Reset Button - Enterasys 2H252-25R Installation & User Manual

Troubleshooting Checklist
Table 4-2 Troubleshooting Checklist (Continued)
Problem
Port(s) goes into
standby for no apparent
reason.
User parameters (IP
address, Device and
Module name, etc.)
were lost when the
2H252-25R power was
cycled or the front panel
RESET button was
pressed.
4-8 Troubleshooting
Possible Cause
Loop condition detected.
1. Position of Mode switch
(7), NVRAM Reset, was
changed sometime before
either cycling power or
pressing the RESET button,
causing the user-entered
parameters to reset to
factory default settings.
2. Clear NVRAM was set
through Local
Management.
Recommended Action
1. Verify that Spanning Tree is
enabled. Refer to the
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.
1. Reenter the lost parameters as
necessary. Refer to the
SmartSwitch Series 2E253,
2H252, 2H253 and 2H258 Local
Management User's Guide for
the instructions to configure the
device through Local
Management.
2. If the problem continues, contact
Enterasys Networks for
assistance.