MPLS Mcast
[vpp.git] / test / test_mpls.py
index 6d5eeb2..700b709 100644 (file)
@@ -4,7 +4,10 @@ import unittest
 import socket
 
 from framework import VppTestCase, VppTestRunner
-from vpp_ip_route import IpRoute, RoutePath, MplsRoute, MplsIpBind
+from vpp_ip_route import VppIpRoute, VppRoutePath, VppMplsRoute, \
+    VppMplsIpBind, VppIpMRoute, VppMRoutePath, \
+    MRouteItfFlags, MRouteEntryFlags
+from vpp_mpls_tunnel_interface import VppMPLSTunnelInterface
 
 from scapy.packet import Raw
 from scapy.layers.l2 import Ether
@@ -12,18 +15,15 @@ from scapy.layers.inet import IP, UDP, ICMP
 from scapy.layers.inet6 import IPv6
 from scapy.contrib.mpls import MPLS
 
+
 class TestMPLS(VppTestCase):
     """ MPLS Test Case """
 
-    @classmethod
-    def setUpClass(cls):
-        super(TestMPLS, cls).setUpClass()
-
     def setUp(self):
         super(TestMPLS, self).setUp()
 
         # create 2 pg interfaces
-        self.create_pg_interfaces(range(2))
+        self.create_pg_interfaces(range(4))
 
         # setup both interfaces
         # assign them different tables.
@@ -42,13 +42,26 @@ class TestMPLS(VppTestCase):
 
     def tearDown(self):
         super(TestMPLS, self).tearDown()
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+            i.ip6_disable()
+            i.admin_down()
 
     # the default of 64 matches the IP packet TTL default
-    def create_stream_labelled_ip4(self, src_if, mpls_labels, mpls_ttl=255, ping=0, ip_itf=None):
+    def create_stream_labelled_ip4(
+            self,
+            src_if,
+            mpls_labels,
+            mpls_ttl=255,
+            ping=0,
+            ip_itf=None,
+            dst_ip=None,
+            n=257):
+        self.reset_packet_infos()
         pkts = []
-        for i in range(0, 257):
-            info = self.create_packet_info(src_if.sw_if_index,
-                                           src_if.sw_if_index)
+        for i in range(0, n):
+            info = self.create_packet_info(src_if, src_if)
             payload = self.info_to_payload(info)
             p = Ether(dst=src_if.local_mac, src=src_if.remote_mac)
 
@@ -58,9 +71,14 @@ class TestMPLS(VppTestCase):
                 else:
                     p = p / MPLS(label=mpls_labels[ii], ttl=mpls_ttl, s=0)
             if not ping:
-                p = (p / IP(src=src_if.local_ip4, dst=src_if.remote_ip4) /
-                     UDP(sport=1234, dport=1234) /
-                     Raw(payload))
+                if not dst_ip:
+                    p = (p / IP(src=src_if.local_ip4, dst=src_if.remote_ip4) /
+                         UDP(sport=1234, dport=1234) /
+                         Raw(payload))
+                else:
+                    p = (p / IP(src=src_if.local_ip4, dst=dst_ip) /
+                         UDP(sport=1234, dport=1234) /
+                         Raw(payload))
             else:
                 p = (p / IP(src=ip_itf.remote_ip4,
                             dst=ip_itf.local_ip4) /
@@ -71,10 +89,10 @@ class TestMPLS(VppTestCase):
         return pkts
 
     def create_stream_ip4(self, src_if, dst_ip):
+        self.reset_packet_infos()
         pkts = []
         for i in range(0, 257):
-            info = self.create_packet_info(src_if.sw_if_index,
-                                           src_if.sw_if_index)
+            info = self.create_packet_info(src_if, src_if)
             payload = self.info_to_payload(info)
             p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
                  IP(src=src_if.remote_ip4, dst=dst_ip) /
@@ -85,10 +103,10 @@ class TestMPLS(VppTestCase):
         return pkts
 
     def create_stream_labelled_ip6(self, src_if, mpls_label, mpls_ttl):
+        self.reset_packet_infos()
         pkts = []
         for i in range(0, 257):
-            info = self.create_packet_info(src_if.sw_if_index,
-                                           src_if.sw_if_index)
+            info = self.create_packet_info(src_if, src_if)
             payload = self.info_to_payload(info)
             p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
                  MPLS(label=mpls_label, ttl=mpls_ttl) /
@@ -245,16 +263,23 @@ class TestMPLS(VppTestCase):
         except:
             raise
 
+    def send_and_assert_no_replies(self, intf, pkts, remark):
+        intf.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        for i in self.pg_interfaces:
+            i.assert_nothing_captured(remark=remark)
+
     def test_swap(self):
         """ MPLS label swap tests """
 
         #
         # A simple MPLS xconnect - eos label in label out
         #
-        route_32_eos = MplsRoute(self, 32, 1,
-                                 [RoutePath(self.pg0.remote_ip4,
-                                            self.pg0.sw_if_index,
-                                            labels=[33])])
+        route_32_eos = VppMplsRoute(self, 32, 1,
+                                    [VppRoutePath(self.pg0.remote_ip4,
+                                                  self.pg0.sw_if_index,
+                                                  labels=[33])])
         route_32_eos.add_vpp_config()
 
         #
@@ -269,15 +294,15 @@ class TestMPLS(VppTestCase):
         self.pg_start()
 
         rx = self.pg0.get_capture()
-        self.verify_capture_labelled_ip4(self.pg0, rx, tx, [33])
+        self.verify_capture_labelled(self.pg0, rx, tx, [33])
 
         #
         # A simple MPLS xconnect - non-eos label in label out
         #
-        route_32_neos = MplsRoute(self, 32, 0,
-                                  [RoutePath(self.pg0.remote_ip4,
-                                             self.pg0.sw_if_index,
-                                             labels=[33])])
+        route_32_neos = VppMplsRoute(self, 32, 0,
+                                     [VppRoutePath(self.pg0.remote_ip4,
+                                                   self.pg0.sw_if_index,
+                                                   labels=[33])])
         route_32_neos.add_vpp_config()
 
         #
@@ -297,10 +322,10 @@ class TestMPLS(VppTestCase):
         #
         # An MPLS xconnect - EOS label in IP out
         #
-        route_33_eos = MplsRoute(self, 33, 1,
-                                 [RoutePath(self.pg0.remote_ip4,
-                                            self.pg0.sw_if_index,
-                                            labels=[])])
+        route_33_eos = VppMplsRoute(self, 33, 1,
+                                    [VppRoutePath(self.pg0.remote_ip4,
+                                                  self.pg0.sw_if_index,
+                                                  labels=[])])
         route_33_eos.add_vpp_config()
 
         self.vapi.cli("clear trace")
@@ -317,10 +342,10 @@ class TestMPLS(VppTestCase):
         # An MPLS xconnect - non-EOS label in IP out - an invalid configuration
         # so this traffic should be dropped.
         #
-        route_33_neos = MplsRoute(self, 33, 0,
-                                  [RoutePath(self.pg0.remote_ip4,
-                                             self.pg0.sw_if_index,
-                                             labels=[])])
+        route_33_neos = VppMplsRoute(self, 33, 0,
+                                     [VppRoutePath(self.pg0.remote_ip4,
+                                                   self.pg0.sw_if_index,
+                                                   labels=[])])
         route_33_neos.add_vpp_config()
 
         self.vapi.cli("clear trace")
@@ -335,14 +360,13 @@ class TestMPLS(VppTestCase):
         #
         # A recursive EOS x-connect, which resolves through another x-connect
         #
-        route_34_eos = MplsRoute(self, 34, 1,
-                                 [RoutePath("0.0.0.0",
-                                            0xffffffff,
-                                            nh_via_label=32,
-                                            labels=[44, 45])])
+        route_34_eos = VppMplsRoute(self, 34, 1,
+                                    [VppRoutePath("0.0.0.0",
+                                                  0xffffffff,
+                                                  nh_via_label=32,
+                                                  labels=[44, 45])])
         route_34_eos.add_vpp_config()
 
-        self.vapi.cli("clear trace")
         tx = self.create_stream_labelled_ip4(self.pg0, [34])
         self.pg0.add_stream(tx)
 
@@ -350,17 +374,17 @@ class TestMPLS(VppTestCase):
         self.pg_start()
 
         rx = self.pg0.get_capture()
-        self.verify_capture_labelled_ip4(self.pg0, rx, tx, [33, 44, 45])
+        self.verify_capture_labelled(self.pg0, rx, tx, [33, 44, 45], num=2)
 
         #
         # A recursive non-EOS x-connect, which resolves through another
         # x-connect
         #
-        route_34_neos = MplsRoute(self, 34, 0,
-                                  [RoutePath("0.0.0.0",
-                                             0xffffffff,
-                                             nh_via_label=32,
-                                             labels=[44, 46])])
+        route_34_neos = VppMplsRoute(self, 34, 0,
+                                     [VppRoutePath("0.0.0.0",
+                                                   0xffffffff,
+                                                   nh_via_label=32,
+                                                   labels=[44, 46])])
         route_34_neos.add_vpp_config()
 
         self.vapi.cli("clear trace")
@@ -378,11 +402,11 @@ class TestMPLS(VppTestCase):
         # an recursive IP route that resolves through the recursive non-eos
         # x-connect
         #
-        ip_10_0_0_1 = IpRoute(self, "10.0.0.1", 32,
-                              [RoutePath("0.0.0.0",
-                                         0xffffffff,
-                                         nh_via_label=34,
-                                         labels=[55])])
+        ip_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32,
+                                 [VppRoutePath("0.0.0.0",
+                                               0xffffffff,
+                                               nh_via_label=34,
+                                               labels=[55])])
         ip_10_0_0_1.add_vpp_config()
 
         self.vapi.cli("clear trace")
@@ -409,14 +433,14 @@ class TestMPLS(VppTestCase):
         #
         # Add a non-recursive route with a single out label
         #
-        route_10_0_0_1 = IpRoute(self, "10.0.0.1", 32,
-                                 [RoutePath(self.pg0.remote_ip4,
-                                            self.pg0.sw_if_index,
-                                            labels=[45])])
+        route_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32,
+                                    [VppRoutePath(self.pg0.remote_ip4,
+                                                  self.pg0.sw_if_index,
+                                                  labels=[45])])
         route_10_0_0_1.add_vpp_config()
 
         # bind a local label to the route
-        binding = MplsIpBind(self, 44, "10.0.0.1", 32)
+        binding = VppMplsIpBind(self, 44, "10.0.0.1", 32)
         binding.add_vpp_config()
 
         # non-EOS stream
@@ -464,10 +488,10 @@ class TestMPLS(VppTestCase):
         #
         # Add a non-recursive route with a single out label
         #
-        route_10_0_0_1 = IpRoute(self, "10.0.0.1", 32,
-                                 [RoutePath(self.pg0.remote_ip4,
-                                            self.pg0.sw_if_index,
-                                            labels=[32])])
+        route_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32,
+                                    [VppRoutePath(self.pg0.remote_ip4,
+                                                  self.pg0.sw_if_index,
+                                                  labels=[32])])
         route_10_0_0_1.add_vpp_config()
 
         #
@@ -487,10 +511,10 @@ class TestMPLS(VppTestCase):
         #
         # Add a non-recursive route with a 3 out labels
         #
-        route_10_0_0_2 = IpRoute(self, "10.0.0.2", 32,
-                                 [RoutePath(self.pg0.remote_ip4,
-                                            self.pg0.sw_if_index,
-                                            labels=[32, 33, 34])])
+        route_10_0_0_2 = VppIpRoute(self, "10.0.0.2", 32,
+                                    [VppRoutePath(self.pg0.remote_ip4,
+                                                  self.pg0.sw_if_index,
+                                                  labels=[32, 33, 34])])
         route_10_0_0_2.add_vpp_config()
 
