Enabling And Disabling Sequence Numbers In Log Messages (Optional) - Cisco Catalyst 4500 Series Software Configuration Manual

Chapter 70 Configuring System Message Logging
Command
Step 1
Switch# configure terminal
Step 2
Switch(config)# service timestamps log uptime
or
Switch(config)# service timestamps log
[ ] [
datetime msec
Step 3
Switch(config)# end
Step 4
Switch# show running-config
Step 5
Switch# copy running-config startup-config
To disable time-stamps 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
This example shows part of a logging display with the service timestamps log uptime global
configuration command enabled:
00:00:46: %LINK-3-UPDOWN: Interface Port-channel1, changed state to up

Enabling and Disabling Sequence Numbers in Log Messages (Optional)

Because 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.
To enable sequence numbers in log messages, perform this task, which is optional.
Command
Step 1
Switch# configure terminal
Step 2
Switch(config)# service
sequence-numbers
Step 3
Switch(config)# end
Step 4
Switch# show running-config
Step 5
Switch# copy running-config
startup-config
To disable sequence numbers, use the no service sequence-numbers global configuration command.
This example shows part of a logging display with sequence numbers enabled:
000019: %SYS-5-CONFIG_I: Configured from console by vty2 (10.34.195.36)
] [
localtime show-timezone
1 18:46:11: %SYS-5-CONFIG_I: Configured from console by vty2 (10.34.195.36)
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Purpose
Enters global configuration mode.
Enables log time-stamps.
The first command enables time-stamps on log messages,
]
showing the time since the system was rebooted.
The second command enables time-stamps 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.
Returns to privileged EXEC mode.
Verifies your entries.
(Optional) Saves your entries in the configuration file.
Purpose
Enters global configuration mode.
Enables sequence numbers.
Returns to privileged EXEC mode.
Verifies your entries.
(Optional) Saves your entries in the configuration file.
Configuring System Message Logging
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