Merge pull request #4112 from pguibert6WIND/bfd_vrf

support for BFD VRF

28 files changed, 745 insertions, 0 deletions

diff --git a/tests/topotests/bfd-vrf-topo1/__init__.py b/tests/topotests/bfd-vrf-topo1/__init__.py
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/__init__.py
diff --git a/tests/topotests/bfd-vrf-topo1/r1/bfdd.conf b/tests/topotests/bfd-vrf-topo1/r1/bfdd.conf
new file mode 100644
index 000000000..3466e6a3c
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r1/bfdd.conf
@@ -0,0 +1,6 @@
+bfd
+ peer 192.168.0.2 vrf r1-cust1
+  echo-mode
+  no shutdown
+ !
+!
diff --git a/tests/topotests/bfd-vrf-topo1/r1/bgp_prefixes.json b/tests/topotests/bfd-vrf-topo1/r1/bgp_prefixes.json
new file mode 100644
index 000000000..4b2cc1ad6
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r1/bgp_prefixes.json
@@ -0,0 +1,52 @@
+{
+  "routes": {
+    "10.254.254.2/32": [
+      {
+        "aspath": "102",
+        "prefix": "10.254.254.2",
+        "valid": true,
+        "peerId": "192.168.0.2",
+        "prefixLen": 32,
+        "nexthops": [
+          {
+            "ip": "192.168.0.2",
+            "used": true,
+            "afi": "ipv4"
+          }
+        ]
+      }
+    ],
+    "10.254.254.3/32": [
+      {
+        "aspath": "102 103",
+        "prefix": "10.254.254.3",
+        "valid": true,
+        "peerId": "192.168.0.2",
+        "prefixLen": 32,
+        "nexthops": [
+          {
+            "ip": "192.168.0.2",
+            "used": true,
+            "afi": "ipv4"
+          }
+        ]
+      }
+    ],
+    "10.254.254.4/32": [
+      {
+        "aspath": "102 104",
+        "prefix": "10.254.254.4",
+        "valid": true,
+        "peerId": "192.168.0.2",
+        "prefixLen": 32,
+        "nexthops": [
+          {
+            "ip": "192.168.0.2",
+            "used": true,
+            "afi": "ipv4"
+          }
+        ]
+      }
+    ]
+  }
+}
diff --git a/tests/topotests/bfd-vrf-topo1/r1/bgp_summary.json b/tests/topotests/bfd-vrf-topo1/r1/bgp_summary.json
new file mode 100644
index 000000000..fa07d60df
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r1/bgp_summary.json
@@ -0,0 +1,11 @@
+{
+  "ipv4Unicast": {
+    "as": 101,
+    "peers": {
+      "192.168.0.2": {
+        "remoteAs": 102,
+        "state": "Established"
+      }
+    }
+  }
+}
diff --git a/tests/topotests/bfd-vrf-topo1/r1/bgpd.conf b/tests/topotests/bfd-vrf-topo1/r1/bgpd.conf
new file mode 100644
index 000000000..7ad4e2bd7
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r1/bgpd.conf
@@ -0,0 +1,8 @@
+router bgp 101 vrf r1-cust1
+ neighbor 192.168.0.2 remote-as 102
+! neighbor 192.168.0.2 ebgp-multihop 10
+ neighbor 192.168.0.2 bfd
+ address-family ipv4 unicast
+  network 10.254.254.1/32
+ exit-address-family
+!
diff --git a/tests/topotests/bfd-vrf-topo1/r1/peers.json b/tests/topotests/bfd-vrf-topo1/r1/peers.json
new file mode 100644
index 000000000..f49768ff7
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r1/peers.json
@@ -0,0 +1,8 @@
+[
+  {
+    "remote-receive-interval": 1000,
+    "remote-transmit-interval": 500,
+    "peer": "192.168.0.2",
+    "status": "up"
+  }
+]
diff --git a/tests/topotests/bfd-vrf-topo1/r1/zebra.conf b/tests/topotests/bfd-vrf-topo1/r1/zebra.conf
new file mode 100644
index 000000000..fcd1e7db1
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r1/zebra.conf
@@ -0,0 +1,3 @@
+interface r1-eth0 vrf r1-cust1
+ ip address 192.168.0.1/24
+!
diff --git a/tests/topotests/bfd-vrf-topo1/r2/bfdd.conf b/tests/topotests/bfd-vrf-topo1/r2/bfdd.conf
new file mode 100644
index 000000000..3481ea8c8
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r2/bfdd.conf
@@ -0,0 +1,12 @@
+bfd
+ peer 192.168.0.1 vrf r2-cust1
+  receive-interval 1000
+  transmit-interval 500
+  echo-mode
+  no shutdown
+ !
