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 Policy Framework Configuration Guide.