         #
@@ -510,10 +534,10 @@ class TestMPLS(VppTestCase):
         #
         # add a recursive path, with output label, via the 1 label route
         #
-        route_11_0_0_1 = IpRoute(self, "11.0.0.1", 32,
-                                 [RoutePath("10.0.0.1",
-                                            0xffffffff,
-                                            labels=[44])])
+        route_11_0_0_1 = VppIpRoute(self, "11.0.0.1", 32,
+                                    [VppRoutePath("10.0.0.1",
+                                                  0xffffffff,
+                                                  labels=[44])])
         route_11_0_0_1.add_vpp_config()
 
         #
@@ -533,10 +557,10 @@ class TestMPLS(VppTestCase):
         #
         # add a recursive path, with 2 labels, via the 3 label route
         #
-        route_11_0_0_2 = IpRoute(self, "11.0.0.2", 32,
-                                 [RoutePath("10.0.0.2",
-                                            0xffffffff,
-                                            labels=[44, 45])])
+        route_11_0_0_2 = VppIpRoute(self, "11.0.0.2", 32,
+                                    [VppRoutePath("10.0.0.2",
+                                                  0xffffffff,
+                                                  labels=[44, 45])])
         route_11_0_0_2.add_vpp_config()
 
         #
@@ -568,36 +592,20 @@ class TestMPLS(VppTestCase):
         #
         # Create a tunnel with a single out label
         #
-        nh_addr = socket.inet_pton(socket.AF_INET, self.pg0.remote_ip4)
-
-        reply = self.vapi.mpls_tunnel_add_del(
-            0xffffffff,  # don't know the if index yet
-            1,  # IPv4 next-hop
-            nh_addr,
-            self.pg0.sw_if_index,
-            0,  # next-hop-table-id
-            1,  # next-hop-weight
-            2,  # num-out-labels,
-            [44, 46])
-        self.vapi.sw_interface_set_flags(reply.sw_if_index, admin_up_down=1)
+        mpls_tun = VppMPLSTunnelInterface(self,
+                                          [VppRoutePath(self.pg0.remote_ip4,
+                                                        self.pg0.sw_if_index,
+                                                        labels=[44, 46])])
+        mpls_tun.add_vpp_config()
+        mpls_tun.admin_up()
 
         #
         # add an unlabelled route through the new tunnel
         #
-        dest_addr = socket.inet_pton(socket.AF_INET, "10.0.0.3")
-        nh_addr = socket.inet_pton(socket.AF_INET, "0.0.0.0")
-        dest_addr_len = 32
-
-        self.vapi.ip_add_del_route(
-            dest_addr,
-            dest_addr_len,
-            nh_addr,  # all zeros next-hop - tunnel is p2p
-            reply.sw_if_index,  # sw_if_index of the new tunnel
-            0,  # table-id
-            0,  # next-hop-table-id
-            1,  # next-hop-weight
-            0,  # num-out-labels,
-            [])  # out-label
+        route_10_0_0_3 = VppIpRoute(self, "10.0.0.3", 32,
+                                    [VppRoutePath("0.0.0.0",
+                                                  mpls_tun._sw_if_index)])
+        route_10_0_0_3.add_vpp_config()
 
         self.vapi.cli("clear trace")
         tx = self.create_stream_ip4(self.pg0, "10.0.0.3")
@@ -628,7 +636,6 @@ class TestMPLS(VppTestCase):
         # a stream with a non-zero MPLS TTL
         # PG0 is in the default table
         #
-        self.vapi.cli("clear trace")
         tx = self.create_stream_labelled_ip4(self.pg0, [0])
         self.pg0.add_stream(tx)
 
