If I were tackling such a problem, I would use a slightly different data structure.

my $ips = [
            {
               ip            => '10.1.7.142',
               counter       => 2,
               clusterstatus => 'on',
            }, 
            {
               ip            => '10.1.7.11',
               counter       => 3,
               clusterstatus => 'off',
            }, 
            {
               ip            => '10.1.7.112',
               counter       => 3,
               clusterstatus => 'on',
            }, 
         ];
[download]

Then in your template:

[%  FOREACH item IN ips %]

this is ip is [% item.ip %] counter is [% ip.counter %]

[% END %]
[download]