[AusNOG] Multiport 95th Calculations

[Tim Hoffman]

The industry standard is to aggregate the stats, then perform the 95th over
the aggregate - rather than 95th, then add the 95ths together.

Cheers,
Hoff

On Wed, Jul 29, 2015 at 11:34 PM, Patrick Cole <z at amused.net> wrote:

> Option A would be the only option IMHO.  All the other options
> seriously favour the customer compared to a single link.
>
> Opt A accurately accounts for the amount of instantaneous peak
> utilisation that occurs on the the service providers' network
> as a result of the two ports.
>
> As we all know BW purchase is based on peak utilisation so why
> should the customer expect any different?
>
> Patrick
>
> Thu, Jul 30, 2015 at 06:02:15AM +0000, Ben Cornish wrote:
>
>
> >    Hey All,
> >
> >
> >
> >    I'm curious on feedback from the industry on how everyone would
> expect a
> >    carrier to calculate 95th usage over a multiple link transit product.
> >
> >
> >
> >    Client takes 2 or more Transit Ports with a provider for redundancy
> >    reasons or for whatever reason they want - ie split backbone.
> >
> >    Ie ports at 2 or more different locations for whatever reason.
> >
> >    They would like to buy 95th percentile transit - bundled over multiple
> >    ports.
> >
> >
> >
> >    For this scenario - Let's say they want to commit to 500Mb/sec of
> transit
> >    split over 2x 1Gig ports and pay an excess for anything over 500Mb/sec
> >
> >
> >
> >    Would you assume the provider :
> >
> >
> >
> >    A:
> >
> >    Aggregates the 2x Links usage figures for the month and then perform
> 95th
> >    on the totals
> >
> >    Ie Link A + Link B Then do 95th calculation. (Do this on Upload and
> >    download separately)
> >
> >    Pick the highest of the upload or the download as the top figure. Bill
> >    excess if over 500
> >
> >
> >
> >    Or
> >
> >
> >
> >    B:
> >
> >    Calculate 95th on each link and add the 95th of each link together to
> get
> >    the total 95th.
> >
> >    Ie 95th of Link A + 95th of Link B = Total (Do this on Upload and
> download
> >    separately)
> >
> >    Pick the highest of the upload or the download as the top figure. Bill
> >    excess if over 500
> >
> >
> >
> >    One last question - can anyone think of any way to actually abuse
> option
> >    A...
> >
> >
> >
> >
> >
> >    Ben Cornish
> >    General Manager
> >
> >    Description: Description: cid:image001.png at 01CCB4C2.B40A97F0
> >
> >    Over the Wire Pty Ltd - An Impirical Company
> >    Level 3, 24 Little Edward St, Spring Hill QLD 4000
> >    t    +61 7 3847 9292
> >
> >    m    +61 417 617 204
> >    e   ben.cornish at overthewire.com.au     www.overthewire.com.au
> >
> >
> >
> >
> >
> >
>
>
>
> > _______________________________________________
> > AusNOG mailing list
> > AusNOG at lists.ausnog.net
> > http://lists.ausnog.net/mailman/listinfo/ausnog
>
>
> --
> Patrick Cole <z at wwwires.com>
> Senior Network Specialist
> World Without Wires
> PO Box 869. Palm Beach, QLD, 4221
> Ph:  0410 626 630
> _______________________________________________
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>



-- 
Tim Hoffman | Twitter, Inc.
1355 Market St. | San Francisco, CA | 94103
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