diff --git a/src/bal_interface_hdlr.c b/src/bal_interface_hdlr.c
new file mode 100755
index 0000000..33847ea
--- /dev/null
+++ b/src/bal_interface_hdlr.c
@@ -0,0 +1,196 @@
+/*
+** Copyright 2017-present Open Networking Foundation
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+** http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include <stdio.h>
+#include <bal_api.h>
+
+#undef _SYS_QUEUE_H_
+
+#include "asfvolt16_driver.h"
+#include "bal_interface_hdlr.h"
+
+/********************************************************************\
+ * Function    : bal_interface_cfg_set                          *
+ * Description : Configures the PON and NNI interfaces              *
+ *               of OLT Device                                      *
+ ********************************************************************/
+uint32_t bal_interface_cfg_set(BalInterfaceCfg *interface_cfg)
+{
+    bcmos_errno err = BCM_ERR_OK;
+    bcmbal_interface_cfg interface_obj;
+    bcmbal_interface_key intf_key;
+
+    intf_key.intf_id = interface_cfg->key->intf_id;
+    intf_key.intf_type = interface_cfg->key->intf_type;
+
+
+    /*
+     * Set the key in the interface object and initialize the object itself
+     */
+    BCMBAL_CFG_INIT(&interface_obj, interface, intf_key);
+
+    bcmbal_cfg_get(DEFAULT_ATERM_ID, &(interface_obj.hdr));
+
+    if(BCMBAL_STATUS_UP != ((bcmbal_interface_cfg *)&interface_obj.hdr)->data.oper_status)
+    {
+        BCMBAL_CFG_INIT(&interface_obj, interface, intf_key);
+
+        ASFVOLT_CFG_PROP_SET(interface_obj, interface, admin_state, BCMOS_TRUE, BCMBAL_STATE_UP);
+         
+        ASFVOLT_CFG_PROP_SET(interface_obj, interface, min_data_agg_port_id, 
+                               interface_cfg->data->has_min_data_svc_port_id, 
+                               interface_cfg->data->min_data_agg_port_id);
+
+        ASFVOLT_CFG_PROP_SET(interface_obj, interface, min_data_svc_port_id, 
+                               interface_cfg->data->has_min_data_svc_port_id, 
+                               interface_cfg->data->min_data_svc_port_id);
+
+        ASFVOLT_CFG_PROP_SET(interface_obj, interface, transceiver_type,
+                               BCMOS_TRUE, 
+                               interface_cfg->data->transceiver_type);
+        ASFVOLT_LOG(ASFVOLT_INFO, "Setting transceiver_type to : %d\n", interface_cfg->data->transceiver_type);
+
+        ASFVOLT_CFG_PROP_SET(interface_obj, interface, ds_miss_mode,
+                               interface_cfg->data->has_ds_miss_mode, 
+                               interface_cfg->data->ds_miss_mode);
+
+        ASFVOLT_CFG_PROP_SET(interface_obj, interface, mtu,
+                               interface_cfg->data->has_mtu, 
+                               interface_cfg->data->mtu);
+
+        ASFVOLT_CFG_PROP_SET(interface_obj, interface, flow_control,
+                               interface_cfg->data->has_flow_control, 
+                               interface_cfg->data->flow_control);
+
+        ASFVOLT_CFG_PROP_SET(interface_obj, interface, ds_tm,
+                               interface_cfg->data->has_ds_tm, 
+                               interface_cfg->data->ds_tm);
+
+        ASFVOLT_CFG_PROP_SET(interface_obj, interface, us_tm,
+                               interface_cfg->data->has_us_tm, 
+                               interface_cfg->data->us_tm);
+
+        ASFVOLT_LOG(ASFVOLT_INFO, "Bringing up the interface No: %d\n", intf_key.intf_id);
+
+        err = bcmbal_cfg_set(DEFAULT_ATERM_ID, &(interface_obj.hdr));
+
+        if(BCM_ERR_OK != err)
+        {
+            ASFVOLT_LOG(ASFVOLT_ERROR, "Failed to configure the interface object to ADMIN-UP\n");
+            return BAL_ERRNO__BAL_ERR_INTERNAL;
+        }
+    }
+    ASFVOLT_LOG(ASFVOLT_DEBUG, "\n Set Interface configuration sent to OLT.Interface ID(%d) Interface Type(%d)\n", 
+                                intf_key.intf_id, intf_key.intf_type);
