mindel@netwrx1.UUCP (Joshua L Mindel) (02/07/90)
Does anyone have experience with a Sun 3 running the following software suite
to communicate on the MILNET (or another PDN):
SunOS 4.0.3
ISODE FTAM and/or FTAM/FTP Gateway 6.0
SunLink X.25 6.0
SunLink OSI 6.0 ?
If yes, I'd like to talk with you about it.
We have two Sun 3s, each attached to the MILNET via 9600 bps X.25 (LAPB) links
to the PSN, running the above software suite.
We are having reliability problems. Occasionally, our FTAM session
is aborting after completion of a get or put. The file transfer seems to
complete, the ftam message stating the number of bytes transferred and the
transfer rate appears, and then after a long delay, ISODE returns with a
message stating that the session was aborted for a "Reason not specified
at Transport Level".
Though on the surface this appears to be an X.25 problem, file transfers
using Sun's mapcp (simplified FTAM program) seem to be very reliable. The
only pattern that seems to appear is that when it fails, it fails when
when attempting to close out a get or put.
If anyone has had similar experience or (best of all) has a solution, please
contact me.
Following is a list of pertinent X.25 configuration parameters that will
further define our environment:
Retransmission timer 4500 msec
Max delay before ACK 2000 msec
Max idle link timer 18000 msec
Max Frame Size 134 bytes
Max Retries 10
Window Size 7
Default packet size 128
Timeout after sending RESET REQUEST 180 sec
Timeout after sending CALL REQUEST 200 sec
Timeout after sending RESTART REQUEST 180 sec
Timeout after sending CLEAR REQUEST 180 sec
Thanks in advance for any insight you can offer.
Joshua L Mindel
Senior Analyst
Networks One
Usenet: uunet!netwrx1!mindel
Internet: mindel%netwrx1@uunet.uu.net
From mindel Mon Feb 5 02:33 EST 1990
>From mindel Mon Feb 5 02:33:49 1990
Received: by netwrx1 (4.12/2.4S)
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Subject: ISODE 6.0, SunLink X.25,OSI 6.0, and MILNET
To: comp.protocols.iso.dev-environ
Date: Mon, 5 Feb 90 2:33:47 EST
Cc: graham (Jim Graham), slaski (Robert Slaski), mindel (Joshua L Mindel),
lavender (Greg Lavender)
X-Mailer: ELM [version 2.2 PL10]
Status: RO
Does anyone have experience with a Sun 3 running the following software suite
to communicate on the MILNET (or another PDN):
SunOS 4.0.3
ISODE FTAM and/or FTAM/FTP Gateway 6.0
SunLink X.25 6.0
SunLink OSI 6.0 ?
If yes, I'd like to talk with you about it.
We have two Sun 3s, each attached to the MILNET via 9600 bps X.25 (LAPB) links
to the PSN, running the above software suite.
We are having reliability problems. About 25% of the time, our FTAM session
is aborting after completion of a get or put. The file transfer seems to
complete, the ftam message stating the number of bytes transferred and the
transfer rate appears, and then after a long delay, ISODE returns with a
message stating that the session was aborted for a "Reason not specified
at Transport Level".
Though on the surface this appears to be an X.25 problem, file transfers
using Sun's mapcp (simplified FTAM program) seem to be very reliable. The
only pattern that seems to appear is that when it fails, it fails when
when attempting to close out a get or put.
If anyone has had similar experience or (best of all) has a solution, please
contact me.
Following is a list of pertinent X.25 configuration parameters that will
further define our environment:
Retransmission timer 4500 msec
Max delay before ACK 2000 msec
Max idle link timer 18000 msec
Max Frame Size 134 bytes
Max Retries 10
Window Size 7
Default packet size 128
Timeout after sending RESET REQUEST 180 sec
Timeout after sending CALL REQUEST 200 sec
Timeout after sending RESTART REQUEST 180 sec
Timeout after sending CLEAR REQUEST 180 sec
Thanks in advance for any insight you can offer.
Joshua L Mindel
Senior Analyst
Networks One
Usenet: uunet!netwrx1!mindel
Internet: mindel%netwrx1@uunet.uu.net