Added Port.Type and plumbed it throughout.
diff --git a/core/api/src/main/java/org/onlab/onos/net/DefaultPort.java b/core/api/src/main/java/org/onlab/onos/net/DefaultPort.java
index 9d4f8a8..d9cd764 100644
--- a/core/api/src/main/java/org/onlab/onos/net/DefaultPort.java
+++ b/core/api/src/main/java/org/onlab/onos/net/DefaultPort.java
@@ -24,9 +24,14 @@
  */
 public class DefaultPort extends AbstractAnnotated implements Port {
 
+    /** Default port speed in Mbps. */
+    public static final long DEFAULT_SPEED = 1_000;
+
     private final Element element;
     private final PortNumber number;
     private final boolean isEnabled;
+    private final Type type;
+    private final long portSpeed;
 
     /**
      * Creates a network element attributed to the specified provider.
@@ -36,40 +41,35 @@
      * @param isEnabled   indicator whether the port is up and active
      * @param annotations optional key/value annotations
      */
-    public DefaultPort(Element element, PortNumber number,
-                       boolean isEnabled, Annotations... annotations) {
+    public DefaultPort(Element element, PortNumber number, boolean isEnabled,
+                       Annotations... annotations) {
+        this(element, number, isEnabled, Type.COPPER, DEFAULT_SPEED, annotations);
+    }
+
+    /**
+     * Creates a network element attributed to the specified provider.
+     *
+     * @param element     parent network element
+     * @param number      port number
+     * @param isEnabled   indicator whether the port is up and active
+     * @param type        port type
+     * @param portSpeed   port speed in Mbs
+     * @param annotations optional key/value annotations
+     */
+    public DefaultPort(Element element, PortNumber number, boolean isEnabled,
+                       Type type, long portSpeed, Annotations... annotations) {
         super(annotations);
         this.element = element;
         this.number = number;
         this.isEnabled = isEnabled;
+        this.type = type;
+        this.portSpeed = portSpeed;
+
     }
 
     @Override
-    public int hashCode() {
-        return Objects.hash(number, isEnabled);
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) {
-            return true;
-        }
-        if (obj instanceof DefaultPort) {
-            final DefaultPort other = (DefaultPort) obj;
-            return Objects.equals(this.element.id(), other.element.id()) &&
-                    Objects.equals(this.number, other.number) &&
-                    Objects.equals(this.isEnabled, other.isEnabled);
-        }
-        return false;
-    }
-
-    @Override
-    public String toString() {
-        return toStringHelper(this)
-                .add("element", element.id())
-                .add("number", number)
-                .add("isEnabled", isEnabled)
-                .toString();
+    public Element element() {
+        return element;
     }
 
     @Override
@@ -83,8 +83,45 @@
     }
 
     @Override
-    public Element element() {
-        return element;
+    public Type type() {
+        return type;
+    }
+
+    @Override
+    public long portSpeed() {
+        return portSpeed;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(number, isEnabled, type, portSpeed);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof DefaultPort) {
+            final DefaultPort other = (DefaultPort) obj;
+            return Objects.equals(this.element.id(), other.element.id()) &&
+                    Objects.equals(this.number, other.number) &&
+                    Objects.equals(this.isEnabled, other.isEnabled) &&
+                    Objects.equals(this.type, other.type) &&
+                    Objects.equals(this.portSpeed, other.portSpeed);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this)
+                .add("element", element.id())
+                .add("number", number)
+                .add("isEnabled", isEnabled)
+                .add("type", type)
+                .add("portSpeed", portSpeed)
+                .toString();
     }
 
 }
diff --git a/core/api/src/main/java/org/onlab/onos/net/Port.java b/core/api/src/main/java/org/onlab/onos/net/Port.java
index 7bf6af3..2153593 100644
--- a/core/api/src/main/java/org/onlab/onos/net/Port.java
+++ b/core/api/src/main/java/org/onlab/onos/net/Port.java
@@ -21,6 +21,26 @@
  */
 public interface Port extends Annotated {
 
+    /** Represents coarse port type classification. */
+    public enum Type {
+        /**
+         * Signifies copper-based connectivity.
+         */
+        COPPER,
+
+        /**
+         * Signifies optical fiber-based connectivity.
+         */
+        FIBER
+    }
+
+    /**
+     * Returns the parent network element to which this port belongs.
+     *
+     * @return parent network element
+     */
+    Element element();
+
     /**
      * Returns the port number.
      *
@@ -36,12 +56,18 @@
     boolean isEnabled();
 
     /**
-     * Returns the parent network element to which this port belongs.
+     * Returns the port type.
      *
-     * @return parent network element
+     * @return port type
      */
-    Element element();
+    Type type();
 
-    // set of port attributes
+    /**
+     * Returns the current port speed in Mbps.
+     *
+     * @return current port speed
+     */
+    long portSpeed();
 
