Re: [WinMac] Mac DHCP client <-> NT DHCP Server follow-up


bartosh@apple.tamu.edu
Sat, 24 Apr 1999 13:17:01 -0500


WinMac Digest #293 - Saturday, April 24, 1999

  Mac DHCP client <-> NT DHCP Server follow-up
          by "Daniel L. Schwartz" <expresso@snip.net>
  PC users remote access to FileMaker server on G3
          by "Jason Sellers" <JasonDS@extremezone.com>
  Re: [WinMac] CopyPaste problems
          by "Simon" <simon@stonebow.otago.ac.nz>
  Re: [WinMac] CopyPaste problems.
          by "John W. McCarthy" <jwmcmac@flash.net>
  Re: CopyPaste problems
          by "Jonathan Mao" <noj@tcp.net.au>
  Re: [WinMac] Mac DHCP client <-> NT DHCP Server follow-up
          by <bartosh@apple.tamu.edu>

Subject: Mac DHCP client <-> NT DHCP Server follow-up
From: "Daniel L. Schwartz" <expresso@snip.net>
Date: Fri, 23 Apr 1999 23:58:44 -0500
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii" ; format="flowed"

        So, according to Mr. Droms, it *was* Apple screwing up on
this important issue, after all, by having the client starting in
INIT-REBOOT state *after* sending a DHCPRELEASE message upon previous
Mac shutdown.

        Thanks are due to Mr. Droms and Ric Ford for bringing this
problem to a close.

        Dan Schwartz

>>>>
>DHCP Standards
>Date: Sun, 18 Apr 1999 21:39:11 -0400
>To: notes@macintouch.com
>From: Ralph Droms (droms@bucknell.edu)
>Subject: DHCP problems with MacOS 8.5 and OT 2.02
>
>
>I'm writing in response to what appears to be considerable confusion
>about DHCP, OT 2.02 and various servers. I'm chair of the Dynamic
>Host Configuration working group (DHC WG) of the IETF and author of
>the DHCP specs. Here are some notes about the DHCP mail you posted
>recently.
>
>
>- Ralph Droms
> Chair, IETF DHC working group
> Computer Science Department
> Bucknell University
>
>
>
>
>* According to RFC 2131, when a DHCP client restarts, it is either
>in INIT state or INIT-REBOOT state. If the client doesn't have an IP
>address, it starts in INIT state and broadcasts a DHCPDISCOVER
>message to find a server willing to assign an address to the client.
>If the client has an IP address with an unexpired lease, it starts
>in INIT-REBOOT state and the client broadcasts a DHCPREQUEST message
>to confirm that its address is still valid.
>
>* There is another aspect to the behavior of the OT 2.02 client that
>has only recently been documented (Internet Draft
>draft-ietf-dhc-ipv4-autoconfig-04.txt). If the OT client receives no
>response to a DHCPDISCOVER message in INIT state, the client will
>select an address from the 169.254.0.0 subnet, which has been
>registered with IANA as the LINKLOCAL subnet. Recent Windows DHCP
>clients also use this autoconfiguration mechanism.
>
>* There was some not quite correct information about DHCP clients in
>one of the [reader notes]. A DHCP client always tries to contact a
>server when it restarts, whether or not it has an address with an
>unexpired lease, as described above. If a client in INIT-REBOOT
>state receives no response to its DHCPREQUEST messages, it assumes
>that its address is OK and continues to use its old address. Sending
>a DHCPRELEASE message is optional on the part of the client. If the
>client will not reuse the address again (i.e., the client is moving
>to a new network segment) or is willing to obtain a new address when
>it restarts, it may issue a DHCPREQUEST and restart in INIT state;
>otherwise, the client may remain silent at shutdown and restart in
>INIT-REBOOT state.
>
>* Based on RFC 2131, the behavior of OT 2.02, in which it restarts
>in INIT-REBOOT state after issuing a DHCPRELEASE at the previous
>shutdown, is incorrect. I've been in communication with the DHCP
>team at Apple; they understand that this behavior is incorrect and
>they plan to correct it.
>
>* When starting (incorrectly) in INIT-REBOOT state, after receiving
>no server response, the OT 2.02 Macs are following RFC 2131 and
>using their previous address. I'm a little surprised that the
>servers in question don't respond to the DHCPREQUEST for a released
>address with a DHCPNAK message. I'm also a little surprised that
>these Macs then revert to INIT state at the next use of OT; perhaps
>the lease on the reused address has timed out and the Mac was unable
>to extend the lease?
>
>
>
>[Follow-up]
>
>Date: Mon, 19 Apr 1999 08:32:23 -0400
>To: Ric Ford
>From: Ralph Droms
>
>
>There is an IETF page for the DHC WG,
>http://www.ietf.org/html.charters/dhc-charter.html and I run a
>DHCP-related site at http://www.dhcp.org
>
>- Ralph
>
>
>
>Rainoff Summary
>Date: Tue, 20 Apr 1999 16:21:17 -0400
>From: Adam Rainoff
>To: notes@macintouch.com
>Subject: DHCP and 8.5.1 comments
>
>
>Editor: I noticed much technical info posted. However, for the
>nontechnical, let me suggest the following post.
>
>Regarding the DHCP Issue & Mac OS 8.5.1
>
>The Bad news:www.P Issue & Mac OS 8.5.1
>
>Mac 0S 8.5.1 has a problem maintaining DHCP connections. This is the
>reason your ADSL or other DHCP service "drops". It's really not the
>provider's fault at all.
>
>The Good news:www.t all.
>
>Mac OS 8.6 fixes this problem, not only with ADSL, but with ALL DHCP
>services. The 8.6 update is scheduled for release sometime soon.
>
>Workaround:
>
>Reset your IP address by
>
>1) Open the TCP/IP control panel
>2) Change to "Using BootP Server"
>3) Close & Save
>4) Open the TCP/IP control panel
>5) Change to "Using DHCP Server"
>6) Close & Save
>
>
>Repeat if necessary. This will reset the IP and get you back online.
>
>
<<<<

