Configuring Policies for IMS
For IMS environments, you can configure JUNOSe policies. When you configure classify-traffic conditions, you can set up the software so that the SAE expands into multiple classifiers before it installs the policy on the router. If you enter a comma-separated list of values in the source and destination network (IP address, mask, and IP operation) or port fields (for port-related protocols), the software creates a classifier for each possible combination of address and port. Note that the software does not expand classifiers for values that are entered as a range.
For example, the source configuration in the classify-traffic condition in Figure 22 would cause the condition to be expanded into four classifiers that have the following combination of source addresses and source ports:
192.1.1.0/255.255.255.0 eq 8192.1.1.0/255.255.255.0 eq 8080192.2.1.1/255.255.255.0 eq 8192.2.1.1/255.255.255.0 eq 80
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Enabling Expansion of JUNOSe Classify-Traffic Conditions
To use the SRC CLI to enable the expansion of JUNOSe classify-traffic conditions:
- From configuration mode, access the SAE configuration statement for policy management.
[edit]user@host#edit shared sae configuration policy-management-configuration
- Enable the SAE to expand the JUNOSe classify-traffic conditions into multiple classifiers before it installs the policy on the router.
[edit shared sae configuration policy-management-configuration]user@host#set enable-junose-classifier-expansion
NOTE: Because classifier expansion uses processing resources when the policy is created, you should set this property to true only if you are going to use the feature.