AppQoE policies

要实现AppQoE,您必须配置至少one policy to tell your Citrix ADC how to distinguish the connections to be queued in a specific queue.

To configure an AppQoE policy by using the command line

At the command prompt, type the following command:

add appqoe policy -rule -action

Example:

The following example selects requests with a User-Agent header that contains “Android”, and assigns them to the medium priority queue. These requests come from smartphones and tablets that run the Google Android operating system.

> add appqoe action appqoe-act-primd -priority MEDIUM Done > add appqoe policy appqoe-pol-primd -rule "HTTP.REQ.HEADER("User-Agent").CONTAINS("Android")" -action appqoe-act-primd Done > sh appqoe policy appqoe-pol-primd Name: appqoe-pol-primd Rule: HTTP.REQ.HEADER("User-Agent").CONTAINS("Android") Action: appqoe-act-primd Hits: 0 Done 

Parameters for configuring an AppQoE policy

• name. A name for the AppQoE policy. The name can begin with a letter, number, or the underscore symbol, and can consist of from one to 127 letters, numbers, and the hyphen (-), period (.) pound (#), space ( ), at sign (@), equals (=), colon (:), and underscore (_) symbols. You should chose a name that helps identify the type of action.
• rule. A Citrix ADC expression that tells the appliance which connections it should handle.
• action. The AppQoE action to perform when a connection matches the policy.

To configure an AppQoE policy by using the configuration utility

1. Navigate toApp-Expert>AppQoE>Policies.

2. In the details pane, do one of the following:

   • To create a new policy, clickAdd.
   • To modify an existing policy, select the policy, and then clickEdit.

3. If you are creating a new policy, in theCreate AppQoE Policydialog, in the Name text box, type a name for your new policy.

   The name can begin with a letter, number, or the underscore symbol, and can consist of from one to 127 letters, numbers, and the hyphen (-), period (.) pound (#), space ( ), at sign (@), equals (=), colon (:), and underscore (_) symbols. You should chose a name that helps identify the purpose and effect of this policy.

   If you are modifying an existing policy, skip this step. You cannot change the name of an existing policy.

4. In theActiondrop-down list, choose the AppQoE action to perform when the policy matches a connection. Click the plus (+) to open theAdd AppQoE Actiondialog and add a new action.

5. In theRuletext box, either enter the policy expression directly, or click New to create a policy expression. If you click New, perform the following steps:

   1. In theCreate Expressiondialog box, clickAdd.

   2. In the Add Expression dialog box, select a common expression from the Frequently Used Expressions drop-down list, or use the Construct Expression drop-down lists to create the expression that defines which traffic to filter.

      If you choose to create your own expression, you start by selecting the first term from the first drop-down list on the left side of the Construct Expression area. The choices in that list are:

      • HTTP: All traffic to port 80 and port 443.
      • SYS:
      • CLIENT:
      • SERVER:
      • ANALYTICS:
      • TEXT:

      The default choice is HTTP. After you make a choice in the first drop-down list (or accept the default), you can choose the next term in your expression from the drop-down list to the right of it. The terms in that list and other lists that follow change depending on your previous choices; the lists offer only terms that are valid choices. Continue to select terms until you have finished the expression.

   3. When you have created the expression that you want, clickOK. The expression is added in the Expression text box.

6. ClickCreate. The expression appears in theRuletext box.