Juniper Networks E-Series manual Status LEDs, Powering Down

Status LEDs E-Series Routers

7-3

Initialization Sequence

Each E-series line module is initialized independently. As a result, the CLI on the SRP module may become available before the line modules have completed initialization. Commands relating to a line module may fail if the module has not completed initialization. The show version command can be used to display line module status. Do not enter commands for a line module until its state is “online”.

Status LEDs

Upon initial powerup, the components of the E-series router run boot code, go through a series of self diagnostic tests, and synchronize with each other.

When the tests are complete, use the LEDs on each module to determine the status of the router. Observe the line module and SRP module LEDs in the front, and the I/O line module and SRP I/O module LEDs in the rear.

Refer to Chapter 10, Troubleshooting, for information on the system’s

LEDs.

Powering Down

If you need to power down or remove the SRP module, first enter the halt command to temporarily suspend the system’s operation. See E-Series System Basics Configuration Guide, Chapter 4, Managing the System for more information.

Caution: If you do not use the halt command before removing or powering down an SRP module, the system’s NVS card may become corrupted.

If you shut down the system improperly, it will run an investigation of the file allocation table (FAT) the next time it reboots.

The Next Step

If you have problems powering up the system, turn to Chapter 10,

Troubleshooting, for help.

If the system boots properly, turn to Chapter 8, Accessing E-Series

Routers.