diff --git a/dev/input/grid5000/sites/nancy/networks/sgraphene1.yaml b/dev/input/grid5000/sites/nancy/networks/sgraphene1.yaml
index c276713c79edefbb81277a0747b1a3d78498519b..cc617db0ebb4af9b8ca841553e779da860a12d9d 100644
--- a/dev/input/grid5000/sites/nancy/networks/sgraphene1.yaml
+++ b/dev/input/grid5000/sites/nancy/networks/sgraphene1.yaml
@@ -1,6 +1,6 @@
 ---
 sgraphene1:
-  model: 3com 451000000000
+  model: 3com 4510G
   kind: switch
   site: nancy
   snmp_community: public
diff --git a/dev/input/grid5000/sites/nancy/networks/sgraphene2.yaml b/dev/input/grid5000/sites/nancy/networks/sgraphene2.yaml
index f117774762849768d884e5776658244517709b47..63ce18d6c8464bb6279fd0049eab1dfe7c28b9ab 100644
--- a/dev/input/grid5000/sites/nancy/networks/sgraphene2.yaml
+++ b/dev/input/grid5000/sites/nancy/networks/sgraphene2.yaml
@@ -1,6 +1,6 @@
 ---
 sgraphene2:
-  model: 3com 451000000000
+  model: 3com 4510G
   kind: switch
   site: nancy
   snmp_community: public
diff --git a/dev/input/grid5000/sites/nancy/networks/sgraphene3.yaml b/dev/input/grid5000/sites/nancy/networks/sgraphene3.yaml
index 99a560cebe8d85ed8b899e627ac9916842e100ac..7f09f103f0920f99b5630ae817c9c4acee8ac0b1 100644
--- a/dev/input/grid5000/sites/nancy/networks/sgraphene3.yaml
+++ b/dev/input/grid5000/sites/nancy/networks/sgraphene3.yaml
@@ -1,6 +1,6 @@
 ---
 sgraphene3:
-  model: 3com 451000000000
+  model: 3com 4510G
   kind: switch
   site: nancy
   snmp_community: public
diff --git a/dev/input/grid5000/sites/nancy/networks/sgraphene4.yaml b/dev/input/grid5000/sites/nancy/networks/sgraphene4.yaml
index 68b8a3abc027f610c36f254bbca7a684de3001a8..f81db33d88b5f368653e79638f77a32e42bd7f04 100644
--- a/dev/input/grid5000/sites/nancy/networks/sgraphene4.yaml
+++ b/dev/input/grid5000/sites/nancy/networks/sgraphene4.yaml
@@ -1,6 +1,6 @@
 ---
 sgraphene4:
-  model: 3com 451000000000
+  model: 3com 4510G
   kind: switch
   site: nancy
   snmp_community: public
diff --git a/dev/input/grid5000/sites/rennes/networks/c6509.yaml b/dev/input/grid5000/sites/rennes/networks/c6509.yaml
index 9872e781dedbb702280622ae19be477a8530fbed..11bd7f05e9f9806a9f19be75f4b5668aa1db042c 100644
--- a/dev/input/grid5000/sites/rennes/networks/c6509.yaml
+++ b/dev/input/grid5000/sites/rennes/networks/c6509.yaml
@@ -13,7 +13,7 @@ c6509:
       snmp_pattern: TenGigabitEthernet%LINECARD%/%PORT%
       rate: 10000000000
       backplane_bps: 40000000000
-      model: WS-X6704-1000000000E
+      model: WS-X6704-10GE
       ports:
         2:
           uid: gw-rennes