- Enterasys Standalone Switch Installation Guide
Troubleshooting Checklist
4-4 Troubleshooting
Troubleshooting Checklist
Ifthe2G4072‐52isnotworkingproperly,refertoTable 4‐2 foracheckl istofproblems,
possiblecauses,andrecommendedactionstoresolvetheproblem.
Table 4-2 Troubleshooting Checklist
Problem Possible Cause Recommended Action
All LEDs are
OFF.
Loss of power. Ensure the 2G4072-52 was installed properly according to
the installation instructions in Chapter 3, and that the
chassis has power.
No Local
Management
Password
screen.
Incorrect terminal setup. Refer to the Enterasys Matrix N Standalone Series
Configuration Guide for proper setup procedures.
Improper console cable pinouts. Refer to Appendix A for proper COM port pinouts.
Corrupt firmware image or
hardware fault.
If possible, attempt to download the image to the
2G4072-52 again. Refer to Appendix B for instructions to
clear NVRAM.
Cannot navigate
beyond
Password
screen.
Improper username/ password
combination entered.
If the username/password combination has been forgotten,
refer to Appendix B for instructions on how to set the mode
switch to reset the username/password combination to the
default values.
Cannot contact
the 2G4072-52
through in-band
management.
IP address not assigned. Refer to the Enterasys Matrix N Standalone Series
Configuration Guide for the IP address assignment
procedure.
Port is disabled. Enable port. See Enterasys Matrix N Standalone Series
Configuration Guide for instructions to enable/disable
ports.
Host Port policy and/or
management VLAN is incorrectly
configured, or not configured.
Verify that a management VLAN exists and that it is
associated with the Host Port.
Refer to the Enterasys Matrix N Standalone Series
Configuration Guide for information about Host Port and
management VLAN configuration.
No link to device. Verify that all network connections between the network
management station and the 2G4072-52 are valid and
operating.
If the problem continues, contact Enterasys Networks for
technical support.