Thanks to all for their info.
---------------------
Alain Menezes
ASLK-CGER Services GIE Tel.: +32 2 228.55.74
Rue Fossé-aux-Loups, 48 Fax.: +32 2 228.83.69
1000 Bruxelles Email:
a.menezes@aslk-cger.be
> -----Original Message-----
> From: Nicaud Phil [SMTP:pnicaud@WOOLWORTHS.COM.AU]
> Sent: jeudi 4 mars 1999 23:02
> To: NV-L@UCSBVM.UCSB.EDU
> Subject: Re: Checksum
>
> Hi Al
>
> FTP uses TCP/IP which guaranties transport error free or the Data is
> retransmitted. FTP opens a session to the remote site and closes it
> when the
> entire file has been sent. The receiver should then take the
> transmitted
> file from its temp buffer and move it the its required directory.
>
> TFTP is similar but it is not session based. It uses UDP/IP which
> means that
> there are no-retransmissions on loss/erroneous data. TFTP however
> places a
> checksum on the entire file to ensure successful transfer. The
> receiver
> removes the checksum once the file has been successfully received.
> Failure
> of the transfer will cause the entire transfer to be restarted.
>
> Both methods should provide a reliable file transfer. The most common
> cause
> for problems is when a binary file is transferred in ASCII Mode.
>
> I have no idea what Netview use to transfer files
>
> To do external data verification and if both systems are Unix/Dos
> systems,
> you can use many of the checksum programs such as Solaris "cksum" or
> even
> wrap the file within tar or gzip. "cksum will calculate the file CRC
> on both
> systems, tar does it own checksum.
>
> I hope this helps
>
> Phil
>
>
> > -----Original Message-----
> > From: MENEZES, ALAIN [SMTP:a.menezes@ASLK-CGER.BE]
> > Sent: Thursday, 4 March 1999 20:28
> > To: NV-L@UCSBVM.ucsb.edu
> > Subject: Checksum
> >
> > Hi,
> >
> > Is there anyone out there having a checksum
> algorithm/procedure/script ?
> > I'd like a way to check if a download has been done without errors.
> >
> > Do the following "protocols" garantee faultless download ?
> > -> FTP
> > -> TFTP
> > -> Tivoli Framework SWD (don't know what protocol is used)
> >
> > Thanks
> >
> > Al
> > ---------------------
> > Alain Menezes
> > ASLK-CGER Services GIE Tel.: +32 2
> 228.55.74
> > Rue Fossé-aux-Loups, 48 Fax.: +32 2
> > 228.83.69
> > 1000 Bruxelles Email:
> > a.menezes@aslk-cger.be
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