Installing and Managing HP ARPA File Transfer Protocol Network Manager's Guide (36957-90157)

Chapter 4 63
Managing FTP
FTP Architecture
FTP Architecture
This section describes the FTP architecture and the overall network
architecture for a system that includes FTP.
Figure 4-1 shows the FTP client-server model. The FTP commands and
replies are the messages and errors you can receive as described in
Appendix A, “Error Messages.”
Over the data connection, files and directory information are
transferred. Data is transferred in a defined format. Once the data has
been received, it is converted to the file system supported by the
receiving system.
Figure 4-1 FTP Client-Server Model
Figure 4-2 shows the network architecture for an installation including
FTP over TCP/IP Ethernet/802.3 LAN and an X.25 wide area network.
The MPE/iX FTP implementation consists of the FTP monitor process
which returns errors in the jobstream output (see Appendix A, “Error
Messages,” for possible errors returned).
To troubleshoot network problems, you can refer to Figure 4-2 to
determine logging and tracing required. See the NETCONTROL command
in the NS 3000/iX Operations and Maintenance Manual for
information on starting, stopping, status, and tracing the lower level
protocols and NIs.