+    // TODO: more attributes?
 }
diff --git a/core/api/src/main/java/org/onlab/onos/net/device/DefaultPortDescription.java b/core/api/src/main/java/org/onlab/onos/net/device/DefaultPortDescription.java
index 47e3280..9688827 100644
--- a/core/api/src/main/java/org/onlab/onos/net/device/DefaultPortDescription.java
+++ b/core/api/src/main/java/org/onlab/onos/net/device/DefaultPortDescription.java
@@ -15,11 +15,12 @@
  */
 package org.onlab.onos.net.device;
 
+import com.google.common.base.MoreObjects;
 import org.onlab.onos.net.AbstractDescription;
 import org.onlab.onos.net.PortNumber;
 import org.onlab.onos.net.SparseAnnotations;
 
-import com.google.common.base.MoreObjects;
+import static org.onlab.onos.net.Port.Type;
 
 /**
  * Default implementation of immutable port description.
@@ -27,32 +28,62 @@
 public class DefaultPortDescription extends AbstractDescription
         implements PortDescription {
 
+    private static final long DEFAULT_SPEED = 1_000;
+
     private final PortNumber number;
     private final boolean isEnabled;
+    private final Type type;
+    private final long portSpeed;
 
     /**
      * Creates a port description using the supplied information.
      *
-     * @param number       port number
-     * @param isEnabled    port enabled state
-     * @param annotations  optional key/value annotations map
+     * @param number      port number
+     * @param isEnabled   port enabled state
+     * @param annotations optional key/value annotations map
      */
     public DefaultPortDescription(PortNumber number, boolean isEnabled,
-                SparseAnnotations... annotations) {
-        super(annotations);
-        this.number = number;
-        this.isEnabled = isEnabled;
+                                  SparseAnnotations... annotations) {
+        this(number, isEnabled, Type.COPPER, DEFAULT_SPEED, annotations);
     }
 
     /**
      * Creates a port description using the supplied information.
      *
-     * @param base         PortDescription to get basic information from
-     * @param annotations  optional key/value annotations map
+     * @param number      port number
+     * @param isEnabled   port enabled state
+     * @param type        port type
+     * @param portSpeed   port speed in Mbps
+     * @param annotations optional key/value annotations map
+     */
+    public DefaultPortDescription(PortNumber number, boolean isEnabled,
+                                  Type type, long portSpeed,
+                                  SparseAnnotations...annotations) {
+        super(annotations);
+        this.number = number;
+        this.isEnabled = isEnabled;
+        this.type = type;
+        this.portSpeed = portSpeed;
+    }
+
+    // Default constructor for serialization
+    private DefaultPortDescription() {
+        this.number = null;
+        this.isEnabled = false;
+        this.portSpeed = DEFAULT_SPEED;
+        this.type = Type.COPPER;
+    }
+
+    /**
+     * Creates a port description using the supplied information.
+     *
+     * @param base        PortDescription to get basic information from
+     * @param annotations optional key/value annotations map
      */
     public DefaultPortDescription(PortDescription base,
-            SparseAnnotations annotations) {
-        this(base.portNumber(), base.isEnabled(), annotations);
+                                  SparseAnnotations annotations) {
+        this(base.portNumber(), base.isEnabled(), base.type(), base.portSpeed(),
+             annotations);
     }
 
     @Override
@@ -66,17 +97,24 @@
     }
 
     @Override
+    public Type type() {
+        return type;
+    }
+
+    @Override
+    public long portSpeed() {
+        return portSpeed;
+    }
+
+    @Override
     public String toString() {
         return MoreObjects.toStringHelper(getClass())
                 .add("number", number)
                 .add("isEnabled", isEnabled)
+                .add("type", type)
+                .add("portSpeed", portSpeed)
                 .add("annotations", annotations())
                 .toString();
     }
 
-    // default constructor for serialization
-    private DefaultPortDescription() {
-        this.number = null;
-        this.isEnabled = false;
-    }
 }
diff --git a/core/api/src/main/java/org/onlab/onos/net/device/PortDescription.java b/core/api/src/main/java/org/onlab/onos/net/device/PortDescription.java
index cdee005..b134d83 100644
--- a/core/api/src/main/java/org/onlab/onos/net/device/PortDescription.java
+++ b/core/api/src/main/java/org/onlab/onos/net/device/PortDescription.java
@@ -18,13 +18,13 @@
 import org.onlab.onos.net.Description;
 import org.onlab.onos.net.PortNumber;
 
+import static org.onlab.onos.net.Port.Type;
+
 /**
  * Information about a port.
  */
 public interface PortDescription extends Description {
 
-    // TODO: possibly relocate this to a common ground so that this can also used by host tracking if required
-
     /**
      * Returns the port number.
      *
@@ -39,4 +39,18 @@
      */
     boolean isEnabled();
 
+    /**
+     * Returns the port type.
+     *
+     * @return port type
+     */
+    Type type();
+
+    /**
+     * Returns the current port speed in Mbps.
+     *
+     * @return current port speed
+     */
+    long portSpeed();
+
 }