diff --git a/data/grid5000/sites/nancy/clusters/grostiti/nodes/grostiti-1.json b/data/grid5000/sites/nancy/clusters/grostiti/nodes/grostiti-1.json
index 83758d0a3e333b748cc3964598ae2c4334f2caa4..6b2bfc132aef6d598ffdac5096d0fdd44a59cdda 100644
--- a/data/grid5000/sites/nancy/clusters/grostiti/nodes/grostiti-1.json
+++ b/data/grid5000/sites/nancy/clusters/grostiti/nodes/grostiti-1.json
@@ -404,7 +404,7 @@
       "mountable": false,
       "mounted": false,
       "name": "ib0",
-      "rate": 10000000000,
+      "rate": 56000000000,
       "vendor": "Mellanox Technologies"
     },
     {
diff --git a/input/grid5000/sites/nancy/clusters/grostiti/nodes/grostiti-1.yaml b/input/grid5000/sites/nancy/clusters/grostiti/nodes/grostiti-1.yaml
index d5b08002dcddb51ddf0bf532a7deefd28e34117e..da1e16a1ca5c53f417eeb80d5a546b06ab64a7fa 100644
--- a/input/grid5000/sites/nancy/clusters/grostiti/nodes/grostiti-1.yaml
+++ b/input/grid5000/sites/nancy/clusters/grostiti/nodes/grostiti-1.yaml
@@ -223,7 +223,7 @@ grostiti-1:
       management: false
       model: MT27500 Family [ConnectX-3]
       name: ib0
-      rate: 10000000000
+      rate: 56000000000
       vendor: Mellanox Technologies
     ib1:
       driver: hfi1