This chapter provides a general description of the router diagnostic program and the interface diagnostic programs it supports. It also describes the two modes the diagnostic programs operate in, the menu functions, and booting the router diagnostic program. This chapter includes the following sections:
General Description
Modes of Operation
Key Functions
Booting the Router Diagnostic Program
General Description
Diagnostics is a software program that detects and isolates hardware problems. The diagnostic programs for the CNX routers test the hardware components of the motherboard, daughtercards, and network interface cards.
When you initially configure a CNX router, it is recommended that you run the diagnostic programs to check the hardware. Diagnostic testing is also useful when an individual network interface card is not functioning properly; for example, when the UP LED on the interface card does not light on power-up or the time frame for transmitting and receiving packets on the network interface card is significantly below average.
The router diagnostic program is an executive system that supports the diagnostic program for each network interface card. It provides a menu-driven interface as well as default data values and flag settings. It also has an error reporting and error logging function.
Modes of Operation
There are two modes of operation for the diagnostic programs: automatic and manual mode.
Automatic mode runs the diagnostic programs for all of the interface cards in the SRAM configuration. It uses the default test data values and flag settings of the router diagnostic system. Automatic mode also displays the current hardware configuration which is initially obtained from the motherboard. You cannot change the current hardware configuration while in automatic mode.
Manual mode executes the diagnostic programs for the network interface cards one at a time. Using menus, you select the group and individual tests that run as well as the test data values and flag settings. Manual mode also allows you to read, change, delete, and add to the hardware configuration.
Note: You can only run the loopback and network tests when the diagnostic programs are operating in manual mode.
Key Functions
The following key functions are available when the diagnostic programs are operating in manual mode:
How many passes [0 = forever][1]:To exit this prompt and return to the current menu, press Ò.
Figure 1-1 Disabling the Watchdog Timer
