
One or more hardware components have failed.
One or more hardware components have exceeded temperature thresholds.
An alarm condition configured on an interface has triggered a critical warning.
Minor (yellow or amber)—Indicates a noncritical condition on the switch that, if left unchecked, might cause an interruption in service or degradation in performance. A yellow or amber alarm condition requires monitoring or maintenance.
A missing rescue configuration generates a yellow or amber system alarm.
