[156853] in North American Network Operators' Group
RE: Ethernet OAM BCPs Please are there any yet???
daemon@ATHENA.MIT.EDU (Jonathon Exley)
Thu Sep 27 18:12:00 2012
From: Jonathon Exley <Jonathon.Exley@kordia.co.nz>
To: "nanog@nanog.org" <nanog@nanog.org>
Date: Thu, 27 Sep 2012 22:11:36 +0000
In-Reply-To: <000b01cd9c83$3a6181d0$af248570$@swan.sk>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
I don't know if any Y.1731 gear will do anything other than constant interv=
al probes. I'm also not sure what the values of randomly spaced probes woul=
d 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 a=
nd consume bandwidth.
Jonathon =
> -----Original Message-----
> From: Adam Vitkovsky [mailto:adam.vitkovsky@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
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