Cabletron Systems STS16-20D, STS16-20R manual Communication Problems

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Specification	Value
Microsoft Windows	Disable the “Use Function, Arrow, and Ctrl
terminal emulation	Keys for Windows” option located in the
	Terminal Preference menu

Table 13. Console Configuration Settings

4.At power on (cold boot), the SmartStack STS16-20D/STS16-20R performs a series of self-test diagnostics verifying that hardware components are functioning. An example of the self-test diagnostic screen is shown later in this chapter.

Communication Problems

If the diagnostic list does not appear, or is garbled, try adjusting the baud rates between the console and the SmartStack STS16-20D/STS16-20R by using the Autobaud routine within the switch. To do this, press the reset button on the front of the switch and wait for the internal diagnostics to finish (the DIAG LED turns off). The reason for the reset is that in case the switch’s Autobaud routine is disabled, resetting it will set it to its default mode Autobaud enabled.

Depending on the type of the console, there are several console command keys that will potentially initiate the Autobaud routine in the SmartStack STS16-20D/ STS16-20R. Four of these keys are RETURN, the combination keys ALT-B, the

BREAK key, and ESC.

After the DIAG LED turns off, try one of the command keys at the console, and press it repeatedly. If there is no response, wait several seconds and again, press it repeatedly. If necessary, perform the same routine using the other command keys.

If this does not work, and there is garbled output on the screen, try pushing the unlabeled system request button on the SmartStack STS16-20D/STS16-20R. As soon as garbled characters appear, press the console’s ENTER (or RETURN) key twice in rapid succession. (Again, try the other command keys as necessary).

If the problem remains, try the following steps:

1.Check all of the cable connections.

2.Check the baud rate at the console’s set up screen; if it is not set to 9600, try this setting.

3.Try setting the console baud rate to different values up or down, and pressing RETURN for each selection.

4.If you are using a terminal emulation program, try exiting the program and restarting.

SmartStack STS16-20D/STS16-20R Token Ring Switches Installation and User Guide Accessing Switch Management