28-6
Catalyst 2928 Switch Software Configuration Guide
OL-23389-01
Chapter 28 Configuring System Message Logging
Configuring System Message Logging
When synchronous logging of unsolicited messages and
debug
command output is enabled, unsolicited
device output appears on the console or printed after solicited device output appears or is printed.
Unsolicited messages and
debug
command output appears on the console after the prompt for user input
is returned. Therefore, unsolicited messages and
debug
command output are not interspersed with
solicited device output and prompts. After the unsolicited messages appear, the console again displays
the user prompt.
Beginning in privileged EXEC mode, follow these steps to configure synchronous logging. This
procedure is optional.
To disable synchronization of unsolicited messages and debug output, use the
no logging synchronous
[l
evel
severity-level
|
all
] [
limit
number-of-buffers
] line configuration command.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
line
[
console
|
vty
]
line-number
[
ending-line-number
]
Specify the line to be configured for synchronous logging of
messages.
•
Use the
console
keyword for configurations that occur through
the switch console 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.
Step 3
logging synchronous
[
level
[
severity-level
|
all
] |
limit
number-of-buffers
]
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.
Step 4
end
Return to privileged EXEC mode.
Step 5
show running-config
Verify your entries.
Step 6
copy running-config startup-config
(Optional) Save your entries in the configuration file.
