diff --git a/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/IsIsNonPseudonode.java b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/IsIsNonPseudonode.java
index 73f28bb..8410157 100644
--- a/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/IsIsNonPseudonode.java
+++ b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/IsIsNonPseudonode.java
@@ -28,7 +28,7 @@
  * Provides Implementation of IsIsNonPseudonode Tlv.
  */
 public class IsIsNonPseudonode implements IGPRouterID, BGPValueType {
-    protected static final Logger log = LoggerFactory.getLogger(IsIsNonPseudonode.class);
+    private static final Logger log = LoggerFactory.getLogger(IsIsNonPseudonode.class);
 
     public static final short TYPE = 515;
     public static final short LENGTH = 6;
@@ -41,7 +41,7 @@
      * @param isoNodeID ISO system-ID
      */
     public IsIsNonPseudonode(byte[] isoNodeID) {
-        this.isoNodeID = isoNodeID;
+        this.isoNodeID = Arrays.copyOf(isoNodeID, isoNodeID.length);
     }
 
     /**
@@ -97,7 +97,7 @@
      */
     public static IsIsNonPseudonode read(ChannelBuffer cb) {
         byte[] isoNodeID = new byte[LENGTH];
-        cb.readBytes(isoNodeID, 0, LENGTH);
+        cb.readBytes(isoNodeID);
         return IsIsNonPseudonode.of(isoNodeID);
     }