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PA2AGA > TCPDIG 26.07.96 15:08l 184 Lines 6641 Bytes #-10939 (0) @ EU
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Message-Id: <tcp_96_154>
From: pa2aga
To: tcp_broadcast@pa2aga-1
Subject: TCP-Group Digest 96/154
X-BBS-Msg-Type: B
TCP-Group Digest Thu, 25 Jul 96 Volume 96 : Issue 154
Today's Topics:
I'm outta here!
Regional routing (3 msgs)
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 ftp.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: Wed, 24 Jul 1996 17:05:16 -0400
From: crompton@nadc.nadc.navy.mil (D. Crompton)
Subject: I'm outta here!
As of August 2nd my mail address - crompton@nadc.nadc.navy.mil will
end as will the NT server, crompton.nadc.navy.mil.
I am retiring and the Naval Air Warfare Center is moving to Patuxent
River, MD. Although I will get to retire and do other things (I am not
really retiring from work) it is a sad moment for me and NAWC and a great loss
to the community, unfortunately with tightening budgets these closures
and mergers are inevitable.
Mail will be forwarded for awhile but please start using my new address
which is rather easy to remember - Doug@Crompton.com
Mail can also be sent to wa3dsp@wa3dsp.ampr.org
The Public files now at crompton.nadc.navy.mil will eventually be moved to
the marconi.crompton.com computer. I am burning CD images this week.
My Web page has been moved - it is - http://www.resuba.com/wa3dsp
The Gateway has been moved and is operational. GW sysops see the latest
gateways listings - and update your encaps!
I feel like I am saying goodbye - and in fact I am to many fellow workers
but not to these groups and the TCP/IP community. I will be around!
73 Doug
------------------------------
Date: Wed, 24 Jul 96 11:01:46 EDT
From: n1kio@gw.n1kio.ampr.org (Tom Saluti, Rochester, NH)
Subject: Regional routing
X-When all else fails, Read the Docs !
X-Mailer: PCElm 3.21
Hi all,
I have a subject that I would like to see discussed.
It is about the growing size of encap.txt and how big it is growing.
First of all the problem as I am seeing it. In the 3 months
that I have had gw.n1kio running I have seen many new GWs
come on line and encap.txt grow. As encap.txt grows it is
eating more and more of my memory in this dos based system.
No I don't want to hear 'switch to linux/unix/os/2'. I like
running in dos and many of us don't want to switch.
I am wondering why we havn't started regional 'routers' so that
we don't have to carry the full encap.txt. I just get the feeling
that is would be better if we had a major 'router' that we would
default to, and that router would then route out of our 'local'
region.
Yes I know it would take some work to set up something like this.
But as the ammount of new gateways grows, sooner or latter, most
of us will have to start droping routing off of our systems.
I can see encap.txt growing to over 50 K in the next 2 years.
I have heard that this subject was brought up before and that
it was droped. Well I think that we had better re-think about
this before encap gets out of control.
I can envision a 'regional' encap for say New England having all
the local routing and a default routing for anything out of
New England to one major switch that would carry the full encap.txt.
I would hope that this problem would get some discussion.
Thanks for taking the time to read this.
73 from Tom
IMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMKMMMMMMMMMMMMMMMMMMMMMMM;
LMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMJMMMMMMMMMMMMMMMMMMMMMMM9
: SNAIL MAIL: Tom Saluti 38 Royal Crest :
: Rochester, New Hampshire 03867 :
: AX.25: N1KIO @ WZ1F.#ENH.NH.USA.NOAM :
: AMPRnet: n1kio@gw.n1kio.ampr.org [44.52.1.1] :
: INTERNET: n1kio@gw.n1kio.ampr.org [44.52.1.1] :
HMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM<
------------------------------
Date: Wed, 24 Jul 1996 11:42:41 -0700
From: brian@nothing.UCSD.EDU (Brian Kantor)
Subject: Regional routing
>No I don't want to hear 'switch to linux/unix/os/2'. I like
>running in dos and many of us don't want to switch.
Then you will soon be unable to play in the game.
Our network is outgrowing the capabilities of DOS-based systems.
I regret that I don't know of any way to soften the blow.
If you do not evolve, you will die.
That's the way it's going.
- Brian
------------------------------
Date: Wed, 24 Jul 1996 19:01:17 +0100 (BST)
From: Alan Cox <alan@cymru.net>
Subject: Regional routing
> come on line and encap.txt grow. As encap.txt grows it is
> eating more and more of my memory in this dos based system.
> No I don't want to hear 'switch to linux/unix/os/2'. I like
> running in dos and many of us don't want to switch.
An encap entry can't take much memory, to send something you need to know
about 12 bytes information
Target (4byte)
Netmask (4 byte) - 5 bits if you insist of contiguous masks!
Gateway IP (4 byte)
So its something like 9-12 bytes per record. Even a DOS PC isnt going
to have trouble with 1,000 records. At 5,000 records it still fits
effortlessly into 64K (eg into EMS memory blocks).
Even if we allow another 8 bytes for easier searching of addresses and 8
bytes for an MD5 secret thats 32 bytes record or less, which is still 2,000
encap hosts for an EMS bank
Is there a real technical problem here or just one of either using a bigger
box or clean code. Is the KA9Q code for encap efficient on memory anyway ?
Alan
------------------------------
End of TCP-Group Digest V96 #154
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