+ peer 192.168.1.1 vrf r2-cust1
+  echo-mode
+  no shutdown
+ !
+!
diff --git a/tests/topotests/bfd-vrf-topo1/r2/bgp_prefixes.json b/tests/topotests/bfd-vrf-topo1/r2/bgp_prefixes.json
new file mode 100644
index 000000000..39f3c0a83
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r2/bgp_prefixes.json
@@ -0,0 +1,52 @@
+{
+  "routes": {
+    "10.254.254.1/32": [
+      {
+        "aspath": "101",
+        "prefix": "10.254.254.1",
+        "valid": true,
+        "peerId": "192.168.0.1",
+        "prefixLen": 32,
+        "nexthops": [
+          {
+            "ip": "192.168.0.1",
+            "used": true,
+            "afi": "ipv4"
+          }
+        ]
+      }
+    ],
+    "10.254.254.3/32": [
+      {
+        "aspath": "103",
+        "prefix": "10.254.254.3",
+        "valid": true,
+        "peerId": "192.168.1.1",
+        "prefixLen": 32,
+        "nexthops": [
+          {
+            "ip": "192.168.1.1",
+            "used": true,
+            "afi": "ipv4"
+          }
+        ]
+      }
+    ],
+    "10.254.254.4/32": [
+      {
+        "aspath": "104",
+        "prefix": "10.254.254.4",
+        "valid": true,
+        "peerId": "192.168.2.1",
+        "prefixLen": 32,
+        "nexthops": [
+          {
+            "ip": "192.168.2.1",
+            "used": true,
+            "afi": "ipv4"
+          }
+        ]
+      }
+    ]
+  }
+}
diff --git a/tests/topotests/bfd-vrf-topo1/r2/bgp_summary.json b/tests/topotests/bfd-vrf-topo1/r2/bgp_summary.json
new file mode 100644
index 000000000..c0ef11ac5
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r2/bgp_summary.json
@@ -0,0 +1,19 @@
+{
+  "ipv4Unicast": {
+    "as": 102,
+    "peers": {
+      "192.168.0.1": {
+        "remoteAs": 101,
+        "state": "Established"
+      },
+      "192.168.1.1": {
+        "remoteAs": 103,
+        "state": "Established"
+      },
+      "192.168.2.1": {
+        "remoteAs": 104,
+        "state": "Established"
+      }
+    }
+  }
+}
diff --git a/tests/topotests/bfd-vrf-topo1/r2/bgpd.conf b/tests/topotests/bfd-vrf-topo1/r2/bgpd.conf
new file mode 100644
index 000000000..0715ea32a
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r2/bgpd.conf
@@ -0,0 +1,11 @@
+router bgp 102 vrf r2-cust1
+ neighbor 192.168.0.1 remote-as 101
+ neighbor 192.168.0.1 bfd
+ neighbor 192.168.1.1 remote-as 103
+ neighbor 192.168.1.1 bfd
+ neighbor 192.168.2.1 remote-as 104
+ neighbor 192.168.2.1 bfd
+ address-family ipv4 unicast
+  network 10.254.254.2/32
+ exit-address-family
+!
diff --git a/tests/topotests/bfd-vrf-topo1/r2/peers.json b/tests/topotests/bfd-vrf-topo1/r2/peers.json
new file mode 100644
index 000000000..5035d643c
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r2/peers.json
@@ -0,0 +1,17 @@
+[
+  {
+    "peer": "192.168.0.1",
+    "status": "up"
+  },
+  {
+    "remote-echo-interval": 100,
+    "peer": "192.168.1.1",
+    "status": "up"
+  },
+  {
+    "remote-transmit-interval": 2000,
+    "remote-receive-interval": 2000,
+    "peer": "192.168.2.1",
+    "status": "up"
+  }
+]
diff --git a/tests/topotests/bfd-vrf-topo1/r2/zebra.conf b/tests/topotests/bfd-vrf-topo1/r2/zebra.conf
new file mode 100644
index 000000000..daffd1912
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r2/zebra.conf
@@ -0,0 +1,9 @@
+interface r2-eth0 vrf r2-cust1
+ ip address 192.168.0.2/24
+!
