Chapter 1
Configuring System Message Logging and Smart Logging
Beginning in privileged EXEC mode, follow these steps to configure synchronous logging. This
procedure is optional.
Command
Step 1
configure terminal
Step 2
line [console | vty] line-number
[ending-line-number]
Step 3
logging synchronous [level [severity-level |
all] | limit number-of-buffers]
Step 4
end
Step 5
show running-config
Step 6
copy running-config startup-config
To disable synchronization of unsolicited messages and debug output, use the no logging synchronous
[level severity-level | all] [limit number-of-buffers] line configuration command.
OL-25303-03
Purpose
Enter global configuration mode.
Specify the line to be configured for synchronous logging of
messages.
Use the console keyword for configurations that occur through
•
the switch console port or the Ethernet management port.
Use the line vty line-number command to specify which vty
•
lines are to have synchronous logging enabled. You use a vty
connection for configurations that occur through a Telnet
session. The range of line numbers is from 0 to 15.
You can change the setting of all 16 vty lines at once by entering:
line vty 0 15
Or you can change the setting of the single vty line being used for
your current connection. For example, to change the setting for vty
line 2, enter:
line vty 2
When you enter this command, the mode changes to line
configuration.
Enable synchronous logging of messages.
(Optional) For level severity-level, specify the message severity
•
level. Messages with a severity level equal to or higher than this
value are printed asynchronously. Low numbers mean greater
severity and high numbers mean lesser severity. The default is 2.
(Optional) Specifying level all means that all messages are
•
printed asynchronously regardless of the severity level.
(Optional) For limit number-of-buffers, specify the number of
•
buffers to be queued for the terminal after which new messages
are dropped. The range is 0 to 2147483647. The default is 20.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
Configuring System Message Logging
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