3com 4500 PWR 26-PORT 用户手册

This section describes the system debugging options, and the system diagnostics 
information that can be displayed on your Switch 4500.

debugging module-name [ debugging-option ] 

undo debugging { all | module-name [ debugging-option ] }

User view

: Disable all the debugging.

: The interval during which the debugging command is valid. 

The 

 value can range from 1 to 1440 minutes.

 Specify the module name.

 Debugging option.

Use the 

 command to enable the system debugging. Use the 

 command to disable the system debugging. 

By default, all the debugging processes are disabled.

The Switch provides various kinds of debugging functions for technical support 
personnel and experienced maintenance staff to troubleshoot the network.

Enabling the debugging will generate a large amount of debugging information 
and decrease the system efficiency. If the 

 command is used, it will 

adversely affect the operational performance of the network. Use the 

 command to disable all debugging.

By default, if multiple devices form a fabric, the debugging information of the 
master is broadcasted within the fabric and the debugging information of the 
slave is only displayed on the slave device. You can view the debugging 
information including that of the master and the device in which the login port 
resides.

You can enable the logging, debugging and trap information switches within the 
fabric by executing the i

 command. Synchronization 

is a process that each switch sends its own information to the other switches in 
the fabric, and meantime receives information from others to update local 
information, ensuring the consistency of logging, debugging and trap information 
in a fabric.