Hi All,
Hoping someone could help me explain why I see high PacketLossDS on a voice jitter IPSLA I have set up between two of my sites. I have a number of other sites working fine. This site with the high reported packet loss has the highest latency due to geographical distance from my site (about 250ms). I don't see any packet loss with a standard ICMP IPSLA. There are no firewalls in the way. Below are an extract from my router showing the config and the latest results. Both sides /routers show this high PacketlossDS value.
Entry number: 40007
Owner: SW.IpSla.DCPWVSOLA01.NetPerfMon
Tag:
Type of operation to perform: jitter
Target address: 10.x.y.z
Source address: 10.a.b.c
Target port: 17000
Source port: 0
Operation timeout (milliseconds): 180000
Codec Type: g711ulaw
Codec Number Of Packets: 100
Codec Packet Size: 100
Codec Interval (milliseconds): 20
Advantage Factor: 0
Type Of Service parameters: 0xB8
Verify data: No
Vrf Name:
Control Packets: enabled
Operation frequency (seconds): 300
Next Scheduled Start Time: Start Time already passed
Group Scheduled : FALSE
Life (seconds): Forever
Entry Ageout (seconds): 3600
Recurring (Starting Everyday): FALSE
Status of entry (SNMP RowStatus): Active
Threshold (milliseconds): 1000
Number of statistic hours kept: 2
Number of statistic distribution buckets kept: 1
Statistic distribution interval (milliseconds): 20
Enhanced History:
Start Time Index: 19:32:52.071 UTC Thu Mar 11 2010
Number of successful operations: 12
Number of operations over threshold: 0
Number of failed operations due to a Disconnect: 0
Number of failed operations due to a Timeout: 0
Number of failed operations due to a Busy: 0
Number of failed operations due to a No Connection: 0
Number of failed operations due to an Internal Error: 0
Number of failed operations due to a Sequence Error: 0
Number of failed operations due to a Verify Error: 0
Voice Scores:
MinOfICPIF: 26 MaxOfICPIF: 26 MinOfMOS: 3.45 MaxOfMOS: 3.45
RTT Values:
NumOfRTT: 288 RTTAvg: 248 RTTMin: 246 RTTMax: 250
RTTSum: 71454 RTTSum2: 17728204
Packet Loss Values:
PacketLossSD: 0 PacketLossDS: 875
PacketOutOfSequence: 0 PacketMIA: 37 PacketLateArrival: 0
InternalError: 0 Busies: 0 PacketSkipped: 0
Jitter Values:
MinOfPositivesSD: 1 MaxOfPositivesSD: 2
NumOfPositivesSD: 59 SumOfPositivesSD: 64 Sum2PositivesSD: 74
MinOfNegativesSD: 1 MaxOfNegativesSD: 3
NumOfNegativesSD: 46 SumOfNegativesSD: 66 Sum2NegativesSD: 110
MinOfPositivesDS: 1 MaxOfPositivesDS: 2
NumOfPositivesDS: 30 SumOfPositivesDS: 33 Sum2PositivesDS: 39
MinOfNegativesDS: 1 MaxOfNegativesDS: 1
NumOfNegativesDS: 28 SumOfNegativesDS: 28 Sum2NegativesDS: 28
Interarrival jitterout: 0 Interarrival jitterin: 0
One Way Values:
NumOfOW: 288
OWMinSD: 122 OWMaxSD: 126 OWSumSD: 35672 OWSum2SD: 4418572
OWMinDS: 123 OWMaxDS: 126 OWSumDS: 35782 OWSum2DS: 4445782
Many Thanks