07-10-2009 07:38 PM - edited 03-06-2019 06:42 AM
Dear All,
Intermittent Jitter failure in Cisco 2821 router. Show IP SLA satistics output gives "Latest operation return code: Socket bind error". Reachability between source and destination is perfectly fine and no packet drops.
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Jitter configuration
======================
ip sla 8
udp-jitter <Destination IP> 99 source-ip <Source IP> source-port 99 num-packets 100
frequency 300
ip sla schedule 8 life forever start-time now ageout 3600
Jitter error
==========
CISCO2821#sh ip sla statistics 8
IPSLAs Latest Operation Statistics
IPSLA operation id: 8
Latest RTT: 0 milliseconds
Latest operation start time: *10:54:37.511 IST xx xx xx
Latest operation return code: Socket bind error
RTT Values:
Number Of RTT: 0 RTT Min/Avg/Max: 0/0/0 milliseconds
Latency one-way time:
Number of Latency one-way Samples: 0
Source to Destination Latency one way Min/Avg/Max: 0/0/0 milliseconds
Destination to Source Latency one way Min/Avg/Max: 0/0/0 milliseconds
Jitter Time:
Number of SD Jitter Samples: 0
Number of DS Jitter Samples: 0
Source to Destination Jitter Min/Avg/Max: 0/0/0 milliseconds
Destination to Source Jitter Min/Avg/Max: 0/0/0 milliseconds
Packet Loss Values:
Loss Source to Destination: 0 Loss Destination to Source: 0
Out Of Sequence: 0 Tail Drop: 0
Packet Late Arrival: 0 Packet Skipped: 0
Voice Score Values:
Calculated Planning Impairment Factor (ICPIF): 0
Mean Opinion Score (MOS): 0
Number of successes: 0
Number of failures: 1181
Operation time to live: Forever
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Please suggest a solution.
07-11-2009 04:10 AM
Hi Michael,
I can suggest you 2 things:
1. In your configuration I do not see if you have enabled the ip sla responder on the destination router.
If not, you should enable it with the "ip sla responder" command.
2. Though it is not required to measure jitter, but to measure one-way packet delay it is required:
I suggest to configure NTP on both the 2821 router and the responder router so they have a common time source and their system times should be synchronized.
Cheers:
Istvan
07-13-2009 07:47 PM
Hi Istvan,
Thanks for the reply. I will implement IP SLA RESPONDER and NTP parameters on the router.
Thanks and Regards,
Manjesh Michael
07-14-2009 12:50 AM
Hi,
Important:
you should configure the destination router as an ip sla responder.
NTP should be configured on both routers so system times are closely synchronized. In that case you will get the most exact measurements.
But for jitter measurements only it is not required.
Cheers:
Istvan
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