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IP SLA Test frequency

I've set up VoIP Monitor to test the call quality every 5 minutes. But when I look at the IP SLA output from the router CLI it doesn't look right to me :

xyz#sho ip sla monitor statistics
Round trip time (RTT)   Index 1
        Latest RTT: 62 ms
Latest operation start time: 10:08:25.357 EST Wed Jan 9 2008
Latest operation return code: OK
RTT Values
        Number Of RTT: 100
        RTT Min/Avg/Max: 62/62/64 ms
Latency one-way time milliseconds
        Number of one-way Samples: 100
        Source to Destination one way Min/Avg/Max: 32/32/34 ms
        Destination to Source one way Min/Avg/Max: 29/29/31 ms
Jitter time milliseconds
        Number of Jitter Samples: 99
        Source to Destination Jitter Min/Avg/Max: 1/1/2 ms
        Destination to Source Jitter Min/Avg/Max: 1/1/2 ms
Packet Loss Values
        Loss Source to Destination: 0           Loss Destination to Source: 0
        Out Of Sequence: 0      Tail Drop: 0    Packet Late Arrival: 0
Voice Score Values
        Calculated Planning Impairment Factor (ICPIF): 11
MOS score: 4.06
Number of successes: 12
Number of failures: 0
Operation time to live: 0

It is now 11AM EST. Shouldn't this time stamp be every 5 minutes? The Orion charts and data have points every 5 minutes it seems. Just wondering if something isn't right here.

BB

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Accepted answers

All comments

Haley

The network test interval, default of 5 minutes, determines how often VoIP Monitor polls the devices for the voice quality statistics. This setting is not part of the IP SLA operation commands.

BryanBecker

It says "This controls how often a burst of test traffic is sent. Note that this change only takes effect when IP SLA operations are created or recreated." This to me sounds like that's the frequency Orion sends the SNMP write to the router to perform a test.

BB

Haley

The description is misleading. A more appropriate description would be "The period between collections of test traffic.". I have noted this issue and it will be updated in a later release.

BryanBecker

So how does this really work then? Something has to tell the router when to perform a test. It seems to me the VoIP Monitor is doing that.

BB