diff --git a/network/citrix/netscaler/common/mode/connections.pm b/network/citrix/netscaler/common/mode/connections.pm
new file mode 100644
index 000000000..888099a3a
--- /dev/null
+++ b/network/citrix/netscaler/common/mode/connections.pm
@@ -0,0 +1,153 @@
+#
+# Copyright 2015 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package network::citrix::netscaler::common::mode::connections;
+
+use base qw(centreon::plugins::mode);
+
+use strict;
+use warnings;
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
+    bless $self, $class;
+    
+    $self->{version} = '1.0';
+    $options{options}->add_options(arguments =>
+                                {
+                                  "warning-server:s"     => { name => 'warning_server' },
+                                  "critical-server:s"    => { name => 'critical_server' },
+                                  "warning-active:s"     => { name => 'warning_active' },
+                                  "critical-active:s"    => { name => 'critical_active' },
+                                  "warning-client:s"     => { name => 'warning_client' },
+                                  "critical-client:s"    => { name => 'critical_client' },
+                                });
+    return $self;
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+    $self->SUPER::init(%options);
+    
+    if (($self->{perfdata}->threshold_validate(label => 'warning-server', value => $self->{option_results}->{warning_server})) == 0) {
+       $self->{output}->add_option_msg(short_msg => "Wrong warning-server threshold '" . $self->{option_results}->{warning_server} . "'.");
+       $self->{output}->option_exit();
+    }
+    if (($self->{perfdata}->threshold_validate(label => 'critical-server', value => $self->{option_results}->{critical_server})) == 0) {
+       $self->{output}->add_option_msg(short_msg => "Wrong critical-server threshold '" . $self->{option_results}->{critical_server} . "'.");
+       $self->{output}->option_exit();
+    }
+    if (($self->{perfdata}->threshold_validate(label => 'warning-active', value => $self->{option_results}->{warning_active})) == 0) {
+       $self->{output}->add_option_msg(short_msg => "Wrong warning-active threshold '" . $self->{option_results}->{warning_active} . "'.");
+       $self->{output}->option_exit();
+    }
+    if (($self->{perfdata}->threshold_validate(label => 'critical-active', value => $self->{option_results}->{critical_active})) == 0) {
+       $self->{output}->add_option_msg(short_msg => "Wrong critical-active threshold '" . $self->{option_results}->{critical_active} . "'.");
+       $self->{output}->option_exit();
+    }
+    if (($self->{perfdata}->threshold_validate(label => 'warning-client', value => $self->{option_results}->{warning_client})) == 0) {
+       $self->{output}->add_option_msg(short_msg => "Wrong warning-client threshold '" . $self->{option_results}->{warning_client} . "'.");
+       $self->{output}->option_exit();
+    }
+    if (($self->{perfdata}->threshold_validate(label => 'critical-client', value => $self->{option_results}->{critical_client})) == 0) {
+       $self->{output}->add_option_msg(short_msg => "Wrong critical-client threshold '" . $self->{option_results}->{critical_client} . "'.");
+       $self->{output}->option_exit();
+    }
+}
+
+sub run {
+    my ($self, %options) = @_;
+    # $options{snmp} = snmp object
+    $self->{snmp} = $options{snmp};
+
+    my $oid_tcpCurServerConn = '.1.3.6.1.4.1.5951.4.1.1.46.1.0';
+    my $oid_tcpCurClientConn = '.1.3.6.1.4.1.5951.4.1.1.46.2.0'; 
+    my $oid_tcpActiveServerConn = '.1.3.6.1.4.1.5951.4.1.1.46.8.0';
+    my $result = $self->{snmp}->get_leef(oids => [$oid_tcpCurServerConn, $oid_tcpCurClientConn, $oid_tcpActiveServerConn ], nothing_quit => 1);
+    
+    my $exit_server = $self->{perfdata}->threshold_check(value => $result->{$oid_tcpCurServerConn},
+                                                  threshold => [ { label => 'critical-server', exit_litteral => 'critical' }, { label => 'warning-server', exit_litteral => 'warning' } ]);
+    my $exit_client = $self->{perfdata}->threshold_check(value => $result->{$oid_tcpCurClientConn},
+                                                  threshold => [ { label => 'critical-client', exit_litteral => 'critical' }, { label => 'warning-client', exit_litteral => 'warning' } ]);
+    my $exit_active = $self->{perfdata}->threshold_check(value => $result->{$oid_tcpActiveServerConn},
+                                                  threshold => [ { label => 'critical-active', exit_litteral => 'critical' }, { label => 'warning-active', exit_litteral => 'warning' } ]);
+    my $exit = $self->{output}->get_most_critical(status => [$exit_server, $exit_client, $exit_active]);
+
+    $self->{output}->output_add(severity => $exit,
+                                short_msg => sprintf("Connections: Client=%s Server=%s (activeServer=%s)",
+                                                     $result->{$oid_tcpCurClientConn}, $result->{$oid_tcpCurServerConn}, $result->{$oid_tcpActiveServerConn}));
+
+    $self->{output}->perfdata_add(label => "client", unit => 'con',
+                                  value => $result->{$oid_tcpCurClientConn},
+                                  warning => $self->{option_results}->{warning_client},
+                                  critical => $self->{option_results}->{critical_client},
+                                  min => 0);
+    $self->{output}->perfdata_add(label => "server", unit => 'con',
+                                  value => $result->{$oid_tcpCurServerConn},
+                                  warning => $self->{option_results}->{warning_server},
+                                  critical => $self->{option_results}->{critical_server},
+                                  min => 0);
+    $self->{output}->perfdata_add(label => "activeServer", unit => 'con',
+                                  value => $result->{$oid_tcpActiveServerConn},
+                                  warning => $self->{option_results}->{warning_active},
+                                  critical => $self->{option_results}->{critical_active},
+                                  min => 0);
+    $self->{output}->display();
+    $self->{output}->exit();
+}
+    
+1;
+
+__END__
+
+=head1 MODE
+
+Check connections usage (Client, Server, ActiveServer) (NS-ROOT-MIBv2).
+
+=over 8
+
+=item B<--warning-server>
+
+Warning on number of server TCP connections 
+
+=item B<--critical-server>
+
+Critical on number of server TCP connections
+
+=item B<--warning-client>
+
+Warning on number of client TCP connections
+
+=item B<--critical-client>
+
+Critical on number of client TCP connections
+
+=item B<--warning-active>
+
+Warning on number of server Active TCP connections
+
+=item B<--critical-active>
+
+Critical on number of server Active TCP connections
+
+=back
+
+=cut