28-4
Catalyst 2928 Switch Software Configuration Guide
OL-23389-01
Chapter 28 Configuring System Message Logging
Configuring System Message Logging
Beginning in privileged EXEC mode, follow these steps to disable message logging. This procedure is
optional.
Disabling the logging process can slow down the switch because a process must wait until the messages
are written to the console before continuing. When the logging process is disabled, messages appear on
the console as soon as they are produced, often appearing in the middle of command output.
The
logging synchronous
global configuration command also affects the display of messages to the
console. When this command is enabled, messages appear only after you press Return. For more
information, see the
“Synchronizing Log Messages” section on page 28-5
To re-enable message logging after it has been disabled, use the
logging on
global configuration
command.
Setting the Message Display Destination Device
If message logging is enabled, you can send messages to specific locations in addition to the console.
Beginning in privileged EXEC mode, use one or more of the following commands to specify the
locations that receive messages. This procedure is optional.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
no logging console
Disable message logging.
Step 3
end
Return to privileged EXEC mode.
Step 4
show running-config
or
show logging
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
logging buffered
[
size
]
Log messages to an internal buffer on the switch. The range is 4096 to
2147483647 bytes. The default buffer size is 4096 bytes.
If the switch fails, the log file is lost unless you had previously saved it to
flash memory. See Step 4.
Note
Do not make the buffer size too large because the switch could run
out of memory for other tasks. Use the
show memory
privileged
EXEC command to view the free processor memory on the switch.
However, this value is the maximum available, and the buffer size
should
not
be set to this amount.
