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Example: bgp interas car with multiple labels

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r1

hostname r1
vrf def v1
 rd 1:1
 label-mode all-igp
 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 v1
 ipv4 addr 3.3.3.1 255.255.255.255
 ipv6 addr 3331::1 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
ipv4 route v1 2.2.2.3 255.255.255.255 1.1.1.2
ipv6 route v1 4321::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:1::2
router bgp4 1
 vrf v1
 no safe-ebgp
 address car
 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 multiple-label car
 justadvert lo1
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 address car
 local-as 1
 router-id 6.6.6.1
 neigh 4321::2 remote-as 1
 neigh 4321::2 update lo0
 neigh 4321::2 multiple-label car
 justadvert lo1
 exit
int pweth1
 vrf for v1
 ipv4 addr 4.4.4.1 255.255.255.0
 pseudo v1 lo1 pweompls 3.3.3.6 1234
 exit
int pweth2
 vrf for v1
 ipv4 addr 4.4.5.1 255.255.255.0
 pseudo v1 lo1 pweompls 3336::6 1234
 exit

r2

hostname r2
vrf def v1
 rd 1:1
 label-mode all-igp
 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 v1
 ipv4 addr 3.3.3.2 255.255.255.255
 ipv6 addr 3332::2 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 v1
 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 v1 2.2.2.3 255.255.255.255 1.1.1.6
ipv6 route v1 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 car
 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 multiple-label car
 neigh 2.2.2.1 route-reflect
 neigh 2.2.2.3 remote-as 1
 neigh 2.2.2.3 update lo0
 neigh 2.2.2.3 multiple-label car
 neigh 2.2.2.3 route-reflect
 justadvert lo1
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 address car
 local-as 1
 router-id 6.6.6.2
 neigh 4321::1 remote-as 1
 neigh 4321::1 update lo0
 neigh 4321::1 multiple-label car
 neigh 4321::1 route-reflect
 neigh 4321::3 remote-as 1
 neigh 4321::3 update lo0
 neigh 4321::3 multiple-label car
 neigh 4321::3 route-reflect
 justadvert lo1
 exit

r3

hostname r3
vrf def v1
 rd 1:1
 label-mode all-igp
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.3 255.255.255.255
 ipv6 addr 4321::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo1
 vrf for v1
 ipv4 addr 3.3.3.3 255.255.255.255
 ipv6 addr 3333::3 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
 mpls ldp4
 mpls ldp6
 exit
int eth2
 vrf for v1
 ipv4 addr 1.1.1.9 255.255.255.252
 ipv6 addr 1234:3::1 ffff:ffff::
 mpls enable
 exit
ipv4 route v1 2.2.2.1 255.255.255.255 1.1.1.5
ipv6 route v1 4321::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:2::1
ipv4 route v1 2.2.2.2 255.255.255.255 1.1.1.5
ipv6 route v1 4321::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:2::1
ipv4 route v1 1.1.1.10 255.255.255.255 1.1.1.10 mplsimp
ipv6 route v1 1234:3::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:3::2 mplsimp
router bgp4 1
 vrf v1
 no safe-ebgp
 address car
 local-as 1
 router-id 4.4.4.3
 neigh 2.2.2.2 remote-as 1
 neigh 2.2.2.2 update lo0
 neigh 2.2.2.2 multiple-label car
 neigh 2.2.2.2 next-hop-multi
 neigh 1.1.1.10 remote-as 2
 neigh 1.1.1.10 multiple-label car
 neigh 1.1.1.10 next-hop-multi
 justadvert lo1
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 address car
 local-as 1
 router-id 6.6.6.3
 neigh 4321::2 remote-as 1
 neigh 4321::2 update lo0
 neigh 4321::2 multiple-label car
 neigh 4321::2 next-hop-multi
 neigh 1234:3::2 remote-as 2
 neigh 1234:3::2 multiple-label car
 neigh 1234:3::2 next-hop-multi
 justadvert lo1
 exit

r4

hostname r4
vrf def v1
 rd 1:1
 label-mode all-igp
 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 v1
 ipv4 addr 3.3.3.4 255.255.255.255
 ipv6 addr 3334::4 ffff:ffff:ffff:ffff::
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.10 255.255.255.252
 ipv6 addr 1234:3::2 ffff:ffff::
 mpls enable
 exit
int eth2
 vrf for v1
 ipv4 addr 1.1.1.13 255.255.255.252
 ipv6 addr 1234:4::1 ffff:ffff::
 mpls enable
 mpls ldp4
 mpls ldp6
 exit
ipv4 route v1 2.2.2.5 255.255.255.255 1.1.1.14
ipv6 route v1 4321::5 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:4::2
ipv4 route v1 2.2.2.6 255.255.255.255 1.1.1.14
ipv6 route v1 4321::6 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:4::2
ipv4 route v1 1.1.1.9 255.255.255.255 1.1.1.9 mplsimp
ipv6 route v1 1234:3::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:3::1 mplsimp
router bgp4 2
 vrf v1
 no safe-ebgp
 address car
 local-as 2
 router-id 4.4.4.4
 neigh 2.2.2.5 remote-as 2
 neigh 2.2.2.5 update lo0
 neigh 2.2.2.5 multiple-label car
 neigh 2.2.2.5 next-hop-multi
 neigh 1.1.1.9 remote-as 1
 neigh 1.1.1.9 multiple-label car
 neigh 1.1.1.9 next-hop-multi
 justadvert lo1
 exit
router bgp6 2
 vrf v1
 no safe-ebgp
 address car
 local-as 2
 router-id 6.6.6.4
 neigh 4321::5 remote-as 2
 neigh 4321::5 update lo0
 neigh 4321::5 multiple-label car
 neigh 4321::5 next-hop-multi
 neigh 1234:3::1 remote-as 1
 neigh 1234:3::1 multiple-label car
 neigh 1234:3::1 next-hop-multi
 justadvert lo1
 exit

