Hardware Troubleshooting for Cisco1700 Series RoutersInteractive: This document offers customized analysis of yourCisco device.ContentsIntroductionPrerequisitesRequirementsComponents UsedHardware-Software Compatibility and Memory RequirementsError MessagesConventionsModules and CardsDSP Optimization on the Cisco 1751 and Cisco 1760 RoutersWIC-1ENET ModuleIdentifying the IssueTroubleshooting ISDN InterfacesTroubleshooting Router HangsTroubleshooting Bus Error CrashesRouter Does Not BootRouter CrashesWatchdog TimeoutsRouter Is Dropping PacketsMemory LeaksSummaryRelated InformationIntroductionValuable time and resources are often wasted replacing hardware that actually functions properly. Thisdocument helps troubleshoot potential hardware issues with Cisco 1700 Series Routers, and can helpyou identify which component may be causing a hardware failure, depending on the type of error thatthe router is experiencing.Note: This document does not cover any software-related failures except for those that are oftenTAC Notice: What'sChanging on TAC WebHelp us help you.