diff --git a/network/stormshield/snmp/mode/qos.pm b/network/stormshield/snmp/mode/qos.pm
new file mode 100644
index 000000000..19934fb5b
--- /dev/null
+++ b/network/stormshield/snmp/mode/qos.pm
@@ -0,0 +1,254 @@
+#
+# Copyright 2020 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::stormshield::snmp::mode::qos;
+
+use base qw(centreon::plugins::templates::counter);
+
+use strict;
+use warnings;
+use Digest::MD5 qw(md5_hex);
+
+sub custom_qos_output {
+    my ($self, %options) = @_;
+    
+    my ($traffic_value, $traffic_unit) = $self->{perfdata}->change_bytes(value => $self->{result_values}->{traffic}, network => 1);
+    my ($total_value, $total_unit);
+    if (defined($self->{result_values}->{speed}) && $self->{result_values}->{speed} =~ /[0-9]/) {
+        ($total_value, $total_unit) = $self->{perfdata}->change_bytes(value => $self->{result_values}->{speed}, network => 1);
+    }
+   
+    return sprintf(
+        'traffic %s: %s/s (%s on %s)',
+            $self->{result_values}->{label}, 
+            $traffic_value . $traffic_unit,
+            defined($self->{result_values}->{traffic_prct}) ? sprintf('%.2f%%', $self->{result_values}->{traffic_prct}) : '-',
+            defined($total_value) ? $total_value . $total_unit : '-'
+    );
+}
+
+sub custom_qos_calc {
+    my ($self, %options) = @_;
+    
+    $self->{result_values}->{label} = $options{extra_options}->{label_ref};
+    $self->{result_values}->{display} = $options{new_datas}->{$self->{instance} . '_display'};
+    $self->{result_values}->{traffic} = $options{new_datas}->{$self->{instance} . '_traffic_' . $self->{result_values}->{label}};
+
+    if ($options{new_datas}->{$self->{instance} . '_speed_' . $self->{result_values}->{label}} > 0) {
+        $self->{result_values}->{speed} = $options{new_datas}->{$self->{instance} . '_speed_' . $self->{result_values}->{label}};
+        $self->{result_values}->{traffic_prct} = $self->{result_values}->{traffic} * 100 / $self->{result_values}->{speed};
+    } elsif ($options{extra_options}->{type} eq 'percent') {
+        return -10;
+    }
+    return 0;
+}
+
+sub set_counters {
+    my ($self, %options) = @_;
+
+    $self->{maps_counters_type} = [
+        { name => 'qos', type => 1, cb_prefix_output => 'prefix_qos_output', message_multiple => 'All QoS are ok', skipped_code => { -10 => 1 } }
+    ];
+
+    $self->{maps_counters}->{qos} = [
+        { label => 'traffic-in', nlabel => 'qos.traffic.in.bitspersecond', set => {
+                key_values => [ { name => 'traffic_in', per_second => 1 }, { name => 'display' }, { name => 'speed_in' } ],
+                closure_custom_calc => $self->can('custom_qos_calc'), closure_custom_calc_extra_options => { label_ref => 'in', type => 'abs' },
+                closure_custom_output => $self->can('custom_qos_output'),
+                threshold_use => 'traffic',
+                perfdatas => [
+                    { value => 'traffic', template => '%.2f', unit => 'b/s', min => 0, label_extra_instance => 1, instance_use => 'display' }
+                ]
+            }
+        },
+        { label => 'traffic-in-prct', nlabel => 'qos.traffic.in.percentage', display_ok => 0, set => {
+                key_values => [ { name => 'traffic_in', per_second => 1 }, { name => 'display' }, { name => 'speed_in' } ],
+                closure_custom_calc => $self->can('custom_qos_calc'), closure_custom_calc_extra_options => { label_ref => 'in', type => 'percent' },
+                closure_custom_output => $self->can('custom_qos_output'),
+                threshold_use => 'traffic_prct',
+                perfdatas => [
+                    { value => 'traffic_prct', template => '%.2f', unit => '%', min => 0, max => 100, label_extra_instance => 1, instance_use => 'display' }
+                ]
+            }
+        },
+        { label => 'traffic-in-peak', nlabel => 'qos.traffic.in.peak.bitspersecond', set => {
+                key_values => [ { name => 'traffic_in_peak' }, { name => 'display' } ],
+                output_template => 'traffic in peak: %s %s/s',
+                output_change_bytes => 2,
+                perfdatas => [
+                    { template => '%.2f', unit => 'b/s', min => 0, label_extra_instance => 1, instance_use => 'display' }
+                ]
+            }
+        },
+        { label => 'traffic-out', nlabel => 'qos.traffic.out.bitspersecond', set => {
+                key_values => [ { name => 'traffic_out', per_second => 1 }, { name => 'display' }, { name => 'speed_out' } ],
+                closure_custom_calc => $self->can('custom_qos_calc'), closure_custom_calc_extra_options => { label_ref => 'out', type => 'abs' },
+                closure_custom_output => $self->can('custom_qos_output'),
+                threshold_use => 'traffic',
+                perfdatas => [
+                    { value => 'traffic', template => '%.2f', unit => 'b/s', min => 0, label_extra_instance => 1, instance_use => 'display' }
+                ]
+            }
+        },
+        { label => 'traffic-out-prct', nlabel => 'qos.traffic.out.percentage', display_ok => 0, set => {
+                key_values => [ { name => 'traffic_out', per_second => 1 }, { name => 'display' }, { name => 'speed_out' } ],
+                closure_custom_calc => $self->can('custom_qos_calc'), closure_custom_calc_extra_options => { label_ref => 'out', type => 'percent' },
+                closure_custom_output => $self->can('custom_qos_output'),
+                threshold_use => 'traffic_prct',
+                perfdatas => [
+                    { value => 'traffic_prct', template => '%.2f', unit => '%', min => 0, max => 100, label_extra_instance => 1, instance_use => 'display' }
+                ]
+            }
+        },
+        { label => 'traffic-out-peak', nlabel => 'qos.traffic.out.peak.bitspersecond', set => {
+                key_values => [ { name => 'traffic_out_peak' }, { name => 'display' } ],
+                output_template => 'traffic out peak: %s %s/s',
+                output_change_bytes => 2,
+                perfdatas => [
+                    { template => '%.2f', unit => 'b/s', min => 0, label_extra_instance => 1, instance_use => 'display' }
+                ]
+            }
+        },
+    ];
+}
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options, statefile => 1, force_new_perfdata => 1);
+    bless $self, $class;
+
+    $options{options}->add_options(arguments => { 
+        'filter-name:s' => { name => 'filter_name' },
+        'speed-in:s'    => { name => 'speed_in' },
+        'speed-out:s'   => { name => 'speed_out' }
+    });
+
+    return $self;
+}
+
+sub prefix_qos_output {
+    my ($self, %options) = @_;
+    
+    return "QoS '" . $options{instance_value}->{display} . "' ";
+}
+
+my $mapping = {
+    traffic_in       => { oid => '.1.3.6.1.4.1.11256.1.15.1.1.4' }, # snsQosEntryInCounter    
+    traffic_in_peak  => { oid => '.1.3.6.1.4.1.11256.1.15.1.1.5' }, # snsQosEntryInMaxPeak
+    speed_in         => { oid => '.1.3.6.1.4.1.11256.1.15.1.1.6' }, # snsQosEntryInSpeedLimit
+    traffic_out      => { oid => '.1.3.6.1.4.1.11256.1.15.1.1.7' }, # snsQosEntryOutCounter    
+    traffic_out_peak => { oid => '.1.3.6.1.4.1.11256.1.15.1.1.8' }, # snsQosEntryOutMaxPeak
+    speed_out        => { oid => '.1.3.6.1.4.1.11256.1.15.1.1.9' }  # snsQosEntryOutSpeedLimit
+};
+my $oid_snsQosEntryName = '.1.3.6.1.4.1.11256.1.15.1.1.2';
+
+
+sub manage_selection {
+    my ($self, %options) = @_;
+
+    if ($options{snmp}->is_snmpv1()) {
+        $self->{output}->add_option_msg(short_msg => 'Need to use SNMP v2c or v3.');
+        $self->{output}->option_exit();
