diff --git a/inc/saiport.h b/inc/saiport.h
index a200e757..83c69990 100644
--- a/inc/saiport.h
+++ b/inc/saiport.h
@@ -3481,6 +3481,17 @@ typedef enum _sai_port_attr_t
      */
     SAI_PORT_ATTR_APSU_ISL_READY,
 
+    /** @brief Link down debounce time in microseconds
+     *
+     * 0 means no delay time so link down events are immediately delivered as usual
+     * This attribute overrides the switch level debounce configuration
+     *
+     * @type sai_uint32_t
+     * @flags CREATE_AND_SET
+     * @default 0
+     */
+    SAI_PORT_ATTR_LINK_DOWN_DEBOUNCE_TIMEOUT,
+
     /**
      * @brief End of attributes
      */
diff --git a/inc/saiswitch.h b/inc/saiswitch.h
index d3f8edeb..f48e09cf 100644
--- a/inc/saiswitch.h
+++ b/inc/saiswitch.h
@@ -3652,6 +3652,16 @@ typedef enum _sai_switch_attr_t
      */
     SAI_SWITCH_ATTR_TAM_EVENT_LEARN_NOTIFY,
 
+    /** @brief Link down debounce time in microseconds
+     *
+     * 0 means no delay time so link down events are immediately delivered as usual
+     *
+     * @type sai_uint32_t
+     * @flags CREATE_AND_SET
+     * @default 0
+     */
+    SAI_SWITCH_ATTR_LINK_DOWN_DEBOUNCE_TIMEOUT,
+
     /**
      * @brief End of attributes
      */