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Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-30644-01
Chapter 22 Configuring System Message Logging
Configuring System Message Logging
Enabling and Disabling Timestamps on Log Messages
By default, log messages are not timestamped.
Beginning in privileged EXEC mode, follow these steps to enable timestamping of log messages:
To disable timestamps for both debug and log messages, use the no service timestamps global
configuration command.
This example shows part of a logging display with the service timestamps log datetime global
configuration command enabled:
*Mar 1 18:46:11: %SYS-5-CONFIG_I: Configured from console by vty2 (10.34.195.36)
This example shows part of a logging display with the service timestamps log uptime global
configuration command enabled:
*Apr 13 15:29:28.000: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to
administratively down
Enabling and Disabling Sequence Numbers in Log Messages
Because there is a chance that more than one log message can have the same timestamp, you can display
messages with sequence numbers so that you can unambiguously refer to a single message. By default,
sequence numbers in log messages are not displayed.
Beginning in privileged EXEC mode, follow these steps to enable sequence numbers in log messages:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
service timestamps log uptime
or
service timestamps log datetime [msec] [localtime]
[show-timezone]
Enable log timestamps.
The first command enables timestamps on log messages,
showing the time since the system was rebooted.
The second command enables timestamps on log messages.
Depending on the options selected, the timestamp can
include the date, time in milliseconds relative to the local
time zone, and the time zone name.
Step 3
end Return to privileged EXEC mode.
Step 4
show running-config Verify your entries.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
service sequence-numbers Enable sequence numbers.
Step 3
end Return to privileged EXEC mode.
Step 4
show running-config Verify your entries.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.