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1994-11-13
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Date: Mon, 31 Oct 94 04:30:02 PST
From: Advanced Amateur Radio Networking Group <tcp-group@ucsd.edu>
Errors-To: TCP-Group-Errors@UCSD.Edu
Reply-To: TCP-Group@UCSD.Edu
Precedence: List
Subject: TCP-Group Digest V94 #244
To: tcp-group-digest
TCP-Group Digest Mon, 31 Oct 94 Volume 94 : Issue 244
Today's Topics:
Help with a Ripper Problem
If they're gonna sell fre...
Ooops!
Send Replies or notes for publication to: <TCP-Group@UCSD.Edu>.
Subscription requests to <TCP-Group-REQUEST@UCSD.Edu>.
Problems you can't solve otherwise to brian@ucsd.edu.
Archives of past issues of the TCP-Group Digest are available
(by FTP only) from UCSD.Edu in directory "mailarchives".
We trust that readers are intelligent enough to realize that all text
herein consists of personal comments and does not represent the official
policies or positions of any party. Your mileage may vary. So there.
----------------------------------------------------------------------
Date: Mon, 31 Oct 94 05:00:28 UTC
From: Andy@vk4kiv.qut.edu.au (Andy Joyce)
Subject: Help with a Ripper Problem
Hi, this is not really part of the AMPRNet domain but I will put it up in
the air anyway.
Im on a project team at my work that is looking into ways of data networking
in/out of common teching areas within the University. Like most Universitys
this is a Class-B domain with many Class-C SubNets, all linked via Wellfleet
routers. Now the problem...
A user may want to use his/her own equipment in whatever teaching area within
the University, this equipment may be DOS/Windows, Unix, Sun, Mac, etc etc,
but there system config would most likly be a default IP route to there SubNet
router. So if they take this equipment to another part of the University and
just plug it in to any port then nothing would happen unless they change there
system config with an address for that SubNet. Together with this, some staff
now require direct Internet access and/or University systems access within any
teaching area. Again this is a major problem of network security if a port has
its own address etc, and that users may change teaching areas at any time.
We have been looking at BOOTP and RIP-1/2, but BOOTP will need the user to
have a bootp client for there software/hardware and could be a major limit for
users. RIP-2 was starting to look good but none of the Wellfleet routers had
that version. The idea with RIP is that a central box could be used for this
and that a users address could be added to the routing table of this box with
RIP broadcasting to a set Wellfleet router interface and update the Wellfleet
routes table, the that node would use OSPF route info to there other routers
within the University. At the end of booking time for this teaching area, that
route would then be dropped.
The problem now is that as a route is received by the router, it will apply
its local interface SubNet mask to the RIP entries before putting it in the
table. What would happen is that there would be two entries for the same
SubNet, and this could lead to the old one being removed if the hop count
to the new SubNet is less than the true entry.
Does anyone know of a way around this apart from DHCP etc, Im looking for
something simple for the routing of single addresses.
Cheers,
Andy Joyce VK4KIV..
-
_--_|\ Andy Joyce
/ QUT Dept of Audiovisual Services Email1: A.Joyce@qut.edu.au
\_.--._/ Division of Information Services Email2: Andy@vk4kiv.qut.edu.au
v Queensland University of Technology Ph/Fax: +61 7 864 4298/4000
------------------------------
Date: Sun, 30 Oct 1994 10:21:58 -0500
From: KE4JUH@aol.com
Subject: If they're gonna sell fre...
If there were anything worth watching on TV I'd give a sh?t. Let them put
all the TV stations on VHF then, since there is a problem with Cramming them
all on UHF...That would allow for 12 TV stations in any given area (I realize
it's not really that simple, but there are really only 4 or 5 major networks
nationwide)... and in a couple of years everyone will have a satellite TV
system, the cost is dropping like...
So I suggest renting out (NOT SELLING, more money can be made that way) the
spectrum used by UHF TV. And by renting it out the FCC can create a steady
income and maybe even hire the staff they need to enforce the rules + regs...
I don't have much interest in SHF + EHF now, but I didn't have much interest
in HF before I tried it! I WOULD LIKE TO GET THE CHANCE TO TRY IT, THANK
YOU!
DE KE4JUH
------------------------------
Date: Sun, 30 Oct 1994 23:23:41 +0000
From: "Brian A. Lantz" <brian@lantz.com>
Subject: Ooops!
Well, Tampa SHOULD be okay now.....
Accidently deleted the autoexec.nos file about a week ago, and I THOUGHT
I had it all setup right again, but only CLOSE.
Should be able to get into ko4ks.ampr.org, again
-----------------------------------------------------------
Brian A. Lantz/KO4KS brian@lantz.com
REAL PORTION of Microsoft Windows code:
while (memory_available) {
eat_major_portion_of_memory (no_real_reason);
if (feel_like_it)
make_user_THINK (this_is_an_OS);
gates_bank_balance++;
}
------------------------------
End of TCP-Group Digest V94 #244
******************************