topotests: add bgp_vpnv4_gr graceful restart test

This test creates a BGP peering with 2 VPNv4 routes that became staled after the link between the peering becomes down. - One test checks that the routes are removed on the BGP listener. Then the recovery re-adds the routes. - The other test removes one of the two received routes, after the link is down. Then a recovery happens. The expecation is that the removed route is removed from the BGP listener, while the maintained route is kept. Signed-off-by: Philippe Guibert <[email protected]>
FRRouting · Dec 4, 2023 · 4665bd4 · 4665bd4
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diff --git a/tests/topotests/bgp_vpnv4_gr/r1/bgp_ipv4_routes.json b/tests/topotests/bgp_vpnv4_gr/r1/bgp_ipv4_routes.json
@@ -0,0 +1,37 @@
+{
+     "vrfName": "vrf1",
+     "localAS": 65500,
+     "routes":
+         {
+            "172.31.0.10/32": [
+                {
+                    "prefix": "172.31.0.10",
+                    "prefixLen": 32,
+                    "network": "172.31.0.10\/32",
+                    "nhVrfName": "default",
+                    "nexthops": [
+                        {
+                            "ip": "192.168.0.2",
+                            "afi": "ipv4",
+                            "used": true
+                        }
+                    ]
+                }
+            ],
+            "172.31.1.10/32": [
+                {
+                    "prefix": "172.31.1.10",
+                    "prefixLen": 32,
+                    "network": "172.31.1.10\/32",
+                    "nhVrfName": "default",
+                    "nexthops": [
+                        {
+                            "ip": "192.168.0.2",
+                            "afi": "ipv4",
+                            "used": true
+                        }
+                    ]
+                }
+            ]
+         }
+}
diff --git a/tests/topotests/bgp_vpnv4_gr/r1/bgp_vpnv4_routes.json b/tests/topotests/bgp_vpnv4_gr/r1/bgp_vpnv4_routes.json
@@ -0,0 +1,52 @@
+{
+   "vrfName":"default",
+   "routerId":"192.0.2.1",
+   "defaultLocPrf":100,
+   "localAS":65500,
+   "routes":{
+      "routeDistinguishers":{
+         "444:2":{
+            "172.31.0.10/32":[
+               {
+                  "valid":true,
+                  "bestpath":true,
+                  "selectionReason":"First path received",
+                  "pathFrom":"external",
+                  "prefix":"172.31.0.10",
+                  "prefixLen":32,
+                  "network":"172.31.0.10\/32",
+                  "peerId":"192.168.0.2",
+                  "nexthops":[
+                     {
+                        "ip":"192.168.0.2",
+                        "afi":"ipv4",
+                        "used":true
+                     }
+                  ]
+               }
+            ]
+         },
+         "444:2":{
+            "172.31.1.10/32":[
+               {
+                  "valid":true,
+                  "bestpath":true,
+                  "selectionReason":"First path received",
+                  "pathFrom":"external",
+                  "prefix":"172.31.1.10",
+                  "prefixLen":32,
+                  "network":"172.31.1.10\/32",
+                  "peerId":"192.168.0.2",
+                  "nexthops":[
+                     {
+                        "ip":"192.168.0.2",
+                        "afi":"ipv4",
+                        "used":true
+                     }
+                  ]
+               }
+            ]
+         }
+      }
+   }
+}
diff --git a/tests/topotests/bgp_vpnv4_gr/r1/bgpd.conf b/tests/topotests/bgp_vpnv4_gr/r1/bgpd.conf
@@ -0,0 +1,25 @@
+router bgp 65500
+ bgp router-id 192.0.2.1
+ no bgp ebgp-requires-policy
+ neighbor 192.168.0.2 remote-as 65501
+ neighbor 192.168.0.2 timers 10 30
+ address-family ipv4 unicast
+  no neighbor 192.168.0.2 activate
+ exit-address-family
+ address-family ipv4 vpn
+  neighbor 192.168.0.2 activate
+ exit-address-family
+!
+router bgp 65500 vrf vrf1
+ bgp router-id 192.0.2.1
+ address-family ipv4 unicast
+  label vpn export 101
+  rd vpn export 444:1
+  rt vpn both 52:100
+  export vpn
+  import vpn
+ exit-address-family
+!
+interface r1-eth0
+ mpls bgp forwarding
+!
diff --git a/tests/topotests/bgp_vpnv4_gr/r1/zebra.conf b/tests/topotests/bgp_vpnv4_gr/r1/zebra.conf
@@ -0,0 +1,7 @@
+log stdout
+interface r1-eth1 vrf vrf1
+ ip address 172.31.0.1/32
+!
+interface r1-eth0
+ ip address 192.168.0.1/24
+!
diff --git a/tests/topotests/bgp_vpnv4_gr/r2/bgpd.conf b/tests/topotests/bgp_vpnv4_gr/r2/bgpd.conf
@@ -0,0 +1,29 @@
+router bgp 65501
+ bgp router-id 192.0.2.2
+ bgp graceful-restart restart-time 15
+ bgp graceful-restart
+ no bgp ebgp-requires-policy
+ neighbor 192.168.0.1 remote-as 65500
+ neighbor 192.168.0.1 timers 10 30
+ neighbor 192.168.0.1 timers connect 5
+ address-family ipv4 unicast
+  no neighbor 192.168.0.1 activate
+ exit-address-family
+ address-family ipv4 vpn
+  neighbor 192.168.0.1 activate
+ exit-address-family
+!
+router bgp 65501 vrf vrf1
+ bgp router-id 192.0.2.2
+ address-family ipv4 unicast
+  redistribute connected
+  label vpn export 102
+  rd vpn export 444:2
+  rt vpn both 52:100
+  export vpn
+  import vpn
+ exit-address-family
+!
+interface r2-eth0
+ mpls bgp forwarding
+!
diff --git a/tests/topotests/bgp_vpnv4_gr/r2/zebra.conf b/tests/topotests/bgp_vpnv4_gr/r2/zebra.conf
@@ -0,0 +1,10 @@
+log stdout
+interface r2-eth2 vrf vrf1
+ ip address 172.31.1.10/32
+!
+interface r2-eth1 vrf vrf1
+ ip address 172.31.0.10/32
+!
+interface r2-eth0
+ ip address 192.168.0.2/24
+!