diff --git a/flake.lock b/flake.lock
index d317923..fca2a23 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,5 +1,26 @@
 {
   "nodes": {
+    "devshell": {
+      "inputs": {
+        "nixpkgs": [
+          "nix-topology",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1728330715,
+        "narHash": "sha256-xRJ2nPOXb//u1jaBnDP56M7v5ldavjbtR6lfGqSvcKg=",
+        "owner": "numtide",
+        "repo": "devshell",
+        "rev": "dd6b80932022cea34a019e2bb32f6fa9e494dfef",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "devshell",
+        "type": "github"
+      }
+    },
     "disko": {
       "inputs": {
         "nixpkgs": [
@@ -21,6 +42,40 @@
         "type": "github"
       }
     },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1726560853,
+        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "gergle": {
       "inputs": {
         "nixpkgs": [
@@ -42,6 +97,28 @@
         "url": "https://git.pvv.ntnu.no/Grzegorz/gergle.git"
       }
     },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "nix-topology",
+          "pre-commit-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
     "greg-ng": {
       "inputs": {
         "nixpkgs": [
@@ -170,6 +247,30 @@
         "url": "https://git.pvv.ntnu.no/Drift/nix-gitea-themes.git"
       }
     },
+    "nix-topology": {
+      "inputs": {
+        "devshell": "devshell",
+        "flake-utils": "flake-utils",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "pre-commit-hooks": "pre-commit-hooks"
+      },
+      "locked": {
+        "lastModified": 1765969653,
+        "narHash": "sha256-qVpQxyvdByeDfb+d+jhbyNna2Ie+w85iHpt4Qu0rv/E=",
+        "owner": "oddlama",
+        "repo": "nix-topology",
+        "rev": "0ed73e5a1b65eb8ed388d070ebe8dedb9182f466",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oddlama",
+        "ref": "main",
+        "repo": "nix-topology",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1764806471,
@@ -196,6 +297,33 @@
         "url": "https://nixos.org/channels/nixos-unstable-small/nixexprs.tar.xz"
       }
     },
+    "pre-commit-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nix-topology",
+          "nixpkgs"
+        ],
+        "nixpkgs-stable": [
+          "nix-topology",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1730797577,
+        "narHash": "sha256-SrID5yVpyUfknUTGWgYkTyvdr9J1LxUym4om3SVGPkg=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "1864030ed24a2b8b4e4d386a5eeaf0c5369e50a9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
     "pvv-calendar-bot": {
       "inputs": {
         "nixpkgs": [
@@ -248,6 +376,7 @@
         "minecraft-heatmap": "minecraft-heatmap",
         "minecraft-kartverket": "minecraft-kartverket",
         "nix-gitea-themes": "nix-gitea-themes",
+        "nix-topology": "nix-topology",
         "nixpkgs": "nixpkgs",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "pvv-calendar-bot": "pvv-calendar-bot",
@@ -317,6 +446,21 @@
         "repo": "sops-nix",
         "type": "github"
       }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index 8d95e54..d2431b8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -11,6 +11,9 @@
     disko.url = "github:nix-community/disko/v1.11.0";
     disko.inputs.nixpkgs.follows = "nixpkgs";
 
+    nix-topology.url = "github:oddlama/nix-topology/main";
+    nix-topology.inputs.nixpkgs.follows = "nixpkgs";
+
     pvv-nettsiden.url = "git+https://git.pvv.ntnu.no/Projects/nettsiden.git?ref=main";
     pvv-nettsiden.inputs.nixpkgs.follows = "nixpkgs";
 
@@ -90,6 +93,7 @@
           modules = [
             configurationPath
             sops-nix.nixosModules.sops
+            inputs.nix-topology.nixosModules.default
           ] ++ extraArgs.modules or [];
 
