self.send_and_assert_no_replies(self.pg1, tx, "IPv6 disabled")
+class TestMPLSPIC(VppTestCase):
+ """ MPLS PIC edge convergence """
+
+ def setUp(self):
+ super(TestMPLSPIC, self).setUp()
+
+ # create 2 pg interfaces
+ self.create_pg_interfaces(range(4))
+
+ # core links
+ self.pg0.admin_up()
+ self.pg0.config_ip4()
+ self.pg0.resolve_arp()
+ self.pg0.enable_mpls()
+ self.pg1.admin_up()
+ self.pg1.config_ip4()
+ self.pg1.resolve_arp()
+ self.pg1.enable_mpls()
+
+ # VRF (customer facing) link
+ self.pg2.admin_up()
+ self.pg2.set_table_ip4(1)
+ self.pg2.config_ip4()
+ self.pg2.resolve_arp()
+ self.pg2.set_table_ip6(1)
+ self.pg2.config_ip6()
+ self.pg2.resolve_ndp()
+ self.pg3.admin_up()
+ self.pg3.set_table_ip4(1)
+ self.pg3.config_ip4()
+ self.pg3.resolve_arp()
+ self.pg3.set_table_ip6(1)
+ self.pg3.config_ip6()
+ self.pg3.resolve_ndp()
+
+ def tearDown(self):
+ super(TestMPLSPIC, self).tearDown()
+ self.pg0.disable_mpls()
+ for i in self.pg_interfaces:
+ i.unconfig_ip4()
+ i.unconfig_ip6()
+ i.set_table_ip4(0)
+ i.set_table_ip6(0)
+ i.admin_down()
+
+ def test_mpls_ibgp_pic(self):
+ """ MPLS iBGP PIC edge convergence
+
+ 1) setup many iBGP VPN routes via a pair of iBGP peers.
+ 2) Check EMCP forwarding to these peers
+ 3) withdraw the IGP route to one of these peers.
+ 4) check forwarding continues to the remaining peer
+ """
+
+ #
+ # IGP+LDP core routes
+ #
+ core_10_0_0_45 = VppIpRoute(self, "10.0.0.45", 32,
+ [VppRoutePath(self.pg0.remote_ip4,
+ self.pg0.sw_if_index,
+ labels=[45])])
+ core_10_0_0_45.add_vpp_config()
+
+ core_10_0_0_46 = VppIpRoute(self, "10.0.0.46", 32,
+ [VppRoutePath(self.pg1.remote_ip4,
+ self.pg1.sw_if_index,
+ labels=[46])])
+ core_10_0_0_46.add_vpp_config()
+
+ #
+ # Lot's of VPN routes. We need more the 64 so VPP will build
+ # the fast convergence indirection
+ #
+ vpn_routes = []
+ pkts = []
+ for ii in range(64):
+ dst = "192.168.1.%d" % ii
+ vpn_routes.append(VppIpRoute(self, dst, 32,
+ [VppRoutePath("10.0.0.45",
+ 0xffffffff,
+ labels=[145],
+ is_resolve_host=1),
+ VppRoutePath("10.0.0.46",
+ 0xffffffff,
+ labels=[146],
+ is_resolve_host=1)],
+ table_id=1))
+ vpn_routes[ii].add_vpp_config()
+
+ pkts.append(Ether(dst=self.pg2.local_mac,
+ src=self.pg2.remote_mac) /
+ IP(src=self.pg2.remote_ip4, dst=dst) /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ #
+ # Send the packet stream (one pkt to each VPN route)
+ # - expect a 50-50 split of the traffic
+ #
+ self.pg2.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx0 = self.pg0._get_capture(1)
+ rx1 = self.pg1._get_capture(1)
+
+ # not testig the LB hashing algorithm so we're not concerned
+ # with the split ratio, just as long as neither is 0
+ self.assertNotEqual(0, len(rx0))
+ self.assertNotEqual(0, len(rx1))
+
+ #
+ # use a test CLI command to stop the FIB walk process, this
+ # will prevent the FIB converging the VPN routes and thus allow
+ # us to probe the interim (psot-fail, pre-converge) state
+ #
+ self.vapi.ppcli("test fib-walk-process disable")
+
+ #
+ # Withdraw one of the IGP routes
+ #
+ core_10_0_0_46.remove_vpp_config()
+
+ #
+ # now all packets should be forwarded through the remaining peer
+ #
+ self.vapi.ppcli("clear trace")
+ self.pg2.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx0 = self.pg0.get_capture(len(pkts))
+
+ #
+ # enable the FIB walk process to converge the FIB
+ #
+ self.vapi.ppcli("test fib-walk-process enable")
+
+ #
+ # packets should still be forwarded through the remaining peer
+ #
+ self.pg2.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx0 = self.pg0.get_capture(64)
+
+ #
+ # Add the IGP route back and we return to load-balancing
+ #
+ core_10_0_0_46.add_vpp_config()
+
+ self.pg2.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx0 = self.pg0._get_capture(1)
+ rx1 = self.pg1._get_capture(1)
+ self.assertNotEqual(0, len(rx0))
+ self.assertNotEqual(0, len(rx1))
+
+ def test_mpls_ebgp_pic(self):
+ """ MPLS eBGP PIC edge convergence
+
+ 1) setup many eBGP VPN routes via a pair of eBGP peers
+ 2) Check EMCP forwarding to these peers
+ 3) withdraw one eBGP path - expect LB across remaining eBGP
+ """
+
+ #
+ # Lot's of VPN routes. We need more the 64 so VPP will build
+ # the fast convergence indirection
