Thank you for your help!
I am definitely getting closer. After playing around with Thread::Queue for a while I have created my telnet2cli function as follows. I think I am missing how it works exactly since the program hangs after 5 worker iterations and doesn't do any more than that. Do I need to return the resultQ from the function? Also, as an aside, being a thread and Thread::Queue newbie, I thought if I detached the threads than I would lose any return values, which I definitely need.

Following from your code I have:

my $Qin = new Thread::Queue;
my $Qout = new Thread::Queue;

my @pool = map{ 
                threads->new( \&telnet2Cli, $Qin, 'show version')->det
+ach 
            } 1 .. 5;

my $running : shared = @pool;
$Qin->enqueue( @values );

sleep 1 while $running;

my @versionOuput = $Qout->dequeue;
[download]

sub telnet2Cli {
            require Net::Telnet::Cisco;
             
            my ($ServerQueue, $command) = @_;
            my @output = ();
            my $output = '';
            
            my $ResultQ = new Thread::Queue;
            my $Server = $ServerQueue->dequeue;
            
            my $session = Net::Telnet::Cisco->new(Host => $Server, inp
+ut_log => "input.log.$Server");
            $session->login(Password => 'Password here'); 
            if ($session->enable("Password here")) {
                        $session->cmd("terminal length 0");
                        @output = $session->cmd($cmd);        
                        $output .= "@output";   
                        
                        print "Output about to be enqueued to ResultQ 
+is $output\n";
                        $ResultQ->enqueue($output);
            } else {
                        warn "Cant enable: " . $session->errmsg;
            }
            $session->close;
            
            return $ResultQ;              
}
[download]

When I run the program from the command line I do see the expected output from the print statement, but it never continues beyond the 5th connection.

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