Re: Long-haul 100Mbps EPL circuit throughput issue

[William Herrin <bill () herrin us>]

On Thu, Nov 5, 2015 at 9:17 PM, Pablo Lucena <plucena () 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 () dirtside com  bill () herrin us
Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>