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Example: bgp csc vpn with car

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r1

hostname r1
vrf def v1
 rd 1:1
 label-mode per-prefix
 exit
vrf def v3
 rd 1:3
 rt-both 1:3
 label-mode per-prefix
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.1 255.255.255.255
 ipv6 addr 4321::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo1
 vrf for v3
 ipv4 addr 4.4.4.1 255.255.255.255
 ipv6 addr 4444::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.1 255.255.255.252
 ipv6 addr 1234:1::1 ffff:ffff::
 mpls enable
 exit
router bgp4 1
 vrf v1
 no safe-ebgp
 address car
 local-as 1
 router-id 4.4.4.1
 neigh 1.1.1.2 remote-as 2
 red conn
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 address car
 local-as 1
 router-id 6.6.6.1
 neigh 1234:1::2 remote-as 2
 red conn
 exit
router bgp4 4
 vrf v1
 no safe-ebgp
 address vpnuni
 local-as 4
 router-id 4.4.4.1
 neigh 2.2.2.4 remote-as 4
 neigh 2.2.2.4 update lo0
 neigh 2.2.2.4 send-comm both
 afi-vrf v3 ena
 afi-vrf v3 red conn
 exit
router bgp6 4
 vrf v1
 no safe-ebgp
 address vpnuni
 local-as 4
 router-id 6.6.6.1
 neigh 4321::4 remote-as 4
 neigh 4321::4 update lo0
 neigh 4321::4 send-comm both
 afi-vrf v3 ena
 afi-vrf v3 red conn
 exit

r2

hostname r2
vrf def v1
 rd 1:1
 label-mode per-prefix
 exit
vrf def v2
 rd 1:2
 rt-both 1:2
 label-mode per-prefix
 exit
access-list test4
 deny 1 any all any all
 permit all any all any all
 exit
access-list test6
 deny all 4321:: ffff:: all 4321:: ffff:: all
 permit all any all any all
 exit
int lo0
 vrf for v1
 ipv4 addr 3.3.3.101 255.255.255.255
 ipv6 addr 3333::101 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo1
 vrf for v2
 ipv4 addr 2.2.2.2 255.255.255.255
 ipv6 addr 4321::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v2
 ipv4 addr 1.1.1.2 255.255.255.252
 ipv6 addr 1234:1::2 ffff:ffff::
 mpls enable
 ipv4 access-group-in test4
 ipv6 access-group-in test6
 exit
int eth2
 vrf for v1
 ipv4 addr 3.3.3.1 255.255.255.252
 ipv6 addr 3333::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffc
 mpls enable
 mpls ldp4
 mpls ldp6
 ipv4 access-group-in test4
 ipv6 access-group-in test6
 exit
ipv4 route v1 3.3.3.102 255.255.255.255 3.3.3.2
ipv6 route v1 3333::102 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 3333::2
router bgp4 1
 vrf v2
 no safe-ebgp
 address car
 local-as 2
 router-id 4.4.4.2
 neigh 1.1.1.1 remote-as 1
 red conn
 red bgp4 2
 exit
router bgp6 1
 vrf v2
 no safe-ebgp
 address car
 local-as 2
 router-id 6.6.6.2
 neigh 1234:1::1 remote-as 1
 red conn
 red bgp6 2
 exit
router bgp4 2
 vrf v1
 no safe-ebgp
 address vpnuni
 local-as 2
 router-id 4.4.4.1
 neigh 3.3.3.102 remote-as 2
 neigh 3.3.3.102 update lo0
 neigh 3.3.3.102 send-comm both
 afi-vrf v2 ena
 afi-vrf v2 red conn
 afi-vrf v2 red bgp4 1
 exit
router bgp6 2
 vrf v1
 no safe-ebgp
 address vpnuni
 local-as 2
 router-id 6.6.6.1
 neigh 3333::102 remote-as 2
 neigh 3333::102 update lo0
 neigh 3333::102 send-comm both
 afi-vrf v2 ena
 afi-vrf v2 red conn
 afi-vrf v2 red bgp6 1
 exit

