Its not working for me and I'm using folowing code

 
#! /usr/local/bin/perl -w

use strict;
use Net::SSH::Perl;


#my $host="192.168.10.32";## remote host IP address

my $host="netli01"; ##remote hostname
my $usr="venkatas"; ##user login ID
my $pass="banu84";  ## user login password

###### set-up remote connection

my $ssh = Net::SSH::Perl->new($host, interactive=> 0, debug=> 1, proto
+col=> '2,1');

#my $ssh = Net::SSH::Perl->new($host, interactive=> 1, debug=> 1, prot
+ocol=> '2,1');

## This stderr and stdout will help to findout whether the commands ar
+e executing or not

$ssh->register_handler("stderr", sub { 
          my($channel, $buffer) = @_; 
          print "** Standard Error - I received this:\n", $buffer->byt
+es; }); 

# This trigger works perfectly 

$ssh->register_handler("stdout", sub {
           my($channel, $buffer) = @_;
           print "** Standard Out - I received this:\n", $buffer->byte
+s; });
        

## remote login authentication
$ssh->login($usr,$pass);

#$ssh->login();
#my $job2 = $ssh->cmd("set_calico_C1" );
#my $job3 = $ssh->cmd("calico" );
#my $job4 = $ssh->cmd("date" );
#my $job2 = $ssh->cmd('setenv DISPLAY linux37:0');
#my $job3 = $ssh->cmd("bsub -q linux64_idc_1g xterm & " );

## commands to be executed on remote host
my $job1 = $ssh->cmd(<<SHELL); 
source /home/venkatas/.cshrc;
setenv DISPLAY linux37:0;
/usr/local/lsf7.0/7.0/linux2.6-glibc2.3-x86/bin/bsub -q linux64_idc_1g
+ xterm
SHELL

And the error I'm facing is 

linux37: Reading configuration data /home/venkatas/.ssh/config
linux37: Reading configuration data /etc/ssh_config
linux37: Connecting to netli01, port 22.
linux37: Remote protocol version 1.99, remote software version OpenSSH
+_3.9p1
linux37: Net::SSH::Perl Version 1.34, protocol version 2.0.
linux37: No compat match: OpenSSH_3.9p1.
linux37: Connection established.
linux37: Sent key-exchange init (KEXINIT), wait response.
linux37: Algorithms, c->s: 3des-cbc hmac-sha1 none
linux37: Algorithms, s->c: 3des-cbc hmac-sha1 none
linux37: Entering Diffie-Hellman Group 1 key exchange.
linux37: Sent DH public key, waiting for reply.
linux37: Received host key, type 'ssh-dss'.
linux37: Host 'netli01' is known and matches the host key.
linux37: Computing shared secret key.
linux37: Verifying server signature.
linux37: Waiting for NEWKEYS message.
linux37: Send NEWKEYS.
linux37: Enabling encryption/MAC/compression.
linux37: Sending request for user-authentication service.
linux37: Service accepted: ssh-userauth.
linux37: Trying empty user-authentication request.
linux37: Authentication methods that can continue: publickey,gssapi-wi
+th-mic,password.
linux37: Next method to try is publickey.
linux37: Next method to try is password.
linux37: Trying password authentication.
linux37: Login completed, opening dummy shell channel.
linux37: channel 0: new [client-session]
linux37: Requesting channel_open for channel 0.
linux37: channel 0: open confirm rwindow 0 rmax 32768
linux37: Got channel open confirmation, requesting shell.
linux37: Requesting service shell on channel 0.
linux37: channel 1: new [client-session]
linux37: Requesting channel_open for channel 1.
linux37: Entering interactive session.
linux37: Sending command: source /home/venkatas/.cshrc;
setenv DISPLAY linux37:0;
/usr/local/lsf7.0/7.0/linux2.6-glibc2.3-x86/bin/bsub -q linux64_idc_1g
+ xterm

linux37: Sending command: source /home/venkatas/.cshrc;
setenv DISPLAY linux37:0;
/usr/local/lsf7.0/7.0/linux2.6-glibc2.3-x86/bin/bsub -q linux64_idc_1g
+ xterm

linux37: Requesting service exec on channel 1.
linux37: channel 1: open confirm rwindow 0 rmax 32768
** Standard Error - I received this:
LD_LIBRARY_PATH: Undefined variable.
** Standard Error - I received this:
LD_LIBRARY_PATH: Undefined variable.
** Standard Error - I received this:
linux37: channel 1: rcvd eof
linux37: channel 1: output open -> drain
linux37: input_channel_request: rtype exit-status reply 0
linux37: channel 1: rcvd close
linux37: channel 1: input open -> closed
linux37: channel 1: close_read
lsb_init: ** Standard Error - I received this:
Failed in an LSF library call: Unable to open file lsf.conf. Job not s
+ubmitted.
linux37: channel 1: obuf empty
linux37: channel 1: output drain -> closed
linux37: channel 1: close_write
linux37: channel 1: send close
linux37: channel 1: full closed
[download]

Please help me out in this

LD_LIBRARY_PATH: Undefined variable.
LD_LIBRARY_PATH: Undefined variable.
lsb_init:
Failed in an LSF library call: Unable to open file lsf.conf. Job not s
+ubmitted.
[download]

Well, it seems that Net::SSH::Perl is actually working!

The problem now probably lays inside the script and commands you are running at the remote side. Try adding set echo at the beginning of the SHELL block to see what is going on.