Calculate if an IP belongs to a subnet

All, I'm trying to see if a given IP address belongs to a given
subnet, given the subnet and the subnet mask.

Is there a simple formula to do this?

Thanks,
Sashi

In news:(E-Mail Removed) ups.com,
Sashi <(E-Mail Removed)> wrote:

> All, I'm trying to see if a given IP address belongs to a given
> subnet, given the subnet and the subnet mask.
>
> Is there a simple formula to do this?

Search for the " ipcalc.pl " Perl script.

"Sashi" <(E-Mail Removed)> writes:

> All, I'm trying to see if a given IP address belongs to a given
> subnet, given the subnet and the subnet mask.
>
> Is there a simple formula to do this?

It's just a bitwise and -- if ((ip & netmask) == subnet) "yes"

On Apr 12, 5:50 pm, Joe Pfeiffer <pfeif...@cs.nmsu.edu> wrote:
> "Sashi" <small...@gmail.com> writes:
> > All, I'm trying to see if a given IP address belongs to a given
> > subnet, given the subnet and the subnet mask.
>
> > Is there a simple formula to do this?
>
> It's just a bitwise and -- if ((ip & netmask) == subnet) "yes"

D'uh!
Thanks,
Sashi

On 2007-04-12 22:59, Sashi wrote:
> All, I'm trying to see if a given IP address belongs to a given
> subnet, given the subnet and the subnet mask.
>
> Is there a simple formula to do this?
>
> Thanks,
> Sashi
>

Try this:
http://www.subnet-calculator.com/


/birre