traceroute problem

[wminghao]

hi:
The problem is that:
How do I find a machine I tracerouted is a
NON-EXISTANT machine or is just running down(not responding)?
Is there a way when I looked at the packets to see any difference between them?

thanks

 

[MikeLacey]

hi,

not really, if the machine is in the dns (so it has a name - like

http://www.tek-tips.com

say) then ping will return 'bad ip address' but if all you have is a number then there is no way to tell the difference between a non-existent host and on that is turned off.

Mike
michael.j.lacey@ntlworld.com

http://www.cargill.com/

 

[wminghao]

Thanks, but when dns server return "bad ip address",
it means the machine with the name doesn't exist in the dns.
Suppose the machine with

http://www.tek-tips.com

is down, then I tracert return the same information as if I traced an ip that does not exist.

Is there any way to determin the difference

Thanks

 

[MikeLacey]

as i said before -- not that i'm aware of

Mike
michael.j.lacey@ntlworld.com

http://www.cargill.com/

 

[bigscouse]

Experiment, try it your self and look at the results.

Ged Jones

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