[185672] in North American Network Operators' Group
Re: Long-haul 100Mbps EPL circuit throughput issue
daemon@ATHENA.MIT.EDU (Theodore Baschak)
Thu Nov 5 21:27:33 2015
X-Original-To: nanog@nanog.org
From: Theodore Baschak <theodore@ciscodude.net>
Date: Thu, 5 Nov 2015 20:27:27 -0600
To: NANOG Operators' Group <nanog@nanog.org>
In-Reply-To: <CAH+2GV+8kO1LEiCWri2NYyB5GsUbsc02uSTmVjK5+_AQgcVQqQ@mail.gmail.com>
Errors-To: nanog-bounces@nanog.org
> On Nov 5, 2015, at 8:18 PM, Pablo Lucena <plucena@coopergeneral.com> =
wrote:
>=20
> =E2=80=8BI realized I made a typo:
switch.ch has a nice bandwidth delay product calculator.
https://www.switch.ch/network/tools/tcp_throughput/ =
<https://www.switch.ch/network/tools/tcp_throughput/>
Punching in the link spec from the original post, gives pretty much =
exactly what you said Pablo, including that it'd get ~6.999 megabits =
with a default 64k window.
BDP (100 Mbit/sec, 75.0 ms) =3D 0.94 MByte=20
required tcp buffer to reach 100 Mbps with RTT of 75.0 ms >=3D 915.5 =
KByte=20
Theo
