diff --git a/src/sonic-config-engine/minigraph.py b/src/sonic-config-engine/minigraph.py
index 461b76acac03..9ab3d0f02be5 100644
--- a/src/sonic-config-engine/minigraph.py
+++ b/src/sonic-config-engine/minigraph.py
@@ -551,6 +551,10 @@ def parse_xml(filename, platform=None, port_config_file=None):
     for port in ports.itervalues():
         port['mtu'] = '9100'
 
+    # asymmetric PFC is disabled by default
+    for port in ports.itervalues():
+        port['pfc_asym'] = 'off'
+
     # set physical port default admin status up
     for port in phyport_intfs:
         if port[0] in ports:
diff --git a/src/sonic-config-engine/tests/test_cfggen.py b/src/sonic-config-engine/tests/test_cfggen.py
index 1141419392c1..8236c71bb166 100644
--- a/src/sonic-config-engine/tests/test_cfggen.py
+++ b/src/sonic-config-engine/tests/test_cfggen.py
@@ -174,48 +174,48 @@ def test_minigraph_deployment_id(self):
     def test_minigraph_ethernet_interfaces(self):
         argument = '-m "' + self.sample_graph_simple + '" -p "' + self.port_config + '" -v "PORT[\'Ethernet8\']"'
         output = self.run_script(argument)
-        self.assertEqual(output.strip(), "{'lanes': '37,38,39,40', 'description': 'Interface description', 'mtu': '9100', 'alias': 'fortyGigE0/8', 'admin_status': 'up', 'speed': '1000'}")
+        self.assertEqual(output.strip(), "{'lanes': '37,38,39,40', 'description': 'Interface description', 'pfc_asym': 'off', 'mtu': '9100', 'alias': 'fortyGigE0/8', 'admin_status': 'up', 'speed': '1000'}")
         argument = '-m "' + self.sample_graph_simple + '" -p "' + self.port_config + '" -v "PORT[\'Ethernet12\']"'
         output = self.run_script(argument)
-        self.assertEqual(output.strip(), "{'lanes': '33,34,35,36', 'description': 'Interface description', 'mtu': '9100', 'alias': 'fortyGigE0/12', 'speed': '100000', 'fec': 'rs'}")
+        self.assertEqual(output.strip(), "{'lanes': '33,34,35,36', 'fec': 'rs', 'mtu': '9100', 'alias': 'fortyGigE0/12', 'pfc_asym': 'off', 'speed': '100000', 'description': 'Interface description'}")
 
     def test_minigraph_extra_ethernet_interfaces(self):
         argument = '-m "' + self.sample_graph_simple + '" -p "' + self.port_config + '" -v "PORT"'
         output = self.run_script(argument)
 
         self.assertEqual(output.strip(), \
-            "{'Ethernet8': {'lanes': '37,38,39,40', 'description': 'Interface description', 'mtu': '9100', 'alias': 'fortyGigE0/8', 'admin_status': 'up', 'speed': '1000'}, "
-            "'Ethernet0': {'lanes': '29,30,31,32', 'description': 'fortyGigE0/0', 'mtu': '9100', 'alias': 'fortyGigE0/0', 'admin_status': 'up', 'speed': '10000'}, "
-            "'Ethernet4': {'lanes': '25,26,27,28', 'description': 'fortyGigE0/4', 'mtu': '9100', 'alias': 'fortyGigE0/4', 'admin_status': 'up', 'speed': '25000'}, "
-            "'Ethernet108': {'alias': 'fortyGigE0/108', 'lanes': '81,82,83,84', 'description': 'fortyGigE0/108', 'mtu': '9100'}, "
