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Configuring content switching policy labels

December 18, 2018
Contributed by:  S

A policy label is a user-defined bind point to which policies are bound. When a policy label is invoked, all the policies bound to it are evaluated in the order of the priority that you assigned to them. A policy label can include one or more policies, each of which can be assigned its own result. A match on one policy in the policy label can result in proceeding to the next policy, invoking a different policy label or appropriate resource, or an immediate end to policy evaluation and return of control to the policy that invoked the policy label. You can create policy labels for default syntax policies only.

For information about policy labels, see the “Creating Policy Labels.”

A content switching policy label consists of a name, a label type, and a list of policies bound to the policy label. The policy label type specifies the protocol that was assigned to the policies bound to the label. It must match the service type of the content switching virtual server to which the policy that invokes the policy label is bound. For example, you can bind TCP Payload policies to a policy label of type TCP only. Binding TCP Payload policies to a policy label of type HTTP is not supported.

Each policy in a content switching policy label is associated with either a target (which is equivalent to the action that is associated with other types of policies, such as rewrite and responder policies) or a gotoPriorityExpression option and/or an invoke option. That is, for a given policy in a content switching policy label, you can specify a target, or you can set the gotoPriorityExpression option and/or the invoke option. Additionally, if multiple policies evaluate to true, only the target of the last policy that evaluates to true is considered.

You can use either the NetScaler appliance CLI or the configuration utility to configure content switching policy labels. In the NetScaler appliance CLI, you first create a policy label by using the add cs policylabel command. Then, you bind policies to the policy label, one policy at a time, by using the bind cs policylabel command. In the NetScaler appliance GUI, you perform both tasks in a single dialog box.

To create a content switching policy label by using the command line interface

At the command prompt, type:

add cs policylabel <labelName> <cspolicylabelTypetype>

Example


add cs policylabel testpollab http

To rename a content switching policy label by using the command line interface

At the command prompt, type:

rename cs policylabel <labelName> <newName>

Example


rename cs policylabel oldPolicyLabelName newPolicyLabelName

To rename a content switching policy label by using the configuration utility

Navigate to Traffic Management > Content Switching > Policy Labels , select a policy label and, in the Action list, select Rename.

To bind a policy to a content switching policy label by using the command line interface

At the command prompt, type the following commands to bind a policy to a policy label and verify the configuration:

  • bind cs policylabel <labelName> <policyName> <priority>[ [-targetVserver <string>] [-gotoPriorityExpression <expression>] [-invoke <labeltype> <labelName>] ]
  • show cs policylabel <labelName>

Example


bind cs policylabel testpollab test_Pol 100 -targetVserver LBVIP
show cs policylabel testpollab
        Label Name: testpollab
        Label Type: HTTP
        Number of bound policies: 1
        Number of times invoked: 0
        Policy Name: test_Pol
        Priority: 100
        Target Virtual Server: LBVIP

Note: If a policy is configure with an action, the target virtual server (targetVserver), go to priority expression (gotoPriorityExpression), and invoke (invoke) parameters are not required. If a policy is not configure with an action, you need to configure at least one of the following parameters: targetVserver, gotoPriorityExpression, and invoke.

To unbind a policy from a policy label by using the command line interface

At the command prompt, type the following commands to unbind a policy from a policy label and verify the configuration:

  • unbind cs policylabel <labelName> <policyName>
  • show cs policylabel <labelName>

Example


unbind cs policylabel testpollab test_Pol
show cs policylabel testpollab
        Label Name: testpollab
        Label Type: HTTP
        Number of bound policies: 0
        Number of times invoked: 0

To remove a policy label by using the command line interface

At the command prompt, type:

rm cs policylabel <labelName>

To manage a content switching policy label by using the configuration utility

Navigate to Traffic Management > Content Switching > Policy Labels, configure a policy label, bind policies to the label, and optionally specify a priority, gotoPriority expression, and an invoke option.

Configuring content switching policy labels

December 18, 2018
Contributed by:  S

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