+interface r2-eth1 vrf r2-cust1
+ ip address 192.168.1.2/24
+!
+interface r2-eth2 vrf r2-cust1
+ ip address 192.168.2.2/24
+!
diff --git a/tests/topotests/bfd-vrf-topo1/r3/bfdd.conf b/tests/topotests/bfd-vrf-topo1/r3/bfdd.conf
new file mode 100644
index 000000000..f6921b781
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r3/bfdd.conf
@@ -0,0 +1,7 @@
+bfd
+ peer 192.168.1.2 vrf r3-cust1
+  echo-interval 100
+  echo-mode
+  no shutdown
+ !
+!
diff --git a/tests/topotests/bfd-vrf-topo1/r3/bgp_prefixes.json b/tests/topotests/bfd-vrf-topo1/r3/bgp_prefixes.json
new file mode 100644
index 000000000..c92d4e052
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r3/bgp_prefixes.json
@@ -0,0 +1,52 @@
+{
+  "routes": {
+    "10.254.254.1/32": [
+      {
+        "aspath": "102 101",
+        "prefix": "10.254.254.1",
+        "valid": true,
+        "peerId": "192.168.1.2",
+        "prefixLen": 32,
+        "nexthops": [
+          {
+            "ip": "192.168.1.2",
+            "used": true,
+            "afi": "ipv4"
+          }
+        ]
+      }
+    ],
+    "10.254.254.2/32": [
+      {
+        "aspath": "102",
+        "prefix": "10.254.254.2",
+        "valid": true,
+        "peerId": "192.168.1.2",
+        "prefixLen": 32,
+        "nexthops": [
+          {
+            "ip": "192.168.1.2",
+            "used": true,
+            "afi": "ipv4"
+          }
+        ]
+      }
+    ],
+    "10.254.254.4/32": [
+      {
+        "aspath": "102 104",
+        "prefix": "10.254.254.4",
+        "valid": true,
+        "peerId": "192.168.1.2",
+        "prefixLen": 32,
+        "nexthops": [
+          {
+            "ip": "192.168.1.2",
+            "used": true,
+            "afi": "ipv4"
+          }
+        ]
+      }
+    ]
+  }
+}
diff --git a/tests/topotests/bfd-vrf-topo1/r3/bgp_summary.json b/tests/topotests/bfd-vrf-topo1/r3/bgp_summary.json
new file mode 100644
index 000000000..d47833377
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r3/bgp_summary.json
@@ -0,0 +1,11 @@
+{
+  "ipv4Unicast": {
+    "as": 103,
+    "peers": {
+      "192.168.1.2": {
+        "remoteAs": 102,
+        "state": "Established"
+      }
+    }
+  }
+}
diff --git a/tests/topotests/bfd-vrf-topo1/r3/bgpd.conf b/tests/topotests/bfd-vrf-topo1/r3/bgpd.conf
new file mode 100644
index 000000000..277f027d5
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r3/bgpd.conf
@@ -0,0 +1,7 @@
+router bgp 103 vrf r3-cust1
+ neighbor 192.168.1.2 remote-as 102
+ neighbor 192.168.1.2 bfd
+ address-family ipv4 unicast
+  network 10.254.254.3/32
+ exit-address-family
+!
diff --git a/tests/topotests/bfd-vrf-topo1/r3/peers.json b/tests/topotests/bfd-vrf-topo1/r3/peers.json
new file mode 100644
index 000000000..ef3800864
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r3/peers.json
@@ -0,0 +1,6 @@
+[
+  {
+    "peer": "192.168.1.2",
+    "status": "up"
+  }
+]
diff --git a/tests/topotests/bfd-vrf-topo1/r3/zebra.conf b/tests/topotests/bfd-vrf-topo1/r3/zebra.conf
new file mode 100644
index 000000000..f727c2d63
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r3/zebra.conf
@@ -0,0 +1,3 @@
+interface r3-eth0 vrf r3-cust1
+ ip address 192.168.1.1/24
+!
diff --git a/tests/topotests/bfd-vrf-topo1/r4/bfdd.conf b/tests/topotests/bfd-vrf-topo1/r4/bfdd.conf
new file mode 100644
index 000000000..a56a3a0d3
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r4/bfdd.conf
@@ -0,0 +1,7 @@
+bfd
+ peer 192.168.2.2 vrf r4-cust1
+  transmit-interval 2000
+  receive-interval 2000
+  no shutdown
+ !
