Chapter 4: Troubleshooting4-62E42-27/2E42-27R/2E43-27/2E43-27R User’s Guide4.3 TROUBLESHOOTING CHECKLISTIf the 2E4X-27 is not working properly, refer to Table 4-4 for a checklistof possible problems, causes, and recommended actions to resolve theproblem.Table 4-4 Troubleshooting ChecklistProblem Possible Cause Recommended ActionAll LEDs are OFF. Loss of power. Check for proper connectionof the power cable and itsaccess to a live outlet.Installed improperly. Check the installation.No LocalManagementPassword screen.Autobaud is enabled. Press ENTER (RETURN)(may take up to four times).Terminal setup is notcorrect.Refer to Chapter 5 for propersetup procedures.Improper console cableused.Refer to Appendix A forproper console port pinouts.Cannot contact thedevice from in-bandmanagement.Improper CommunityNames Table.Refer to Chapter 5for Community Names Tablesetup.IP address not assigned. Refer to Chapter 5 for IPaddress assignmentprocedure.Port is disabled. Enable port.No link to device. Check link to device.Port(s) goes intostandby for noapparent reason.Loop condition detected. 1. Review the network designand delete unnecessaryloops.2. Call the Cabletron SystemsGlobal Call Center if theproblem continues.User parameters (IPaddress, Device andModule name, etc.)were lost when the2E4X-27 power wascycled or the frontpanel RESET buttonwas pressed.Mode switch (7), NVRAMReset, was changedsometime before eithercycling power orpressing the RESETbutton causing theuser-entered parametersto reset to factory defaultsettings.1. Reenter the lostparameters as necessary.2. Call the Cabletron SystemsGlobal Call Center if theproblem continues.
