HP ProCurve 6120G/XG Configuration Manual page 580

Troubleshooting
Diagnostic Tools
A Low Maxttl Causes Traceroute To Halt Before Reaching the
Destination Address. For example, executing traceroute with its default
values for a destination IP address that is four hops away produces a result
similar to this:
Figure C-14. Example of a Completed Traceroute Enquiry
Continuing from the previous example (Figure C-14, above), executing
traceroute with an insufficient maxttl for the actual hop count produces an
output similar to this:
Traceroute does not reach
destination IP address
because of low maxttl
setting.
Figure C-15. Example of Incomplete Traceroute Due to Low Maxttl Setting
C-62
[source <ip-addr | vlan-id> | oobm]
The source IP address or VLAN. The source IP address must
be owned by the router. If a VLAN is specified, the IP address
associated with the specified VLAN is used. For switches that
have a separate out-of-band management (OOBM) port,
oobm specifies that the traffic originates from the out-of­
band management port.
Destination IP Address
Intermediate router hops
with the time taken for the
switch to receive
acknowledgement of
each probe reaching each
router.
The asterisk indicates there was a
timeout on the second probe to the third
hop.