FCM9002 USER MANUAL
76-02-095 Rev.B
Page 137 of 145
4.7.2.4.4.3 CIR Test
The CIR test will generate test traffic at a defined percentage of the flow CIR. If
available background traffic will also be generated. The test will run for the
defined test time and the test pass criteria are as defined by the flow SLA
parameters.
The CIR test aims to prove that the network is correctly provisioned to provide
the service within the SLA and for this reason should be run over an extended
period of time, upto 24 hours to ensure service stability.
4.7.2.4.4.3.1
CIR Test Rate
The test rate settings sets the percentage of CIR that will be generated. For
example, CIR = 50M, 95% = 47.5M and the CIR test will generate 47.5M of test
traffic on the flow under test.
Note, it is not advisable to actually test at 100% of CIR as due to small
differences in network timings the test is likely to fail even when correctly
provisioned, 99% being the highest value normally set.
4.7.2.4.4.3.2
CIR Test Time
This configuration item defines the duration of the CIR test. Whilst the Go/No Go
test aims to give a quick snapshot of the network, the CIR aims to prove the
service over an extended period. As such it is typical to run the CIR test for
between 1 and 24 hours.
4.7.2.4.4.4 CBS Test
In order to fully test the service the Y.1564 will test the burst capability of the
network. In this test, the traffic generator will be configured to generate bursts of
traffic where the burst size is defined as a percentage of the CBS and the bursts
spaced such that the overall traffic bandwidth does not exceed the configured
percentage of CIR.
4.7.2.4.4.4.1
CBS Test Rate
The CBS test rate defines the overall traffic rate as a percentage of the CIR for
the flow. In this test packets are generated in a burst at wirespeed, and then the
bursts are spaced such that the overall bandwidth averages out at the defined
percentage of CIR.