-            "'Ethernet100': {'alias': 'fortyGigE0/100', 'lanes': '125,126,127,128', 'description': 'fortyGigE0/100', 'mtu': '9100'}, "
-            "'Ethernet104': {'alias': 'fortyGigE0/104', 'lanes': '85,86,87,88', 'description': 'fortyGigE0/104', 'mtu': '9100'}, "
-            "'Ethernet68': {'alias': 'fortyGigE0/68', 'lanes': '69,70,71,72', 'description': 'fortyGigE0/68', 'mtu': '9100'}, "
-            "'Ethernet96': {'alias': 'fortyGigE0/96', 'lanes': '121,122,123,124', 'description': 'fortyGigE0/96', 'mtu': '9100'}, "
-            "'Ethernet124': {'alias': 'fortyGigE0/124', 'lanes': '101,102,103,104', 'description': 'fortyGigE0/124', 'mtu': '9100'}, "
-            "'Ethernet92': {'alias': 'fortyGigE0/92', 'lanes': '113,114,115,116', 'description': 'fortyGigE0/92', 'mtu': '9100'}, "
-            "'Ethernet120': {'alias': 'fortyGigE0/120', 'lanes': '97,98,99,100', 'description': 'fortyGigE0/120', 'mtu': '9100'}, "
-            "'Ethernet52': {'alias': 'fortyGigE0/52', 'lanes': '53,54,55,56', 'description': 'fortyGigE0/52', 'mtu': '9100'}, "
-            "'Ethernet56': {'alias': 'fortyGigE0/56', 'lanes': '61,62,63,64', 'description': 'fortyGigE0/56', 'mtu': '9100'}, "
-            "'Ethernet76': {'alias': 'fortyGigE0/76', 'lanes': '73,74,75,76', 'description': 'fortyGigE0/76', 'mtu': '9100'}, "
-            "'Ethernet72': {'alias': 'fortyGigE0/72', 'lanes': '77,78,79,80', 'description': 'fortyGigE0/72', 'mtu': '9100'}, "
-            "'Ethernet64': {'alias': 'fortyGigE0/64', 'lanes': '65,66,67,68', 'description': 'fortyGigE0/64', 'mtu': '9100'}, "
-            "'Ethernet32': {'alias': 'fortyGigE0/32', 'lanes': '9,10,11,12', 'description': 'fortyGigE0/32', 'mtu': '9100'}, "
-            "'Ethernet16': {'alias': 'fortyGigE0/16', 'lanes': '41,42,43,44', 'description': 'fortyGigE0/16', 'mtu': '9100'}, "
-            "'Ethernet36': {'alias': 'fortyGigE0/36', 'lanes': '13,14,15,16', 'description': 'fortyGigE0/36', 'mtu': '9100'}, "
-            "'Ethernet12': {'lanes': '33,34,35,36', 'description': 'Interface description', 'mtu': '9100', 'alias': 'fortyGigE0/12', 'speed': '100000', 'fec': 'rs'}, "
-            "'Ethernet88': {'alias': 'fortyGigE0/88', 'lanes': '117,118,119,120', 'description': 'fortyGigE0/88', 'mtu': '9100'}, "
-            "'Ethernet116': {'alias': 'fortyGigE0/116', 'lanes': '93,94,95,96', 'description': 'fortyGigE0/116', 'mtu': '9100'}, "
-            "'Ethernet80': {'alias': 'fortyGigE0/80', 'lanes': '105,106,107,108', 'description': 'fortyGigE0/80', 'mtu': '9100'}, "
-            "'Ethernet112': {'alias': 'fortyGigE0/112', 'lanes': '89,90,91,92', 'description': 'fortyGigE0/112', 'mtu': '9100'}, "
-            "'Ethernet84': {'alias': 'fortyGigE0/84', 'lanes': '109,110,111,112', 'description': 'fortyGigE0/84', 'mtu': '9100'}, "
-            "'Ethernet48': {'alias': 'fortyGigE0/48', 'lanes': '49,50,51,52', 'description': 'fortyGigE0/48', 'mtu': '9100'}, "
-            "'Ethernet44': {'alias': 'fortyGigE0/44', 'lanes': '17,18,19,20', 'description': 'fortyGigE0/44', 'mtu': '9100'}, "
-            "'Ethernet40': {'alias': 'fortyGigE0/40', 'lanes': '21,22,23,24', 'description': 'fortyGigE0/40', 'mtu': '9100'}, "
-            "'Ethernet28': {'alias': 'fortyGigE0/28', 'lanes': '1,2,3,4', 'description': 'fortyGigE0/28', 'mtu': '9100'}, "
-            "'Ethernet60': {'alias': 'fortyGigE0/60', 'lanes': '57,58,59,60', 'description': 'fortyGigE0/60', 'mtu': '9100'}, "
-            "'Ethernet20': {'alias': 'fortyGigE0/20', 'lanes': '45,46,47,48', 'description': 'fortyGigE0/20', 'mtu': '9100'}, "
-            "'Ethernet24': {'alias': 'fortyGigE0/24', 'lanes': '5,6,7,8', 'description': 'fortyGigE0/24', 'mtu': '9100'}}")
+            "{'Ethernet8': {'lanes': '37,38,39,40', 'description': 'Interface description', 'pfc_asym': 'off', 'mtu': '9100', 'alias': 'fortyGigE0/8', 'admin_status': 'up', 'speed': '1000'}, "
+            "'Ethernet0': {'lanes': '29,30,31,32', 'description': 'fortyGigE0/0', 'pfc_asym': 'off', 'mtu': '9100', 'alias': 'fortyGigE0/0', 'admin_status': 'up', 'speed': '10000'}, "
+            "'Ethernet4': {'lanes': '25,26,27,28', 'description': 'fortyGigE0/4', 'pfc_asym': 'off', 'mtu': '9100', 'alias': 'fortyGigE0/4', 'admin_status': 'up', 'speed': '25000'}, "
+            "'Ethernet108': {'alias': 'fortyGigE0/108', 'pfc_asym': 'off', 'lanes': '81,82,83,84', 'description': 'fortyGigE0/108', 'mtu': '9100'}, "
+            "'Ethernet100': {'alias': 'fortyGigE0/100', 'pfc_asym': 'off', 'lanes': '125,126,127,128', 'description': 'fortyGigE0/100', 'mtu': '9100'}, "
+            "'Ethernet104': {'alias': 'fortyGigE0/104', 'pfc_asym': 'off', 'lanes': '85,86,87,88', 'description': 'fortyGigE0/104', 'mtu': '9100'}, "
+            "'Ethernet68': {'alias': 'fortyGigE0/68', 'pfc_asym': 'off', 'lanes': '69,70,71,72', 'description': 'fortyGigE0/68', 'mtu': '9100'}, "
+            "'Ethernet96': {'alias': 'fortyGigE0/96', 'pfc_asym': 'off', 'lanes': '121,122,123,124', 'description': 'fortyGigE0/96', 'mtu': '9100'}, "
+            "'Ethernet124': {'alias': 'fortyGigE0/124', 'pfc_asym': 'off', 'lanes': '101,102,103,104', 'description': 'fortyGigE0/124', 'mtu': '9100'}, "
+            "'Ethernet92': {'alias': 'fortyGigE0/92', 'pfc_asym': 'off', 'lanes': '113,114,115,116', 'description': 'fortyGigE0/92', 'mtu': '9100'}, "
+            "'Ethernet120': {'alias': 'fortyGigE0/120', 'pfc_asym': 'off', 'lanes': '97,98,99,100', 'description': 'fortyGigE0/120', 'mtu': '9100'}, "
+            "'Ethernet52': {'alias': 'fortyGigE0/52', 'pfc_asym': 'off', 'lanes': '53,54,55,56', 'description': 'fortyGigE0/52', 'mtu': '9100'}, "
+            "'Ethernet56': {'alias': 'fortyGigE0/56', 'pfc_asym': 'off', 'lanes': '61,62,63,64', 'description': 'fortyGigE0/56', 'mtu': '9100'}, "
+            "'Ethernet76': {'alias': 'fortyGigE0/76', 'pfc_asym': 'off', 'lanes': '73,74,75,76', 'description': 'fortyGigE0/76', 'mtu': '9100'}, "
+            "'Ethernet72': {'alias': 'fortyGigE0/72', 'pfc_asym': 'off', 'lanes': '77,78,79,80', 'description': 'fortyGigE0/72', 'mtu': '9100'}, "
+            "'Ethernet64': {'alias': 'fortyGigE0/64', 'pfc_asym': 'off', 'lanes': '65,66,67,68', 'description': 'fortyGigE0/64', 'mtu': '9100'}, "
+            "'Ethernet32': {'alias': 'fortyGigE0/32', 'pfc_asym': 'off', 'lanes': '9,10,11,12', 'description': 'fortyGigE0/32', 'mtu': '9100'}, "
+            "'Ethernet16': {'alias': 'fortyGigE0/16', 'pfc_asym': 'off', 'lanes': '41,42,43,44', 'description': 'fortyGigE0/16', 'mtu': '9100'}, "
+            "'Ethernet36': {'alias': 'fortyGigE0/36', 'pfc_asym': 'off', 'lanes': '13,14,15,16', 'description': 'fortyGigE0/36', 'mtu': '9100'}, "
+            "'Ethernet12': {'lanes': '33,34,35,36', 'fec': 'rs', 'mtu': '9100', 'alias': 'fortyGigE0/12', 'pfc_asym': 'off', 'speed': '100000', 'description': 'Interface description'}, "
+            "'Ethernet88': {'alias': 'fortyGigE0/88', 'pfc_asym': 'off', 'lanes': '117,118,119,120', 'description': 'fortyGigE0/88', 'mtu': '9100'}, "
+            "'Ethernet116': {'alias': 'fortyGigE0/116', 'pfc_asym': 'off', 'lanes': '93,94,95,96', 'description': 'fortyGigE0/116', 'mtu': '9100'}, "
+            "'Ethernet80': {'alias': 'fortyGigE0/80', 'pfc_asym': 'off', 'lanes': '105,106,107,108', 'description': 'fortyGigE0/80', 'mtu': '9100'}, "
+            "'Ethernet112': {'alias': 'fortyGigE0/112', 'pfc_asym': 'off', 'lanes': '89,90,91,92', 'description': 'fortyGigE0/112', 'mtu': '9100'}, "
+            "'Ethernet84': {'alias': 'fortyGigE0/84', 'pfc_asym': 'off', 'lanes': '109,110,111,112', 'description': 'fortyGigE0/84', 'mtu': '9100'}, "
+            "'Ethernet48': {'alias': 'fortyGigE0/48', 'pfc_asym': 'off', 'lanes': '49,50,51,52', 'description': 'fortyGigE0/48', 'mtu': '9100'}, "
+            "'Ethernet44': {'alias': 'fortyGigE0/44', 'pfc_asym': 'off', 'lanes': '17,18,19,20', 'description': 'fortyGigE0/44', 'mtu': '9100'}, "
+            "'Ethernet40': {'alias': 'fortyGigE0/40', 'pfc_asym': 'off', 'lanes': '21,22,23,24', 'description': 'fortyGigE0/40', 'mtu': '9100'}, "
+            "'Ethernet28': {'alias': 'fortyGigE0/28', 'pfc_asym': 'off', 'lanes': '1,2,3,4', 'description': 'fortyGigE0/28', 'mtu': '9100'}, "
+            "'Ethernet60': {'alias': 'fortyGigE0/60', 'pfc_asym': 'off', 'lanes': '57,58,59,60', 'description': 'fortyGigE0/60', 'mtu': '9100'}, "
+            "'Ethernet20': {'alias': 'fortyGigE0/20', 'pfc_asym': 'off', 'lanes': '45,46,47,48', 'description': 'fortyGigE0/20', 'mtu': '9100'}, "
+            "'Ethernet24': {'alias': 'fortyGigE0/24', 'pfc_asym': 'off', 'lanes': '5,6,7,8', 'description': 'fortyGigE0/24', 'mtu': '9100'}}")
 
     def test_metadata_everflow(self):
         argument = '-m "' + self.sample_graph_metadata + '" -p "' + self.port_config + '" -v "MIRROR_SESSION"'