+ #
+ vpn_routes = []
+ vpn_bindings = []
+ pkts = []
+ for ii in range(64):
+ dst = "192.168.1.%d" % ii
+ local_label = 1600 + ii
+ vpn_routes.append(VppIpRoute(self, dst, 32,
+ [VppRoutePath(self.pg2.remote_ip4,
+ 0xffffffff,
+ nh_table_id=1,
+ is_resolve_attached=1),
+ VppRoutePath(self.pg3.remote_ip4,
+ 0xffffffff,
+ nh_table_id=1,
+ is_resolve_attached=1)],
+ table_id=1))
+ vpn_routes[ii].add_vpp_config()
+
+ vpn_bindings.append(VppMplsIpBind(self, local_label, dst, 32,
+ ip_table_id=1))
+ vpn_bindings[ii].add_vpp_config()
+
+ pkts.append(Ether(dst=self.pg0.local_mac,
+ src=self.pg0.remote_mac) /
+ MPLS(label=local_label, ttl=64) /
+ IP(src=self.pg0.remote_ip4, dst=dst) /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx0 = self.pg2._get_capture(1)
+ rx1 = self.pg3._get_capture(1)
+ self.assertNotEqual(0, len(rx0))
+ self.assertNotEqual(0, len(rx1))
+
+ #
+ # use a test CLI command to stop the FIB walk process, this
+ # will prevent the FIB converging the VPN routes and thus allow
+ # us to probe the interim (psot-fail, pre-converge) state
+ #
+ self.vapi.ppcli("test fib-walk-process disable")
+
+ #
+ # withdraw the connected prefix on the interface.
+ #
+ self.pg2.unconfig_ip4()
+
+ #
+ # now all packets should be forwarded through the remaining peer
+ #
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx0 = self.pg3.get_capture(len(pkts))
+
+ #
+ # enable the FIB walk process to converge the FIB
+ #
+ self.vapi.ppcli("test fib-walk-process enable")
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx0 = self.pg3.get_capture(len(pkts))
+
+ #
+ # put the connecteds back
+ #
+ self.pg2.config_ip4()
+
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx0 = self.pg2._get_capture(1)
+ rx1 = self.pg3._get_capture(1)
+ self.assertNotEqual(0, len(rx0))
+ self.assertNotEqual(0, len(rx1))
+
+ def test_mpls_v6_ebgp_pic(self):
+ """ MPLSv6 eBGP PIC edge convergence
+
+ 1) setup many eBGP VPNv6 routes via a pair of eBGP peers
+ 2) Check EMCP forwarding to these peers
+ 3) withdraw one eBGP path - expect LB across remaining eBGP
+ """
+
+ #
+ # Lot's of VPN routes. We need more the 64 so VPP will build
+ # the fast convergence indirection
+ #
+ vpn_routes = []
+ vpn_bindings = []
+ pkts = []
+ for ii in range(64):
+ dst = "3000::%d" % ii
+ local_label = 1600 + ii
+ vpn_routes.append(VppIpRoute(self, dst, 128,
+ [VppRoutePath(self.pg2.remote_ip6,
+ 0xffffffff,
+ nh_table_id=1,
+ is_resolve_attached=1,
+ is_ip6=1),
+ VppRoutePath(self.pg3.remote_ip6,
+ 0xffffffff,
+ nh_table_id=1,
+ is_ip6=1,
+ is_resolve_attached=1)],
+ table_id=1,
+ is_ip6=1))
+ vpn_routes[ii].add_vpp_config()
+
+ vpn_bindings.append(VppMplsIpBind(self, local_label, dst, 128,
+ ip_table_id=1,
+ is_ip6=1))
+ vpn_bindings[ii].add_vpp_config()
+
+ pkts.append(Ether(dst=self.pg0.local_mac,
+ src=self.pg0.remote_mac) /
+ MPLS(label=local_label, ttl=64) /
+ IPv6(src=self.pg0.remote_ip6, dst=dst) /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx0 = self.pg2._get_capture(1)
+ rx1 = self.pg3._get_capture(1)
+ self.assertNotEqual(0, len(rx0))
+ self.assertNotEqual(0, len(rx1))
+
+ #
+ # use a test CLI command to stop the FIB walk process, this
+ # will prevent the FIB converging the VPN routes and thus allow
+ # us to probe the interim (psot-fail, pre-converge) state
+ #
+ self.vapi.ppcli("test fib-walk-process disable")
+
+ #
+ # withdraw the connected prefix on the interface.
+ # and shutdown the interface so the ND cache is flushed.
+ #
+ self.pg2.unconfig_ip6()
+ self.pg2.admin_down()
+
+ #
+ # now all packets should be forwarded through the remaining peer
+ #
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx0 = self.pg3.get_capture(len(pkts))
+
+ #
+ # enable the FIB walk process to converge the FIB
+ #
+ self.vapi.ppcli("test fib-walk-process enable")
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx0 = self.pg3.get_capture(len(pkts))
+
+ #
+ # put the connecteds back
+ #
+ self.pg2.admin_up()
+ self.pg2.config_ip6()
+
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx0 = self.pg2._get_capture(1)
+ rx1 = self.pg3._get_capture(1)
+ self.assertNotEqual(0, len(rx0))
+ self.assertNotEqual(0, len(rx1))
+
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff