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Long-haul 100Mbps EPL circuit throughput issue
- Subject: Long-haul 100Mbps EPL circuit throughput issue
- From: bill at herrin.us (William Herrin)
- Date: Thu, 5 Nov 2015 23:40:22 -0500
- In-reply-to: <CAH+2GVLSUYMo-XGdQc1knYEq1hA13=NOQf4jP=2fiNFMQoC5aw@mail.gmail.com>
- References: <CALKrK4na=wKSi=vf4EgPetoXJxaHTxfGt8HXYr6CE+xPk1Vy4g@mail.gmail.com> <2af1f897aece8062f5744396fed1559a.squirrel@66.201.44.180> <CAH+2GVLSUYMo-XGdQc1knYEq1hA13=NOQf4jP=2fiNFMQoC5aw@mail.gmail.com>
On Thu, Nov 5, 2015 at 9:17 PM, Pablo Lucena <plucena at coopergeneral.com> wrote:
> With default window size of 64KB, and a delay of 75 msec, you should only
> get around 7Mbps of throughput with TCP.
Hi Pablo,
Modern TCPs support and typically use window scaling (RFC 1323). You
may not notice it in packet dumps because the window scaling option is
negotiated once for the connection, not repeated in every packet.
Regards,
Bill Herrin
--
William Herrin ................ herrin at dirtside.com bill at herrin.us
Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>