+    }
+
+    my $snmp_result = $options{snmp}->get_table(
+        oid => $oid_snsQosEntryName,
+        nothing_quit => 1
+    );
+
+    $self->{qos} = {};
+    foreach (keys %$snmp_result) {
+        /^$oid_snsQosEntryName\.(.*)$/;
+        my $instance = $1;
+
+        my $name = $snmp_result->{$_};
+        if (defined($self->{option_results}->{filter_name}) && $self->{option_results}->{filter_name} ne '' &&
+            $name !~ /$self->{option_results}->{filter_name}/) {
+            $self->{output}->output_add(long_msg => "skipping '" . $name . "': no matching filter.", debug => 1);
+            next;
+        }
+
+        $self->{qos}->{$instance} = { display => $name };
+    }
+
+    if (scalar(keys %{$self->{qos}}) <= 0) {
+        $self->{output}->add_option_msg(short_msg => "No QoS found.");
+        $self->{output}->option_exit();
+    }
+
+    $options{snmp}->load(oids => [
+            map($_->{oid}, values(%$mapping))
+        ],
+        instances => [keys %{$self->{qos}}],
+        instance_regexp => '^(.*)$'
+    );
+    $snmp_result = $options{snmp}->get_leef(nothing_quit => 1);
+
+    foreach (keys %{$self->{qos}}) {
+        my $result = $options{snmp}->map_instance(mapping => $mapping, results => $snmp_result, instance => $_);
+
+        foreach (('in', 'out')) {
+            $result->{'speed_' . $_} = defined($self->{option_results}->{'speed_' . $_}) && $self->{option_results}->{'speed_' . $_} =~ /(\d+)/ ?
+                ($1 * 1000 * 1000): (defined($result->{'speed_' . $_}) ? ($result->{'speed_' . $_} * 1024 * 1000) : 0);
+            $result->{'traffic_' . $_} *= 1000;
+            $result->{'traffic_' . $_ . '_peak'} *= 1000;
+        }
+        $self->{qos}->{$_} = {
+            %{$self->{qos}->{$_}},
+            %$result
+        };
+    }
+
+    $self->{cache_name} = 'stormshield_' . $self->{mode} . '_' . $options{snmp}->get_hostname()  . '_' . $options{snmp}->get_port() . '_' .
+        (defined($self->{option_results}->{filter_counters}) ? md5_hex($self->{option_results}->{filter_counters}) : md5_hex('all')) . '_' .
+        (defined($self->{option_results}->{filter_name}) ? md5_hex($self->{option_results}->{filter_name}) : md5_hex('all'));
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check QoS usage.
+
+=over 8
+
+=item B<--filter-name>
+
+Filter by QoS name (can be a regexp).
+
+=item B<--speed-in>
+
+Set interface speed for incoming traffic (in Mb).
+
+=item B<--speed-out>
+
+Set interface speed for outgoing traffic (in Mb).
+
+=item B<--warning-*>  B<--critical-*>
+
+Thresholds.
+Can be: 'traffic-in', 'traffic-in-prct', 'traffic-in-peak',
+'traffic-out', 'traffic-out-prct', 'traffic-out-peak'.
+
+=back
+
+=cut
diff --git a/network/stormshield/snmp/plugin.pm b/network/stormshield/snmp/plugin.pm
index b06f48911..28c31e997 100644
--- a/network/stormshield/snmp/plugin.pm
+++ b/network/stormshield/snmp/plugin.pm
@@ -30,7 +30,7 @@ sub new {
     bless $self, $class;
 
     $self->{version} = '1.0';
-    %{$self->{modes}} = (
+    $self->{modes} = {
         'cpu'               => 'snmp_standard::mode::cpu',
         'cpu-detailed'      => 'snmp_standard::mode::cpudetailed',
         'connections'       => 'network::stormshield::snmp::mode::connections',
@@ -39,10 +39,11 @@ sub new {
         'load'              => 'snmp_standard::mode::loadaverage',
         'ha-nodes'          => 'network::stormshield::snmp::mode::hanodes',
         'memory'            => 'os::freebsd::snmp::mode::memory',
+        'qos'               => 'network::stormshield::snmp::mode::qos',
         'storage'           => 'snmp_standard::mode::storage',
         'swap'              => 'snmp_standard::mode::swap',
         'vpn-status'        => 'network::stormshield::snmp::mode::vpnstatus',
-    );
+    };
 
     return $self;
 }