Ethernet OAM BCPs Please are there any yet???

Jonathon Exley Jonathon.Exley at kordia.co.nz
Thu Sep 27 22:11:36 UTC 2012


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.vitkovsky at swan.sk]
> Sent: Thursday, 27 September 2012 7:39 p.m.
> To: Jonathon Exley; nanog at 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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