From owner-freebsd-net  Mon Jul  9 15:13:35 2001
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From: Luigi Rizzo <luigi@info.iet.unipi.it>
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Subject: Re: sysctls keepidle and keepintvl
In-Reply-To: <20010709230512.A918@gaia.home.rdls.net> from Richard Smith at "Jul
 9, 2001 11:05:13 pm"
To: Richard Smith <rdls@satamatics.com>
Date: Tue, 10 Jul 2001 00:07:55 +0200 (CEST)
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> Please cc me, as I'm not on this list.
> 
> I am using 4.3-RELEASE, and investigating why I don't see
> any keepalives (using tcpdump) on my connections.
> 
> The default values are as follows:
> 	net.inet.tcp.keepidle = 7200000
> 	net.inet.tcp.keepintvl = 75000
> 
> It seems to me that the keepalive interval is being set
> by keepidle, thus setting keepidle = 20000, generates 
> keepalives at 20s intervals.

whatever is used, isn't the interval in seconds ? If so
you must be very patient to see something...

	luigi

> Looking at the comments in tcp_var.h, it should be 
> keepintvl that sets this interval. Otherwise, why
> have such a large value for keepidle?
> 
> Is this a bug? Or have I missed something,
> 
> Many thanks,
> Rich.
> 
> -- 
> Richard Smith
> Network Systems Director
> Satamatics Ltd
> Green Lane, Tewkesbury, GL20 8HD, United Kingdom
> Tel: +44 1684 278610
> Fax: +44 1684 278611
> 
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