Juniper Networks ERX Hardware 8 - Manual (Page 93)

Powering Up ERX Routers
Status LEDs
Upon initial power-up, the components of the 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.
See “Troubleshooting” on page 103 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 JUNOSe System
Basics Configuration Guide, Chapter 5, 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 might become corrupted.
If you shut down the system improperly, it runs an investigation of the
file allocation table (FAT) the next time it reboots.
The Next Step
If you have problems powering up the system, see “Troubleshooting”
on page 103 for help.
If the system boots properly, see “Accessing ERX Routers” on page 77.
The Next Step 75