diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/INetworkSwitchControl.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/INetworkSwitchControl.cs
index 6174ff28..0aaf89d2 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/INetworkSwitchControl.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/INetworkSwitchControl.cs
@@ -84,6 +84,11 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// </summary>
     public enum NetworkSwitchPortEventType
     {
+        /// <summary>
+        /// Indicates that the type of event is unknown or cannot be determined.
+        /// </summary>
+        Unknown,
+
         /// <summary>
         /// Indicates that the access VLAN on a port has changed, either through a successful call to SetPortVlan
         /// </summary>