1036 CHAPTER 84: SYSTEM MAINTAINING AND DEBUGGING
■ Only the directly connected segment address can be pinged if the outgoing
interface is specified with the -i argument.
System Debugging
n
■ The debugging commands are usually used by administrators in diagnosing
network failure.
■ Output of the debugging information may reduce system efficiency, especially
during execution of the debugging all command.
■ After completing the debugging, you are recommended to use the undo
debugging all command to disable all the debugging functions.
■ You must configure the debugging, terminal debugging and terminal
monitor commands first to display the detailed debugging information on the
terminal. For the detailed description on the terminal debugging and
terminal monitor commands, refer to “Configuring Information Center” on
page 1009.
System Maintaining
Example
Network requirements
■ The IP address of the destination device is 10.1.1.4.
■ Display the routers used while packets are forwarded from the current device
to the destination device.
Network diagram (omitted here)
Configuration procedure
<Sysname> tracert 10.1.1.4
traceroute to 10.1.1.4 30 hops max, 40 bytes packet
1 128.3.112.1 19 ms 19 ms 0 ms
2 128.32.216.1 39 ms 39 ms 19 ms
3 128.32.136.23 39 ms 40 ms 39 ms
4 128.32.168.22 39 ms 39 ms 39 ms
5 128.32.197.4 40 ms 59 ms 59 ms
6 131.119.2.5 59 ms 59 ms 59 ms
To do… Use the command… Remarks
Enable the terminal
monitoring of system
information
terminal monitor Optional
The terminal monitoring on
the console is enabled by
default and that on the
monitoring terminal is
disabled by default.
Enable the terminal display of
debugging information
terminal debugging Required
Disabled by default
Available in user view
Enable debugging for a
specified module
debugging { all [ timeout
time ] | module-name
[ option ]}
Required
Disabled by default
Available in user view
Display the enabled
debugging functions
display debugging
[ interface interface-type
interface-number ]
[ module-name ]
Optional
Available in any view
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