traceroute question

[WIZARD1325]

when I did this in my lab and inputted a correct ip address it worked

my questions is when i put in the wrong ip address it gives me 30 lines of ********

what does this mean? Is it thinking 30 times? looks something like this;

1. ******

2.*****

3.*****

and so on

[nixpengu1n]

Hello,

By default traceroute uses 30 host hops to identify a path to destination. What you see is: as it seems there is no suitable routing for you address destination.

[Richard Burts · Accepted solution]

Let us start with a brief review of how traceroute works.

- you issue the traceroute command

- the device builds a probe packet with the destination address set and makes the TTL be 1.

- sends the probe packet and waits for a response

- if the device receives a response from the destination then traceroute terminates with success

- if the device receives an error response (TTL exceeded, timeout, etc) then it increments the TTL and tries again. It will do this up to 30 hops.

So yes in your test when you input a wrong address then your device is trying 30 times and sending probes with increasing TTL for each time.

HTH

Rick

[@firstlomboktour99]

Thanks for great knowledge.

[WIZARD1325]

Thank you

Which bools were written this way

[Richard Burts]

I am glad that my explanation was helpful. Thank you for marking this question as solved. This will help other readers in the forum to identify discussions that have helpful information. These forums are excellent places to learn about networking. I hope to see you continue to be active in the forums.

HTH

Rick