Juniper Internet Router M160 Hardware Manual page 190

M160 Internet Router Hardware Guide
5.
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
[edit system]
defined at the
To configure Routing Engine-specific parameters and still use the same configuration
on both Routing Engines, include the appropriate configuration statements under
the
statement. For instructions, see the JUNOS System Basics Configuration Guide.
6.
166
Replacing Host Module Components
Issue the following CLI command. The master Routing Engine is
designated in the
Master
user@host> show chassis routing-engine
Routing Engine status:
Slot 0:
Current state
...
If the component you are removing belongs to the master host module and a
second host module is 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 running JUNOS Release 6.0 or later and are
configured for 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.
hierarchy level and the management interface (
[edit interfaces]
and statements at the
re0 re1
On the console or other management device connected to the Routing
Engine 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
field:
Current state
Master
hierarchy level.
hierarchy level and use the
[edit groups]
or equivalent)
fxp0
apply-groups