Policy Framework Configuration Guide - Juniper Networks

Junos 10.4 Policy Framework Configuration Guide
Configuring Routing Policies and Policy Objects in the Dynamic Database
Junos OS Release 9.5 and later support a configuration database, the dynamic database,
which can be edited in a similar way to the standard configuration database but which
is not subject to the same verification process to commit configuration changes. As a
result, the time it takes to commit a configuration change is much faster. The policies
and policy objects defined in the dynamic database can then be referenced in routing
policies configured in the standard configuration. The dynamic database is stored in the
/var/run/db/juniper.dyn directory.
To configure the dynamic database, enter the configure dynamic command to enter the
configuration mode for the dynamic database:
user@host> configure dynamic
Entering configuration mode
[edit dynamic]
user@host#
In this dynamic configuration database, you can configure the following statements at
the [edit policy-options] hierarchy level:
• as-path name
• as-path-group group-name
• community community-name
• condition condition-name
• prefix-list prefix-list-name
• policy-statement policy-statement-name
NOTE: No other configuration is supported at the [edit dynamic] hierarchy
level.
Use the policy-statement policy-statement-name statement to configure routing policies
as you would in the standard configuration database.
To exit configuration mode for the dynamic database, issue the exit configuration-mode
command from any level within the [edit dynamic] hierarchy, or use the exit command
from the top level.
Configuring Routing Policies Based on Dynamic Database Configuration
In the standard configuration mode, you can configure routing policies that reference
policies and policy objects configured at the [edit dynamic] hierarchy level in the dynamic
database. To define a routing policy that references the dynamic database configuration,
include the dynamic-db statement at the [edit policy-options policy-statement
policy-statement-name] hierarchy level:
[edit policy-options]
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