Juniper M10i Hardware Manual page 117

user@host> show chassis routing-engine
Routing Engine status:
Slot 0:
Current state
...
If you are removing the master Routing Engine and a second Routing Engine is
3.
installed, issue the following CLI command to switch mastership to the standby
host module:
user@host> request chassis routing-engine master switch
If the Routing Engines are configured for graceful switchover and are running a
JUNOS release that supports graceful switchover, the standby Routing Engine
immediately assumes Routing Engine functions and there is no interruption to
packet forwarding. Otherwise, packet forwarding halts while the standby Routing
Engine becomes the master and the Packet Forwarding Engine components
reset and connect to the new master Routing Engine. For information about
configuring graceful switchover, see the section about Routing Engine redundancy
in the JUNOS System Basics Configuration Guide.
We recommend you run JUNOS Release 7.0 or later on the M10i router to support
graceful switchover.
NOTE: Router performance might change if the standby Routing Engine's
configuration differs from the former master's configuration. For the most predictable
performance, configure the two Routing Engines identically, except for parameters
unique to a Routing Engine, such as the hostname defined at the
hierarchy level and the management interface (
hierarchy level.
[edit interfaces]
To configure Routing Engine-specific parameters and still use the same configuration
on both Routing Engines, include the appropriate configuration statements under
the re0 and re1 statements at the
statement. For instructions, see the JUNOS System Basics Configuration Guide.
On the console or other management device connected to the Routing Engine,
4.
enter CLI operational mode and issue the following command to shut down the
router software cleanly and preserve Routing Engine state information.
user@host> request system halt
Chapter 13: Replacing Hardware Components
Master
fxp0 or equivalent) defined at the
[edit groups] hierarchy level and use the
[edit system]
apply-groups
93
Replacing an HCM