Configure Route Filters and Source Classes in a Routing Policy

Begin configuring SCU by creating prefix route filters in a policy statement. These prefixes indicate the IPv4 or IPv6 source addresses to monitor. Within the policy statement, you must define and name the source classes attached to the filters.

[edit policy-options]

policy-statement policy-name {

    term term-name

        from {

            route-filter address/prefix;

        }

        then source-class class-name;

    }

}

An alternate configuration method, using the forwarding-class policy action, is even more flexible. It allows your IPv4 or IPv6 route filters to apply to an SCU profile, a DCU profile, or both simultaneously. Additionally, if you have only one term, you can implement the from and then statements at the [edit policy-options policy-statement policy-name] hierarchy level.

[edit policy-options]

policy-statement policy-name {

    from {

        route-filter 105.15.0.0/16 orlonger;

    }

    then forwarding-class class-name;

}

A third option is the existing DCU parameter of destination-class. For more information on DCU, see the JUNOS Internet Software Policy Framework Configuration Guide.