[46294] in North American Network Operators' Group
Re: Transatlantic response times.
daemon@ATHENA.MIT.EDU (Stephen J. Wilcox)
Mon Mar 25 10:31:31 2002
Date: Mon, 25 Mar 2002 15:30:24 +0000 (GMT)
From: "Stephen J. Wilcox" <steve@opaltelecom.co.uk>
To: "Pistone, Mike" <Mike.Pistone@msfc.nasa.gov>
Cc: "'nanog@merit.edu'" <nanog@merit.edu>
In-Reply-To: <3C5121D8A8C5554AA0DCA027FF67AA9703B23771@msfcmsg6.msfc.nasa.gov>
Message-ID: <Pine.LNX.4.21.0203251528290.25195-100000@staff.opaltelecom.net>
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London to NYC 70ms RTT
London to Seattle 150ms RTT
On Mon, 25 Mar 2002, Pistone, Mike wrote:
>
> I wasn't really sure where to post this, but I figured NANOG would have some
> insight or at least experience here.
>
> I was curious if anybody would share what they consider to be average or
> acceptable transatlantic ping response times over a T1.
> I know there are tons of variables here, but I am looking for ballpark
> figures.
> Assume that utilization on the circuit is extremely low, and you are
> measuring point to point across the line. You can also assume no other
> bottlenecks effecting the response times (router performance, or what not).
> Should you see a ~150ms trip? 250ms? 450ms???
>
> Also, if possible, include the to and from info. Obviously NYC to London
> is a bit different than Dallas to Prague or something.
>
> Is there any equation to estimate response times? For example, if your
> circuit from A to Z has a 500ms avg response, than that equates to a circuit
> distance of aprox. 5000 miles or something?
>
> Thanks in advance,
>
>
> Mike
>
>
>
>
--
Stephen J. Wilcox
IP Services Manager, Opal Telecom
http://www.opaltelecom.co.uk/
Tel: 0161 222 2000
Fax: 0161 222 2008
