Cabletron Systems 2200 manual 2E253, 2H252, 2H253, and 2H258 Local

Troubleshooting Checklist

Table 4-2 Troubleshooting Checklist (Continued)

Problem	Possible Cause	Recommended Action
Cannot contact	IP address not assigned.	Refer to SmartSwitch Series 2E253, 2H252,
the 2E253-49R		2H253, and 2H258 Local Management
through in-band		User’s Guide for the IP address assignment
management.		procedure.
	Port is disabled.	Enable port. Refer to SmartSwitch Series
		2E253, 2H252, 2H253, and 2H258 Local
		Management User’s Guide for instructions
		to enable/disable ports.
	No link to device.	1. Verify that all network connections
		between the network management station
		and the 2E253-49R are valid and
		operating.
		2. If the problem continues, contact
		Cabletron Systems for technical support.
Port(s) goes into	Loop condition detected.	1. Verify that Spanning Tree is enabled.
standby for no		Refer to SmartSwitch Series 2E253,
apparent reason.		2H252, 2H253, and 2H258 Local
		Management User’s Guide for the
		instructions to set the type of STA.
		2. Review the network design and delete
		unnecessary loops.
		3. If the problem continues, contact
		Cabletron Systems for technical support.

User parameters	1. Position of Mode switch
(IP address,	(7), NVRAM Reset, was
Device and	changed sometime before
Module name,	either cycling power or
etc.) were lost	pressing the RESET
when the	button, causing the
2E253-49R	user-entered parameters to
power was cycled	reset to factory default
or the front panel	settings.
RESET button	2. Clear NVRAM was set
was pressed.
	through Local
	Management.

1.Reenter the lost parameters as necessary. Refer to 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 Cabletron Systems for technical support.

4-6Troubleshooting