R3303-HP HSR6800 Routers Network Management and Monitoring Configuration Guide

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icmp-extensions compliant command on the devices. For more information about this command,
see Layer 3—IP Services Command Reference.
For an IPv6 network:
• Enable sending of ICMPv6 timeout packets on the intermediate devices (devices between the
source and destination devices). If the intermediate devices are HP devices, execute the ipv6
hoplimit-expires enable command on the devices. For more information about this command, see
Layer 3—IP Services Command Reference.
• Enable sending of ICMPv6 destination unreachable packets on the destination device. If the
destination device is an HP device, execute the ipv6 unreachables enable command. For more
information about this command, see Layer 3—IP Services Command Reference.
Using a tracert command to identify failed or all nodes in a
path
Execute tracert commands in any view.
Task Command Remarks
Display the routes from source to
destination.
• For an IPv4 network:
tracert [ -a source-ip | -f first-ttl | -m
max-ttl | -p port | -q packet-number
| { -mt topology-name |
-vpn-instance vpn-instance-name }|
-w timeout ] * host
• For an IPv6 network:
tracert ipv6 [ -f first-ttl | -m max-ttl |
-p port | -q packet-number |
-vpn-instance vpn-instance-name |
-w timeout ] * host
Use either method.
For more information about the tracert lsp command, see MPLS Command Reference.
System debugging
The device supports debugging for the majority of protocols and features and provides debugging
information to help users diagnose errors.
Debugging information control switches
The following switches control the display of debugging information:
• Protocol debugging switch—Controls whether to generate the protocol-specific debugging
information.
• Screen output switch—Controls whether to display the debugging information on a certain screen.
As shown in Figure 3, a
ssume that 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.