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Subject: PC users remote access to FileMaker server on G3
From: Jason Sellers <JasonDS@extremezone.com>
Date: Fri, 23 Apr 1999 23:58:50 -0500
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii" ; format="flowed"

Does anyone know a simple solution to give PC users remote access to a
FileMaker server running on a G3? A client is using ARA for his Mac users
to dial up to access the network that the FileMaker server is on. But it's
a Mac only shop - there are NO PCs in the building.

Any thoughts or ideas are greatly appreciated!
Jason Sellers

Subject: Re: [WinMac] CopyPaste problems
From: Simon <simon@stonebow.otago.ac.nz>
Date: Sat, 24 Apr 1999 08:55:19 -0500
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii" ; format="flowed"

>Brian Durant wrote:
>>
>> Hi,
>>
>> I tried the new version of CopyPaste recently. Now, Launcher does not work
>> (-192 error) and my ADB port freezes off and on. The authors claim that
>> there are no known incompatibilities, but I am absolutely sure the CopyPaste
>> is the problem. I have dumped CopyPaste, but still have the above symptoms.
>> Help anyone?
>

The -192 error with the Launcher is a known problem - there is a tech
note about it.

Install a new copy of the Launcher then Lock the file using Get Info
- this will stop it damaging itself.

Subject: Re: [WinMac] CopyPaste problems.
From: "John W. McCarthy" <jwmcmac@flash.net>
Date: Sat, 24 Apr 1999 08:55:42 -0500
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii" ; format="flowed"

Brian,

I hope the following suggestions will be of some help.

I will reply in-line . . . sort of.

Kelly McCarthy

>
> Brian Durant wrote:
> >
> > Hi,
> >
> > I tried the new version of CopyPaste recently. Now, Launcher does not work
> > (-192 error) and my ADB port freezes off and on. The authors claim that
> > there are no known incompatibilities, but I am absolutely sure
>the CopyPaste
> > is the problem. I have dumped CopyPaste, but still have the above symptoms.
> > Help anyone?

Main reply:

All of Tom's suggestions are great. The order in which they are done
can shorten
the repair.

You could probably trash the finder preferences as a first thing to try.

Then ZAP the PRAM -- using TechTool 1.1.8 or later (the free version).

-192 resNotFound Resource not found . . . Rebuild the Desktop --
using TechTool
1.1.8 or later (the free version). Often, when the Finder cannot
find resources,
rebuilding the Desktop will enable the Mac to find them

I don't use Launcher anymore, although it can be very useful. There
are so many
great 3rd party ways of getting around the Mac environment. I use
several of them.