r3

hostname r3
vrf def v1
 rd 1:1
 label-mode per-prefix
 exit
access-list test4
 deny 1 any all any all
 permit all any all any all
 exit
access-list test6
 deny all 4321:: ffff:: all 4321:: ffff:: all
 permit all any all any all
 exit
int eth1
 vrf for v1
 ipv4 addr 3.3.3.2 255.255.255.252
 ipv6 addr 3333::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffc
 mpls enable
 mpls ldp4
 mpls ldp6
 ipv4 access-group-in test4
 ipv6 access-group-in test6
 exit
int eth2
 vrf for v1
 ipv4 addr 3.3.3.5 255.255.255.252
 ipv6 addr 3333::5 ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffc
 mpls enable
 mpls ldp4
 mpls ldp6
 ipv4 access-group-in test4
 ipv6 access-group-in test6
 exit
ipv4 route v1 3.3.3.101 255.255.255.255 3.3.3.1
ipv6 route v1 3333::101 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 3333::1
ipv4 route v1 3.3.3.102 255.255.255.255 3.3.3.6
ipv6 route v1 3333::102 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 3333::6

r4

hostname r4
vrf def v1
 rd 1:1
 label-mode per-prefix
 exit
vrf def v2
 rd 1:2
 rt-both 1:2
 label-mode per-prefix
 exit
access-list test4
 deny 1 any all any all
 permit all any all any all
 exit
access-list test6
 deny all 4321:: ffff:: all 4321:: ffff:: all
 permit all any all any all
 exit
int lo0
 vrf for v1
 ipv4 addr 3.3.3.102 255.255.255.255
 ipv6 addr 3333::102 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo1
 vrf for v2
 ipv4 addr 2.2.2.3 255.255.255.255
 ipv6 addr 4321::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 3.3.3.6 255.255.255.252
 ipv6 addr 3333::6 ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffc
 mpls enable
 mpls ldp4
 mpls ldp6
 ipv4 access-group-in test4
 ipv6 access-group-in test6
 exit
int eth2
 vrf for v2
 ipv4 addr 1.1.1.5 255.255.255.252
 ipv6 addr 1234:2::1 ffff:ffff::
 mpls enable
 ipv4 access-group-in test4
 ipv6 access-group-in test6
 exit
ipv4 route v1 3.3.3.101 255.255.255.255 3.3.3.5
ipv6 route v1 3333::101 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 3333::5
router bgp4 1
 vrf v2
 no safe-ebgp
 address car
 local-as 2
 router-id 4.4.4.2
 neigh 1.1.1.6 remote-as 3
 red conn
 red bgp4 2
 exit
router bgp6 1
 vrf v2
 no safe-ebgp
 address car
 local-as 2
 router-id 6.6.6.2
 neigh 1234:2::2 remote-as 3
 red conn
 red bgp6 2
 exit
router bgp4 2
 vrf v1
 no safe-ebgp
 address vpnuni
 local-as 2
 router-id 4.4.4.2
 neigh 3.3.3.101 remote-as 2
 neigh 3.3.3.101 update lo0
 neigh 3.3.3.101 send-comm both
 afi-vrf v2 ena
 afi-vrf v2 red conn
 afi-vrf v2 red bgp4 1
 exit
router bgp6 2
 vrf v1
 no safe-ebgp
 address vpnuni
 local-as 2
 router-id 6.6.6.2
 neigh 3333::101 remote-as 2
 neigh 3333::101 update lo0
 neigh 3333::101 send-comm both
 afi-vrf v2 ena
 afi-vrf v2 red conn
 afi-vrf v2 red bgp6 1
 exit

