$name->{nodes}->{attCNMds1StatusIndex}->{description}

As a side note, with such complex data structures, I frequently find the output hard to read unless I tweak the indent:

my $name = $mib->compile('att_ds1');
$Data::Dumper::Indent = 1;
print Dumper($name);
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The output is then similar to the following:

$VAR1 = {
  'tree' => {
    'att-products' => {
      '9' => 'att-cnmAgent'
    },
    'attCNMds1ErrorsTable' => {
      '1' => 'attCNMds1ErrorsEntry'
    },
    'attCNMds1ErrorsEntry' => {
      '9' => 'attCNMds1ESs',
      '1' => 'attCNMds1ErrorsIndex',
      '2' => 'attCNMds1ErrorsInterval',
      '3' => 'attCNMds1ErrorsTimeStamp'
    },
    'enterprises' => {
      '74' => 'att-2'
    },
    'attCNMds1StatusTable' => {
      '1' => 'attCNMds1StatusEntry'
    },
    'attCNMds1StatusEntry' => {
      '1' => 'attCNMds1StatusIndex',
      '2' => 'attCNMds1LineStatus'
    },
    'att-2' => {
      '1' => 'att-products',
      '2' => 'att-mgmt'
    },

###
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Cheers,
Ovid

New address of my CGI Course.
Silence is Evil (feel free to copy and distribute widely - note copyright text)