           pkgs = import nixpkgs {
@@ -249,5 +253,18 @@
       // lib.genAttrs allMachines
         (machine: self.nixosConfigurations.${machine}.config.system.build.toplevel);
     };
+
+    topology.x86_64-linux = import inputs.nix-topology {
+      pkgs = import nixpkgs {
+        system = "x86_64-linux";
+        overlays = [inputs.nix-topology.overlays.default];
+      }; # Only this package set must include nix-topology.overlays.default
+      modules = [
+        # Your own file to define global topology. Works in principle like a nixos module but uses different options.
+        ./topology.nix
+        # Inline module to inform topology of your existing NixOS hosts.
+        { nixosConfigurations = self.nixosConfigurations; }
+      ];
+    };
   };
 }
diff --git a/topology.nix b/topology.nix
new file mode 100644
index 0000000..a2833e0
--- /dev/null
+++ b/topology.nix
@@ -0,0 +1,120 @@
+{ config, ... }:
+let
+  inherit
+    (config.lib.topology)
+    mkInternet
+    mkRouter
+    mkSwitch
+    mkDevice
+    mkConnection
+    mkConnectionRev;
+  values = import ./values.nix;
+in {
+
+### Networks
+
+  networks.pvv = {
+    name = "PVV Network";
+    cidrv4 = values.ipv4-space;
+    cidrv6 = values.ipv6-space;
+  };
+
+  networks.site-vpn = {
+    name = "OpenVPN Site to Site";
+    style = {
+      primaryColor = "#9dd68d";
+      secondaryColor = null;
+      pattern = "dashed";
+    };
+  };
+
+  networks.ntnu = {
+    name = "NTNU";
+  };
+
+  nodes.internet = mkInternet {
+    connections = mkConnection "ntnu" "wan1";
+  };
+
+  nodes.ntnu = mkRouter "NTNU" {
+    interfaceGroups = [ ["wan1"] ["eth1" "eth2" "eth3"] ];
+    connections.eth1 = mkConnection "ntnu-pvv-router" "wan1";
+    connections.eth2 = mkConnection "ntnu-veggen" "wan1";
+    connections.eth3 = mkConnection "stackit" "*";
+    interfaces.eth1.network = "ntnu";
+  };
+
+### Brus
+
+  nodes.ntnu-pvv-router = mkRouter "NTNU PVV Gateway" {
+    interfaceGroups = [ ["wan1"] ["eth1"] ];
+    connections.eth1 = mkConnection "brus-switch" "eth1";
+    interfaces.eth1.network = "pvv";
+  };
+
+  nodes.brus-switch = mkSwitch "Brus Switch" {
+    interfaceGroups = [ ["eth1" "eth2" "eth3" "eth4" "eth5" "eth6" "eth7"] ];
+    connections.eth2 = mkConnection "bekkalokk" "enp2s0";
+    connections.eth3 = mkConnection "bicep" "enp6s0f0";
+    connections.eth4 = mkConnection "buskerud" "enp3s0f0";
+    connections.eth5 = mkConnection "knutsen" "eth1";
+    connections.eth7 = mkConnection "joshua" "eth1";
+  };
+
+  nodes.knutsen = mkRouter "knutsen" {
+    interfaceGroups = [ ["eth1"] ["eth2"] ["vpn1"] ];
+    connections.eth2 = mkConnectionRev "brus-switch" "eth6";
+    # connections.vpn1 = mkConnection "ludvigsen" "vpn1";
+    interfaces.vpn1.network = "site-vpn";
+    interfaces.vpn1.virtual = true;
+  };
+
+  nodes.joshua = mkDevice "joshua" {
+    interfaceGroups = [ ["eth1"] ];
+  };
+
+  nodes.shark = {
+    guestType = "proxmox";
+    parent = config.nodes.joshua.id;
+  };
+
+
+### PVV
+
+  nodes.ntnu-veggen = mkRouter "NTNU-Veggen" {
+    interfaceGroups = [ ["wan1"] ["eth1"] ];
+    connections.eth1 = mkConnection "ludvigsen" "eth1";
+  };
+
+  nodes.ludvigsen = mkRouter "ludvigsen" {
+    interfaceGroups = [ ["eth1"] ["eth2"] ["vpn1"] ];
+    connections.eth2 = mkConnection "pvv-switch" "eth1";
+    interfaces.vpn1.network = "site-vpn";
+    interfaces.vpn1.virtual = true;
+    interfaces.eth1.network = "ntnu";
+    interfaces.eth2.network = "pvv";
+  };
+
+  nodes.pvv-switch = mkSwitch "PVV Switch (Terminalrommet)" {
+    interfaceGroups = [ ["eth1" "eth2" "eth3"] ];
+    connections.eth2 = mkConnection "brzeczyszczykiewicz" "eno1";
+    connections.eth3 = mkConnection "georg" "eno1";
+  };
+
+
+### Openstack
+
+  nodes.stackit = mkDevice "stackit" {
+    interfaceGroups = [ ["*"] ];
+  };
+
+  nodes.ildkule = {
+    guestType = "openstack";
+    parent = config.nodes.stackit.id;
+  };
+  nodes.bob = {
+    guestType = "openstack";
+    parent = config.nodes.stackit.id;
+  };
+
+}