+!
diff --git a/tests/topotests/bfd-vrf-topo1/r4/bgp_prefixes.json b/tests/topotests/bfd-vrf-topo1/r4/bgp_prefixes.json
new file mode 100644
index 000000000..cc8510dd6
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r4/bgp_prefixes.json
@@ -0,0 +1,52 @@
+{
+  "routes": {
+    "10.254.254.1/32": [
+      {
+        "aspath": "102 101",
+        "prefix": "10.254.254.1",
+        "valid": true,
+        "peerId": "192.168.2.2",
+        "prefixLen": 32,
+        "nexthops": [
+          {
+            "ip": "192.168.2.2",
+            "used": true,
+            "afi": "ipv4"
+          }
+        ]
+      }
+    ],
+    "10.254.254.2/32": [
+      {
+        "aspath": "102",
+        "prefix": "10.254.254.2",
+        "valid": true,
+        "peerId": "192.168.2.2",
+        "prefixLen": 32,
+        "nexthops": [
+          {
+            "ip": "192.168.2.2",
+            "used": true,
+            "afi": "ipv4"
+          }
+        ]
+      }
+    ],
+    "10.254.254.3/32": [
+      {
+        "aspath": "102 103",
+        "prefix": "10.254.254.3",
+        "valid": true,
+        "peerId": "192.168.2.2",
+        "prefixLen": 32,
+        "nexthops": [
+          {
+            "ip": "192.168.2.2",
+            "used": true,
+            "afi": "ipv4"
+          }
+        ]
+      }
+    ]
+  }
+}
diff --git a/tests/topotests/bfd-vrf-topo1/r4/bgp_summary.json b/tests/topotests/bfd-vrf-topo1/r4/bgp_summary.json
new file mode 100644
index 000000000..7d81784b5
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r4/bgp_summary.json
@@ -0,0 +1,11 @@
+{
+  "ipv4Unicast": {
+    "as": 104,
+    "peers": {
+      "192.168.2.2": {
+        "remoteAs": 102,
+        "state": "Established"
+      }
+    }
+  }
+}
diff --git a/tests/topotests/bfd-vrf-topo1/r4/bgpd.conf b/tests/topotests/bfd-vrf-topo1/r4/bgpd.conf
new file mode 100644
index 000000000..66bf28587
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r4/bgpd.conf
@@ -0,0 +1,7 @@
+router bgp 104 vrf r4-cust1
+ neighbor 192.168.2.2 remote-as 102
+ neighbor 192.168.2.2 bfd
+ address-family ipv4 unicast
+  network 10.254.254.4/32
+ exit-address-family
+!
diff --git a/tests/topotests/bfd-vrf-topo1/r4/peers.json b/tests/topotests/bfd-vrf-topo1/r4/peers.json
new file mode 100644
index 000000000..37140089e
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r4/peers.json
@@ -0,0 +1,6 @@
+[
+  {
+    "peer": "192.168.2.2",
+    "status": "up"
+  }
+]
diff --git a/tests/topotests/bfd-vrf-topo1/r4/zebra.conf b/tests/topotests/bfd-vrf-topo1/r4/zebra.conf
new file mode 100644
index 000000000..69770dd2b
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/r4/zebra.conf
@@ -0,0 +1,3 @@
+interface r4-eth0 vrf r4-cust1
+ ip address 192.168.2.1/24
+!
