tests: add an evpn RT5 path selection to bgp_path_selection

Add an evpn RT5 path selection to bgp_path_selection

Signed-off-by: Louis Scalbert <[email protected]>

tests/topotests/bgp_path_selection/r1/bgpd.conf

@@ -15,6 +15,11 @@ router bgp 65001
  neighbor 192.0.2.2 activate
  neighbor 192.0.2.3 activate
  exit-address-family
+ address-family l2vpn evpn
+ neighbor 192.0.2.2 activate
+ neighbor 192.0.2.3 activate
+ advertise-all-vni
+ exit-address-family
 !
 router bgp 65001 vrf vrf1
  bgp router-id 192.0.2.1
@@ -24,5 +29,13 @@ router bgp 65001 vrf vrf1
  rt vpn both 52:100
  import vpn
  export vpn
+!
+router bgp 65001 vrf vrf2
+ bgp router-id 192.0.2.1
+ address-family ipv4 unicast
+ redistribute connected
+ address-family l2vpn evpn
+ autort rfc8365-compatible
+ rd 65001:100
  exit-address-family
-!
+!

tests/topotests/bgp_path_selection/r1/zebra.conf

@@ -1,4 +1,8 @@
 !
+vrf vrf2
+ vni 100
+ exit-vrf
+!
 interface lo
  ip address 192.0.2.1/32
  ip address 172.16.255.1/32

tests/topotests/bgp_path_selection/r2/bgpd.conf

@@ -10,6 +10,10 @@ router bgp 65002
  address-family ipv4 vpn
  neighbor 192.168.1.1 activate
  exit-address-family
+ address-family l2vpn evpn
+ neighbor 192.168.1.1 activate
+ advertise-all-vni
+ exit-address-family
 !
 router bgp 65002 vrf vrf1
  bgp router-id 192.0.2.2
@@ -22,4 +26,15 @@ router bgp 65002 vrf vrf1
  import vpn
  export vpn
  exit-address-family
-!
+!
+router bgp 65002 vrf vrf2
+ bgp router-id 192.0.2.2
+ no bgp ebgp-requires-policy
+ address-family ipv4 unicast
+ redistribute connected
+ address-family l2vpn evpn
+ autort rfc8365-compatible
+ advertise ipv4 unicast
+ rd 65002:100
+ exit-address-family
+!

tests/topotests/bgp_path_selection/r2/zebra.conf

@@ -1,4 +1,8 @@
 !
+vrf vrf2
+ vni 100
+ exit-vrf
+!
 int lo
  ip address 192.0.2.2/32
 !

tests/topotests/bgp_path_selection/r3/bgpd.conf

@@ -10,6 +10,10 @@ router bgp 65002
  address-family ipv4 vpn
  neighbor 192.168.2.1 activate
  exit-address-family
+ address-family l2vpn evpn
+ neighbor 192.168.2.1 activate
+ advertise-all-vni
+ exit-address-family
 !
 router bgp 65002 vrf vrf1
  bgp router-id 192.0.2.3
@@ -22,4 +26,15 @@ router bgp 65002 vrf vrf1
  import vpn
  export vpn
  exit-address-family
-!
+!
+router bgp 65002 vrf vrf2
+ bgp router-id 192.0.2.3
+ no bgp ebgp-requires-policy
+ address-family ipv4 unicast
+ redistribute connected
+ address-family l2vpn evpn
+ autort rfc8365-compatible
+ advertise ipv4 unicast
+ rd 65002:100
+ exit-address-family
+!

tests/topotests/bgp_path_selection/r3/zebra.conf

@@ -1,4 +1,8 @@
 !
+vrf vrf2
+ vni 100
+ exit-vrf
+!
 int lo
  ip address 192.0.2.3/32
 !

