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PA2AGA > TCPDIG 09.07.96 07:10l 118 Lines 4109 Bytes #-10957 (0) @ EU
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Subj: TCP-Group Digest 96/143
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Date: Mon, 08 Jul 96 09:45:01 MET
Message-Id: <tcp_96_143>
From: pa2aga
To: tcp_broadcast@pa2aga-10
Subject: TCP-Group Digest 96/143
X-BBS-Msg-Type: B
TCP-Group Digest Sat, 6 Jul 96 Volume 96 : Issue 143
Today's Topics:
help for TNC
new Z8530 driver version
PPP and Livingston Portmaster
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: Fri, 05 Jul 1996 23:01:15 +0900
From: Lu Hui-Hua <gzluhuih@public1.guangzhou.gd.cn>
Subject: help for TNC
hello everybody, here is BD7IX(Lu Hui-Hua) from P.R.CHINA.
somedays ago, i send a mail at here , said want to know how
to made a modem(tnc) myself, my plan is use TCM3105 or
AM7910(7911) chip to do it, but unfortunate, the chip is
not produce. soi think maybe motorola's MC145442 OR MC145443
can replace it. but mc145442(3) only can use 300 baud
(CCITT V.21 OR BELL 103).
who can tell me the alternative else?
and if i use MC145442(3), who can give the circuit design about it?
please tell me via e-mail bd7ix@amsat.org
thanks
Lu Hui-Hua*bd7ix*
------------------------------
Date: Thu, 4 Jul 1996 22:48:36 +0100 (BST)
From: alan@lxorguk.ukuu.org.uk (Alan Cox)
Subject: new Z8530 driver version
> (*) New features (among others):
> - several bugfixes
Is it practical to extract just the bugfixes to merge into the standard kernel
?
Alan
------------------------------
Date: Fri, 5 Jul 1996 06:11:43 -0700
From: brian@nothing.UCSD.EDU (Brian Kantor)
Subject: PPP and Livingston Portmaster
I can't speak to this specific problem, but it sounds much like a
routing problem, rather than something at the lower levels like PPP.
If the far end of the PPP link is pingable from the near end, then the
link and PPP are working fine. When connectivity to the outside world
disappears, it would be instructive to examine the routing tables on
the terminal server AND the routing tables on the router it is attached
to.
We have seen a problem where the network connecting our terminal
servers to our Cisco router has gotten so busy that collisions ate the
RIP broadcasts. Since these broadcasts are how the terminal servers
announce to the router that a particular remote host is reachable,
connectivity would go away for varying periods of time until the next
RIP broadcast managed to get through.
Whilst it's not likely that this is the cause of the particular problem,
it could well be that a similar result is occuring. RIP configurations
can occasionally conflict, leading to problems where routes come and go
- sometimes periodically, sometimes seemingly randomly.
I think it would be worth checking out if there's some way for you to
query the terminal server's routing table.
- Brian
------------------------------
End of TCP-Group Digest V96 #143
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