@@ -691,10 +698,10 @@ class TestMPLS(VppTestCase):
         #
         # A de-agg route - next-hop lookup in default table
         #
-        route_34_eos = MplsRoute(self, 34, 1,
-                                  [RoutePath("0.0.0.0",
-                                             0xffffffff,
-                                             nh_table_id=0)])
+        route_34_eos = VppMplsRoute(self, 34, 1,
+                                    [VppRoutePath("0.0.0.0",
+                                                  0xffffffff,
+                                                  nh_table_id=0)])
         route_34_eos.add_vpp_config()
 
         #
@@ -715,10 +722,10 @@ class TestMPLS(VppTestCase):
         #
         # A de-agg route - next-hop lookup in non-default table
         #
-        route_35_eos = MplsRoute(self, 35, 1,
-                                  [RoutePath("0.0.0.0",
-                                             0xffffffff,
-                                             nh_table_id=1)])
+        route_35_eos = VppMplsRoute(self, 35, 1,
+                                    [VppRoutePath("0.0.0.0",
+                                                  0xffffffff,
+                                                  nh_table_id=1)])
         route_35_eos.add_vpp_config()
 
         #
@@ -727,17 +734,325 @@ class TestMPLS(VppTestCase):
         # default table and egress unlabelled in the non-default
         #
         self.vapi.cli("clear trace")
-        tx = self.create_stream_labelled_ip4(self.pg0, [35], ping=1, ip_itf=self.pg1)
+        tx = self.create_stream_labelled_ip4(
+            self.pg0, [35], ping=1, ip_itf=self.pg1)
         self.pg0.add_stream(tx)
 
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
 
-        rx = self.pg1.get_capture()
+        packet_count = self.get_packet_count_for_if_idx(self.pg0.sw_if_index)
+        rx = self.pg1.get_capture(packet_count)
         self.verify_capture_ip4(self.pg1, rx, tx, ping_resp=1)
 
         route_35_eos.remove_vpp_config()
         route_34_eos.remove_vpp_config()
 
