diff --git a/core/api/src/main/java/org/onlab/onos/net/host/HostAdminService.java b/core/api/src/main/java/org/onlab/onos/net/host/HostAdminService.java
index d94449a..29f6c04 100644
--- a/core/api/src/main/java/org/onlab/onos/net/host/HostAdminService.java
+++ b/core/api/src/main/java/org/onlab/onos/net/host/HostAdminService.java
@@ -1,6 +1,11 @@
 package org.onlab.onos.net.host;
 
+import java.util.Set;
+
+import org.onlab.onos.net.ConnectPoint;
 import org.onlab.onos.net.HostId;
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.MacAddress;
 
 /**
  * Service for administering the inventory of end-station hosts.
@@ -14,4 +19,42 @@
      */
     void removeHost(HostId hostId);
 
+    /**
+     * Binds an IP address and optional MAC address to the given connection
+     * point.
+     * <p/>
+     * This method will overwrite any previously held address information for
+     * the connection point.
+     *
+     * @param ip the IP address to bind to the connection point. This parameter
+     * is mandatory and cannot be null.
+     * @param mac the optional MAC address to bind to the connection point. Can
+     * be set to null if no MAC address needs to be bound.
+     * @param connectPoint the connection point to bind the addresses to
+     */
+    void bindAddressesToPort(IpAddress ip, MacAddress mac, ConnectPoint connectPoint);
+
+    /**
+     * Removes all address information for the given connection point.
+     *
+     * @param connectPoint the connection point to remove address information
+     */
+    void unbindAddressesFromPort(ConnectPoint connectPoint);
+
+    /**
+     * Returns the addresses information for all connection points.
+     *
+     * @return the set of address bindings for all connection points
+     */
+    Set<PortAddresses> getAddressBindings();
+
+    /**
+     * Retrieves the addresses that have been bound to the given connection
+     * point.
+     *
+     * @param connectPoint the connection point to retrieve address bindings
+     * for
+     * @return addresses bound to the port
+     */
+    PortAddresses getAddressBindingsForPort(ConnectPoint connectPoint);
 }
diff --git a/core/api/src/main/java/org/onlab/onos/net/host/HostService.java b/core/api/src/main/java/org/onlab/onos/net/host/HostService.java
index 3717bea..a0f51b3 100644
--- a/core/api/src/main/java/org/onlab/onos/net/host/HostService.java
+++ b/core/api/src/main/java/org/onlab/onos/net/host/HostService.java
@@ -6,6 +6,7 @@
 import org.onlab.onos.net.DeviceId;
 import org.onlab.onos.net.Host;
 import org.onlab.onos.net.HostId;
+import org.onlab.packet.IpAddress;
 import org.onlab.packet.IpPrefix;
 import org.onlab.packet.MacAddress;
 import org.onlab.packet.VlanId;
@@ -87,7 +88,7 @@
      *
      * @param ip IP address of the host to monitor
      */
-    void monitorIp(IpPrefix ip);
+    void startMonitoringIp(IpAddress ip);
 
     /**
      * Stops the host service from monitoring an IP address.
@@ -95,7 +96,18 @@
      * @param ip IP address to stop monitoring
      */
     // TODO clients can cancel other client's requests
-    void stopMonitoringIp(IpPrefix ip);
+    void stopMonitoringIp(IpAddress ip);
+
+    /**
+     * Requests the host service to resolve the MAC address for the given IP
+     * address.
+     * <p/>
+     * This will trigger a notification to the host listeners if the MAC
+     * address is found.
+     *
+     * @param ip IP address to find the MAC address for
+     */
+    void requestMac(IpAddress ip);
 
     /**
      * Adds the specified host listener.
diff --git a/core/api/src/main/java/org/onlab/onos/net/host/HostStore.java b/core/api/src/main/java/org/onlab/onos/net/host/HostStore.java
index ea316b2..e3667e3 100644
--- a/core/api/src/main/java/org/onlab/onos/net/host/HostStore.java
+++ b/core/api/src/main/java/org/onlab/onos/net/host/HostStore.java
@@ -1,5 +1,7 @@
 package org.onlab.onos.net.host;
 
