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CA Performance Management - 2.8
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Configure Round Trip Time (RTT) Tests

Last update June 5, 2018

To enable round-trip time tests, configure the tests using the Data Aggregator REST API. CA Performance Management supports the following test types:

  • DNS
    Measures the DNS lookup time.
  • ICMP Echo (Ping)
    Measures the round-trip delay for the full path.
  • ICMP Path Echo
    Measures the round-trip delay and hop-by-hop round-trip delay.
  • ICMP Jitter
    Measures the hop-by-hop jitter, packet loss, and delay measurement statistics in an IP network.
  • HTTP
    Measures the round-trip time to retrieve a web page.
  • TCP Connect
    Measures the time to connect to a target device with TCP.
  • UDP Jitter
    Measures the round-trip delay, one-way delay, one-way jitter, and one-way packet loss. Codec simulation is provided for MOS and ICPIF voice quality scoring capability.

RTT Test Architecture

The following diagram shows how the various components participate in the RTT test feature:

RTT Test Architecture

Configure the Tests

To configure RTT tests, complete the following steps:

Gather Required Information

The following information is required to configure a test:

  • Required for all RTT tests in your environment:
    • DA host/address
    • IpDomainId

    Note: To determine the IpDomainId, use the Data Aggregator REST API.

  • Required for the specific test:
    • TestHost
      The IP address of the device where CA Performance Management creates the test.
    • Depending on the test type, one of the following targets is required:
      • TargetAddress
        The device that receives the test probes.
      • (DNS) TargetAddressString
        IP address or hostname of the target that receives the probes. Use this string instead of TargetAddress.
      • (HTTP) Url
        The URL that the HTTP probe communicates with.

Create an SNMP "SET" Profile

Create an SNMP profile and specify Yes for Use in SNMP SET.

For more information, see SNMP Profiles.

Discover Devices Capable of Running RTT Tests

Apply a monitoring profile with the IPSLA-related metric families that you want to monitor to the target devices. Then, run discovery for those devices.

For more information, see DiscoveryConfigure Monitoring Profiles, and IPSLA Polling.

Associate SET Profiles with the Devices

For each device, associate the SET profile to the device item.

Through the UI:

  1. Go to Administration, and click the Data Source.
  2. Select the monitored device.
  3. Select the SNMP SET Profile and the SNMP SET Version.
  4. Click Save.
    You can now use CA Performance Management to configure RTT tests on the device.

Through the Data Aggregator API:

Documentation: http://DA_HOST:8581/rest/devices/manageable/documentation
PUT URL: http://DA_HOST:8581/rest/devices/manageable/<device item id>
Headers: [Content-Type=application/xml]
Body Syntax:

<ManageableDevice version="1.0.0">
  <RWSNMPProfileID>DA_RWSNMP_PROFILE_ID</RWSNMPProfileID>
  <RWSNMPProfileVersion>SNMP_VERSION</RWSNMPProfileVersion>
</ManageableDevice>

Tip: To find the Item ID of an SNMP profile, go to the following REST URL: http://DA_HOST:8581/rest/profiles/snmpv1

Example:
This example associates the SNMP Profile identified by Item ID 736 with device 1144:

PUT URL

http://DA_host:8581/rest/devices/manageable/1144

Body

<ManageableDevice version="1.0.0">

  <RWSNMPProfileID>736</RWSNMPProfileID>

  <RWSNMPProfileVersion>SNMPV1</RWSNMPProfileVersion>

</ManageableDevice>

Configure the Tests

Use a REST client to create RTT profiles. CA Performance Management uses the RTT profiles to configure the tests on the target devices. Each profile initiates the specified action type to create, update, or delete a test on the device. The profile is not used again after CA Performance Management performs the specified action. Old RTT profiles are deleted.

For information about how to configure the RTT profiles, see RTT Configuration Details. For configuration examples, see RTT Configuration Examples.

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