+    def test_interface_rx(self):
+        """ MPLS Interface Receive """
+
+        #
+        # Add a non-recursive route that will forward the traffic
+        # post-interface-rx
+        #
+        route_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32,
+                                    table_id=1,
+                                    paths=[VppRoutePath(self.pg1.remote_ip4,
+                                                        self.pg1.sw_if_index)])
+        route_10_0_0_1.add_vpp_config()
+
+        #
+        # An interface receive label that maps traffic to RX on interface
+        # pg1
+        # by injecting the packet in on pg0, which is in table 0
+        # doing an interface-rx on pg1 and matching a route in table 1
+        # if the packet egresses, then we must have swapped to pg1
+        # so as to have matched the route in table 1
+        #
+        route_34_eos = VppMplsRoute(self, 34, 1,
+                                    [VppRoutePath("0.0.0.0",
+                                                  self.pg1.sw_if_index,
+                                                  is_interface_rx=1)])
+        route_34_eos.add_vpp_config()
+
+        #
+        # ping an interface in the default table
+        # PG0 is in the default table
+        #
+        self.vapi.cli("clear trace")
+        tx = self.create_stream_labelled_ip4(self.pg0, [34], n=257,
+                                             dst_ip="10.0.0.1")
+        self.pg0.add_stream(tx)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(257)
+        self.verify_capture_ip4(self.pg1, rx, tx)
+
+    def test_mcast_mid_point(self):
+        """ MPLS Multicast Mid Point """
+
+        #
+        # Add a non-recursive route that will forward the traffic
+        # post-interface-rx
+        #
+        route_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32,
+                                    table_id=1,
+                                    paths=[VppRoutePath(self.pg1.remote_ip4,
+                                                        self.pg1.sw_if_index)])
+        route_10_0_0_1.add_vpp_config()
+
+        #
+        # Add a mcast entry that replicate to pg2 and pg3
+        # and replicate to a interface-rx (like a bud node would)
+        #
+        route_3400_eos = VppMplsRoute(self, 3400, 1,
+                                      [VppRoutePath(self.pg2.remote_ip4,
+                                                    self.pg2.sw_if_index,
+                                                    labels=[3401]),
+                                       VppRoutePath(self.pg3.remote_ip4,
+                                                    self.pg3.sw_if_index,
+                                                    labels=[3402]),
+                                       VppRoutePath("0.0.0.0",
+                                                    self.pg1.sw_if_index,
+                                                    is_interface_rx=1)],
+                                      is_multicast=1)
+        route_3400_eos.add_vpp_config()
+
+        #
+        # ping an interface in the default table
+        # PG0 is in the default table
+        #
+        self.vapi.cli("clear trace")
+        tx = self.create_stream_labelled_ip4(self.pg0, [3400], n=257,
+                                             dst_ip="10.0.0.1")
+        self.pg0.add_stream(tx)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(257)
+        self.verify_capture_ip4(self.pg1, rx, tx)
+
+        rx = self.pg2.get_capture(257)
+        self.verify_capture_labelled(self.pg2, rx, tx, [3401])
+        rx = self.pg3.get_capture(257)
+        self.verify_capture_labelled(self.pg3, rx, tx, [3402])
+
+    def test_mcast_head(self):
+        """ MPLS Multicast Head-end """
+
+        #
+        # Create a multicast tunnel with two replications
+        #
+        mpls_tun = VppMPLSTunnelInterface(self,
+                                          [VppRoutePath(self.pg2.remote_ip4,
+                                                        self.pg2.sw_if_index,
+                                                        labels=[42]),
+                                           VppRoutePath(self.pg3.remote_ip4,
+                                                        self.pg3.sw_if_index,
+                                                        labels=[43])],
+                                          is_multicast=1)
+        mpls_tun.add_vpp_config()
+        mpls_tun.admin_up()
+
+        #
+        # add an unlabelled route through the new tunnel
+        #
+        route_10_0_0_3 = VppIpRoute(self, "10.0.0.3", 32,
+                                    [VppRoutePath("0.0.0.0",
+                                                  mpls_tun._sw_if_index)])
+        route_10_0_0_3.add_vpp_config()
+
+        self.vapi.cli("clear trace")
+        tx = self.create_stream_ip4(self.pg0, "10.0.0.3")
+        self.pg0.add_stream(tx)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg2.get_capture(257)
+        self.verify_capture_tunneled_ip4(self.pg0, rx, tx, [42])
+        rx = self.pg3.get_capture(257)
+        self.verify_capture_tunneled_ip4(self.pg0, rx, tx, [43])
+
+        #
+        # An an IP multicast route via the tunnel
+        # A (*,G).
+        # one accepting interface, pg0, 1 forwarding interface via the tunnel
+        #
+        route_232_1_1_1 = VppIpMRoute(
+            self,
+            "0.0.0.0",
+            "232.1.1.1", 32,
