diff --git a/core/api/src/main/java/org/onlab/onos/net/device/DeviceService.java b/core/api/src/main/java/org/onlab/onos/net/device/DeviceService.java
index d35b1af..7d2a0dd 100644
--- a/core/api/src/main/java/org/onlab/onos/net/device/DeviceService.java
+++ b/core/api/src/main/java/org/onlab/onos/net/device/DeviceService.java
@@ -44,6 +44,14 @@
     Iterable<Device> getDevices();
 
     /**
+     * Returns an iterable collection of all devices
+     * currently available to the system.
+     *
+     * @return device collection
+     */
+    Iterable<Device> getAvailableDevices();
+
+    /**
      * Returns the device with the specified identifier.
      *
      * @param deviceId device identifier
diff --git a/core/api/src/main/java/org/onlab/onos/net/device/DeviceStore.java b/core/api/src/main/java/org/onlab/onos/net/device/DeviceStore.java
index bc0b5c1..ed86881 100644
--- a/core/api/src/main/java/org/onlab/onos/net/device/DeviceStore.java
+++ b/core/api/src/main/java/org/onlab/onos/net/device/DeviceStore.java
@@ -44,6 +44,15 @@
     Iterable<Device> getDevices();
 
     /**
+     * Returns an iterable collection of all devices currently available to the system.
+     *
+     * @return device collection
+     */
+    Iterable<Device> getAvailableDevices();
+
+
+
+    /**
      * Returns the device with the specified identifier.
      *
      * @param deviceId device identifier
diff --git a/core/api/src/main/java/org/onlab/onos/net/link/LinkService.java b/core/api/src/main/java/org/onlab/onos/net/link/LinkService.java
index 2039aa5..58b01bf 100644
--- a/core/api/src/main/java/org/onlab/onos/net/link/LinkService.java
+++ b/core/api/src/main/java/org/onlab/onos/net/link/LinkService.java
@@ -41,6 +41,13 @@
     Iterable<Link> getLinks();
 
     /**
+     * Returns a collection of all active infrastructure links.
+     *
+     * @return all infrastructure links
+     */
+    Iterable<Link> getActiveLinks();
+
+    /**
      * Returns set of all infrastructure links leading to and from the
      * specified device.
      *
diff --git a/core/api/src/test/java/org/onlab/onos/net/device/DeviceServiceAdapter.java b/core/api/src/test/java/org/onlab/onos/net/device/DeviceServiceAdapter.java
index 6b4ed3b..3d2d74f 100644
--- a/core/api/src/test/java/org/onlab/onos/net/device/DeviceServiceAdapter.java
+++ b/core/api/src/test/java/org/onlab/onos/net/device/DeviceServiceAdapter.java
@@ -21,6 +21,9 @@
 import org.onlab.onos.net.Port;
 import org.onlab.onos.net.PortNumber;
 
+import com.google.common.base.Predicate;
+import com.google.common.collect.FluentIterable;
+
 import java.util.List;
 
 /**
@@ -38,6 +41,18 @@
     }
 
     @Override
+    public Iterable<Device> getAvailableDevices() {
+        return FluentIterable.from(getDevices())
+                .filter(new Predicate<Device>() {
+
+                    @Override
+                    public boolean apply(Device input) {
+                        return isAvailable(input.id());
+                    }
+                });
+    }
+
+    @Override
     public Device getDevice(DeviceId deviceId) {
         return null;
     }
diff --git a/core/api/src/test/java/org/onlab/onos/net/link/LinkServiceAdapter.java b/core/api/src/test/java/org/onlab/onos/net/link/LinkServiceAdapter.java
index 0e25e2a..b22f0a5 100644
--- a/core/api/src/test/java/org/onlab/onos/net/link/LinkServiceAdapter.java
+++ b/core/api/src/test/java/org/onlab/onos/net/link/LinkServiceAdapter.java
@@ -20,6 +20,10 @@
 import org.onlab.onos.net.ConnectPoint;
 import org.onlab.onos.net.DeviceId;
 import org.onlab.onos.net.Link;
+import org.onlab.onos.net.Link.State;
+
+import com.google.common.base.Predicate;
+import com.google.common.collect.FluentIterable;
 
 /**
  * Test adapter for link service.
@@ -36,6 +40,18 @@
     }
 
     @Override
+    public Iterable<Link> getActiveLinks() {
+        return FluentIterable.from(getLinks())
+                .filter(new Predicate<Link>() {
+
+                    @Override
+                    public boolean apply(Link input) {
+                        return input.state() == State.ACTIVE;
+                    }
+                });
+    }
+
+    @Override
     public Set<Link> getDeviceLinks(DeviceId deviceId) {
         return null;
     }