+    return BAL_ERRNO__BAL_ERR_OK;
+}
+
+
+/********************************************************************\
+ * Function    : bal_interface_cfg_get                              *
+ * Description : get the PON and NNI interfaces                     *
+ *               of OLT Device                                      *
+ ********************************************************************/
+uint32_t bal_interface_cfg_get(BalInterfaceKey *interface_cfg_key, 
+                               BalInterfaceCfg *interface_cfg)
+{
+    bcmos_errno err = BCM_ERR_OK;
+    bcmbal_interface_cfg interface_obj;
+    bcmbal_interface_key intf_key;
+    
+    if((interface_cfg_key->has_intf_id) && (interface_cfg_key->has_intf_type))
+    {
+       intf_key.intf_id = interface_cfg_key->intf_id;
+       intf_key.intf_type = interface_cfg_key->intf_type;
+    }
+    else
+    {
+       ASFVOLT_LOG(ASFVOLT_ERROR, "Failed to get the interface cfg(OLT): Missing Key values\
+                                   Recevied key values intf-id(%d), intf-type(%d) \n", 
+                                   interface_cfg_key->intf_id, interface_cfg_key->intf_type);
+       return BAL_ERRNO__BAL_ERR_NOENT;
+    }
+
+    ASFVOLT_LOG(ASFVOLT_DEBUG, "Get interface cfg(for OLT) starts\n");
+    /*
+     * Set the key in the interface object and initialize the object itself
+     */
+    BCMBAL_CFG_INIT(&interface_obj, interface, intf_key);
+ 
+    /* request all properties, include everything */
+    BCMBAL_CFG_PROP_GET(&interface_obj, interface, all_properties);
+
+    err = bcmbal_cfg_get(DEFAULT_ATERM_ID, &interface_obj.hdr);
+
+    if(BCM_ERR_OK != err)
+    {
+        ASFVOLT_LOG(ASFVOLT_ERROR, "Failed to get the interface Cfg(OLT)\n");
+        return BAL_ERRNO__BAL_ERR_INTERNAL;
+    }
+
+    ASFVOLT_LOG(ASFVOLT_INFO, "\nGet Interface cfg sent to OLT. \
+                               Interface ID(%d) Interface Type(%d)\n", 
+                               intf_key.intf_id, intf_key.intf_type);
+    /* TODO - Add code to call grpc */
+
+    return BAL_ERRNO__BAL_ERR_OK;
+}
+
+
+/********************************************************************\
+ * Function    : bal_interface_cfg_clear                            *
+ * Description : Clears the PON and NNI interfaces                  *
+ *               of OLT Device                                      *
+ ********************************************************************/
+uint32_t bal_interface_cfg_clear(BalInterfaceKey *interface_cfg_key)
+{
+    bcmos_errno err = BCM_ERR_OK;
+    bcmbal_interface_cfg interface_obj;
+    bcmbal_interface_key intf_key;
+    
+    if((interface_cfg_key->has_intf_id) && (interface_cfg_key->has_intf_type))
+    {
+       intf_key.intf_id = interface_cfg_key->intf_id;
+       intf_key.intf_type = interface_cfg_key->intf_type;
+    }
+    else
+    {
+       ASFVOLT_LOG(ASFVOLT_ERROR, "Failed to clear the interface cfg(OLT): Missing Key values\
+                                   Recevied key values intf-id(%d), intf-type(%d) \n", 
+                                   interface_cfg_key->intf_id, interface_cfg_key->intf_type);
+       return BAL_ERRNO__BAL_ERR_NOENT;
+    }
+
+
+    ASFVOLT_LOG(ASFVOLT_DEBUG, "Clearing of OLT(interface cfg) starts\n");
+    /*
+     * Set the key in the interface object and initialize the object itself
+     */
+    BCMBAL_CFG_INIT(&interface_obj, interface, intf_key);
+
+    err = bcmbal_cfg_clear(DEFAULT_ATERM_ID, &interface_obj.hdr);
+
+    if(BCM_ERR_OK != err)
+    {
+        ASFVOLT_LOG(ASFVOLT_ERROR, "Failed to clear the interface Cfg(OLT)\n");
+        return BAL_ERRNO__BAL_ERR_INTERNAL;
+    }
+
+    ASFVOLT_LOG(ASFVOLT_INFO, "\nClear Interface cfg sent to OLT. \
+                               Interface ID(%d) Interface Type(%d)\n", 
+                               intf_key.intf_id, intf_key.intf_type);
+    return BAL_ERRNO__BAL_ERR_OK;
+}