diff --git a/gestion/gen_confs/switchs.py b/gestion/gen_confs/switchs.py
index 1a190b7f..5aaa7ccf 100644
--- a/gestion/gen_confs/switchs.py
+++ b/gestion/gen_confs/switchs.py
@@ -53,7 +53,7 @@ sntp unicast
 ;-------------------------------------------------------- Misc
 console inactivity-timer 30
 ;-------------------------------------------------------- Logs
-logging 10.231.136.7
+logging 10.231.136.12
 ;-------------------------------------------------------- IP du switch
 ip default-gateway 10.231.136.4
 vlan %(vlan_adherent)s
@@ -106,21 +106,31 @@ no web-management
 aaa authentication ssh login public-key none
 aaa authentication ssh enable public-key none
 ip ssh
-ip ssh version 2
 ip authorized-managers 10.231.136.0 255.255.255.0
 ip ssh filetransfer
 ;------------------------------------------------------- Spanning-tree
-spanning-tree protocol-version rstp
+spanning-tree force-version rstp-operation
 ; Config des uplinks
-no spanning-tree %(uplinks)s edge-port
+no spanning-tree %(uplinks)s admin-edge-port
 spanning-tree %(uplinks)s point-to-point-mac true
 spanning-tree %(uplinks)s priority 6
 ; Config des prises adhérent
-spanning-tree %(non_uplinks)s edge-port
+spanning-tree %(non_uplinks)s admin-edge-port
 spanning-tree %(non_uplinks)s point-to-point-mac auto
 spanning-tree %(non_uplinks)s priority 8
 ; On active
 spanning-tree
+;------------------------------------------------------- DHCP Snooping
+dhcp-snooping vlan %(vlan_adherent)s
+dhcp-snooping trust %(uplinks)s
+no dhcp-snooping trust %(non_uplinks)s
+dhcp-snooping authorized-server %(dhcp)s
+; Activation
+dhcp-snooping
+;------------------------------------------------------- Protection contre les boucles
+loop-protect disable-timer 30
+loop-protect transmit-interval 3
+loop-protect %(non_uplinks)s
 ;------------------------------------------------------- Serveurs radius
 radius-server dead-time 2
 radius-server key %(radius_key)s
@@ -143,6 +153,9 @@ exit
     rad_servs = [ '10.231.136.72', '10.231.136.9' ]
     rad_template = "radius-server host %s\n"
 
+    # Serveur DHCP du vlan par défaut
+    dhcp_server = "138.231.136.9"
+
     def __init__(self,truc):
         """ truc est soit :
         * une _liste_ de chambres => reconfig de ces chambres
@@ -269,7 +282,8 @@ exit
         rad = self.rad_template * len(self.rad_servs)
         params = { 'switch' : switch, 'bat' : bat.upper() ,
                    'radius_key' : radius_key ,
-                   'radius-serveurs' : rad[:-1] % tuple(self.rad_servs)}
+                   'radius-serveurs' : rad[:-1] % tuple(self.rad_servs),
+                   'dhcp': self.dhcp_server}
 
         self.aff.cycle()