*BSD News Article 14056


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From: mycroft@hal.gnu.ai.mit.edu (Charles Hannum)
Newsgroups: comp.os.386bsd.questions
Subject: Re: NFS PROBLEMS AFTER PATCH 0.2.2
Date: 5 Apr 1993 18:47:58 -0400
Organization: dis
Lines: 18
Message-ID: <1pqcuu$1li5@hal.gnu.ai.mit.edu>
References: <733572001snz@feline.demon.co.uk> <C4ttG9.2qB@news.cso.uiuc.edu>
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In article <C4ttG9.2qB@news.cso.uiuc.edu> rkb55989@uxa.cso.uiuc.edu
(Rafal) writes:
>
> I am running a 0.2.1 system, and am seeing similar problems. Just for
> reference, I am running over SLIP, with my MTU [on the BSD box] set
> at the standard 296.  The terminal server I connect to claims it is
> using an MTU of 1536, but all works with the standard BSD MTU, except
> NFS [well, it works somewhat].

It sounds like 386BSD is not being intelligent enough to fragment the
large UDP packets that NFS uses.  Try using the options
`rsize=256,wsize=256' (or smaller) with a MTU of 296.

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