Juniper EX9214 Hardware Manual page 219

Related
Documentation
Copyright © 2015, Juniper Networks, Inc.
To take a host subsystem offline:
Determine whether the host subsystem is the master or backup using one of these
1.
methods:
Look at the MASTER
steady green, the corresponding host subsystem is functioning as the master.
Issue the
show chassis routing-engine
will show whether the host subsystem is functioning as the master or backup.
If the host subsystem is functioning as the master, switch it to backup using the
2.
chassis routing-engine master switch
On the console or other management device connected to the master Routing Engine,
3.
enter CLI operational mode and issue the
shuts down the Routing Engine gracefully, so its state information is preserved.
Wait until a message appears on the console confirming that the operating system
has halted.
NOTE: The Switch Fabric module (SF module) might continue forwarding
traffic for approximately 5 minutes after the request system halt command
has been issued.
Maintaining Host Subsystem in EX9200 Switches on page 237
Host Subsystem in an EX9200 Switch on page 32
Chapter 18: Replacing Routing Engine (RE) Module
LED on the RE module faceplate. If the
CLI command. The output of this command
command.
request system halt
MASTER LED is lit
request
command. The command
195