diff --git a/preferences/migrations/0015_optionaltopologie_radius_general_policy.py b/preferences/migrations/0015_optionaltopologie_radius_general_policy.py
new file mode 100644
index 00000000..d07ac378
--- /dev/null
+++ b/preferences/migrations/0015_optionaltopologie_radius_general_policy.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.7 on 2017-09-02 13:16
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('preferences', '0014_generaloption_email_from'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='optionaltopologie',
+            name='radius_general_policy',
+            field=models.CharField(choices=[('MACHINE', 'Sur le vlan de la plage ip machine'), ('DEFINED', 'Prédéfini')], default='DEFINED', max_length=32),
+        ),
+    ]
diff --git a/preferences/migrations/0016_auto_20170902_1520.py b/preferences/migrations/0016_auto_20170902_1520.py
new file mode 100644
index 00000000..1779d712
--- /dev/null
+++ b/preferences/migrations/0016_auto_20170902_1520.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.7 on 2017-09-02 13:20
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('preferences', '0015_optionaltopologie_radius_general_policy'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='optionaltopologie',
+            name='radius_general_policy',
+            field=models.CharField(choices=[('MACHINE', 'Sur le vlan de la plage ip machine'), ('DEFINED', 'Prédéfini dans "Vlan où placer les machines après acceptation RADIUS"')], default='DEFINED', max_length=32),
+        ),
+    ]
diff --git a/preferences/models.py b/preferences/models.py
index 001b7c27..92822190 100644
--- a/preferences/models.py
+++ b/preferences/models.py
@@ -46,7 +46,14 @@ class OptionalMachine(models.Model):
 
 class OptionalTopologie(models.Model):
     PRETTY_NAME = "Options topologie"
+    MACHINE = 'MACHINE'
+    DEFINED = 'DEFINED'
+    CHOICE_RADIUS = (
+            (MACHINE, 'Sur le vlan de la plage ip machine'),
+            (DEFINED, 'Prédéfini dans "Vlan où placer les machines après acceptation RADIUS"'),
+    )
 
+    radius_general_policy = models.CharField(max_length=32, choices=CHOICE_RADIUS, default='DEFINED')
     vlan_decision_ok = models.OneToOneField('machines.Vlan', on_delete=models.PROTECT, related_name='decision_ok', blank=True, null=True)
     vlan_decision_nok = models.OneToOneField('machines.Vlan', on_delete=models.PROTECT, related_name='decision_nok', blank=True, null=True)
 
diff --git a/preferences/templates/preferences/display_preferences.html b/preferences/templates/preferences/display_preferences.html
index 96d3a910..394a4714 100644
--- a/preferences/templates/preferences/display_preferences.html
+++ b/preferences/templates/preferences/display_preferences.html
@@ -80,6 +80,12 @@ with this program; if not, write to the Free Software Foundation, Inc.,
     <p>
     </p>
     <table class="table table-striped">
+        <tr>
+            <th>Politique générale de placement de vlan</th>
+            <td>{{ topologieoptions.radius_general_policy }}</td>
+	    <th> Ce réglage défini la politique vlan après acceptation radius : soit sur le vlan de la plage d'ip de la machine, soit sur un vlan prédéfini dans "Vlan où placer les machines après acceptation RADIUS"</th>
+            <td></td>
+        </tr>
         <tr>
             <th>Vlan où placer les machines après acceptation RADIUS</th>
             <td>{{ topologieoptions.vlan_decision_ok }}</td>