I have set up a Voice/UDP jitter IPSLA between a local router and a remote site on my network. The latency to the site is 250ms. All looks ok except that I get some starange results for Packet Loss of 80%. I know this isn't really the case else I would have users screaming. A staight ICMP IPSLA looks ok. I'm wondering what exactly the IPSLA is measuing to get this results and why there is a loss source to destination, I can ping source to destination using extended ping without issue. . Can anyone help.
Here is a section of the output
Round Trip Time (RTT) for Index 40000 Latest RTT: 249 ms Latest operation start time: 12:20:13.384 UTC Thu Feb 18 2010 Latest operation return code: OK RTT Values Number Of RTT: 28 RTT Min/Avg/Max: 247/249/251 ms Latency one-way time milliseconds Number of Latency one-way Samples: 28 Source to Destination Latency one way Min/Avg/Max: 127/128/130 ms Destination to Source Latency one way Min/Avg/Max: 120/121/123 ms Jitter time milliseconds Number of SD Jitter Samples: 11 Number of DS Jitter Samples: 27 Source to Destination Jitter Min/Avg/Max: 0/1/2 ms Destination to Source Jitter Min/Avg/Max: 0/1/2 ms Packet Loss Values Loss Source to Destination: 70 Loss Destination to Source: 0 Out Of Sequence: 0 Tail Drop: 2 Packet Late Arrival: 0 Voice Score Values Calculated Planning Impairment Factor (ICPIF): 26 Mean Opinion Score (MOS): 3.45 Number of successes: 3 Number of failures: 0 Operation time to live: Forever
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