Cabletron Systems NBR-420 Troubleshooting Checklist, Page, NBR-SERIES Installation Guide, Problem

Chapter 4: Troubleshooting

4.2 TROUBLESHOOTING CHECKLIST

If your NBR is not operating properly, the following checklist describes some of the problems that may occur, possible causes for the problem, and suggestions for resolving the problem.

Table 4-2 Troubleshooting Checklist

Problem	Possible Causes	Recommended
		Action
No LEDs on.	Loss of Power.	Check that the NBR has
		adequate power.
	NBR not properly	Verify proper
	installed.	installation, and check
		to see that the PWR
		LED is green.
No Local Management	Terminal setup is not	Refer to your NBR
Password screen.	correct.	Local Management
		Guide for proper setup
		procedures.
	Improper console cable/	Refer to your NBR
	UPS cable pinouts.	Local Management
		Guide for proper
		console/ UPS port
		pinouts.
Cannot contact the	Improper Community	Refer to your NBR
NBR from in-band	Names Table.	Local Management
management.		Guide for Community
	NBR does not have an	Names Table setup and
	IP address.	IP address assignment
		procedures.
	No link to device.	Check link to device.

Page 4-4 NBR-SERIES Installation Guide