Specifications

Chapter 38 traceroute Command
Traces the path a packet takes to reach a remote host.
Format
traceroute
<host>
[max-ttl
<num>
] [probes
<num>
] [size
<num>
]
[source
<secs>
] [tos
<num>
] [wait-time
<secs>
] [verbose]
[noroute]
Mode
User
Description
The
traceroute
command traces the route taken by a packet to reach a remote IP
host. The
traceroute
command examines the route taken by a packet traveling from
a source to a destination. By default, the source of the packet is the SSR router.
However, one can specify a different source and track the route between it and a
destination. The route is calculated by initially sending a probe (packet) from the
source to the destination with a TTL of 1. Each intermediate router that is not able to
reach the final destination directly will send back an ICMP Time Exceeded message.
Subsequent probes from the source will increase the TTL value by 1. As each Time
Exceeded message is received, the program keeps track of the address of each
intermediate gateway. The probing stops when the packet reaches the destination or the
TTL exceeds the
max-ttl
value.
Parameters
<host>
Hostname or IP address of the destination
max-ttl
<num>
Maximum number of gateways (“hops”) to trace
probes
<num>
Number of probes to send
size
<num>
Packet size of each probe
source
<secs>
tos
<num>
Type of Service value in the probe packet
wait-time
<secs>
verbose
Display results in verbose mode
Chapter 38