I don't know if any Y.1731 gear will do anything other than constant interval probes. I'm also not sure what the values of randomly spaced probes would be. As far as I know the Y.1731 performance measurement probes are intended to be used to obtain performance data on circuits with as little impact on the available bandwidth as possible. Using a random departure time sounds like the sort of load test where you want to generate a synthetic data stream and consume bandwidth.
Jonathon > -----Original Message----- > From: Adam Vitkovsky [mailto:adam.vitkov...@swan.sk] > Sent: Thursday, 27 September 2012 7:39 p.m. > To: Jonathon Exley; nanog@nanog.org > Subject: RE: Ethernet OAM BCPs Please are there any yet??? > > Thank you so much Jonathon. > This is exactly what I what I was searching for. > Oh and yes I should have mentioned I'd like to do the Y.1731 and measure > the delay and delay variance > > Just yesterday evening I found a great article about how ATT did theirs > active measurements though for IP - wondering if I could do the same for > my > Y.1731 > They used dedicated servers and I'll be running this form the routers > ME3600X and CX and ASR9K so I'm a bit worried about the scaling of the > whole thing > > ATT basically used two probes and each 24-hour day is divided into 96 test > cycles of 15 minutes > > A Poisson probe sequence of duration equal to the test cycle > characteristics: > - Poisson distribution with average interarrival time of 3.3 s > - Packet size of 278 bytes, including headers > - UDP protocol > > Two periodic probe sequences in every test > characteristics: > - Interval of 20 ms between successive packets (or 50 packets/s) > - 1 min duration > - Random start time within the 15 min cycle > - Packet size of 60 bytes (including headers) > - UDP protocol > > > adam This email and attachments: are confidential; may be protected by privilege and copyright; if received in error may not be used, copied, or kept; are not guaranteed to be virus-free; may not express the views of Kordia(R); do not designate an information system; and do not give rise to any liability for Kordia(R).