diff --git a/tests/topotests/bfd-vrf-topo1/test_bfd_vrf_topo1.dot b/tests/topotests/bfd-vrf-topo1/test_bfd_vrf_topo1.dot
new file mode 100644
index 000000000..c84ace278
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/test_bfd_vrf_topo1.dot
@@ -0,0 +1,73 @@
+## Color coding:
+#########################
+##  Main FRR: #f08080  red
+##  Switches: #d0e0d0  gray
+##  RIP:      #19e3d9  Cyan
+##  RIPng:    #fcb314  dark yellow
+##  OSPFv2:   #32b835  Green
+##  OSPFv3:   #19e3d9  Cyan
+##  ISIS IPv4 #fcb314  dark yellow
+##  ISIS IPv6 #9a81ec  purple
+##  BGP IPv4  #eee3d3  beige
+##  BGP IPv6  #fdff00  yellow
+##### Colors (see http://www.color-hex.com/)
+
+graph template {
+  label="bfd-topo1";
+
+  # Routers
+  r1 [
+    shape=doubleoctagon,
+    label="r1",
+    fillcolor="#f08080",
+    style=filled,
+  ];
+  r2 [
+    shape=doubleoctagon
+    label="r2",
+    fillcolor="#f08080",
+    style=filled,
+  ];
+  r3 [
+    shape=doubleoctagon
+    label="r3",
+    fillcolor="#f08080",
+    style=filled,
+  ];
+  r4 [
+    shape=doubleoctagon
+    label="r4",
+    fillcolor="#f08080",
+    style=filled,
+  ];
+
+  # Switches
+  sw1 [
+    shape=oval,
+    label="sw1\n192.168.0.0/24",
+    fillcolor="#d0e0d0",
+    style=filled,
+  ];
+  sw2 [
+    shape=oval,
+    label="sw2\n192.168.1.0/24",
+    fillcolor="#d0e0d0",
+    style=filled,
+  ];
+  sw3 [
+    shape=oval,
+    label="sw3\n192.168.2.0/24",
+    fillcolor="#d0e0d0",
+    style=filled,
+  ];
+
+  # Connections
+  r1 -- sw1 [label="eth0\n.1"];
+  r2 -- sw1 [label="eth0\n.2"];
+
+  r3 -- sw2 [label="eth0\n.1"];
+  r2 -- sw2 [label="eth1\n.2"];
+
+  r4 -- sw3 [label="eth0\n.1"];
+  r2 -- sw3 [label="eth2\n.2"];
+}
diff --git a/tests/topotests/bfd-vrf-topo1/test_bfd_vrf_topo1.jpg b/tests/topotests/bfd-vrf-topo1/test_bfd_vrf_topo1.jpg
new file mode 100644
index 000000000..4d6d56e07
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/test_bfd_vrf_topo1.jpg
diff --git a/tests/topotests/bfd-vrf-topo1/test_bfd_vrf_topo1.py b/tests/topotests/bfd-vrf-topo1/test_bfd_vrf_topo1.py
new file mode 100755
index 000000000..e2933820b
--- /dev/null
+++ b/tests/topotests/bfd-vrf-topo1/test_bfd_vrf_topo1.py
@@ -0,0 +1,292 @@
+#!/usr/bin/env python
+
+#
+# test_bfd_vrf_topo1.py
+# Part of NetDEF Topology Tests
+#
+# Copyright (c) 2018 by
+# Network Device Education Foundation, Inc. ("NetDEF")
+# Copyright (c) 2019 by 6WIND
+#
+# Permission to use, copy, modify, and/or distribute this software
+# for any purpose with or without fee is hereby granted, provided
+# that the above copyright notice and this permission notice appear
+# in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
+# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+# OF THIS SOFTWARE.
+#
+
+"""
+test_bfd_vrf_topo1.py: Test the FRR/Quagga BFD daemon.
+"""
+
+import os
+import sys
+import json
+from functools import partial
+import pytest
+
+# Save the Current Working Directory to find configuration files.
+CWD = os.path.dirname(os.path.realpath(__file__))
+sys.path.append(os.path.join(CWD, '../'))
+
+# pylint: disable=C0413
+# Import topogen and topotest helpers
+from lib import topotest
+from lib.topogen import Topogen, TopoRouter, get_topogen
+from lib.topolog import logger
+
+# Required to instantiate the topology builder class.
