diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/DeviceConfiguration.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/DeviceConfiguration.java
index 71a199e..8989288 100644
--- a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/DeviceConfiguration.java
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/config/DeviceConfiguration.java
@@ -72,6 +72,8 @@
         SetMultimap<PortNumber, IpAddress> gatewayIps;
         SetMultimap<PortNumber, IpPrefix> subnets;
         Map<Integer, Set<Integer>> adjacencySids;
+        DeviceId pairDeviceId;
+        PortNumber pairLocalPort;
 
         public SegmentRouterInfo() {
             gatewayIps = HashMultimap.create();
@@ -87,7 +89,10 @@
      */
     public DeviceConfiguration(SegmentRoutingManager srManager) {
         this.srManager = srManager;
+        updateConfig();
+    }
 
+    public void updateConfig() {
         // Read config from device subject, excluding gatewayIps and subnets.
         Set<DeviceId> deviceSubjects =
                 srManager.cfgService.getSubjects(DeviceId.class, SegmentRoutingDeviceConfig.class);
@@ -103,6 +108,8 @@
             info.mac = config.routerMac();
             info.isEdge = config.isEdgeRouter();
             info.adjacencySids = config.adjacencySids();
+            info.pairDeviceId = config.pairDeviceId();
+            info.pairLocalPort = config.pairLocalPort();
             deviceConfigMap.put(info.deviceId, info);
             log.debug("Read device config for device: {}", info.deviceId);
             /*
@@ -158,6 +165,7 @@
         });
     }
 
+
     @Override
     public boolean isConfigured(DeviceId deviceId) {
         return deviceConfigMap.get(deviceId) != null;
@@ -639,4 +647,34 @@
         }
         return false;
     }
+
+    public boolean isPairedEdge(DeviceId deviceId) throws DeviceConfigNotFoundException {
+        if (!isEdgeDevice(deviceId)) {
+            return false;
+        }
+        SegmentRouterInfo srinfo = deviceConfigMap.get(deviceId);
+        return (srinfo.pairDeviceId == null) ? false : true;
+    }
+
+    public DeviceId getPairDeviceId(DeviceId deviceId) throws DeviceConfigNotFoundException {
+        SegmentRouterInfo srinfo = deviceConfigMap.get(deviceId);
+        if (srinfo != null) {
+            return srinfo.pairDeviceId;
+        } else {
+            String message = "getPairDeviceId fails for device: " + deviceId + ".";
+            throw new DeviceConfigNotFoundException(message);
+        }
+    }
+
+    public PortNumber getPairLocalPort(DeviceId deviceId)
+            throws DeviceConfigNotFoundException {
+        SegmentRouterInfo srinfo = deviceConfigMap.get(deviceId);
+        if (srinfo != null) {
+            return srinfo.pairLocalPort;
+        } else {
+            String message = "getPairLocalPort fails for device: " + deviceId + ".";
+            throw new DeviceConfigNotFoundException(message);
+        }
+    }
+
 }