tests/topotests/bgp_path_selection/test_bgp_path_selection.py

@@ -50,9 +50,26 @@ def setup_module(mod):
  tgen.gears["r{}".format(routern)].cmd("ip link add vrf1 type vrf table 10")
  tgen.gears["r{}".format(routern)].cmd("ip link set vrf1 up")
  tgen.gears["r{}".format(routern)].cmd("ip address add dev vrf1 {}.{}.{}.{}/32".format(routern, routern, routern,routern))
+ tgen.gears["r{}".format(routern)].cmd("ip link add vrf2 type vrf table 20")
+ tgen.gears["r{}".format(routern)].cmd("ip link set vrf2 up")
+ tgen.gears["r{}".format(routern)].cmd(
+ "ip address add dev vrf2 192.0.2.{}/32".format(routern)
+ )
+ tgen.gears["r{}".format(routern)].cmd("ip link add br1 type bridge")
+ tgen.gears["r{}".format(routern)].cmd(
+ "ip link add vxl1 type vxlan id 100 dev lo local 192.0.2.{}".format(routern)
+ )
+ tgen.gears["r{}".format(routern)].cmd("ip link set dev vxl1 master br1")
+ tgen.gears["r{}".format(routern)].cmd("ip link set dev br1 master vrf2")
+ tgen.gears["r{}".format(routern)].cmd("ip link set dev br1 up")
+ tgen.gears["r{}".format(routern)].cmd("ip link set dev vxl1 up")
+
  tgen.gears["r2"].cmd("ip address add dev vrf1 192.0.2.8/32")
  tgen.gears["r3"].cmd("ip address add dev vrf1 192.0.2.8/32")
 
+ tgen.gears["r2"].cmd("ip address add dev vrf2 192.0.4.8/32")
+ tgen.gears["r3"].cmd("ip address add dev vrf2 192.0.4.8/32")
+
  for i, (rname, router) in enumerate(router_list.items(), 1):
  router.load_config(
  TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
@@ -144,6 +161,58 @@ def _bgp_check_path_selection_vpn_ecmp():
  assert result is None, "Failed to see BGP prefixes on R1"
 
 
+def test_bgp_path_selection_evpn_r5_ecmp():
+ tgen = get_topogen()
+
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ def _bgp_check_path_selection_evpn_r5_ecmp():
+ output = json.loads(
+ tgen.gears["r1"].vtysh_cmd("show ip route vrf vrf2 192.0.4.8/32 json")
+ )
+ expected = {
+ "192.0.4.8/32": [
+ {
+ "prefix": "192.0.4.8/32",
+ "protocol": "bgp",
+ "vrfName": "vrf2",
+ "selected": True,
+ "installed": True,
+ "internalNextHopNum": 2,
+ "internalNextHopActiveNum": 2,
+ "nexthops": [
+ {
+ "fib": True,
+ "ip": "192.0.2.2",
+ "afi": "ipv4",
+ "interfaceName": "br1",
+ "active": True,
+ "onLink": True,
+ "weight": 1,
+ },
+ {
+ "fib": True,
+ "ip": "192.0.2.3",
+ "afi": "ipv4",
+ "interfaceName": "br1",
+ "active": True,
+ "onLink": True,
+ "weight": 1,
+ },
+ ],
+ }
+ ]
+ }
+
+ return topotest.json_cmp(output, expected)
+
+ step("Check if two ECMP paths are present")
+ test_func = functools.partial(_bgp_check_path_selection_evpn_r5_ecmp)
+ _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+ assert result is None, "Failed to see BGP prefixes on R1"
+
+
 def test_bgp_path_selection_metric():
  tgen = get_topogen()
 
@@ -215,6 +284,49 @@ def _bgp_check_path_selection_vpn_metric():
  assert result is None, "Failed to see BGP prefixes on R1"
 
 
+def test_bgp_path_selection_evpn_r5_metric():
+ tgen = get_topogen()
+
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ def _bgp_check_path_selection_evpn_r5_metric():
+ output = json.loads(
+ tgen.gears["r1"].vtysh_cmd("show ip route vrf vrf2 192.0.4.8/32 json")
+ )
+ expected = {
+ "192.0.4.8/32": [
+ {
+ "prefix": "192.0.4.8/32",
+ "protocol": "bgp",
+ "vrfName": "vrf2",
+ "selected": True,
+ "installed": True,
+ "internalNextHopNum": 1,
+ "internalNextHopActiveNum": 1,
+ "nexthops": [
+ {
+ "fib": True,
+ "ip": "192.0.2.2",
+ "afi": "ipv4",
+ "interfaceName": "br1",
+ "active": True,
+ "onLink": True,
+ "weight": 1,
+ }
+ ],
+ }
+ ]
+ }
+
+ return topotest.json_cmp(output, expected)
+
+ step("Check if IGP metric best path is selected")
+ test_func = functools.partial(_bgp_check_path_selection_evpn_r5_metric)
+ _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+ assert result is None, "Failed to see BGP prefixes on R1"
+
+
 if __name__ == "__main__":
  args = ["-s"] + sys.argv[1:]
  sys.exit(pytest.main(args))