Obtain an FTP server trace with options BAS, TIM, and FLO. If this is a high-volume system, be sure to reference the section on "Packet Trace Parameters" on how to filter tracing based on IP addresses and ports.Ģ. Detailed instructions for doing this can be found in the Technote How to Collect PKTTRACE and CTRACE on z/OS. Before retrying the failing data transfer, start the packet trace facility. Steps for resolving FTP timeouts during data transfer for the server :ġ. ![]() If you have a checkpoint firewall, make sure you have turned off the FTP enforce new line setting.ģ.2 Change (comment out) the following line: Make sure your FTP KEEPALIVE option has a value of 60 seconds or greater.ģ. If you need assistance identifying which FTP.DATA the FTP server is using, the hierarchical search order can be found in the topic called TCP/IP configuration data sets in the IP Configuration Reference manual.Ģ. Be sure the following z/OS FTP server timer default values are set to these defaults or higher in the FTP.DATA configuration file. ![]() Although we cannot anticipate what those messages might be, they will most likely indicate a connection has been reset, a connection was interrupted or timed out, or that the server is not responding.ġ. In most cases, this problem will be reported through messages in the FTP client. FTP timeouts can occur during data transfer for the z/OS FTP server.
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