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Example: bgp dual core csc vpn

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r1

hostname r1
vrf def v1
 rd 1:1
 label-mode per-prefix
 exit
vrf def v3
 rd 1:2
 rt-both 1:2
 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 lo2
 vrf for v3
 ipv4 addr 3.3.3.1 255.255.255.255
 ipv6 addr 3333::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
 mpls ldp4
 mpls ldp6
 exit
ipv4 route v1 2.2.2.2 255.255.255.255 1.1.1.2
ipv6 route v1 4321::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:1::2
router bgp4 1
 vrf v1
 no safe-ebgp
 address vpnuni
 local-as 1
 router-id 4.4.4.1
 neigh 2.2.2.2 remote-as 1
 neigh 2.2.2.2 update lo0
 neigh 2.2.2.2 send-comm both
 afi-vrf v3 ena
 afi-vrf v3 red conn
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 address vpnuni
 local-as 1
 router-id 6.6.6.1
 neigh 4321::2 remote-as 1
 neigh 4321::2 update lo0
 neigh 4321::2 send-comm both
 afi-vrf v3 ena
 afi-vrf v3 red conn
 exit
int pweth1
 vrf for v1
 ipv4 addr 4.4.4.1 255.255.255.0
 pseudo v3 lo2 pweompls 3.3.3.3 1234
 exit
int pweth2
 vrf for v1
 ipv4 addr 5.5.5.1 255.255.255.0
 pseudo v3 lo2 pweompls 3333::3 1234
 exit

r2

hostname r2
vrf def v1
 rd 1:1
 label-mode per-prefix
 exit
vrf def v2
 rd 1:0
 label-mode per-prefix
 exit
vrf def v3
 rd 1:2
 rt-both 1:2
 label-mode per-prefix
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.2 255.255.255.255
 ipv6 addr 4321::2 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 lo2
 vrf for v3
 ipv4 addr 3.3.3.2 255.255.255.255
 ipv6 addr 3333::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.2 255.255.255.252
 ipv6 addr 1234:1::2 ffff:ffff::
 mpls enable
 mpls ldp4
 mpls ldp6
 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
 mpls ldp4
 mpls ldp6
 exit
ipv4 route v2 2.2.2.3 255.255.255.255 1.1.1.6
ipv6 route v2 4321::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:2::2
ipv4 route v1 2.2.2.1 255.255.255.255 1.1.1.1
ipv6 route v1 4321::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:1::1
router bgp4 1
 vrf v1
 no safe-ebgp
 address vpnuni
 local-as 1
 router-id 4.4.4.2
 neigh 2.2.2.1 remote-as 1
 neigh 2.2.2.1 update lo0
 neigh 2.2.2.1 send-comm both
 afi-vrf v3 ena
 afi-vrf v3 red conn
 afi-vrf v3 red bgp4 2
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 address vpnuni
 local-as 1
 router-id 6.6.6.2
 neigh 4321::1 remote-as 1
 neigh 4321::1 update lo0
 neigh 4321::1 send-comm both
 afi-vrf v3 ena
 afi-vrf v3 red conn
 afi-vrf v3 red bgp6 2
 exit
router bgp4 2
 vrf v2
 no safe-ebgp
 address vpnuni
 local-as 2
 router-id 4.4.4.2
 neigh 2.2.2.3 remote-as 2
 neigh 2.2.2.3 update lo1
 neigh 2.2.2.3 send-comm both
 afi-vrf v3 ena
 afi-vrf v3 red conn
 afi-vrf v3 red bgp4 1
 exit
router bgp6 2
 vrf v2
 no safe-ebgp
 address vpnuni
 local-as 2
 router-id 6.6.6.2
 neigh 4321::3 remote-as 2
 neigh 4321::3 update lo1
 neigh 4321::3 send-comm both
 afi-vrf v3 ena
 afi-vrf v3 red conn
 afi-vrf v3 red bgp6 1
 exit

