diff --git a/connection_diagram.d2 b/connection_diagram.d2
new file mode 100644
index 0000000..43b27e3
--- /dev/null
+++ b/connection_diagram.d2
@@ -0,0 +1,33 @@
+Linux Host: {
+  width: 500
+}
+
+Internet: {
+  shape: cloud
+}
+
+Internet -- Linux Host: {
+  target-arrowhead.label: "enp1s0"
+  label: To operate the linux host testing the EX4100-F behavior
+}
+
+EX4100-F: {
+  width: 500
+}
+
+Linux Host -- EX4100-F: {
+  label: "Cat 6 cable"
+  target-arrowhead.label: "Mgmt"
+  source-arrowhead.label: "enp3s0"
+}
+
+Linux Host -- EX4100-F: {
+  label: "Cat 6 cable"
+  target-arrowhead.label: "Port 44"
+  source-arrowhead.label: "enp2s0"
+}
+Linux Host -- EX4100-F: {
+  label: "10G DAC"
+  target-arrowhead.label: "Uplink0"
+  source-arrowhead.label: "enp5s0d1"
+}
diff --git a/shell.nix b/shell.nix
index c3d10c9..6f95095 100644
--- a/shell.nix
+++ b/shell.nix
@@ -2,6 +2,7 @@
 pkgs.mkShell {
   name = "junos-testing";
   packages = [
+    pkgs.d2
     (pkgs.python3.withPackages (p: [
       p.scapy
       p.tqdm