Why is the red Alarm LED on my Juniper EX4200-24T Switch indicating a major alarm?
A red Alarm LED indicates a major alarm. You should investigate the physical conditions that may have triggered a chassis alarm. For example, check for a power supply failure or excessive component temperature.
General| Model | EX4200-24T |
|---|---|
| Ports | 24 |
| Uplink Ports | 4 |
| Switching Capacity | 128 Gbps |
| Jumbo Frame Support | Yes |
| Jumbo Frame Size | 9216 bytes |
| Redundant Power Supply | Optional |
| Product Type | Switch |
| MAC Address Table Size | 32000 entries |
| Power Supply | 1 (installed) / 2 (max) |
| Operating Temperature | 32°F to 113°F (0°C to 45°C) |
| Operating Humidity | 10 to 85% RH |
Identifies components like power supply, fan tray, uplink module, and transceivers that can be replaced on-site.
Details environmental conditions like temperature, humidity, and altitude for EX Series switches.
Details switch numbers and roles based on Junos OS release for EX4200, EX4500, and EX4550 Virtual Chassis.
Explains the importance and procedure for connecting the EX Series switch to earth ground for safety.
Details steps for connecting AC power to the EX4200 switch, including power supply and cord connections.
Provides instructions for connecting DC power to the EX4200 switch, including power supply module and cable connections.
Guides users on connecting and configuring an EX Series switch using the Command Line Interface (CLI).
Details connecting and configuring an EX Series switch using the Juniper Networks Web interface (J-Web).
Details steps for installing a hot-removable and hot-insertable fan tray into the EX4200 switch.
Explains the procedure for safely removing the fan tray from the EX4200 switch chassis.
Details steps for installing a hot-removable and hot-insertable power supply into the EX4200 switch.
Explains the procedure for safely removing the power supply from the EX4200 switch.
Details steps for installing an optional hot-removable and hot-insertable uplink module into the switch's front panel.
Explains the procedure for safely removing an uplink module from the EX4200 switch's front panel.
Details steps for safely installing hot-removable and hot-insertable transceivers into device ports.
Explains the procedure for safely removing transceivers from device ports.
Explains how to add a new EX4200 switch to an existing EX4200 Virtual Chassis using CLI commands.
Outlines the procedure for returning an EX4200 switch or component for repair or replacement.
Details obtaining a Return Material Authorization (RMA) number from Juniper Networks Technical Assistance Center (JTAC).
Lists chassis component alarm conditions, severity, and remedies for EX4200 switches.
Addresses interface issues, specifically when an SFP or SFP+ transceiver is installed and the interface is down.
Helps troubleshoot non-working Virtual Chassis port (VCP) connections, often due to uplink module replacement.
Provides troubleshooting for power supply installation alarms, such as the 'Unsupported PSU' alarm.
Lists safety practices: proper procedures, clear areas, hazard avoidance, and proper equipment handling.
Emphasizes that only trained and qualified personnel should install or replace the device.
Outlines procedures for protecting people and equipment during fire emergencies and recommends fire-control measures.
Advises reading installation instructions before connecting the device to a power source.
Provides guidelines for safely lifting routing devices and components, including weight limits and techniques.
Informs users that the unit is for restricted access areas, accessible only by authorized personnel.
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