#! /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, protocol=> '2,1');

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

## This stderr and stdout will help to findout whether the commands are executing or not

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

# This trigger works perfectly 

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

## 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-with-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 submitted.
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