+import java.util.Set;
+
 import org.onlab.onos.net.ConnectPoint;
 import org.onlab.onos.net.DeviceId;
 import org.onlab.onos.net.Host;
@@ -9,8 +11,6 @@
 import org.onlab.packet.MacAddress;
 import org.onlab.packet.VlanId;
 
-import java.util.Set;
-
 /**
  * Manages inventory of end-station hosts; not intended for direct use.
  */
@@ -98,4 +98,34 @@
      */
     Set<Host> getConnectedHosts(DeviceId deviceId);
 
+    /**
+     * Updates the address information for a given port.
+     *
+     * @param addresses the port and address information
+     */
+    void updateAddressBindings(PortAddresses addresses);
+
+    /**
+     * Removes any previously stored address information for a given connection
+     * point.
+     *
+     * @param connectPoint the connection point
+     */
+    void removeAddressBindings(ConnectPoint connectPoint);
+
+    /**
+     * Returns the address bindings stored for all connection points.
+     *
+     * @return the set of address bindings
+     */
+    Set<PortAddresses> getAddressBindings();
+
+    /**
+     * Returns the address bindings for a particular connection point.
+     *
+     * @param connectPoint the connection point to return address information
+     * for
+     * @return address information for the connection point
+     */
+    PortAddresses getAddressBindingsForPort(ConnectPoint connectPoint);
 }
diff --git a/core/api/src/main/java/org/onlab/onos/net/host/PortAddresses.java b/core/api/src/main/java/org/onlab/onos/net/host/PortAddresses.java
new file mode 100644
index 0000000..16cc2b1
--- /dev/null
+++ b/core/api/src/main/java/org/onlab/onos/net/host/PortAddresses.java
@@ -0,0 +1,32 @@
+package org.onlab.onos.net.host;
+
+import org.onlab.onos.net.ConnectPoint;
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.MacAddress;
+
+/**
+ * Represents address information bound to a port.
+ */
+public interface PortAddresses {
+
+    /**
+     * Returns the connection point this address information is bound to.
+     *
+     * @return the connection point
+     */
+    ConnectPoint connectPoint();
+
+    /**
+     * Returns the IP address bound to the port.
+     *
+     * @return the IP address
+     */
+    IpAddress ip();
+
+    /**
+     * Returns the MAC address bound to the port.
+     *
+     * @return the MAC address if one is bound, otherwise null
+     */
+    MacAddress mac();
+}
diff --git a/core/api/src/test/java/org/onlab/onos/net/host/HostServiceAdapter.java b/core/api/src/test/java/org/onlab/onos/net/host/HostServiceAdapter.java
index 6a270cd..f03621c 100644
--- a/core/api/src/test/java/org/onlab/onos/net/host/HostServiceAdapter.java
+++ b/core/api/src/test/java/org/onlab/onos/net/host/HostServiceAdapter.java
@@ -6,6 +6,7 @@
 import org.onlab.onos.net.DeviceId;
 import org.onlab.onos.net.Host;
 import org.onlab.onos.net.HostId;
+import org.onlab.packet.IpAddress;
 import org.onlab.packet.IpPrefix;
 import org.onlab.packet.MacAddress;
 import org.onlab.packet.VlanId;
@@ -55,11 +56,15 @@
     }
 
     @Override
-    public void monitorIp(IpPrefix ip) {
+    public void startMonitoringIp(IpAddress ip) {
     }
 
     @Override
-    public void stopMonitoringIp(IpPrefix ip) {
+    public void stopMonitoringIp(IpAddress ip) {
+    }
+
+    @Override
+    public void requestMac(IpAddress ip) {
     }
 
     @Override