CoA Measurements

The values on the CoA-Disconnect tab report Change of Authorization processing measurements and Disconnect request processing for the AAA Server Node test case.

Measurement Values

In the default view, the Reports tab displays the Summary view, which summarizes the measurements for the test session. If your test includes multiple test cases, you can view the report for a single test case by changing the report view...

Unless otherwise noted, cumulative values report the number of occurrences or rates calculated since the start of the test, and per-interval values report the number of occurrences or rates calculated during the interval. You can view either by changing the measurement values...

Learn more about test reports

Elapsed Time is the first measurement on every tab. It reports the amount of time between the start of the test and the end of the report interval.

Test Iteration reports the current iteration in a repeating test session. It is only displayed when a Number of Iterations is defined for the test session.

Message Counters

The following measurements record the number and types of messages exchanged between the AAA node and the CoA SUT.

CoA Request Sent (Authentication)
CoA Ack Received (Authentication)
CoA Nak Received (Authentication)
CoA Request Sent (Accounting start)
CoA Request Sent (Accounting stop)
CoA Ack Received (Accounting)
CoA Nak Received (Accounting)

The following measurements record the types of messages exchanged between AAA Node and NAS SUT.

Disconnect Request Sent
Disconnect Request
Disconnect Ack Received
Disconnect Nak Received

Black Hole Time

The following measurements track the elapsed time from the transmittal of a CoA Request triggered by an Access Request to the transmittal of a CoA Request signaling the start of accounting. During that time, the MN could conceivably take actions that would be restricted by the policy dictated by the CoA SUT.

NOTES:

To obtain accurate Black Hole measurements, the User-Name AVP must be included in Accounting Request messages received by the node and each MN can have only one accounting session.
In the Summary view, the minimum and maximum measurements report the minimum and maximum values observed across all test cases during the life of the test session. Test case measurements report the values observed over the life of the test case.

CoA Maximum Black Hole Time — The maximum time recorded for a MN session.
CoA Minimum Black Hole Time — The minimum time recorded for a MN session.
CoA Black Hole Test Count — The number of MN sessions measured.
CoA Average Black Hole Time— The average time measured for all MN sessions.

Error Counters

The following measurements report errors encountered by the node.

CoA Request Timeout (Authentication) — The number of times Retry Time expired while waiting for a response to an authentication CoA Request.
CoA Request Timeout (Accounting) — The number of times Retry Time expired while waiting for a response to an accounting CoA Request.
CoA Response Authentication Failures (Authentication) — The number of times an authentication CoA response contained an invalid Response Authenticator.
CoA Response Authentication Failures (Accounting) — The number of times an accounting CoA response contained an invalid Response Authenticator