+            MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
+            [VppMRoutePath(self.pg0.sw_if_index,
+                           MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
+             VppMRoutePath(mpls_tun._sw_if_index,
+                           MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
+        route_232_1_1_1.add_vpp_config()
+
+        self.vapi.cli("clear trace")
+        tx = self.create_stream_ip4(self.pg0, "232.1.1.1")
+        self.pg0.add_stream(tx)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg2.get_capture(257)
+        self.verify_capture_tunneled_ip4(self.pg0, rx, tx, [42])
+        rx = self.pg3.get_capture(257)
+        self.verify_capture_tunneled_ip4(self.pg0, rx, tx, [43])
+
+    def test_mcast_tail(self):
+        """ MPLS Multicast Tail """
+
+        #
+        # Add a multicast route that will forward the traffic
+        # post-disposition
+        #
+        route_232_1_1_1 = VppIpMRoute(
+            self,
+            "0.0.0.0",
+            "232.1.1.1", 32,
+            MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
+            table_id=1,
+            paths=[VppMRoutePath(self.pg1.sw_if_index,
+                                 MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
+        route_232_1_1_1.add_vpp_config()
+
+        #
+        # An interface receive label that maps traffic to RX on interface
+        # pg1
+        # by injecting the packet in on pg0, which is in table 0
+        # doing an rpf-id  and matching a route in table 1
+        # if the packet egresses, then we must have matched the route in
+        # table 1
+        #
+        route_34_eos = VppMplsRoute(self, 34, 1,
+                                    [VppRoutePath("0.0.0.0",
+                                                  self.pg1.sw_if_index,
+                                                  nh_table_id=1,
+                                                  rpf_id=55)],
+                                    is_multicast=1)
+
+        route_34_eos.add_vpp_config()
+
+        #
+        # Drop due to interface lookup miss
+        #
+        self.vapi.cli("clear trace")
+        tx = self.create_stream_labelled_ip4(self.pg0, [34],
+                                             dst_ip="232.1.1.1", n=1)
+        self.send_and_assert_no_replies(self.pg0, tx, "RPF-ID drop none")
+
+        #
+        # set the RPF-ID of the enrtry to match the input packet's
+        #
+        route_232_1_1_1.update_rpf_id(55)
+
+        self.vapi.cli("clear trace")
+        tx = self.create_stream_labelled_ip4(self.pg0, [34],
+                                             dst_ip="232.1.1.1", n=257)
+        self.pg0.add_stream(tx)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg1.get_capture(257)
+        self.verify_capture_ip4(self.pg1, rx, tx)
+
+        #
+        # set the RPF-ID of the enrtry to not match the input packet's
+        #
+        route_232_1_1_1.update_rpf_id(56)
+        tx = self.create_stream_labelled_ip4(self.pg0, [34],
+                                             dst_ip="232.1.1.1")
+        self.send_and_assert_no_replies(self.pg0, tx, "RPF-ID drop 56")
+
+
+class TestMPLSDisabled(VppTestCase):
+    """ MPLS disabled """
+
+    def setUp(self):
+        super(TestMPLSDisabled, self).setUp()
+
+        # create 2 pg interfaces
+        self.create_pg_interfaces(range(2))
+
+        # PG0 is MPLS enalbed
+        self.pg0.admin_up()
+        self.pg0.config_ip4()
+        self.pg0.resolve_arp()
+        self.pg0.enable_mpls()
+
+        # PG 1 is not MPLS enabled
+        self.pg1.admin_up()
+
+    def tearDown(self):
+        super(TestMPLSDisabled, self).tearDown()
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.admin_down()
+
+    def send_and_assert_no_replies(self, intf, pkts, remark):
+        intf.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        for i in self.pg_interfaces:
+            i.get_capture(0)
+            i.assert_nothing_captured(remark=remark)
+
+    def test_mpls_disabled(self):
+        """ MPLS Disabled """
+
+        tx = (Ether(src=self.pg1.remote_mac,
+                    dst=self.pg1.local_mac) /
+              MPLS(label=32, ttl=64) /
+              IPv6(src="2001::1", dst=self.pg0.remote_ip6) /
+              UDP(sport=1234, dport=1234) /
+              Raw('\xa5' * 100))
+
+        #
+        # A simple MPLS xconnect - eos label in label out
+        #
+        route_32_eos = VppMplsRoute(self, 32, 1,
+                                    [VppRoutePath(self.pg0.remote_ip4,
+                                                  self.pg0.sw_if_index,
+                                                  labels=[33])])
+        route_32_eos.add_vpp_config()
+
+        #
+        # PG1 does not forward IP traffic
+        #
+        self.send_and_assert_no_replies(self.pg1, tx, "MPLS disabled")
+
+        #
+        # MPLS enable PG1
+        #
+        self.pg1.enable_mpls()
+
+        #
+        # Now we get packets through
+        #
+        self.pg1.add_stream(tx)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        rx = self.pg0.get_capture(1)
+
+        #
+        # Disable PG1
+        #
+        self.pg1.disable_mpls()
+
+        #
+        # PG1 does not forward IP traffic
+        #
+        self.send_and_assert_no_replies(self.pg1, tx, "IPv6 disabled")
+        self.send_and_assert_no_replies(self.pg1, tx, "IPv6 disabled")
+
+
 if __name__ == '__main__':
     unittest.main(testRunner=VppTestRunner)