Taking the SRX5800 Services Gateway Host Subsystem Offline

The host subsystem is composed of an SCB with a Routing Engine installed in it. You take the host subsystem offline and bring it online as a unit. Before you replace an SCB or a Routing Engine, you must take the host subsystem offline. Taking the host subsystem offline causes the device to shut down.

To take the host subsystem offline:

1. On the console or other management device connected to the Routing Engine that is paired with the SCB you are removing, enter CLI operational mode and issue the following command. The command shuts down the Routing Engine cleanly, so its state information is preserved:
   user@host> request system halt

   Wait until a message appears on the console confirming that the operating system has halted.

   For more information about the command, see the Junos OS System Basics and Services Command Reference.

   Note: The SCB might continue forwarding traffic for approximately 5 minutes after the request system halt command has been issued.

2. Wait until a message appears on the console confirming that the operating system has halted.

   For more information about the command, see the Junos OS System Basics and Services Command Reference.

   Note: The SCB might continue forwarding traffic for approximately 5 minutes after the request system halt command has been issued.