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04-16-2002 03:33 AM
04-16-2002 03:33 AM
FTP Problem ?? Wierd
"Access Restrictions??"
"Large File timeout ????"
"inetd.sec??"
Ideas but not checked as yet.
Connected to 172.24.76.13.
220 inl032 FTP server (Version 1.1.214.8 Fri Apr 20 07:27:42 GMT 2001) ready.
Remote system type is UNIX.
Using binary mode to transfer files.
331 Password required for wm7260.
230 User wm7260 logged in. Access restrictions apply.
200 Type set to I.
250 CWD command successful.
200 PORT command successful.
150 Opening ASCII mode data connection for /usr/bin/ls.
total 0
226 Transfer complete.
Local directory now /app/as400/news/referentiel/traites_gfs/20020416_041001
421 Service not available, remote server has closed connection
Not connected.
421 Service not available, remote server has closed connection
Not connected.
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04-16-2002 03:56 AM
04-16-2002 03:56 AM
Re: FTP Problem ?? Wierd
Some questions:
is it the same for root too?
Check dir permissions,
check shell,
Did it work at some time?
cu, Emiel
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04-16-2002 06:56 AM
04-16-2002 06:56 AM
Re: FTP Problem ?? Wierd
If network HW/media problems can be definitively ruled out then I would suspect that some TCP tuning may be in order. in /etc/rc.config.d/nddconf
Check tcp_keepalive_interval
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x692bcbaac6dcd5118ff40090279cd0f9,00.html
Also via lanadmin/ndd check the MTU size & pmtu strategy
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x58a0d5fab40ed6118ff40090279cd0f9,00.html
Here's some other good threads on this subject
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x08621012aa92d5118ff10090279cd0f9,00.html
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x3e745220af9bd5118ff10090279cd0f9,00.html
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xcaa279bffde7d4118fef0090279cd0f9,00.html
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xe1b14e49c5cdd5118ff40090279cd0f9,00.html
HTH,
Jeff
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04-16-2002 07:13 AM
04-16-2002 07:13 AM
Re: FTP Problem ?? Wierd
not check the Directory permissions. Yes it did work, but not last night. I have just found out that this has happened 5 time last month.
I only have access to the destination server.
So trying to identify this message is now becoming a "No Go". Unless you have any more idea's.
I cannot be sure that it is an itermitant network problem.
I would just like to prove it.
Jeff does your Techy tips still stand for the Destination Server of the of the FTP process
Cheers
Rich
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04-16-2002 07:26 AM
04-16-2002 07:26 AM
Re: FTP Problem ?? Wierd
The server "remote" to the logging server is closing the connection.
Now this may be because:
A) it not waiting long enough for acks to packets rec'd - in that case IT needs the keepalive adjusted or possibly it's TCP window size increased
B) The ack never reaches it - network problem.
And I would definitely verify that the hosts involved have = MTU sizes as well the next-hop routers for each.
Another possibilty to be checked is the network activity in France as this is a popular time (04:00) for backups & the network may be choking over there & "losing" your ack packets.
In my experience almost all "remote connection closed" are due to a network problem - either physical, performance or host/net config.
Rgds,
Jeff
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04-16-2002 08:53 AM
04-16-2002 08:53 AM
Re: FTP Problem ?? Wierd
MTU Set to 1500, but KEEP_ALIVE is not set in the /etc/rc.config.d/nddconf all there is, is a completely commented file?? maybe this needs to be configured as it maybe picking up the default settings what every they may be.
I find out about the network traffic from France.
Cheers
Rich
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04-16-2002 08:57 AM
04-16-2002 08:57 AM
Re: FTP Problem ?? Wierd
Jeff