Hello again Rosna
In traceroute, a probe is the number of ICMP echo requests sent to each individual hop. So if a traceroute has 7 hops to the destination, the Cisco device will send three probes, or three ICMP echo requests to each of the 7 hops for a total of 21 ICMP echo requests. If you select one probe, a single ICMP request will be sent to each hop. You won’t actually see a difference in the traceroute output.
By default, Cisco begins its traceroute on port 33434. Each hop that it traverses, it increments the destination port by one. This is how the traceroute command has been designed. You can adjust the default starting destination port by using the extended traceroute commands.
You can find out more information about the traceroute command on Cisco devices at this Cisco documentation…
I hope this has been helpful!
Laz