diff --git a/config/net/serv.nix b/config/net/serv.nix
index 611ef92..47db3e7 100644
--- a/config/net/serv.nix
+++ b/config/net/serv.nix
@@ -185,5 +185,11 @@
     stats = makeContainer {
       interfaces.serv.hwaddr = "0A:14:48:01:15:00";
     };
+
+    hydra = {
+      role = "server";
+      model = "nixos";
+      interfaces.serv.type = "phys";
+    };
   };
 }
diff --git a/config/switch.nix b/config/switch.nix
index b1398f0..65a6d7a 100644
--- a/config/switch.nix
+++ b/config/switch.nix
@@ -57,8 +57,6 @@
         mgmt.ports = [ "g1" ];
         serv.ports = [
           "g22"
-          # hydra
-          "g47"
         ];
         # server1 had g46,g47,g48 too but this switch has too few
         # port-channel groups
@@ -75,15 +73,15 @@
           group = "8";
           ports = [ "g5" "g6" "g7" "g8" ];
         };
-        server7 = {
+        hydra = {
           group = "7";
+          trunk = false;
           ports = [ "g9" "g11" "g14" "g15" ];
         };
-        server8 = {
+        server10 = {
           group = "5";
-          ports = [ "g35" "g36" "g37" "g13" ];
+          ports = [ "g13" "g35" "g36" "g37" ];
         };
-        server10.ports = [ "g48" ];
         switch-b2 = {
           group = "3";
           ports = [ "g25" "g26" "g27" "g28" ];