Installing and Administering Internet Services

378 Chapter 12
Troubleshooting Internet Services
Diagnostic Tools Summary
Diagnostic Tools Summary
The most frequently used diagnostic tools are listed below. These tools
are documented in the link installation manuals.
Table 12-1 Diagnostic Tools
netstat
A nodal management command that returns statistical information
regarding your network.
landiag
A diagnostic program that tests LAN connections between HP 9000
computers.
linkloop
A diagnostic program that runs link-level loopback tests between
HP 9000 systems. linkloop uses IEEE 802.3 link-level test frames to
check physical connectivity with the LAN. This diagnostic tool is
different from the loopback capability of landiag because it tests only
the link-level connectivity and not the transport-level connectivity.
ping
A diagnostic program that verifies the physical connection to a remote
host and reports the round-trip communication time between the local
and remote hosts. (Type man 1M ping for more information.)
psidad
A utility under DUI that can help to identify problems on the PSI/800
board/card.
rlb
A diagnostic program that tests LAN connections to other HP 9000
computers. rlb does not test a connection to an HP 1000 computer.
x25check
x25server
These two work in tandem. x25server runs on the logically remote
host (could be same physical host) and echoes packets sent to it over the
X.25 network by x25check.
x25stat
A nodal management command that returns status and information
from the X.25 device and card. It provides interface status configuration
information and virtual circuit statistics.