HP (Hewlett-Packard) 100BASE-TX Benutzerhandbuch
Chapter 6
85
Troubleshooting 10/100Base-TX/9000
Diagnostic Flowcharts
Flowchart 8 Procedures
A.
Execute: telnet to remote host. Try to establish a
telnet connection to the remote host.
telnet connection to the remote host.
B.
Successful? If your telnet attempt was successful,
stop. The connection is o.k. through the Transport
Layer (OSI Layer 4).
stop. The connection is o.k. through the Transport
Layer (OSI Layer 4).
C.
Execute: ftp to remote host. Unlike telnet, ftp does
not go through a pseudoterminal driver (pty) on your
system. This step tests to see if the pty is why telnet
failed.
not go through a pseudoterminal driver (pty) on your
system. This step tests to see if the pty is why telnet
failed.
D.
Successful? If ftp is successful, you likely have a
problem with a pty on your system. Contact your HP
representative.
problem with a pty on your system. Contact your HP
representative.
E.
TCP not configured on local nor remote host?
Neither telnet or ftp will work if TCP is not configured
on either side of the connection. Check the
/etc/protocols file on both hosts to be sure TCP is
installed and configured.
Neither telnet or ftp will work if TCP is not configured
on either side of the connection. Check the
/etc/protocols file on both hosts to be sure TCP is
installed and configured.
F.
Network congested? If TCP is installed on both
hosts, do a file transfer to another remote host on the
network. Use netstat(1) to check for lost packets.
hosts, do a file transfer to another remote host on the
network. Use netstat(1) to check for lost packets.
If network congestion is not the cause, more detailed
diagnostics are required. Again, contact your HP
representative.
diagnostics are required. Again, contact your HP
representative.
G.
Configure TCP. If necessary, install TCP on either or
both hosts. Start again with this flowchart.
both hosts. Start again with this flowchart.