Citrix Systems 9.2 Benutzerhandbuch

Seite von 302
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