7
To do…
Use the command…
Remarks
Display the enabled
debugging functions
display
debugging
[
interface
interface-type interface-number
]
[
module-name
] [
|
{
begin
|
exclude
|
include
}
regular-expression
]
Optional
Available in any view
NOTE:
You must configure the
debugging
,
terminal debugging
and
terminal monitor
commands before
you can display the detailed debugging information on the terminal. For more information about
the
terminal debugging
and
terminal monitor
commands, see
Network Management and
Monitoring Command Reference.
Ping and tracert configuration example
Network requirements
As shown in
, Device A failed to telnet Device C. Determine whether Device A and Device C can
reach each other. If they cannot reach each other, locate the failed nodes in the network.
Figure 4
Network diagram
Configuration procedure
# Use the
ping
command to display whether Device A and Device C can reach each other.
<DeviceA> ping 1.1.2.2
PING 1.1.2.2: 56 data bytes, press CTRL_C to break
Request time out
Request time out
Request time out
Request time out
Request time out
--- 1.1.2.2 ping statistics ---
5 packet(s) transmitted
0 packet(s) received
100.00% packet loss
# Device A and Device C cannot reach each other. Use the
tracert
command to determine failed nodes.
<DeviceA> system-view
[DeviceA] ip ttl-expires enable
[DeviceA] ip unreachables enable
[DeviceA] tracert 1.1.2.2
traceroute to 1.1.2.2(1.1.2.2) 30 hops max,40 bytes packet, press CTRL_C to bre
ak
1 1.1.1.2 14 ms 10 ms 20 ms