diff --git a/core/api/src/main/java/org/onlab/onos/net/packet/PacketProcessor.java b/core/api/src/main/java/org/onlab/onos/net/packet/PacketProcessor.java
index a53a08c..fc77c94 100644
--- a/core/api/src/main/java/org/onlab/onos/net/packet/PacketProcessor.java
+++ b/core/api/src/main/java/org/onlab/onos/net/packet/PacketProcessor.java
@@ -1,10 +1,15 @@
 package org.onlab.onos.net.packet;
 
+
 /**
  * Abstraction of an inbound packet processor.
  */
 public interface PacketProcessor {
 
+    public static final int ADVISOR_MAX = Integer.MAX_VALUE / 3;
+    public static final int DIRECTOR_MAX = (Integer.MAX_VALUE / 3) * 2;
+    public static final int OBSERVER_MAX = Integer.MAX_VALUE;
+
     /**
      * Processes the inbound packet as specified in the given context.
      *