Troubleshooting
Diagnostic Flowcharts
Chapter 4
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• If the process is not successful, try to establish an ftp link to a remote host. Unlike
telnet, ftp does not use a pseudoterminal (pty) driver on your system. This will
determine if pty is why telnet failed. If ftp is successful, call your HP representative
to determine why you have a problem with pty.
• If ftp fails, check to see if TCP is configured on both hosts by verifying the
/etc/protocols file. Telnet and ftp work at the transport layer and require TCP. If
TCP is not configured, configure it now and repeat the Transport Level Test (
Figure 4-7).
• If TCP is installed on both hosts, telnet to another host and use netstat(1M) to
check for lost packets. If the network is congested, you may need to reconfigure the
network. If network congestion is not the cause of the problem, more detailed
network diagnostics are required. In either case, call your HP representative.
