Juniper PTX5000 Hardware Manual page 318

NOTE: After powering on a power supply, wait at least 60 seconds before powering it off.
1. On an external management device connected to the PTX5000, issue the request system halt both-
routing-engines operational mode command. The command shuts down the Routing Engines cleanly,
so their state information is preserved. See
Upgrade Guide for more information about the command.
If the PTX5000 contains only one Routing Engine, issue the request system halt command.
user@host> request system halt both-routing-engines
Halt the system ? [yes,no] (no) yes
Wait until a message appears on the console confirming that the operating system has halted.
*** FINAL System shutdown message from user@host ***
System going down IMMEDIATELY
Terminated
...
syncing disks... 11 8 done
The operating system has halted.
Please press any key to reboot.
2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to
one of the ESD points on the chassis.
3. Move the power switch on the PDU to the off (O) position.
4. Perform these additional steps for your specific PDU:
• 120-A DC PDU—Switch the circuit breakers on the PDU to the off (O) position.
• 60-A DC PDU—Switch the power input switches on the PDU to the off (O) position.
• Three-phase delta AC PDU or three-phase wye AC PDU—Switch the circuit breaker on the PDU
to the off (O) position.
5. Repeat steps 3 and 4 for the other PDU.
request system halt
in the Software Installation and
300