Cabletron Systems 2H253-25R manual Troubleshooting Checklist, Off

Troubleshooting Checklist

4.2TROUBLESHOOTING CHECKLIST

If the 2H253-25R is not working properly, refer to Table 4-2for a checklist of possible problems, causes, and recommended actions to resolve the problem.

Table 4-2 Troubleshooting Checklist

Problem	Possible Cause	Recommended Action
All LEDs are	Loss of power.	Check for proper connection of the
OFF.		power cable and its access to a live
		outlet.
	Installed improperly.	Ensure that the 2H253-25R was
		installed properly according to the
		installation instructions in Chapter 3.
No Local	Autobaud is enabled, but the	Press ENTER (RETURN) (may take
Management	baud rate has not yet been	up to four times).
Password screen.	detected.
	Terminal setup is not correct.	Refer to the SmartSwitch Series
		2E253, 2H252, 2H253, and 2H258
		Local Management User’s Guide for
		proper setup procedures.
	Improper console cable pinouts.	Refer to Appendix A for proper
		console port pinouts.
	Corrupt firmware image, or	If possible, attempt to download the
	hardware fault.	image to the 2H253-25R again. Refer
		to Section B.3 for instructions to clear
		NVRAM.
Cannot navigate	Improper Community Names	1. Refer to the SmartSwitch Series
beyond Password	Table.	2E253, 2H252, 2H253, and 2H258
screen.		Local Management User’s Guide for
		the Community Names Table setup.
		2. If you have forgotten the
		Community Names, refer to
		Appendix B for instructions on how
		to set the mode switch to reset the
		Community Names to their default
		values.

Troubleshooting 4-5