From owner-freebsd-questions  Thu Jul 31 01:15:15 1997
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To: Terry Todd <tlt@badger.tltodd.com>
cc: freebsd-questions@FreeBSD.ORG
Subject: Re: No buffer space available 
In-reply-to: Your message of "Wed, 30 Jul 1997 18:01:17 CDT."
             <199707302301.SAA09724@badger.tltodd.com> 
From: David Greenman <dg@root.com>
Reply-To: dg@root.com
Date: Thu, 31 Jul 1997 01:16:09 -0700
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>I posted this once before and didn't hear anything back but that may 
>have been because various people were on vacation.  This happened
>again last week and I had maxconcur set to 8.  My system is set up
>with a dedicated 28.8 dial up using pppd.  99% of the time it just 
>sits there and runs happily along.  I really like FreeBSD.
>Here's the main symptom that something is wrong:
>ping: sendto: No buffer space available
>After it gets in this state it will never recover by itself.
>Is there something else that I need to do if it happens again?

   Looks like it's caused by serial flow control. Is your modem an internal
or external? If it's external, it would be useful to look at RTS/CTS to see
if the modem is telling the computer to stop sending.

-DG

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