ints = Hash.new
    Device.all.each do |d|
      if d.hostname =~ /rwc.*idf/
        d.interfaces.each do |i|
          ints[i.speed] = 0 unless ints.has_key?(i.speed)
          ints[i.speed] += 1 if (i.up? || (!i.up? && i.last_changed > 30.days.ago))
        end
      end
    end
    ints.each_pair do |speed,count|
      puts "#{speed}: #{count}"
    end