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Date:      Thu, 19 Mar 1998 21:51:16 -0800
From:      David Greenman <dg@root.com>
To:        Becca Anderson <becca@worldint.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: TCP/IP Problems 
Message-ID:  <199803200551.VAA15190@implode.root.com>
In-Reply-To: Your message of "Fri, 20 Mar 1998 00:38:08 EST." <Pine.BSF.3.91.980320002802.15396A-100000@win3.worldint.com> 

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>this message (on the receiving machine) when the file transfer stopped at 
>10k.
>
>23:28:07.039841 O   60 03 0021: tsf1.lv.gle.verio.net > 
>devel.worldint.com: icmp
>: source quench (DF) (ttl 252, id 53327)

   A source quench occurs when there are no more receive buffers available,
so this sounds like a problem on the receiving machine rather than the
transmitting machine as previously assumed. What do the stats look like
on the receiver? Also, 'netstat -di' would be useful since it shows drops
due to no buffers available.

>77 mbufs in use:
>        65 mbufs allocated to data
>        5 mbufs allocated to packet headers
>        6 mbufs allocated to protocol control blocks
>        1 mbufs allocated to socket names and addresses
>64/128 mbuf clusters in use

   ...looks fine.

-DG

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

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