Hi broI think you will build one syslog server to collect syslog alarm from all of devices, or using cisco prime software of ciscoThanks

Hi mr,You should use command belowShow ip route 0.0.0.0/0If it is static route => route 0.0.0.0/0 is owner of this core switchif it is route learn via ospf => check next hop and you will know default route learn from (maybe learn from router of other...