3Com 3CDSG8-US User Guide - Page 86

Troubleshooting, Problem Management, Troubleshooting Solutions

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86 17 TROUBLESHOOTING Troubleshooting This section describes problems that may arise when installing the and how to resolve these issue. This section includes the following topics: • Problem Management - Provides information about problem management. • Troubleshooting Solutions - Provides a list of troubleshooting issues and solutions for using the device. Problem Management Problem management includes isolating problems, quantifying the problems, and then applying the solution. When a problem is detected, the exact nature of the problem must be determined. This includes how the problem is detected, and what are the possible causes of the problem. With the problem known, the effect of the problem is recorded with all known results from the problem. Once the problem is quantified, the solution is applied. Solutions are found either in this chapter, or through customer support. If no solution is found in this chapter, contact Customer Support. Troubleshooting Solutions Listed below are some possible troubleshooting problems and solutions. These error messages include: • Cannot connect to management using RS-232 serial connection • Cannot connect to switch management using HTTP, SNMP, etc. • Self-test exceeds 15 seconds • No connection is established and the port LED is on • Device is in a reboot loop • No connection and the port LED is off • Lost Password.

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86
Troubleshooting
17
T
ROUBLESHOOTING
This section describes problems that may arise when installing the and how to resolve these
issue. This section includes the following topics:
•
Problem Management
— Provides information about problem management.
•
Troubleshooting Solutions
— Provides a list of troubleshooting issues and solutions
for using the device.
________________________________________________________________
Problem Management
Problem management includes isolating problems, quantifying the problems, and then applying
the solution. When a problem is detected, the exact nature of the problem must be determined.
This includes how the problem is detected, and what are the possible causes of the problem.
With the problem known, the effect of the problem is recorded with all known results from the
problem. Once the problem is quantified, the solution is applied. Solutions are found either in
this chapter, or through customer support. If no solution is found in this chapter, contact
Customer Support.
________________________________________________________________
Troubleshooting Solutions
Listed below are some possible troubleshooting problems and solutions. These error messages
include:
•
Cannot connect to management using RS-232 serial connection
•
Cannot connect to switch management using HTTP, SNMP, etc.
•
Self-test exceeds 15 seconds
•
No connection is established and the port LED is on
•
Device is in a reboot loop
•
No connection and the port LED is off
•
Lost Password.