Cisco Systems 3560 Manual De Usuario

The logging buffered global configuration command copies logging messages to an internal buffer. The 
buffer is circular, so newer messages overwrite older messages after the buffer is full. To display the 
messages that are logged in the buffer, use the show logging privileged EXEC command. The first 
message displayed is the oldest message in the buffer. To clear the contents of the buffer, use the clear 
logging privileged EXEC command.

Use the logging event power-inline-status interface configuration command to enable and to disable 
logging of Power over Ethernet (PoE) events on specific PoE-capable ports. Logging on these ports is 
enabled by default.

To disable logging to the console, use the no logging console global configuration command. To disable 
logging to a file, use the no logging file [severity-level-number | type] global configuration command.

You can synchronize unsolicited messages and debug privileged EXEC command output with solicited 
device output and prompts for a specific console port line or virtual terminal line. You can identify the 
types of messages to be output asynchronously based on the level of severity. You can also configure 
the maximum number of buffers for storing asynchronous messages for the terminal after which 
messages are dropped.

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.

Enter global configuration mode.

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:

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:

When you enter this command, the mode changes to line 
configuration.