The November Technical Services News from Cisco included the Annotating Troubleshooting Sessions document from the Cisco’s support wiki. The document describes two well hidden features of Cisco IOS:
- The send log exec-level command writes a line in the syslog, allowing you to delineate logging or debugging outputs.
- The exclamation mark used as the first character in any IOS command line (not just in the configuration) serves as a comment. If you’re logging the TTY session, you can use these comments to document the session.