User’s Manual of
Syntax
traceroute
hostname — Hostname of the destination host (Range: Valid IP Address)
size packet_size — Number of bytes in a packet. (Range:
ttl
count packet_count — The number of probes to be sent at each TTL level.
timeout time_out — The number of seconds to wait for a response to a probe packet.
source
tos tos — The
Default Configuration
size packet_size — The default is 40 bytes. ttl
count packet_count — The default count is 3. timeout time_out — The default is 3 seconds.
Command Mode
User EXEC mode
User Guidelines
The traceroute command works by taking advantage of the error messages generated by routers when a datagram exceeds its
The traceroute command starts by sending probe datagrams with a TTL value of one. This causes the first router to discard the probe datagram and send back an error message. The traceroute command sends several probes at each TTL level and displays the
The traceroute command sends out one probe at a time. Each outgoing packet may result in one or two error messages. A "time exceeded" error message indicates that an intermediate router has seen and discarded the probe. A "destination unreachable" error message indicates that the destination node has received the probe and discarded it because it could not deliver the packet. If the timer goes off before a response comes in, the traceroute command prints an asterisk (*).
The traceroute command terminates when the destination responds, when the maximum TTL is exceeded, or when the user interrupts the trace with Esc.
To find the trace to an
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