additional systems to your network, you also need to verify their TCP/IP connection. The examples in the following paragraphs show you how to verify a remote TCP/IP connection.
Use the system menus or the Verify TCP/IP Connection (VFYTCPCNN or PING) command to verify your system’s ability to communicate with a remote system using TCP/IP.
Note: PING uses the Internet Control Message Protocol (ICMP) to send data to a host’s Internet address and waits for a response. The user command to perform this verification is called PING (Packet InterNet Groper) on
To verify TCP/IP connections, perform the three steps below in the order in which they are listed:
1.Type VFYTCPCNN and then press F4.
The display for the VFYTCPCNN command appears (Figure 20).
2.Type the name of a remote system as defined in your host table or as defined by your domain name server.
If you prefer to use an Internet address, type the address enclosed in apostrophes. You can also type *INTNETADR to be prompted for the Internet address.
3.Press F10 to view or change the additional parameters.
As you can see in Figure 21 on page 29, the system defaults are to send five packets of 256 bytes each and to wait 1 second for a response on each packet.
Verify TCP/IP Connection (VFYTCPCNN)
Type choices, press Enter.
Remote system . . . . . . . . . ____________________________________________
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Figure 20. Verify TCP/IP Connection
28OS/400 TCP/IP Configuration and Reference V5R1
