Enterasys Networks 2H252-25R manual SmartSwitch Series 2E253

Troubleshooting Checklist

Table 4-2 Troubleshooting Checklist (Continued)

Problem	Possible Cause	Recommended Action
Port(s) goes into	Loop condition detected.	1. Verify that Spanning Tree is
standby for no apparent		enabled. Refer to the
reason.		SmartSwitch Series 2E253,
		2H252, 2H253 and 2H258 Local
		Management User’s Guide for
		the instructions to set the type of
		STA.
		2. Review network design and
		delete unnecessary loops.
		3. If the problem continues, contact
		Enterasys Networks for
		assistance.
User parameters (IP	1. Position of Mode switch	1. Reenter the lost parameters as
address, Device and	(7), NVRAM Reset, was	necessary. Refer to the
Module name, etc.)	changed sometime before	SmartSwitch Series 2E253,
were lost when the	either cycling power or	2H252, 2H253 and 2H258 Local
2H252-25R power was	pressing the RESET button,	Management User’s Guide for
cycled or the front panel	causing the user-entered	the instructions to configure the
RESET button was	parameters to reset to	device through Local
pressed.	factory default settings.	Management.
	2. Clear NVRAM was set	2. If the problem continues, contact
	through Local	Enterasys Networks for
	Management.	assistance.

4-8Troubleshooting