diff --git a/EduNetworkBuilder/NetworkDevice.cs b/EduNetworkBuilder/NetworkDevice.cs
index 9538770..837e09f 100644
--- a/EduNetworkBuilder/NetworkDevice.cs
+++ b/EduNetworkBuilder/NetworkDevice.cs
@@ -274,6 +274,55 @@ namespace EduNetworkBuilder
             SetImageFromType(myType);
         }
 
+        public override bool Equals(NetworkComponent toCompare)
+        {
+            if (!(toCompare is NetworkDevice)) return false; //comparing a link to a device
+            NetworkDevice CompareDevice = (NetworkDevice)toCompare;
+            if (IsDirty != CompareDevice.IsDirty) return false;
+            if (UniqueIdentifier != CompareDevice.UniqueIdentifier) return false;
+            if (hostname != CompareDevice.hostname) return false;
+            if (isInvisible != CompareDevice.isInvisible) return false;
+            if (NICs.Count != CompareDevice.NICs.Count) return false;
+            for (int i = 0; i < NICs.Count; i++)
+                if (!NICs[i].Equals(CompareDevice.NICs[i])) return false;
+            if (!DefaultGW.Equals(CompareDevice.DefaultGW)) return false;
+            if (MyLocation != CompareDevice.MyLocation) return false;
+            if (Size != CompareDevice.Size) return false;
+
+            if (ArpTable.Count != CompareDevice.ArpTable.Count) return false;
+            for (int i = 0; i < ArpTable.Count; i++)
+                if (!ArpTable[i].Equals(CompareDevice.ArpTable[i])) return false;
+
+            if (myType != CompareDevice.myType) return false;
+            if (RouteTable.Count != CompareDevice.RouteTable.Count) return false;
+            for (int i = 0; i < RouteTable.Count; i++)
+                if (!RouteTable[i].Equals(CompareDevice.RouteTable[i])) return false;
+            if (DHCPLeases.Count != CompareDevice.DHCPLeases.Count) return false;
+            for (int i = 0; i < DHCPLeases.Count; i++)
+                if (!DHCPLeases[i].Equals(CompareDevice.DHCPLeases[i])) return false;
+            if (IPConnections.Count != CompareDevice.IPConnections.Count) return false;
+            for (int i = 0; i < IPConnections.Count; i++)
+                if (!IPConnections[i].Equals(CompareDevice.IPConnections[i])) return false;
+
+            if (isDNSServer != CompareDevice.isDNSServer) return false;
+            if (isDHCPServer != CompareDevice.isDHCPServer) return false;
+
+            if (CanServeDHCP != CompareDevice.CanServeDHCP) return false;
+            if (CanUseDHCP != CompareDevice.CanUseDHCP) return false;
+            if (MustUseDHCP != CompareDevice.MustUseDHCP) return false;
+            if (CanAddNics != CompareDevice.CanAddNics) return false;
+            if (HasAdvFirewall != CompareDevice.HasAdvFirewall) return false;
+            if (IsBurned != CompareDevice.IsBurned) return false;
+            if (BackgroundColor != CompareDevice.BackgroundColor) return false;
+            if (MorphColor != CompareDevice.MorphColor) return false;
+            if (PowerOff != CompareDevice.PowerOff) return false;
+            if (FirewallRules.Count != CompareDevice.FirewallRules.Count) return false;
+            for (int i = 0; i < FirewallRules.Count; i++)
+                if (!FirewallRules[i].Equals(CompareDevice.FirewallRules[i])) return false;
+            if (!tracertmessages.SequenceEqual(CompareDevice.tracertmessages)) return false;
+            return true;
+        }
+
         public override void Destroy()
         {
             Network myNet = NB.GetNetwork();