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PA2AGA > TCPDIG 18.11.96 12:37l 122 Lines 4622 Bytes #-10818 (0) @ EU
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Subj: TCP-Group Digest 96/245A
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Message-Id: <tcp_96_245A>
From: pa2aga
To: tcp_broadcast@pa2aga-1
Subject: TCP-Group Digest 96/245A
X-BBS-Msg-Type: B
TCP-Group Digest Sun, 17 Nov 96 Volume 96 : Issue 245
Today's Topics:
Broadcast TCP/IP packet (fwd)
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----------------------------------------------------------------------
Date: Sat, 16 Nov 1996 13:29:33 +0000 (GMT)
From: Giles Warham <giles@g7tgr.demon.co.uk>
Subject: Broadcast TCP/IP packet (fwd)
I have sent this to the group because the return address of the sender=20
was invalid. My appologies if this isnt really the rite place to post this=
..
73, Giles.
---------- Forwarded message ----------
Date: Sat, 16 Nov 1996 13:03:30 +0000 (GMT)
From: Giles Warham <giles@g7tgr.demon.co.uk>
To: wa7nwp@wa7nwp.ampr.org.demon.co.uk
Subject: Re: Broadcast TCP/IP packet
On Tue, 12 Nov 1996 wa7nwp@wa7nwp.ampr.org.demon.co.uk wrote:
>=20
> Is there any existing protocol/RFC detailing how an IP
> packet (DG or VC) would be sent to a destination yet be read,
> logged, displayed or acted on somehow by all IP systems hearing
> it on the way?
>=20
This is what Linux calls 'IP Multicasting'. There is also a routing
protocol for this 'mode'. It is intended for internet broadcasts of live
video and audio for anyone to listen to - the protocol doesnt include any
sort of acknowledgements etc. Frames are numbered so that the receiver
will respond to them in the correct order (i think). Frame numbering also
allows the receiver to recover from lost frames etc. I have attached all
the info I have on it below (sorry, its not very much info).=20
PS - Where can I ask the question (not newsgroups as I dont yet know how
to receive them - but mail groups are fine):
* Where can I get a 'termcap' and a 'terminfo' file for my DEC VT340 *
* terminal with colour support? I am running Linux operating system. *
* - I have tried DEC's own site, but can only find VT525 termcaps, *
* and they dont seem to support colour mode. If I knew the escape *
* sequences I could make my own (they arnt ansi ^[[36;41m etc *
* unfortunatly) :-( ... *
73 de Giles (G7TGR)
Have fun!
[ 44.131.9.109] g7tgr.ampr.org - Ampr-Net Site
[ 44.131.9.136] linux.g7tgr.ampr.org - On-Line Apps, Web, Ftp etc
[ 44.131.9.139] dos.g7tgr.ampr.org - Experimental Mobile Site
[194.222.70.74] g7tgr.demon.co.uk - Internet
Cuttings of info about Multicasting:
=DA=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=
=C4=C4=C4=C4 IP: multicasting =C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=
=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=C4=BF
=B3 This is code for addressing several networked computers at once, =
=B3
=B3 enlarging your kernel by about 2 kB. If you are using gated, the =
=B3
=B3 daemon that updates your computer's routing tables, you will need to =
=B3
=B3 have this option compiled in. You also need multicasting if you =
=B3
=B3 intend to participate in the MBONE, a high bandwidth network on top =
=B3
=B3 of the internet which carries audio and video broadcasts. More =
=B3
=B3 information about the MBONE is on the WWW at =
=B3
=B3 http://www.best.com/~prince/techinfo/mbone.html (to browse the WWW, =
=B3
=B3 you need to have access to a machine on the Internet that has one of =
=B3
=B3 the programs lynx, netscape or Mosaic). Information about the =
=B3
=B3 multicast capabilities of the various network cards is contained in =
To be continued in digest: tcp_96_245B
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