HP X.25/9000 User's Guide HP-UX 11i v3 (5900-1523, August 2011)

Figure 30 Flowchart 3 – Hardware check
Flowchart 4 – Procedures and notes
This flowchart describes how to run a loopback test using x25check on the local node. This checks
that your X.25 link to the network or X.25 switch is working correctly.
Note 4-1 – X25check
You do a loopback test using the x25server and x25check commands. The x25server process
is only used to accept and echo back an X.25 packet coming from an x25check process. To run
the loopback test, you need:
• 2 virtual circuits (either 1 one-way inbound and 1 one-way outbound, or 2 two-way).
• if you are connected to a private X.25 switch (rather than connected directly to a network),
then the switch must be configured to return a call packet.
Note 4-2 – Exit
Your local X.25 configuration is correct. You can use x25check to verify connections to the remote
host only if the remote host is running and:
• has X.25 initialized.
• is running x25server.
• has an X.25 configuration that is compatible with the local host’s configuration.
If you still experience problems, contact the System Administrator at the remote host and ask them
to check their X.25 configuration.
Troubleshooting your X.25 link 133