12-24-2011 12:34 AM
Hi,
I wanted to monitor the packet loss in my link using IP SLA. So i configured ipsla jitter and started monitoring it. When i analyze the output i found that ip sla statictics shows heavy drop in my link, but when i ping from the router no drop is observed. Why there is such difference in the out put. I read that normal ping and icmp jitter uses different icmp types messages but now i am confused whether my link proper or not. Which data i should belive.
Here is my config and statistics:
ip sla 2166
icmp-jitter 10.70.194.137 num-packets 100
frequency 300
ip sla schedule 2166 life forever start-time now
Type of operation: icmpJitter
Latest RTT: 7 milliseconds
Latest operation start time: 13:56:49.468 IST Sat Dec 24 2011
Latest operation return code: OK
RTT Values:
Number Of RTT: 92 RTT Min/Avg/Max: 3/7/158
Latency one-way time:
Number of Latency one-way Samples: 0
Source to Destination Latency one way Min/Avg/Max: 0/0/0
Destination to Source Latency one way Min/Avg/Max: 0/0/0
Jitter Time:
Number of Jitter Samples: 89
Source to Destination Jitter Min/Avg/Max: 1/4/20
Destination to Source Jitter Min/Avg/Max: 1/1/1
Packet Late Arrival: 0
Out Of Sequence: 0
Source to Destination: 0 Destination to Source 0
In both Directions: 0
Packet Skipped: 0
Packet Loss: 8
Loss Period Length Min/Max: 1/7
Number of successes: 1
Number of failures: 0
Operation time to live: Forever
12-24-2011 08:04 AM
Hello mate !
For how long you left the IP sla running ? 24 hours ?
I would disable session time out in your router, set the IP Sla running for 60 minutes for example and in the meantime i would leave a ping running too with high repetition in the background.
I saw you only had 8 pkt loss.... we need two "tools" running for a good comparison, tried what i proposed and let me know.
cheers
12-24-2011 06:09 PM
Hi,
Thx for the suggestion,
Frequency is configred as 300 sec.so operation will run for evey five min. I was pinging with 10000 packets manually but i never found a drop. But for every opeartion of IPSLA gives me atleast 5 to 20 drops.
04-10-2012 08:40 AM
Dear All,
i have also the similar issue,is the packet loss measurement is number of packet or its the avrage percentage value?
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