Columbia Kermit/kermit.zip/newsgroups/misc.19970626-19970929/000067_news@newsmaster….columbia.edu _Tue Jul 15 20:08:11 1997.msg

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From: [e-mail] (Tye McQueen)
Newsgroups: comp.unix.unixware.misc,comp.protocols.kermit.misc
Subject: Re: kermit setup help
Date: 15 Jul 1997 13:03:50 -0500
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[E-mailed and posted.  comp.protocols.kermit.misc added.]

[e-mail] (Thanh Ma) writes:
)
) I would appreciate if you could save me some time in learning how to
) best configure kermit....
)
) I would like to do file transfer between 2 UnixWare machines with 2 identical
) 33.6 modems using latest kermit release. What is the best setup ? I could
) achieve at most 950 CPS using the below setup on both sides:
)
) set modem type rocketwell-v34
) set window-size 2
) set packet-length 512
) set file type binary
)
) I tried different window sizes and different packet lenghts but the above
) seem to be best (not too good to me) so far.

You probably already have a macro called "fast" that you should
look at...

Two major suggestions:

    Use much bigger packets.
    Disable most or all control prefixing.

If you have a fairly recent version of kermit (must be true
since you can set window size), you can set the packet length
into the thousands.  I believe that you need to set both packet
lengths separately:

    set send packet 9024
    set rece packet 9024

The default for kermit is to send most or all control characters
as two characters.  This is called control prefixing.  It is very
nice for when something between the kermits wants to interpret
some control characters, but it does slow things down.  The simple
way to change this is via either:

    set prefix minimal
or
    set prefix none

You can see the effect of these commands via:

    show control

And you can fine tune them with:

    set control ...

See "help set control" for more information.

If you are sure that nothing in the middle wants X-ON/X-OFF
handshaking, then I bet you can use "set prefix none" in the
configuration you describe.  I bet you can use "set prefix
minimal" in your situation right now.  You can probably even
go as far as:

    set prefix none
    set control prefix 17 19

When testing this you need to make sure you are sending
files with all possible character values.  Otherwise you'll
think it is working fine and later one certain file will
refuse to send.

) And BTW, how to automate the setup, so that I don't have to enter those
) commands everytime I run kermit. (I know, I need to get the C-Kermit book
) one day)

Kermit will read $HOME/.kermrc at start-up and run any commands in
it.
--
Tye McQueen    Nothing is obvious unless you are overlooking something
         http://www.metronet.com/~tye/ (scripts, links, nothing fancy)
       Remove d's from address to reply (sorry for the inconvenience).