C:\test>1170268.pl
{
  Hostname1 => {
                 "1.1.1.1    " => "Cisco",
                 "Chassis Serial Number" => "xyz123",
                 Interface => "Gig0/0/31",
               },
  Hostname2 => {
                 "2.2.2.2    " => "Juniper",
                 "Chassis Serial Number" => "abc123",
                 Interface => "Gi-0/0/31",
               },
}