+from mininet.topo import Topo
+
+class BFDTopo(Topo):
+    "Test topology builder"
+    def build(self, *_args, **_opts):
+        "Build function"
+        tgen = get_topogen(self)
+
+        # Create 4 routers
+        for routern in range(1, 5):
+            tgen.add_router('r{}'.format(routern))
+
+        switch = tgen.add_switch('s1')
+        switch.add_link(tgen.gears['r1'])
+        switch.add_link(tgen.gears['r2'])
+
+        switch = tgen.add_switch('s2')
+        switch.add_link(tgen.gears['r2'])
+        switch.add_link(tgen.gears['r3'])
+
+        switch = tgen.add_switch('s3')
+        switch.add_link(tgen.gears['r2'])
+        switch.add_link(tgen.gears['r4'])
+
+
+def setup_module(mod):
+    "Sets up the pytest environment"
+    tgen = Topogen(BFDTopo, mod.__name__)
+    tgen.start_topology()
+
+    router_list = tgen.routers()
+
+    # check for zebra capability
+    for rname, router in router_list.iteritems():
+        if router.check_capability(
+                TopoRouter.RD_ZEBRA,
+                '--vrfwnetns'
+        ) == False:
+            return  pytest.skip('Skipping BFD Topo1 VRF NETNS feature. VRF NETNS backend not available on FRR')
+
+    if os.system('ip netns list') != 0:
+        return  pytest.skip('Skipping BFD Topo1 VRF NETNS Test. NETNS not available on System')
+
+    logger.info('Testing with VRF Namespace support')
+
+    cmds = ['if [ -e /var/run/netns/{0}-cust1 ] ; then ip netns del {0}-cust1 ; fi',
+            'ip netns add {0}-cust1',
+            'ip link set dev {0}-eth0 netns {0}-cust1',
+            'ip netns exec {0}-cust1 ifconfig {0}-eth0 up']
+    cmds2 = ['ip link set dev {0}-eth1 netns {0}-cust1',
+             'ip netns exec {0}-cust1 ifconfig {0}-eth1 up',
+             'ip link set dev {0}-eth2 netns {0}-cust1',
+             'ip netns exec {0}-cust1 ifconfig {0}-eth2 up']
+
+    for rname, router in router_list.iteritems():
+        # create VRF rx-cust1 and link rx-eth0 to rx-cust1
+        for cmd in cmds:
+            output = tgen.net[rname].cmd(cmd.format(rname))
+        if rname == 'r2':
+            for cmd in cmds2:
+                output = tgen.net[rname].cmd(cmd.format(rname))
+
+    for rname, router in router_list.iteritems():
+        router.load_config(
+            TopoRouter.RD_ZEBRA,
+            os.path.join(CWD, '{}/zebra.conf'.format(rname)),
+            '--vrfwnetns'
+        )
+        router.load_config(
+            TopoRouter.RD_BFD,
+            os.path.join(CWD, '{}/bfdd.conf'.format(rname))
+        )
+        router.load_config(
+            TopoRouter.RD_BGP,
+            os.path.join(CWD, '{}/bgpd.conf'.format(rname))
+        )
+
+    # Initialize all routers.
+    tgen.start_router()
+
+    # Verify that we are using the proper version and that the BFD
+    # daemon exists.
+    for router in router_list.values():
+        # Check for Version
+        if router.has_version('<', '5.1'):
+            tgen.set_error('Unsupported FRR version')
+            break
+
+def teardown_module(_mod):
+    "Teardown the pytest environment"
+    tgen = get_topogen()
+    # move back rx-eth0 to default VRF
+    # delete rx-vrf
+    cmds = ['ip netns exec {0}-cust1 ip link set {0}-eth0 netns 1',
+            'ip netns delete {0}-cust1']
+    cmds2 = ['ip netns exec {0}-cust1 ip link set {0}-eth1 netns 1',
+             'ip netns exec {0}-cust2 ip link set {0}-eth1 netns 1']
+
+    router_list = tgen.routers()
+    for rname, router in router_list.iteritems():
+        if rname == 'r2':
+            for cmd in cmds2:
+                tgen.net[rname].cmd(cmd.format(rname))
+        for cmd in cmds:
+            tgen.net[rname].cmd(cmd.format(rname))
+    tgen.stop_topology()
+
+def test_bfd_connection():
+    "Assert that the BFD peers can find themselves."
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    logger.info('waiting for bfd peers to go up')
+    for router in tgen.routers().values():
+        json_file = '{}/{}/peers.json'.format(CWD, router.name)
+        expected = json.loads(open(json_file).read())
+
+        test_func = partial(topotest.router_json_cmp,
+            router, 'show bfd peers json', expected)
+        _, result = topotest.run_and_expect(test_func, None, count=8, wait=0.5)
+        assertmsg = '"{}" JSON output mismatches'.format(router.name)
+        assert result is None, assertmsg
+
+
+def test_bgp_convergence():
+    "Assert that BGP is converging."
