diff --git a/data/grid5000/sites/luxembourg/network_equipments/gw-luxembourg.json b/data/grid5000/sites/luxembourg/network_equipments/gw-luxembourg.json
index db33d04dafc4311471f3a3ff011c489b1728dff9..a8bd47082163b736835328bf907030b00fdb10c9 100644
--- a/data/grid5000/sites/luxembourg/network_equipments/gw-luxembourg.json
+++ b/data/grid5000/sites/luxembourg/network_equipments/gw-luxembourg.json
@@ -584,39 +584,54 @@
       ],
       "administrative": true
     },
+    "vlan701": {
+      "addresses": [
+        "192.168.192.0/20"
+      ]
+    },
+    "vlan702": {
+      "addresses": [
+        "192.168.208.0/20"
+      ]
+    },
+    "vlan703": {
+      "addresses": [
+        "192.168.224.0/20"
+      ]
+    },
     "vlan704": {
       "addresses": [
-        "10.40.63.254"
+        "10.40.0.0/18"
       ]
     },
     "vlan705": {
       "addresses": [
-        "10.40.127.254"
+        "10.40.64.0/18"
       ]
     },
     "vlan706": {
       "addresses": [
-        "10.40.191.254"
+        "10.40.128.0/18"
       ]
     },
     "vlan707": {
       "addresses": [
-        "10.40.255.254"
+        "10.40.192.0/18"
       ]
     },
     "vlan708": {
       "addresses": [
-        "10.41.63.254"
+        "10.41.0.0/18"
       ]
     },
     "vlan709": {
       "addresses": [
-        "10.41.127.254"
+        "10.41.64.0/18"
       ]
     },
     "vlan720": {
       "addresses": [
-        "10.43.255.254"
+        "10.43.192.0/18"
       ]
     }
   },
diff --git a/generators/input/sites/luxembourg/net-links/gw-luxembourg.yaml b/generators/input/sites/luxembourg/net-links/gw-luxembourg.yaml
index 2326725063682341e2d9408053a58d99cba7f098..2292f2cbf7ec7a551beaa9637f8fed6946803505 100644
--- a/generators/input/sites/luxembourg/net-links/gw-luxembourg.yaml
+++ b/generators/input/sites/luxembourg/net-links/gw-luxembourg.yaml
@@ -8,6 +8,10 @@ gw-luxembourg:
   mtu: 9216
   vlans:
     naming_pattern: Vlan%VLANID%
+    "vlan50":
+      administrative: yes
+      addresses:
+        - 192.168.15.254
     "vlan100":
       administrative: yes
       addresses:
@@ -15,11 +19,7 @@ gw-luxembourg:
     "vlan101":
       administrative: yes
       addresses:
-        - 172.17.191.254
-    "vlan50":
-      administrative: yes
-      addresses:
-        - 192.168.15.254
+        - 172.17.191.254  
     "vlan103":
       administrative: yes
       addresses:
@@ -28,27 +28,36 @@ gw-luxembourg:
       administrative: yes
       addresses:
         - 192.168.4.21
+    "vlan701":
+      addresses:
+        - 192.168.192.0/20
+    "vlan702":
+      addresses:
+        - 192.168.208.0/20
+    "vlan703":
+      addresses:
+        - 192.168.224.0/20
     "vlan704":
       addresses:
-        - 10.40.63.254
+        - 10.40.0.0/18
     "vlan705":
       addresses:
-        - 10.40.127.254
+        - 10.40.64.0/18	
     "vlan706":
       addresses:
-        - 10.40.191.254
+        - 10.40.128.0/18
     "vlan707":
       addresses:
-        - 10.40.255.254
+        - 10.40.192.0/18	
     "vlan708":
       addresses:
-        - 10.41.63.254
+        - 10.41.0.0/18	
     "vlan709":
       addresses:
-        - 10.41.127.254
+        - 10.41.64.0/18
     "vlan720":
       addresses:
-        - 10.43.255.254
+        - 10.43.192.0/18
   routes: {}
 
   linecards: