Citrix Systems CITRIX NETSCALER 9.3 Benutzerhandbuch

The computer that sent the request. Choose this if you want to examine some
aspect of the sender of the request.

When you make your choice, the rightmost list box lists appropriate terms for the
next part of your expression.

2. In the second list box, choose the second term for your expression.

The choices depend upon which choice you made in the previous step, and are
appropriate to the context. After you make your second choice, the Help window
below the Construct Expression window (which was blank) displays help
describing the purpose and use of the term you just chose.

3. Continue choosing terms from the list boxes that appear to the right of the

previous list box, or typing strings or numbers in the text boxes that appear to
prompt you to enter a value, until your expression is finished. For more
information about the PI expressions language and creating expressions for
AppFlow policies, see the Citrix NetScaler Policy Configuration and Reference
Guide. For a link to the guide, see the 

To put a policy into effect, you must bind it either globally, so that it applies to all
traffic that flows through the NetScaler, or to a specific virtual server, so that the
policy applies only to the traffic related to that virtual server.

When you bind a policy, you assign it a priority. The priority determines the order in
which the policies you define are evaluated. You can set the priority to any positive
integer.

In the NetScaler operating system, policy priorities work in reverse order—the higher
the number, the lower the priority. For example, if you have three policies with
priorities of 10, 100, and 1000, the policy assigned a priority of 10 is performed first,
then the policy assigned a priority of 100, and finally the policy assigned an order of 1000.

You can leave yourself plenty of room to add other policies in any order, and still set
them to evaluate in the order you want, by setting priorities with intervals of 50 or 100
between each policy when you globally bind it. You can then add additional policies at
any time without having to change the priority of an existing policy.

For additional information about binding policies on the NetScaler, see the Citrix
NetScaler Traffic Management Guide at 

.

At the NetScaler command prompt, type the following command to globally bind an
AppFlow policy and verify the configuration:

w

bind appflow global <policyName> <priority> [<gotoPriorityExpression [-type
<type>] [-invoke (<labelType> <labelName>)]

w

Citrix NetScaler Administration Guide

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