H3C Technologies H3C SecPath F1000-E - Manual (Page 190)

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• Enable sending of ICMP destination unreachable packets on the destination device. If the
destination device is an H3C device, execute the ip unreachables enable command. For more
information about this command, see IP Performance Optimization Commands in the IP Services
Volume.
Tracert configuration
Follow these steps to configure tracert:
To do… Use the command… Remarks
Enter system view system-view —
tracert [ -a source-ip | -f first-ttl | -m
max-ttl | -p port | -q packet-number |
-vpn-instance vpn-instance-name |
-w timeout ] * host
Display the routes from source to
destination
tracert ipv6 [ -f first-ttl | -m max-ttl |
-p port | -q packet-number | -w
timeout ] * host
Required
Use either approach
The tracert command is
applicable in an IPv4 network;
the tracert ipv6 command is
applicable in an IPv6 network.
Available in any view
System Debugging
Introduction to System Debugging
The device provides various debugging functions. For the majority of protocols and features supported,
the system provides corresponding debugging information to help users diagnose errors.
The following two switches control the display of debugging information:
• Protocol debugging switch, which controls protocol-specific debugging information.
• Screen output switch, which controls whether to display the debugging information on a certain
screen.
As Figure 3 illustrates, assume the device can provide debugging for the three modules 1, 2, and 3. The
debugging information can be output on a terminal only when both the protocol debugging switch and
the screen output switch are turned on.