21-12
Follow these steps to enable synchronous information output:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enable synchronous
information output
info-center synchronous
Required
Disabled by default
z
If system information, such as log information, is output before you input any information under the
current command line prompt, the system will not display the command line prompt after the
system information output.
z
If system information is output when you are inputting some interactive information (non Y/N
confirmation information), then after the system information output, the system will not display the
command line prompt but your previous input in a new line.
Disabling a Port from Generating Link Up/Down Logging Information
By default, all the ports of the device generate link up/down logging information when the port state
changes. Therefore, you may need to use this function in some cases, for example:
z
You only concern the states of some of the ports. In this case, you can use this function to disable
the other ports from generating link up/down logging information.
z
The state of a port is not stable, and therefore redundant logging information will be generated. In
this case, you can use this function to disable the port from generating link up/down logging
information.
Follow the steps below to disable a port from generating link up/down logging information:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter interface view
interface interface-type
interface-number
—
Disable the port from
generating link up/down
logging information
undo enable log updown
Required
By default, all ports are allowed
to generate link up/down
logging information when the
port state changes.
With this feature applied to a port, when the state of the port changes, the system does not generate
port link up/down logging information. In this case, you cannot monitor the port state changes
conveniently. Therefore, it is recommended to use the default configuration in normal cases.
