D TROUBLESHOOTINGThis section describes problems that may arise when installing the andhow to resolve these issue. This section includes the following topics:■ Problem Management — Provides information about problemmanagement.■ Troubleshooting Solutions — Provides a list of troubleshootingissues and solutions for using the device.■ Fail Safe Commands — Provides a way to recover from problemswith firmware, configuration settings, or a lost user name orpassword.ProblemManagementProblem management includes isolating problems, quantifying theproblems, and then applying the solution. When a problem is detected,the exact nature of the problem must be determined. This includes howthe problem is detected, and what are the possible causes of theproblem. With the problem known, the effect of the problem is recordedwith all known results from the problem. Once the problem is quantified,the solution is applied. Solutions are found either in this chapter, orthrough customer support. If no solution is found in this chapter, contactCustomer Support.TroubleshootingSolutionsListed 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 20 seconds■ No connection is established and the port LED is on■ Device is in a reboot loop
