diff --git a/data/grid5000/sites/nancy/clusters/graphene/nodes/graphene-73.json b/data/grid5000/sites/nancy/clusters/graphene/nodes/graphene-73.json
index 880772d6dccee18079a267b034e02bd70cb32210..6b10b3cb6b171c1ddb5856c03d8f1ec294b4958e 100644
--- a/data/grid5000/sites/nancy/clusters/graphene/nodes/graphene-73.json
+++ b/data/grid5000/sites/nancy/clusters/graphene/nodes/graphene-73.json
@@ -117,6 +117,7 @@
       "name": "ib0",
       "network_address": "graphene-73-ib0.nancy.grid5000.fr",
       "rate": 20000000000,
+      "switch": "sgrapheneib",
       "vendor": "Mellanox Technologies"
     },
     {
diff --git a/data/grid5000/sites/nancy/clusters/graphene/nodes/graphene-84.json b/data/grid5000/sites/nancy/clusters/graphene/nodes/graphene-84.json
index 79b4b55ab90ff2abf454544b7ad0821eb57d680b..166ea2aebfd8319e22cb7aa2cb7f177f9d463669 100644
--- a/data/grid5000/sites/nancy/clusters/graphene/nodes/graphene-84.json
+++ b/data/grid5000/sites/nancy/clusters/graphene/nodes/graphene-84.json
@@ -117,6 +117,7 @@
       "name": "ib0",
       "network_address": "graphene-84-ib0.nancy.grid5000.fr",
       "rate": 20000000000,
+      "switch": "sgrapheneib",
       "vendor": "Mellanox Technologies"
     },
     {
diff --git a/input/grid5000/sites/nancy/clusters/graphene/graphene_extra.yaml b/input/grid5000/sites/nancy/clusters/graphene/graphene_extra.yaml
index d248bb55ada4de157ec6e95f311a922df43511e8..bc83fd02bf992fcaf5e3349391ce841222888ad0 100644
--- a/input/grid5000/sites/nancy/clusters/graphene/graphene_extra.yaml
+++ b/input/grid5000/sites/nancy/clusters/graphene/graphene_extra.yaml
@@ -951,6 +951,8 @@ nodes:
       eth0:
         switch: sgraphene2
         switch_port: Gi1/0/34
+      ib0:
+        switch: sgrapheneib
       bmc:
         switch: sgraphene2-ipmi
         switch_port: 1/0/18
@@ -1072,6 +1074,8 @@ nodes:
       eth0:
         switch: sgraphene3
         switch_port: Gi1/0/9
+      ib0:
+        switch: sgrapheneib
       bmc:
         switch: sgraphene3-ipmi
         switch_port: 1/0/34