diff --git a/src/sonic-config-engine/minigraph.py b/src/sonic-config-engine/minigraph.py
index 9ec29a23d06f..9c8adfc28756 100644
--- a/src/sonic-config-engine/minigraph.py
+++ b/src/sonic-config-engine/minigraph.py
@@ -2077,7 +2077,7 @@ def parse_xml(filename, platform=None, port_config_file=None, asic_name=None, hw
     results['SYSLOG_SERVER'] = dict((item, {}) for item in syslog_servers)
     results['DHCP_SERVER'] = dict((item, {}) for item in dhcp_servers)
     results['DHCP_RELAY'] = dhcp_relay_table
-    results['NTP_SERVER'] = dict((item, {}) for item in ntp_servers)
+    results['NTP_SERVER'] = dict((item, {'iburst': 'on'}) for item in ntp_servers)
     # Set default DNS nameserver from dns.j2
     results['DNS_NAMESERVER'] = {}
     if os.environ.get("CFGGEN_UNIT_TESTING", "0") == "2":
diff --git a/src/sonic-config-engine/tests/test_cfggen.py b/src/sonic-config-engine/tests/test_cfggen.py
index b8480cf81fee..c07eb128847b 100644
--- a/src/sonic-config-engine/tests/test_cfggen.py
+++ b/src/sonic-config-engine/tests/test_cfggen.py
@@ -696,7 +696,7 @@ def test_metadata_tacacs(self):
     def test_metadata_ntp(self):
         argument = ['-m', self.sample_graph_metadata, '-p', self.port_config, '-v', "NTP_SERVER"]
         output = self.run_script(argument)
-        self.assertEqual(utils.to_dict(output.strip()), utils.to_dict("{'10.0.10.1': {}, '10.0.10.2': {}}"))
+        self.assertEqual(utils.to_dict(output.strip()), utils.to_dict("{'10.0.10.1': {'iburst': 'on'}, '10.0.10.2': {'iburst': 'on'}}"))
 
     def test_dns_nameserver(self):
         argument = ['-m', self.sample_graph_metadata, '-p', self.port_config, '-v', "DNS_NAMESERVER"]
diff --git a/src/sonic-config-engine/tests/test_minigraph_case.py b/src/sonic-config-engine/tests/test_minigraph_case.py
index 8bad0f5f3560..d351df25ac9d 100644
--- a/src/sonic-config-engine/tests/test_minigraph_case.py
+++ b/src/sonic-config-engine/tests/test_minigraph_case.py
@@ -283,7 +283,7 @@ def test_minigraph_mgmt_port(self):
     def test_metadata_ntp(self):
         argument = ['-m', self.sample_graph, '-p', self.port_config, '-v', "NTP_SERVER"]
         output = self.run_script(argument)
-        self.assertEqual(output.strip(), "{'10.0.10.1': {}, '10.0.10.2': {}}")
+        self.assertEqual(output.strip(), "{'10.0.10.1': {'iburst': 'on'}, '10.0.10.2': {'iburst': 'on'}}")
 
     def test_minigraph_vnet(self):
         argument = ['-m', self.sample_graph, '-p', self.port_config, '-v', "VNET"]
diff --git a/src/sonic-config-engine/tests/test_multinpu_cfggen.py b/src/sonic-config-engine/tests/test_multinpu_cfggen.py
index bc4227f85d52..92441f258c85 100644
--- a/src/sonic-config-engine/tests/test_multinpu_cfggen.py
+++ b/src/sonic-config-engine/tests/test_multinpu_cfggen.py
@@ -142,7 +142,7 @@ def test_metadata_tacacs(self):
     def test_metadata_ntp(self):
         argument = ['-m', self.sample_graph, '-p', self.sample_port_config, '--var-json', "NTP_SERVER"]
         output = json.loads(self.run_script(argument))
-        self.assertDictEqual(output, {'17.39.1.130': {}, '17.39.1.129': {}})
+        self.assertDictEqual(output, {'17.39.1.130': {'iburst': 'on'}, '17.39.1.129': {'iburst': 'on'}})
         #NTP data is present only in the host config
         argument = ['-m', self.sample_graph, '--var-json', "NTP_SERVER"]
         for asic in range(NUM_ASIC):