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To: Khaled Samy <ksismail@cs.sfu.ca>
cc: freebsd-questions@FreeBSD.ORG
Subject: Re: No buffer space available. 
In-reply-to: Your message of "Mon, 17 Nov 1997 15:17:21 PST."
             <3.0.3.32.19971117151721.00917100@cs.sfu.ca> 
From: David Greenman <dg@root.com>
Reply-To: dg@root.com
Date: Mon, 17 Nov 1997 17:03:20 -0800
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>I work for Simon Fraser University research lab, we have FreeBSD 2.2.2 and
>we are trying to conofigure a dedicated SLIP connection between (2) PC's.
>
>I keep getting "No buffer space available" , when trying to "Spray", the
>commands we use :
>
>slattach -h -l -s 19200 -S sl0 /dev/cuaa1 &
>ifconfig sl0 inet <IP1> <IP2> up
>spray -c 80 -l 512 <IP2>  ------------------ This is when we get the "No
>Buffer space "
>
>Do you have any suggestions ?? I also increased the MTU to 1500, it is
>getting better,
>but still can't go beyond (C 50) while (Spraying), what do you think ???
>
>Your quick response will be extremely appreciated.

   It indicates that the interface output queue is full. By default, the
maximum queue depth is 50 packets.

-DG

David Greenman
Core-team/Principal Architect, The FreeBSD Project