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Cause List A
1. Is there is a long delay between connecting to the AS/400 FTP server and
receiving a prompt for a user id? If so, check the configuration of the domain
name server on your AS/400. The FTP server performs a DNS query as soon
as a new connection is received. DNS problems may cause the server to hang
for several minutes before a response is received.
2. Check to see if an exit program has been added to the FTP Server Logon Exit
Point. If yes, then check if the logon that is unsuccessful is allowed by the exit
program.
3. Check to see if the remote logon requires a password if a password was
requested. Some systems request a password, but the connection can fail
because it is not required.
4. Set up a password on the remote system if required. You may have to IPL if you
change the security information on the system.
5. Check your user ID and password by attempting to sign on to your remote
system. If you are unable to do so, contact the system owner to verify that your
user ID and password are correct.
Cause List B
1. Make sure binary mode is in effect if you are transferring binary files.
2. Check to be sure the mapping tables on both the client and server systems are
compatible. You need only do this if you are using your own mapping tables.
3. Check to see that the correct CCSID has been specified for the transfer. If not,
use the TYPE or LTYPE subcommand to set the correct CCSID value before
the transfer is performed.
Figure 255. FTP Problem Analysis
Chapter 21. TCP/IP Problem Analysis 451
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