3Com Switch 4500 26-Port Configuration Manual page 253

Figure 69 illustrates the relationship between two Switches.
Figure 69 Debug Output
Debugging
information
Protocol debugging
switch
ON
Screen output switch
OFF
You can use the following commands to control the above-mentioned debugging.
Perform the following operations in User View.
Table 273 Enable/Disable the Debugging
Operation
Enable the protocol debugging
Disable the protocol debugging
Enable the terminal debugging
Disable the terminal debugging
For more about the usage and format of the debugging commands, refer to the
relevant chapters.
CAUTION: Since the debugging output will affect the system operating efficiency,
do not enable the debugging without necessity, especially use the
command with caution. When the debugging is over, disable all the 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
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
OFF ON
ON
Command
debugging { all [ timeout interval ] |
module-name [ debugging-option ] }
undo debugging { all | { protocol-name |
function-name } [ debugging-option ] }
terminal debugging
undo terminal debugging
info-center switch-on all
System Debugging 251
debugging all
command. Synchronization