We are a Cisco shop, so we use "ip sla" feature of newer IOS releases with CiscoWorks LMS. Netflow is useful for trafic monitoring, but for latency and jitter, the cisco featureset is really nice.
For example, between two of our voice gateway boxes (running sip trunking
between them) in NY & SF:
rtr-nyvoip#show ip sla statistics aggregated 1
IPSLAs aggregated statistics
IPSLA operation id: 1
Start Time Index: .16:15:07.749 EDT Tue Jun 16 2009
Type of operation: udp-jitter
Voice Scores:
MinOfICPIF: 11 MaxOfICPIF: 11 MinOfMOS: 4.6 MaxOfMOS: 4.6
RTT Values:
Number Of RTT: 18000 RTT Min/Avg/Max: 91/91/96
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: 17982
Number of DS Jitter Samples: 17982
Source to Destination Jitter Min/Avg/Max: 0/1/4 milliseconds
Destination to Source Jitter Min/Avg/Max: 0/1/4 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
Number of successes: 18
Number of failures: 0
Start Time Index: .15:15:07.749 EDT Tue Jun 16 2009
Type of operation: udp-jitter
Voice Scores:
MinOfICPIF: 11 MaxOfICPIF: 11 MinOfMOS: 4.6 MaxOfMOS: 4.6
RTT Values:
Number Of RTT: 60000 RTT Min/Avg/Max: 91/91/103
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: 59940
Number of DS Jitter Samples: 59940
Source to Destination Jitter Min/Avg/Max: 0/1/11 milliseconds
Destination to Source Jitter Min/Avg/Max: 0/1/7 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
Number of successes: 60
Number of failures: 0
The config is:
ip sla responder
ip sla logging traps
ip sla 1
udp-jitter x.x.x.x 12420 source-ip x.x.x.x codec g729a
ip sla schedule 1 life forever start-time now
----
Matthew Huff | One Manhattanville Rd
OTA Management LLC | Purchase, NY 10577
http://www.ox.com | Phone: 914-460-4039
aim: matthewbhuff | Fax: 914-460-4139
> -----Original Message-----
> From: [email protected] [mailto:cisco-nsp-
> [email protected]] On Behalf Of harbor235
> Sent: Tuesday, June 16, 2009 3:46 PM
> To: [email protected]
> Subject: [c-nsp] Network Perefromance
>
> I wanted to ping everyone on tools they were using to understand the
> performace of their
> network, specifically, measuring packet loss, latency, and jitter.
>
> mike
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