Diameter Signaling Router (DSR) - Wrong Values for Measurement Parameters "TmAnswerTimeAvg" & "TmAnswerTimePeak" in MP Performace Report

Asset ID:	1-72-2179662.1
Update Date:	2016-09-05
Keywords:

Solution Type Problem Resolution Sure

Solution 2179662.1 : Diameter Signaling Router (DSR) - Wrong Values for Measurement Parameters "TmAnswerTimeAvg" & "TmAnswerTimePeak" in MP Performace Report

Applies to:

Oracle Communications Diameter Signaling Router (DSR) - Version DSR 7.0.1 and later
Tekelec

Symptoms

Very high value for MP Performance KPI TmAnswerTimeAvg & TmAnswerTimePeak

TmAnswerTimeAvg is defined as Average time (in milliseconds) to process an Answer message. This is the time from when a Diameter Answer message is read from the ingress peer's SCTP/TCP socket until it is sent to the egress peer’s SCTP/TCP socket.

TmAnswerTimePeak is defined as Peak time (in milliseconds) to process an Answer message. This is the time from when a Diameter Answer message is read from the ingress peer’s SCTP/TCP socket until it is sent to the egress peer’s SCTP/TCP socket.

Here is sample from MP performance report showing high value:

Report Type: MeasSimple
Report Date:
Product: Oracle Communications Diameter Signaling Router 7.0.1.0.0-70.28.0
Report Description:
Scope: SOAM
Group: MP Performance
Interval:
Start:
End:
Count:

Timestamp                  Scope Type   Scope    Server     TmAnswerTimeAvg     TmAnswerTimePeak
2016-08-31 07:00:00 CDT    NE           SOAM     MP1        3060078283             4292843555
2016-08-31 08:00:00 CDT    NE           SOAM     MP1        2495628730             4292843555
2016-08-31 09:00:00 CDT    NE           SOAM     MP1        2111400149             4292843556

Cause

This is a known Bug
Bug# 21627900 - Cross-DSR timing measurements incorrect

Solution

“Bug# 21627900 - Cross-DSR timing measurements incorrect” is fixed in DSR 7.1.1.0.0_71.27.0 or higher release.
It is recommended to upgrade to DSR 7.1.1.0.0_71.27.0 or higher release to fix this issue

References

<BUG:21627900> - CROSS-DSR TIMING MEASUREMENTS INCORRECT

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