r5

hostname r5
vrf def v1
 rd 1:1
 label-mode per-prefix
 exit
vrf def v3
 rd 1:3
 rt-both 1:3
 label-mode per-prefix
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.4 255.255.255.255
 ipv6 addr 4321::4 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo1
 vrf for v3
 ipv4 addr 4.4.4.4 255.255.255.255
 ipv6 addr 4444::4 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.6 255.255.255.252
 ipv6 addr 1234:2::2 ffff:ffff::
 mpls enable
 exit
router bgp4 1
 vrf v1
 no safe-ebgp
 address car
 local-as 3
 router-id 4.4.4.3
 neigh 1.1.1.5 remote-as 2
 red conn
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 address car
 local-as 3
 router-id 6.6.6.3
 neigh 1234:2::1 remote-as 2
 red conn
 exit
router bgp4 4
 vrf v1
 no safe-ebgp
 address vpnuni
 local-as 4
 router-id 4.4.4.2
 neigh 2.2.2.1 remote-as 4
 neigh 2.2.2.1 update lo0
 neigh 2.2.2.1 send-comm both
 afi-vrf v3 ena
 afi-vrf v3 red conn
 exit
router bgp6 4
 vrf v1
 no safe-ebgp
 address vpnuni
 local-as 4
 router-id 6.6.6.2
 neigh 4321::1 remote-as 4
 neigh 4321::1 update lo0
 neigh 4321::1 send-comm both
 afi-vrf v3 ena
 afi-vrf v3 red conn
 exit

r2 tping 100 60 3.3.3.102 vrf v1 sou lo0
r2 tping 100 60 3333::102 vrf v1 sou lo0
r4 tping 100 60 3.3.3.101 vrf v1 sou lo0
r4 tping 100 60 3333::101 vrf v1 sou lo0
r1 tping 100 60 2.2.2.2 vrf v1 sou lo0
r1 tping 100 60 2.2.2.3 vrf v1 sou lo0
r1 tping 100 60 2.2.2.4 vrf v1 sou lo0
r1 tping 100 60 4321::2 vrf v1 sou lo0
r1 tping 100 60 4321::3 vrf v1 sou lo0
r1 tping 100 60 4321::4 vrf v1 sou lo0
r2 tping 100 60 2.2.2.1 vrf v2 sou lo1
r2 tping 100 60 2.2.2.3 vrf v2 sou lo1
r2 tping 100 60 2.2.2.4 vrf v2 sou lo1
r2 tping 100 60 4321::1 vrf v2 sou lo1
r2 tping 100 60 4321::3 vrf v2 sou lo1
r2 tping 100 60 4321::4 vrf v2 sou lo1
r4 tping 100 60 2.2.2.1 vrf v2 sou lo1
r4 tping 100 60 2.2.2.2 vrf v2 sou lo1
r4 tping 100 60 2.2.2.4 vrf v2 sou lo1
r4 tping 100 60 4321::1 vrf v2 sou lo1
r4 tping 100 60 4321::2 vrf v2 sou lo1
r4 tping 100 60 4321::4 vrf v2 sou lo1
r5 tping 100 60 2.2.2.1 vrf v1 sou lo0
r5 tping 100 60 2.2.2.2 vrf v1 sou lo0
r5 tping 100 60 2.2.2.3 vrf v1 sou lo0
r5 tping 100 60 4321::1 vrf v1 sou lo0
r5 tping 100 60 4321::2 vrf v1 sou lo0
r5 tping 100 60 4321::3 vrf v1 sou lo0
r1 tping 100 60 4.4.4.4 vrf v3 sou lo1
r1 tping 100 60 4444::4 vrf v3 sou lo1
r5 tping 100 60 4.4.4.1 vrf v3 sou lo1
r5 tping 100 60 4444::1 vrf v3 sou lo1
  1. Install ContainerLab as described here
  2. Fetch rout-bgp756 file
  3. Launch ContainerLab rout-bgp756.yml topology: 

   containerlab deploy --topo rout-bgp756.yml
4. Destroy ContainerLab rout-bgp756.yml topology: 

   containerlab destroy --topo rout-bgp756.yml
5. Copy-paste configuration for each node in the lab topology

  1. Fetch or compile freeRtr rtr.jar file.
    You can grab it here
  2. Fetch rout-bgp756.tst file here
  3. Launch rout-bgp756.tst test: 

   java -jar ../../rtr.jar test tester rout-bgp756 path ./ temp ./ wait
4. Destroy freeRtr rout-bgp756.tst test: 

   Ctrl-C (In freeRtr test window)