Cisco Router Debug Commands

Enable debug for RIP
debug ip rip

Enable summary IGRP debug information
debug ip igrp events

Enable detailed IGRP debug information
debug ip igrp transactions

Debug IPX RIP
debug ipx routing activity

Debug IPX SAP
debug IPX SAP

Enable debug for CHAP or PAP
debug ppp authentication

Switch all debugging off
no debug all
undebug all