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1993-05-26
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26 May 1993
This archive contains a version of THENET2.X1H modified in accordance with
the instructions in the message below. For any information about this which
is not already in the message, please contact G8KBB directly.
-- Mike Bilow, mikebw@ids.net (Internet)
N1BEE @ WA1PHY.#EMA.MA.USA.NA (AX.25)
----------------------------------------------------------------------------
To: eratho@eras70.ericsson.se
From: "Markus Lamminmaki OH6LSA" <MARKUS@TECHNIS.vtyh.fi>
Organization: Vasa Tekniska Yrkesh|gskola
Date: 25 May 93 08:23:10 EET-2EEST
Subject: How to path THNETX1H
Cc: tcp-group@ucsd.edu, kurt@cs.tamo.edu, mikebw@ids.net,
ron@chaos.eng.wayne.edu
X-Pmrqc: 1
Priority: normal
X-Mailer: Pegasus Mail v2.3 (R5).
Message-Id: <3B68563127@technis.vtyh.fi>
Hi folks, there seems to bee a huge need for this patch. I've got a
load of messages requesting me to post the patch. Ok, so here it
comes. Mike, could you put it to ucsd.edu? And OH1MEA I think you are
also reading this so you could put it to nic.funet.fi? Here it goes:
-------clip here----------------------------------------------------
From : G8KBB @ GB7MXM.#36.GBR.EU
The documentation that accompanies TheNet X-1H describes a number
of patches that can be done to increase the MTU sizes for IP use.
In addition, here are two more patches. One is to cure the ARP
digipeat garbage bug, the other is to lower the minimum transport
retries to 1.
1. The Arp garbage bug.
Took ages to find this - in the event it was trivially silly.
The problem is that when an arp request is sent tothe node it
replies with a garbage filled digi list. The patch cures this.
In the file THENET2.X1H, patch the byte at offset 0x77cf from 0x2a to
0x21.
2. The transport retries.
In some networks, transport retries are not wanted, but the node does
not allow the retry counter to be set below 2. This patch allows it
to be set to 1.
In the file THENET2.X1H, patch the byte at offset 0x7933 from 0x02 to
0x01.
An easy way to patch the files is to use debug - but remember to add
0x100 to the addresses. Hence to perform the arp patch, type :
debug thenet2.x1h
e 78cf
21
w
q
Line 1 invokes debug on the file
Line 2 edits the byte at offset 77cf ( it is at address 78cf )
Line 3 changes it to 0x21 - note that it should read 0x2a !
Line 4 writes out the changed file
Line 5 exits from debug.
These patches only apply to thenet-x1h. If you are using x-1g you need
to upgrade first. In addition, if you are using x-1g you will also
find that ip frames sent out as UI frames will have garbage digi
lists. This was fixed in X-1H together with a couple of other bugs.
73's
Dave
G8KBB @ GB7MXM.#36.GBR.EU
---------clip here---------------------------------------------------
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Vasa Polytechnic Email: markus@ygdrasil.vtyh.fi (NeXT Mail)
PB 6, SF-65201, FINLAND markus@technis.vtyh.fi (PMail)
Fax: +358-61-3230 610 OH6LSA@OH6RBV.FIN.EU (Packet)
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Looks great on the outside, but Intel inside.