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Re: Re: Unexpected results from ping

by Rhose (Priest)
on Mar 04, 2003 at 14:59 UTC ( #240367=note: print w/ replies, xml ) Need Help??


in reply to Re: Unexpected results from ping
in thread Unexpected results from ping

Yes, that is correct. The ping utility uses ICMP echo request/ICMP echo reply while, by default, Net::Ping tries to establish a TCP session with the echo port of the target host. Try making this change to your program:

$p = Net::Ping->new('icmp');
Update
w01b0rji.cube.fred.ch `ping` OK : w01b0rji.cube.fred.ch is alive w01b0rji.cube.fred.ch $p->ping NOK svmoloch.flur.fred.ch `ping` OK : svmoloch.flur.fred.ch is alive svmoloch.flur.fred.ch $p->ping NOK 160.69.125.142 `ping` OK : 160.69.125.142 is alive 160.69.125.142 $p->ping NOK
Just to clarify, what you are seeing here is most likely the result of the specified hosts allowing ICMP echo requests, but not having a service listening to the echo port.


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