NetNews Usenet Archive 1992 #26/NN_1992_26.iso/spool/comp/unix/aix/11497

Internet Message Format | 1992-11-11 | 1.6 KB

Xref: sparky comp.unix.aix:11497 comp.protocols.nfs:2751
Newsgroups: comp.unix.aix,comp.protocols.nfs
Path: sparky!uunet!well!nlane
From: [e-mail] (Nathan D. Lane)
Subject: UDP Checksum on NFS in AIX 3.2?
Message-ID: <[e-mail]>
Summary: Are they on by default or can they be turned on, aka Sun
Keywords: NFS udp checksum
Sender: [e-mail]
Organization: Whole Earth 'Lectronic Link
Date: Thu, 12 Nov 1992 00:57:11 GMT
Lines: 27

I am attempting to run NFS over a slip link on AIX 3.2.2 at 19.2K.  Now, I know
that slip is no way to run NFS, but I am conducting reliability and feasibility
tests for the VERY occassional use of this access method.

I am using mount -o rsize=512,wsize=512 to keep the bandwidth of the line
conserved as much as possible.

Now:  I have had some problems with corrupted files on writes to a machine
on the other side of the link.  I would like to turn on udp checksums to
increase the reliability.  I know on Sun one can patch /vmunix to turn
on udp checksums.  I have checked "no" to see if udp checksums are one of the
options and they are not.  An info search turned up nothing w/ "nfs,udp,
checksum".  But when checking "udp,checksum" it said that they could be enabled by
a C udp program.  I guess that means that I could program my own NFS or get
the source to turn them on, but that seems like rebuilding the wheel.

Anyone know if udp checksums can be turned on in AIX 3.2.2?
My SE is out of town and probably wouldn't know anyway :(

Thanks in advance for any help.

-Nathan Lane
Trico Title Company, Santa Barbara, CA
[e-mail]