Juniper T640 Hardware Manual page 343

Copyright © 2017, Juniper Networks, Inc.
To take a host subsystem offline:
Determine whether the host subsystem is functioning as the master or as the backup,
1.
using one of the two following methods:
Check the Routing Engine LEDs on the craft interface. If the green
lit, the corresponding host subsystem is functioning as the master.
Issue the following CLI command. The master Routing Engine is designated
in the field:
Current state
user@host> show chassis routing-engine
Routing Engine status:
Slot 0:
Current state
Election priority
Temperature
DRAM
CPU utilization:
User
Background
Kernel
Interrupt
Idle
Start time
Uptime
Load averages:
Routing Engine status:
Slot 1:
Current state
If the host subsystem is functioning as the master, switch it to backup using the CLI
2.
command:
user@host> request chassis routing-engine master switch
To halt the router:
3.
user@host> request system halt
Wait until a message appears on the console confirming that the operating system
has halted.
The command shuts down the Routing Engine cleanly, so its state information is
preserved. For more information about the command, see request system halt.
NOTE: The SIBs might continue forwarding traffic for approximately 5
minutes after the
On the console or other management device connected to the other Routing Engine,
4.
enter CLI operational mode and issue the following command.
user@host> request chassis cb offline slot n
Chapter 27: Replacing Host Subsystem Components
Master
Master (default)
34 degrees C / 93 degrees F
2048 Mbytes
0 percent
0 percent
1 percent
0 percent
99 percent
2002-01-22 05:21:31 UTC
10 days, 16 hours, 4 minutes, 52 seconds
1 minute 5 minute
0.00 0.00
Empty
command has been issued.
request system halt
MASTER LED is
Master
15 minute
0.00
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