diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpKeepaliveMsgVer4.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpKeepaliveMsgVer4.java
index 7cb13aa..ea2c785 100644
--- a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpKeepaliveMsgVer4.java
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpKeepaliveMsgVer4.java
@@ -63,7 +63,7 @@
     public static final int PACKET_MINIMUM_LENGTH = 19;
     public static final int MARKER_LENGTH = 16;
     public static final BgpType MSG_TYPE = BgpType.KEEP_ALIVE;
-    public static byte[] marker = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+    static byte[] marker = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
                                               (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
                                               (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
                                               (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff};
diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpUpdateMsgVer4.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpUpdateMsgVer4.java
index b6576a3..a0640db 100644
--- a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpUpdateMsgVer4.java
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpUpdateMsgVer4.java
@@ -84,7 +84,7 @@
     public static final int MIN_LEN_AFTER_WITHDRW_ROUTES = 2;
     public static final int MINIMUM_COMMON_HEADER_LENGTH = 19;
     public static final BgpType MSG_TYPE = BgpType.UPDATE;
-    public static byte[] marker = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+    private static byte[] marker = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
                                               (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
                                               (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
                                               (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff};
diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/IPReachabilityInformationTlv.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/IPReachabilityInformationTlv.java
index 9cdccc5..ce1c443 100644
--- a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/IPReachabilityInformationTlv.java
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/IPReachabilityInformationTlv.java
@@ -49,7 +49,7 @@
 
     private byte prefixLen;
     private byte[] ipPrefix;
-    public short length;
+    private short length;
 
     /**
      * Constructor to initialize parameters.
@@ -162,4 +162,4 @@
                 .add("Prefixvalue", getPrefixValue())
                 .toString();
     }
-}
\ No newline at end of file
+}
diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrMaxLinkBandwidth.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrMaxLinkBandwidth.java
index baa0aae..b692027 100644
--- a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrMaxLinkBandwidth.java
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrMaxLinkBandwidth.java
@@ -38,7 +38,7 @@
     public static final int MAX_BANDWIDTH_LEN = 4;
     public static final int NO_OF_BITS = 8;
 
-    public short type;
+    private short type;
 
     /* ISIS administrative group */
     private final float maxBandwidth;
diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrUnRsrvdLinkBandwidth.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrUnRsrvdLinkBandwidth.java
index 42a5e40..5f77b5f 100644
--- a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrUnRsrvdLinkBandwidth.java
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/attr/BgpLinkAttrUnRsrvdLinkBandwidth.java
@@ -41,7 +41,7 @@
     public static final int NO_OF_BITS = 8;
     public static final int NO_OF_PRIORITY = 8;
 
-    public short sType;
+    private short sType;
 
     /* ISIS administrative group */
     private List<Float> maxUnResBandwidth = new ArrayList<Float>();