Interface link status logging on Cisco 6500 platform
From Tech-Wiki
logging on logging buffered 65536 warnings -- Sets the sysog level to log at to the buffer (warnings and above) logging trap warnings -- Sets the sysog level to log at to the syslog server (warnings and above) logging facility local6 -- Sets the syslog facility to use logging <log host> -- Sets the syslog server IP The following only applies to a 6500 - 3750s it is on by default:
logging event link-status default -- Turns on link up/down on 6500 platforms