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    logger.info('waiting for bgp peers to go up')
+
+    for router in tgen.routers().values():
+        ref_file = '{}/{}/bgp_summary.json'.format(CWD, router.name)
+        expected = json.loads(open(ref_file).read())
+        test_func = partial(topotest.router_json_cmp,
+                            router, 'show ip bgp vrf {}-cust1 summary json'.format(router.name), expected)
+        _, res = topotest.run_and_expect(test_func, None, count=125, wait=1.0)
+        assertmsg = '{}: bgp did not converge'.format(router.name)
+        assert res is None, assertmsg
+
+
+def test_bgp_fast_convergence():
+    "Assert that BGP is converging before setting a link down."
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    logger.info('waiting for bgp peers converge')
+
+    for router in tgen.routers().values():
+        ref_file = '{}/{}/bgp_prefixes.json'.format(CWD, router.name)
+        expected = json.loads(open(ref_file).read())
+        test_func = partial(topotest.router_json_cmp,
+                            router, 'show ip bgp vrf {}-cust1 json'.format(router.name), expected)
+        _, res = topotest.run_and_expect(test_func, None, count=40, wait=0.5)
+        assertmsg = '{}: bgp did not converge'.format(router.name)
+        assert res is None, assertmsg
+
+
+def test_bfd_fast_convergence():
+    """
+    Assert that BFD notices the link down after simulating network
+    failure.
+    """
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    # Disable r2-eth0 link
+    router2 = tgen.gears['r2']
+    topotest.interface_set_status(router2, 'r2-eth0', ifaceaction=False, vrf_name='r2-cust1')
+
+    # Wait the minimum time we can before checking that BGP/BFD
+    # converged.
+    logger.info('waiting for BFD converge')
+
+    # Check that BGP converged quickly.
+    for router in tgen.routers().values():
+        json_file = '{}/{}/peers.json'.format(CWD, router.name)
+        expected = json.loads(open(json_file).read())
+
+        # Load the same file as previous test, but expect R1 to be down.
+        if router.name == 'r1':
+            for peer in expected:
+                if peer['peer'] == '192.168.0.2':
+                    peer['status'] = 'down'
+        else:
+            for peer in expected:
+                if peer['peer'] == '192.168.0.1':
+                    peer['status'] = 'down'
+
+        test_func = partial(topotest.router_json_cmp,
+            router, 'show bfd peers json', expected)
+        _, res = topotest.run_and_expect(test_func, None, count=20, wait=0.5)
+        assertmsg = '"{}" JSON output mismatches'.format(router.name)
+        assert res is None, assertmsg
+
+
+def test_bgp_fast_reconvergence():
+    "Assert that BGP is converging after setting a link down."
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    logger.info('waiting for BGP re convergence')
+
+    # Check that BGP converged quickly.
+    for router in tgen.routers().values():
+        ref_file = '{}/{}/bgp_prefixes.json'.format(CWD, router.name)
+        expected = json.loads(open(ref_file).read())
+
+        # Load the same file as previous test, but set networks to None
+        # to test absence.
+        if router.name == 'r1':
+            expected['routes']['10.254.254.2/32'] = None
+            expected['routes']['10.254.254.3/32'] = None
+            expected['routes']['10.254.254.4/32'] = None
+        else:
+            expected['routes']['10.254.254.1/32'] = None
+
+        test_func = partial(topotest.router_json_cmp,
+                            router, 'show ip bgp vrf {}-cust1 json'.format(router.name), expected)
+        _, res = topotest.run_and_expect(
+            test_func,
+            None,
+            count=3,
+            wait=1
+        )
+        assertmsg = '{}: bgp did not converge'.format(router.name)
+        assert res is None, assertmsg
+
+
+def test_memory_leak():
+    "Run the memory leak test and report results."
+    tgen = get_topogen()
+    if not tgen.is_memleak_enabled():
+        pytest.skip('Memory leak test/report is disabled')
+
+    tgen.report_memory_leaks()
+
+
+if __name__ == '__main__':
+    args = ["-s"] + sys.argv[1:]
+    sys.exit(pytest.main(args))