r3

hostname r3
vrf def v2
 rd 1:1
 label-mode per-prefix
 exit
vrf def v3
 rd 1:2
 rt-both 1:2
 label-mode per-prefix
 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 lo2
 vrf for v3
 ipv4 addr 3.3.3.3 255.255.255.255
 ipv6 addr 3333::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v2
 ipv4 addr 1.1.1.6 255.255.255.252
 ipv6 addr 1234:2::2 ffff:ffff::
 mpls enable
 mpls ldp4
 mpls ldp6
 exit
ipv4 route v2 2.2.2.2 255.255.255.255 1.1.1.5
ipv6 route v2 4321::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:2::1
router bgp4 1
 vrf v2
 no safe-ebgp
 address vpnuni
 local-as 2
 router-id 4.4.4.3
 neigh 2.2.2.2 remote-as 2
 neigh 2.2.2.2 update lo1
 neigh 2.2.2.2 send-comm both
 afi-vrf v3 ena
 afi-vrf v3 red conn
 exit
router bgp6 1
 vrf v2
 no safe-ebgp
 address vpnuni
 local-as 2
 router-id 6.6.6.3
 neigh 4321::2 remote-as 2
 neigh 4321::2 update lo1
 neigh 4321::2 send-comm both
 afi-vrf v3 ena
 afi-vrf v3 red conn
 exit
int pweth1
 vrf for v2
 ipv4 addr 4.4.4.3 255.255.255.0
 pseudo v3 lo2 pweompls 3.3.3.1 1234
 exit
int pweth2
 vrf for v2
 ipv4 addr 5.5.5.3 255.255.255.0
 pseudo v3 lo2 pweompls 3333::1 1234
 exit

r1 tping 100 60 2.2.2.2 vrf v1 sou lo0
r1 tping 100 60 4321::2 vrf v1 sou lo0
r2 tping 100 60 2.2.2.1 vrf v1 sou lo0
r2 tping 100 60 4321::1 vrf v1 sou lo0
r2 tping 100 60 2.2.2.3 vrf v2 sou lo1
r2 tping 100 60 4321::3 vrf v2 sou lo1
r3 tping 100 60 2.2.2.2 vrf v2 sou lo1
r3 tping 100 60 4321::2 vrf v2 sou lo1
r1 tping 100 60 3.3.3.2 vrf v3 sou lo2
r1 tping 100 60 3333::2 vrf v3 sou lo2
r1 tping 100 60 3.3.3.3 vrf v3 sou lo2
r1 tping 100 60 3333::3 vrf v3 sou lo2
r2 tping 100 60 3.3.3.1 vrf v3 sou lo2
r2 tping 100 60 3333::1 vrf v3 sou lo2
r2 tping 100 60 3.3.3.3 vrf v3 sou lo2
r2 tping 100 60 3333::3 vrf v3 sou lo2
r3 tping 100 60 3.3.3.1 vrf v3 sou lo2
r3 tping 100 60 3333::1 vrf v3 sou lo2
r3 tping 100 60 3.3.3.2 vrf v3 sou lo2
r3 tping 100 60 3333::2 vrf v3 sou lo2
r1 tping 100 60 4.4.4.3 vrf v1
r3 tping 100 60 4.4.4.1 vrf v2
r1 tping 100 60 5.5.5.3 vrf v1
r3 tping 100 60 5.5.5.1 vrf v2
  1. Install ContainerLab as described here
  2. Fetch rout-bgp338 file
  3. Launch ContainerLab rout-bgp338.yml topology: 

   containerlab deploy --topo rout-bgp338.yml
4. Destroy ContainerLab rout-bgp338.yml topology: 

   containerlab destroy --topo rout-bgp338.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-bgp338.tst file here
  3. Launch rout-bgp338.tst test: 

   java -jar ../../rtr.jar test tester rout-bgp338 path ./ temp ./ wait
4. Destroy freeRtr rout-bgp338.tst test: 

   Ctrl-C (In freeRtr test window)