Which OID will help me to calculate jitter,delay.packet loss of voip networ

[shivaniwagh]

Help me to get the exact OID from rttMonMIB to calculate the delay,jitter & packet loss.

Thanks

[David Stanford]

For Jitter have a look at the objects under the rttMonJitterStatsTable

For packetloss look at rttMonJitterStatsPacketLossSD and rttMonJitterStatsPacketLossDS

For delay:

rttMonLatestJitterOperOWSumSD rttMonLatestJitterOperOWSum2SD

rttMonLatestJitterOperOWMinSD

rttMonLatestJitterOperOWMaxSD rttMonLatestJitterOperOWSumDS rttMonLatestJitterOperOWSum2DS rttMonLatestJitterOperOWMinDS rttMonLatestJitterOperOWMaxDS rttMonLatestJitterOperNumOfOW

http://tools.cisco.com/Support/SNMP/do/BrowseMIB.do?local=en&step=2&submitClicked=true&mibName=CISCO-RTTMON-MIB#contents

[shivaniwagh]

Thanks

But any one of the OID can be the data for delay??

for jitter I have used this rttMonLatestJitterOperMaxOfPositivesSD & rttMonLatestJitterOperMaxOfNegativesSD as well for rttMonLatestJitterOperMaxOfPositivesDS & rttMonLatestJitterOperMaxOfNegativesDS

I have one more query.I am not able to understand the Jitter Stats Table,as it gives two values.Ex.

snmpwalk $ip 1.3.6.1.4.1.9.9.42.1.3.5.1.12

Result:

cisco.ciscoMgmt.42.1.3.5.1.12.2.4214297322 : Counter: 148

cisco.ciscoMgmt.42.1.3.5.1.12.2.4214657322 : Counter: 11

Please help me to understand this,why it gives two values.?

Thanks,

Shivani

[David Stanford]

How many jitter operations have you configured? It looks like 2 as there are 2 different indices above -- 4214297322 and 4214657322

These each are the sum of number of all positive jitter values from packets sent from source to destination

[shivaniwagh]

Yes the MIB of rttMonJitterStats gives me the values for the two indices.I have no idea why its giving two.for latest it gives for only one..

[UTVi-NetAdmin]

Hi Shivani,

Some of these entries hold information for two hours, witht the statistics being grouped together over 60 minutes, hence the 2 sets of values.

The last value is the most current. These are then moved to the other entry and are removed from table after 120 minutes. i.e. a 'sliding window'.

HTH,

Mark