I have found that earlier versions of AIM (AOL Instant Messenger's)
menu extension
can conflict with versions of CopyPaste before 4.2.2. The two did
not seem to be
compatible until I . . .

Upgraded to the latest versions of each. This seemed to eliminate the problem.

I believe the unregistered version of CopyPaste works in 68k mode which can
function slightly poorly on the original 75 mhz 603 performas --
worse on my Dad's
6220 CD performa than on my upgraded performa 630 w/601 66 mhz PPC
running 8.5.1
(soon to be 8.6 I hope).

For the future:

This is similar to the way Tom does it, but may be little quicker.
When I get a
system set up and working I save a pristine copy of the finder file
and the system
file (and maybe the preferences) as a stuffit archive.sit -- just
those files, not
the system folder, and no others. I must do this as I am always
experimenting with
all the different shareware that comes out, and especially since I am
using an OS
that is not supposed to work on my upgraded Performa 630 (it is the
most stable OS
I've ever used on this Performa -- go figure that you have to use a trick to
install it).

Having the pristine copy of the Finder and System files and trashing the finder
prefs, etc. . . usually saves me from taking the time for an install. I almost
never have to do that.

Norton Utilities 4.0 is great (Norton Disk Doctor and Speed Disk are
about all I
use, although Crash Guard has been helpful on occasion -- makes
Scantastic work for
me on Dad's machine). Personally, I don't use Norton DD while
Virtual Memory is on
(if I can remember to turn it off). Occasionally had trouble with Norton and I
think the Virtual Memory was the culprit. But have never had trouble
from Norton
Disk Doctor with the VM off.

A couple of corrupt files on the Mac lately: an old version of World Clock was
corrupted (System Folder:Control strip folder); and my sound preferences were
corrupted (System Folder:Preferences:Sound Preferences).

Last, but not least, when you install an application/extension and
right away have
trouble, it could be that you installed it without turning all or most of your
extensions and Control panels off (especially Virus and Communication
related) --
by starting from another floppy, CD (hold down C key during startup),
or by holding
down the shift key during startup.

Whenever failing to follow this guideline (extensions off), I have
had great luck
with second installs (after repairing the OS) installing with everything turned
off.

After a repair session following a bad install, I usually remember to install
things the correct way for a while after.

Oh! Forgot to mention "Conflict Catcher 8" . . . get it. It finds
conflicts in
your startup files and perhaps best of all, it allows you to easily
re-arrange the
startup order on many of your extensions and control panels. This alone can
eliminate some conflicts.

God Bless us all.

Kelly

Tom Roth replied:

>
> My usual procedure would be to first delete the desktop database file
> using TechTool. If that doesn't work then a PRAM Zap (also using
> TechTool). Run Apple's Drive Setup (1.7.2) and select Update Driver.
> Finally there's Norton Disk Doctor to run too.
>
> Still having problems? Reinstall the OS by booting off the OS CD and
> trashing the System Suitcase and Finder from the hard disk's System
> Folder. This will make for a semi-clean reinstall of the OS. A
> complete clean install would be a whole new system folder but that's a
> lot of work.
>

Subject: Re: CopyPaste problems
From: Jonathan Mao <noj@tcp.net.au>
Date: Sat, 24 Apr 1999 08:55:50 -0500
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii" ; format="flowed"

Hi,

Launcher stores it's position (where it is on screen) in the control
panel itself. This can be easily corrupted.
To get rid of the -192 error, re-install a fresh copy of Launcher by
doing a custom install from the Mac OS CDROM. There's a technote on
Apple's web site to this effect but I don't have the exact URL handy.

Not sure about the ADB port problem though. Hopefully a PRAM zap will
fix it. Or, as Tom said, a TechTool Pro run over your hard disk.

Hope this helps,

>I tried the new version of CopyPaste recently. Now, Launcher does not work
>(-192 error) and my ADB port freezes off and on. The authors claim that
>there are no known incompatibilities, but I am absolutely sure the CopyPaste
>is the problem. I have dumped CopyPaste, but still have the above symptoms.
>Help anyone?

Jonno

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Subject: Re: [WinMac] Mac DHCP client <-> NT DHCP Server follow-up
From: <bartosh@apple.tamu.edu>
Date: Sat, 24 Apr 1999 13:17:01 -0500
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii" ; format="flowed"

If it was apple's fault, DHCP would not work properly with Solaris, Linix,
etc- which it does.

-mab

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