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Chapter 2 Configuring Advanced Policies 21
• NEXT. This keyword selects the policy with the next higher priority level
in the current policy bank.
• An integer. If you supply an integer, it must match the priority level of
another policy in the current policy bank.
• END. This keyword stops evaluation after processing the current policy,
and no additional policies in this bank are processed.
• Blank. If the Goto expression is empty, it is the same as specifying END.
• A numeric expression. This is an advanced expression that resolves to a
priority number for another policy in the current bank.
• USE_INVOCATION_RESULT. This phrase can be used only if you are
invoking an external policy bank. Entering this phrase causes the NetScaler
to perform one of the following actions:
• If the final Goto in the invoked policy bank has a value of END or is
empty, the invocation result is END, and evaluation stops.
• If the final Goto expression in the invoked policy bank is anything
other than END, the NetScaler performs a NEXT.
The following table illustrates a policy bank that uses Goto statements and policy
bank invocations.
How Policy Evaluation Ends
Evaluation of a policy bank ends when the following takes place:
Example of a Policy Bank That Uses Gotos and External Bank Invocations
Policy Name Priority Goto Invocation Policy Bank
to be Invoked
ClientCertificatePolicy
(rule: does the request
contain a client certificate?)
100 300 None None
SubnetPolicy (rule: is the
client from a private
subnet?)
200 NEXT None None
NOPOLICY 300 USE
INVOCATION
RESULT
Request
vserver
My_Request
_VServer
NOPOLICY 350 USE
INVOCATION
RESULT
Policy Label My_Policy_
Label
WorkingHoursPolicy (rule:
is it working hours?)
400 END None None