[130785] in North American Network Operators' Group

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Re: How to have open more than 65k concurrent connections?

daemon@ATHENA.MIT.EDU (Greg Whynott)
Thu Oct 14 12:55:34 2010

From: Greg Whynott <Greg.Whynott@oicr.on.ca>
To: "D'Arcy J.M. Cain" <darcy@druid.net>
Date: Thu, 14 Oct 2010 12:54:05 -0400
In-Reply-To: <20101014124204.8cd08314.darcy@druid.net>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

this has nothing to do with ports.    as others have said,  think of a web =
server.  httpd listens on tcp80 (maybe 443 too) and all the facebooker's on=
 earth hit that port.  could be hundreds of thousands,  and only one port. =
    Available memory and open files will be the limiting factor as to how m=
any established connections you can maintain with one host,  providing ther=
e are not any external limitations such as port speed.



On Oct 14, 2010, at 12:42 PM, D'Arcy J.M. Cain wrote:
>
> Hint:  That gives you 65K connections *per interface*.  You can listen
> on more than one interface.


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