Policy Framework Configuration Guide - Juniper Networks

Chapter 4: Routing Policy Configuration
protocols bgp], [edit protocols bgp group group-name], or [edit protocols bgp group
group-name neighbor address] hierarchy level:
[edit]
bgp {
protocols {
idle-after-switch-over (seconds | never);
}
}
For seconds, specify a value from 1 through 4,294,967,295 (2 32 – 1). The BGP peering
session is not reestablished until after the specified period. If you specify the forever
option, the BGP peering session is not established until you issue the clear bgp neighbor
command. For more information about BGP and the configuration statement summary
of the idle-after-switch-over statement, see the Junos Routing Protocols Configuration
Guide. For more information about configuring active nonstop routing, see the Junos High
Availability Configuration Guide.
Example: Configuring a BGP Export Policy That References a Dynamic Routing Policy
In this example, you configure the following in the dynamic database: a routing policy,
policy-statement one, and two prefix lists: prefix-list pl1, which is referenced in
policy-statement one, and prefix-list pl2.
In the standard configuration database, you configure the following routing policies and
policy objects: a routing policy (policy-statement one) that references the routing policy
with the same name configured in the dynamic database; a prefix list (prefix-list pl2)
that references the prefix list with the same name configured in the dynamic database;
and a routing policy (policy-statement two) that references the prefix list prefix-list pl2
you configured in the standard configuration and references the prefix list with the same
name configured in the dynamic database.
You then create and apply a policy expression that includes policy-statement one and
policy-statement two to BGP export policy in the standard configuration.
In the dynamic database, configure policy-statement one, prefix-list pl1, and prefix-list pl2:
[edit dynamic]
policy-options {
prefix-list pl1 {
8.8.0.0/16;
12.12.12.3/32
}
prefix-list pl2;
10.10.0.0/16
}
policy-statement one {
term term1
from {
prefix-list pl1
}
then accept;
}
then reject;
Copyright © 2010, Juniper Networks, Inc.
69