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Re: calculate subnet help

by sulfericacid (Deacon)
on Aug 26, 2011 at 15:39 UTC ( #922681=note: print w/ replies, xml ) Need Help??

in reply to calculate subnet help

Not the cleanest but it works. BTW you can't also separate on 0, all you care about is the unique octect that does not == 255. Your logic was a little off.

My route: I dumped the entire IP address array inside the subnet array for simplicity. Then I iterated over the subnet array and did the calculations and 0 assignments.

sub getmask { push(@sub, @ip); my $cnt = -1; foreach my $line (@mask) { $cnt++; if ($line != 255) { if ($flag > 0) { $sub[$cnt] = 0; } my $magic = 256 - $line; my $rem = $ip[$cnt] / $magic; $rem =~ s/\.(.+)//; $sub[$cnt] = $magic * $rem; } } print join(".", @sub);

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