Syslog

General Notes

  • Used to manage system logs and alerts
  • Can be stored locally, sent to vty, console lines, or forwarded to an external syslog server
  • Logging levels
    • For the logging trap command, these are the levels & their associated numbers Emergency: 0
      Alert: 1
      Critical: 2
      Error: 3
      Warning: 4
      Notice: 5
      Informational: 6
      Debug: 7

Useful show commands

  • show logging - Shows information on local and external syslog

Standard Syslog Config
logging buffered 90000 - ! Increase local logging buffer size
logging <logging-server>
service timestamps debug datetime localtime show-timezone msec
service timestamps log datetime localtime show-timezone msec
logging trap warning ! includes this level of message and all below
logging source-interface loopback0
exit
!
show logging