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Chapter 4: Troubleshooting
4-6 2E48-27R/2E49-27R User’s Guide
4.3 TROUBLESHOOTING CHECKLIST
If the 2E4X-27R is not working properly, refer to Table 4-4 for a checklist
of possible problems, causes, and recommended actions to resolve the
problem.
Table 4-4 Troubleshooting Checklist
Problem Possible Cause Recommended Action
All LEDs are OFF. Loss of power. Check for proper connection
of the power cable and its
access to a live outlet.
Installed improperly. Check the installation.
No Local
Management
Password screen.
Autobaud is enabled, but
the baud rate has not yet
been sensed.
Press ENTER (RETURN)
(may take up to four times).
Terminal setup is not
correct.
Refer to Chapter 5 for proper
setup procedures.
Improper console cable
pinouts.
Refer to Appendix A for
proper console port pinouts.
Cannot contact the
device from in-band
management.
Improper Community
Names Table.
Refer to Chapter 5
for Community Names Table
setup.
IP address not assigned. Refer to Chapter 5 for IP
address assignment
procedure.
Port is disabled. Enable port.
No link to device. Check link to device.
Port(s) goes into
standby for no
apparent reason.
Loop condition detected. 1. Review network design
and delete unnecessary
loops.
2. Call the Cabletron Systems
GCC if the problem
continues.
User parameters (IP
address, Device and
Module name, etc.)
were lost when the
2E4X-27R power
was cycled or the
front panel RESET
button was pressed.
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.
1. Reenter the lost
parameters as necessary.
2. Call the Cabletron Systems
GCC if the problem
continues.