RTS DV-3400 Informacje Techniczne Pobierz pdf (Strona 547)

100

101

Troubleshooting

Diagnostic Tools

Intermediate router hops

with the time taken for the

switch to receive

acknowledgement of

each probe reaching each

router.

Destination IP Address

Figure C-23. Example of a Completed Traceroute Enquiry

Continuing from the previous example (figure C-23, 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.

The asterisk indicates there was a

timeout on the second probe to the third

hop.

Figure C-24. Example of Incomplete Traceroute Due to Low Maxttl Setting

If A Network Condition Prevents Traceroute from Reaching the

Destination. Common reasons for Traceroute failing to reach a destination

include:

■ Timeouts (indicated by one asterisk per probe, per hop; see figure C-

24, above.)

■ Unreachable hosts

■ Unreachable networks

■ Interference from firewalls

■ Hosts configured to avoid responding

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