Chapter 4
4-4
• Unable to establish link. Make sure that physical connections are in
place, tightly attached, properly terminated,
and connecting the appropriate devices. See
Chapter 1, "Quick Start " for wiring for star and
thin backbone networks. See Chapter 3:
"Network Planning," for other configurations.
Check for loopback at a device connection or
between hubs, if wiring has recently been
changed.
• No communication through AUI port. Broken or improperly connected AUI cable.
Check connections, continuity, and
impedance.
Workstation Problems and Solutions
• Certain devices cannot communicate over
the network.
Check to see whether the device supports
Link Integrity testing (is pre-10BaseT). If so,
disable Link Integrity test on the port to that
device.
Check network interface card hardware
configuration. Check port settings and Link
Integrity. Run card diagnostics. Most card
manufacturers include some form of diagnostic
software to ensure the card is functioning
properly. Consult the documentation that
comes with your network interface card.
Check network operating system and software
to ensure compatibility and uncorrupted
software. Reinstall or restart software.
Ensure that proper application software is
running on the workstation to provide
connection. Check software requirements.
For example, you must be running TCP/IP
software when talking to a UNIX host system.
Check to see that interface software is
properly configured. For example, you may
be running different phases of Ethertalk on
the same network.
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