Juniper JUNOS SOFTWARE 10.2 - SOFTWARE INSTALLATION AND UPGRADE GUIDE 4-28-2010 Upgrade Manual page 74

JUNOS Release 10.2 Software Installation and Upgrade Guide
Set Up Routing Engine Configuration Groups
In a router with two Routing Engines, one configuration should be shared between
both Routing Engines. This ensures that both Routing Engine configurations are
identical. Within this configuration, create two Routing Engine groups, one for each
Routing Engine. Within these groups, you specify the Routing Engine–specific
parameters.
For more information about creating configuration groups, see JUNOS® Software CLI
User Guide.
For more information about the initial configuration for redundant Routing Engine
systems and the re0 group, see JUNOS® Software High Availability Configuration Guide.
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NOTE: The hostname specified in the router configuration is not used by the DNS
server to resolve to the correct IP address. This hostname is used to display the name
of the Routing Engine in the CLI. For example, the hostname appears at the
command-line prompt when the user is logged in to the CLI:
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Set Up Routing Engine Configuration Groups
root# set system login user user-name class super-user
Create the configuration group
that is only used by RE0
[edit]
root# set groups re0
Navigate to the
groups re0
[edit]
root# edit groups re0
Specify the router hostname.
[edit groups re0]
root# set system host-name host-name
user-name@host-name>
Configure the IP address and prefix length for the router Ethernet interface.
For all routers except the TX Matrix Plus router and T1600 routers in a routing
matrix:
[edit]
root@# set interfaces fxp0 unit 0 family inet address address/prefix-length
For TX Matrix Plus and T1600 routers in a routing matrix only:
[edit]
root@# set interfaces em0 unit 0 family inet address address/prefix-length
re0 . The re0 group is a special group designator
in a redundant routing platform.
level of the configuration hierarchy.