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

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Useful show commands

• show logging - Shows information on local and external syslog

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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 lower levels (warning to emergency)
logging source-interface loopback0
exit
!
show logging