SM Agent Cache Test

SiteMinder provides several caches that can be configured to maintain copies of recently accessed data (for example, user authorizations) to improve system performance. These caches should be configured to suit the nature of the data in your environment, but may also require periodic manual flushing. SiteMinder deployments can be configured to maintain the following cache on the Policy Server:

  • User Authorization Cache - Stores user distinguished names (DNs) based on the user portion of policies and includes the users’ group membership.

SiteMinder also maintains an Agent Cache on each SiteMinder Agent machine. The Agent Cache has two components:

  • Agent Resource Cache - Stores a record of accessed resources that are protected by various realms. This cache speeds up Agent to Policy Server communication, since the Agent knows about resources for which it has already processed requests.
  • Agent User Cache - Maintains users’ encrypted session tickets. It acts as a session cache by storing user, realm, and resource information. Entries in this cache are invalidated based on timeouts established by the realms a user accesses.

This test monitors the performance of the Agent Cache.

Target of the test : A SiteMinder Policy server

Agent deploying the test : An internal agent

Outputs of the test : One set of results for every Web agent that reports measurements to the OneView Monitor on the Policy server.

Configurable parameters for the test
Parameter Description

Test Period

How often should the test be executed.


The IP address of the Policy server for which this test is to be configured.


Refers to the port at which the Policy server listens to.


The port at which the monitored target exposes its SNMP MIB; The default value is 161.


By default, the eG agent supports SNMP version 1. Accordingly, the default selection in the SNMPversion list is v1. However, if a different SNMP framework is in use in your environment, say SNMP v2 or v3, then select the corresponding option from this list.


The SNMP community name that the test uses to communicate with the firewall. This parameter is specific to SNMP v1 and v2 only. Therefore, if the SNMPVersion chosen is v3, then this parameter will not appear.


This parameter appears only when v3 is selected as the SNMPVersion. SNMP version 3 (SNMPv3) is an extensible SNMP Framework which supplements the SNMPv2 Framework, by additionally supporting message security, access control, and remote SNMP configuration capabilities. To extract performance statistics from the MIB using the highly secure SNMP v3 protocol, the eG agent has to be configured with the required access privileges – in other words, the eG agent should connect to the MIB using the credentials of a user with access permissions to be MIB. Therefore, specify the name of such a user against this parameter. 


This parameter appears only when v3 is selected as the SNMPVersion. An SNMP context is a collection of management information accessible by an SNMP entity. An item of management information may exist in more than one context and an SNMP entity potentially has access to many contexts. A context is identified by the SNMPEngineID value of the entity hosting the management information (also called a contextEngineID) and a context name that identifies the specific context (also called a contextName). If the Username provided is associated with a context name, then the eG agent will be able to poll the MIB and collect metrics only if it is configured with the context name as well. In such cases therefore, specify the context name of the Username in the Context text box.  By default, this parameter is set to none.


Specify the password that corresponds to the above-mentioned Username. This parameter once again appears only if the SNMPversion selected is v3.

Confirm Password

Confirm the AuthPass by retyping it here.


This parameter too appears only if v3 is selected as the SNMPversion. From the Authtype list box, choose the authentication algorithm using which SNMP v3 converts the specified username and password into a 32-bit format to ensure security of SNMP transactions. You can choose between the following options:

  • MD5 – Message Digest Algorithm
  • SHA – Secure Hash Algorithm


This flag appears only when v3 is selected as the SNMPversion. By default, the eG agent does not encrypt SNMP requests. Accordingly, the this flag is set to No by default. To ensure that SNMP requests sent by the eG agent are encrypted, select the Yes option. 


If this EncryptFlag is set to Yes, then you will have to mention the encryption type by selecting an option from the EncryptType list. SNMP v3 supports the following encryption types:

  • DES – Data Encryption Standard
  • AES – Advanced Encryption Standard


Specify the encryption password here.

Confirm Password

Confirm the encryption password by retyping it here.


Specify the duration (in seconds) within which the SNMP query executed by this test should time out in this text box. The default is 10 seconds.

Data Over TCP

By default, in an IT environment, all data transmission occurs over UDP. Some environments however, may be specifically configured to offload a fraction of the data traffic – for instance, certain types of data traffic or traffic pertaining to specific components – to other protocols like TCP, so as to prevent UDP overloads. In such environments, you can instruct the eG agent to conduct the SNMP data traffic related to the monitored target over TCP (and not UDP). For this, set this flag to Yes. By default, this flag is set to No.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

Resource cache hits percent

Indicates the percentage of times the resource cache is accessed by this Web agent.


The value of this measure is indicative of how frequently SiteMinder uses cached resources. Higher the value of this measure, better will be the system performance. A very low value of this measure on the other hand, could cause slow-downs in the Web agent to Policy server communication.

Session cache hits percent

Indicates the percentage of times this Web agent accessed the user session cache.


A high value of this measure speeds up resource requests, whereas a low value slackens its pace.