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Chapter 8. Network Management and Problem Determination
The 3708 provides several methods for identifying problems and improving the
performance of your network. The following methods are discussed in this chapter:
• Using the 3708 alerts
• Using the control terminal diagnostic facilities
• Using the 3708 built-in diagnostic tests
• Using the response time monitor.
Using the 3708 Alerts
The 3708 has full Communication Network Management (CNM) support for
centralized network control. Full support for the 3708 alerts is available only
through NetView.
1
The 3708 handles most error detection, recording, and recovery. It records errors
such as:
• Hardware and microcode failures
• Errors that occur during sessions between ASCII hosts and ASCII devices
This includes errors with the following hardware or software components:
Emulation protocol layer task
Port
Local modem interface, including the local terminal or modem
EIA cable
3708 EIA drivers and receivers.
• Errors for temporarily unowned devices
Unowned devices are devices that have logged onto the 3708 but have not yet
been assigned to the SNA host. Errors for temporarily unowned devices are
identical to errors for the ASCII pass-through mode and are transmitted to the
control terminal and any active SNA hosts.
For each of these errors, the 3708 takes the following action:
• Logs the error in the 3708 error log
• Reports the error on all available SNA host links using an NMVT 0000 alert
• Enters an abbreviated entry in the alert log for display at the control terminal.
The 3708 sends alerts to the control terminal, NetView, and all owning SNA hosts.
To analyze alerts from the 3708, the user can view alerts at the control terminal
display or use NetView.
1
NetView is an IBM program product that provides all the functions previously available from three separate
products - NCCF, NLDM, and NPDA. NetView also provides new functions beyond those previously available
from the separate products such as simplified instruction and operation, status monitor, browse, and online help
functions.
Chapter 8. Network Management and Problem Determination
8-1
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