EXFO FTB-8500 Series for FTB-500 - Manual (Page 414)

Tools Tabs
400 FTB-8500 Series and FTB-8120NGE/8130NGE
Trace Route Results
Trace Route Results
Press Tools, Ping, Configuration, in the Tool list, press Trace Route, and
press Results.
For Ping, see Ping Results on page 396.
To succeed, a Trace Route command shall be acknowledged by the
network device within a given delay. Typically a Trace Route command
can fail for the following reasons:

The IP address is unavailable or unknown.

The time allowed to perform the Trace Route command is too
short.

The remote device is not supporting ICMP messaging.
The Trace Route results are displayed with the following columns:

#: Indicates the attempt number.