diff --git a/centreon-plugins/network/mrv/optiswitch/snmp/mode/memory.pm b/centreon-plugins/network/mrv/optiswitch/snmp/mode/memory.pm
new file mode 100644
index 000000000..e835137a3
--- /dev/null
+++ b/centreon-plugins/network/mrv/optiswitch/snmp/mode/memory.pm
@@ -0,0 +1,85 @@
+#
+# Copyright 2019 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::mrv::optiswitch::snmp::mode::memory;
+
+use base qw(snmp_standard::mode::memory);
+
+use strict;
+use warnings;
+
+sub custom_usage_calc {
+    my ($self, %options) = @_;
+
+    $self->{result_values}->{total} = $options{new_datas}->{$self->{instance} . '_memTotalReal'};
+    $self->{result_values}->{free} = $options{new_datas}->{$self->{instance} . '_memTotalFree'};
+    $self->{result_values}->{buffer} = $options{new_datas}->{$self->{instance} . '_memBuffer'};
+    $self->{result_values}->{cached} = $options{new_datas}->{$self->{instance} . '_memCached'};
+
+    if ($self->{result_values}->{total} != 0) {
+        $self->{result_values}->{physical_used} = $self->{result_values}->{total} - $self->{result_values}->{free};
+        $self->{result_values}->{used} = $self->{result_values}->{physical_used} - $self->{result_values}->{buffer} - $self->{result_values}->{cached};
+        $self->{result_values}->{prct_used} = $self->{result_values}->{used} * 100 / $self->{result_values}->{total};
+    } else {
+        $self->{result_values}->{used} = '0';
+        $self->{result_values}->{prct_used} = '0';
+    }
+
+    return 0;
+}
+
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check memory usage (UCD-SNMP-MIB).
+
+=over 8
+
+=item B<--units>
+
+Units of thresholds (Default: '%') ('%', 'absolute').
+
+=item B<--free>
+
+Thresholds are on free space left.
+
+=item B<--swap>
+
+Check swap also.
+
+=item B<--warning-*>
+
+Threshold warning.
+Can be: 'usage', 'swap', 'buffer' (absolute),
+'cached' (absolute), 'shared' (absolute).
+
+=item B<--critical-*>
+
+Threshold critical.
+Can be: 'usage', 'swap', 'buffer' (absolute),
+'cached' (absolute), 'shared' (absolute).
+
+=back
+
+=cut
diff --git a/centreon-plugins/network/mrv/optiswitch/snmp/plugin.pm b/centreon-plugins/network/mrv/optiswitch/snmp/plugin.pm
index 5937816a5..8d385efff 100644
--- a/centreon-plugins/network/mrv/optiswitch/snmp/plugin.pm
+++ b/centreon-plugins/network/mrv/optiswitch/snmp/plugin.pm
@@ -31,11 +31,14 @@ sub new {
 
     $self->{version} = '1.0';
     %{$self->{modes}} = (
-                         'environment'      => 'network::mrv::optiswitch::snmp::mode::environment',
-                         'interfaces'       => 'network::mrv::optiswitch::snmp::mode::interfaces',
-                         'list-interfaces'  => 'network::mrv::optiswitch::snmp::mode::listinterfaces',
-                         'uptime'           => 'snmp_standard::mode::uptime',
-                        );
+        'cpu-detailed'      => 'snmp_standard::mode::cpudetailed',
+        'environment'       => 'network::mrv::optiswitch::snmp::mode::environment',
+        'interfaces'        => 'network::mrv::optiswitch::snmp::mode::interfaces',
+        'list-interfaces'   => 'network::mrv::optiswitch::snmp::mode::listinterfaces',
+        'load'              => 'snmp_standard::mode::loadaverage',
+        'memory'            => 'network::mrv::optiswitch::snmp::mode::memory',
+        'uptime'            => 'snmp_standard::mode::uptime',
+    );
 
     return $self;
 }