Citrix Systems Network Router 9.2 User Manual

The NetScaler supports either classic or advanced policies within a feature. You 
cannot have both types in the same feature. Over the past few releases, some 
NetScaler features have migrated from using classic policies and expressions to 
advanced policies and expressions. If a feature of interest to you have changed to 
the advanced format, you may have to manually migrate the older information. 
Following are guidelines for deciding if you need to migrate your policies:

•

If you configured classic policies in a version of the Integrated Caching 
feature prior to release 9.0 and then upgrade to version 9.0 or later, there is 
no impact. All legacy policies are migrated to the advanced policy format.

•

For other features, you need to manually migrate classic policies and 
expressions to the advanced format if the feature has migrated its format. 

Before configuring expressions and policies, be sure you understand the relevant 
NetScaler feature and the structure of your data, as follows:

•

Read the documentation on the relevant feature.

•

Look at the data stream for the type of data that you want to configure.

You may want to run a trace on the type of traffic or content that you want 
to configure. This will give you an idea of the parameters and values, and 
operations on these parameters and values, that you need to specify in an 
expression.