r5

hostname r5
vrf def v1
 rd 1:1
 label-mode all-igp
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.5 255.255.255.255
 ipv6 addr 4321::5 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo1
 vrf for v1
 ipv4 addr 3.3.3.5 255.255.255.255
 ipv6 addr 3335::5 ffff:ffff:ffff:ffff::
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.14 255.255.255.252
 ipv6 addr 1234:4::2 ffff:ffff::
 mpls enable
 mpls ldp4
 mpls ldp6
 exit
int eth2
 vrf for v1
 ipv4 addr 1.1.1.17 255.255.255.252
 ipv6 addr 1234:5::1 ffff:ffff::
 mpls enable
 mpls ldp4
 mpls ldp6
 exit
ipv4 route v1 2.2.2.4 255.255.255.255 1.1.1.13
ipv6 route v1 4321::4 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:4::1
ipv4 route v1 2.2.2.6 255.255.255.255 1.1.1.18
ipv6 route v1 4321::6 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:5::2
router bgp4 2
 vrf v1
 no safe-ebgp
 address car
 local-as 2
 router-id 4.4.4.5
 neigh 2.2.2.4 remote-as 2
 neigh 2.2.2.4 update lo0
 neigh 2.2.2.4 multiple-label car
 neigh 2.2.2.4 route-reflect
 neigh 2.2.2.6 remote-as 2
 neigh 2.2.2.6 update lo0
 neigh 2.2.2.6 multiple-label car
 neigh 2.2.2.6 route-reflect
 justadvert lo1
 exit
router bgp6 2
 vrf v1
 no safe-ebgp
 address car
 local-as 2
 router-id 6.6.6.5
 neigh 4321::4 remote-as 2
 neigh 4321::4 update lo0
 neigh 4321::4 multiple-label car
 neigh 4321::4 route-reflect
 neigh 4321::6 remote-as 2
 neigh 4321::6 update lo0
 neigh 4321::6 multiple-label car
 neigh 4321::6 route-reflect
 justadvert lo1
 exit

r6

hostname r6
vrf def v1
 rd 1:1
 label-mode all-igp
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.6 255.255.255.255
 ipv6 addr 4321::6 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo1
 vrf for v1
 ipv4 addr 3.3.3.6 255.255.255.255
 ipv6 addr 3336::6 ffff:ffff:ffff:ffff::
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.18 255.255.255.252
 ipv6 addr 1234:5::2 ffff:ffff::
 mpls enable
 mpls ldp4
 mpls ldp6
 exit
ipv4 route v1 2.2.2.4 255.255.255.255 1.1.1.17
ipv6 route v1 4321::4 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:5::1
ipv4 route v1 2.2.2.5 255.255.255.255 1.1.1.17
ipv6 route v1 4321::5 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 1234:5::1
router bgp4 2
 vrf v1
 no safe-ebgp
 address car
 local-as 2
 router-id 4.4.4.6
 neigh 2.2.2.5 remote-as 2
 neigh 2.2.2.5 update lo0
 neigh 2.2.2.5 multiple-label car
 justadvert lo1
 exit
router bgp6 2
 vrf v1
 no safe-ebgp
 address car
 local-as 2
 router-id 6.6.6.6
 neigh 4321::5 remote-as 2
 neigh 4321::5 update lo0
 neigh 4321::5 multiple-label car
 justadvert lo1
 exit
int pweth1
 vrf for v1
 ipv4 addr 4.4.4.2 255.255.255.0
 pseudo v1 lo1 pweompls 3.3.3.1 1234
 exit
int pweth2
 vrf for v1
 ipv4 addr 4.4.5.2 255.255.255.0
 pseudo v1 lo1 pweompls 3331::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
r1 tping 100 60 2.2.2.3 vrf v1 sou lo0
r1 tping 100 60 4321::3 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 v1 sou lo0
r2 tping 100 60 4321::3 vrf v1 sou lo0
r3 tping 100 60 2.2.2.1 vrf v1 sou lo0
r3 tping 100 60 4321::1 vrf v1 sou lo0
r3 tping 100 60 2.2.2.2 vrf v1 sou lo0
r3 tping 100 60 4321::2 vrf v1 sou lo0
r4 tping 100 60 2.2.2.5 vrf v1 sou lo0
r4 tping 100 60 4321::5 vrf v1 sou lo0
r4 tping 100 60 2.2.2.6 vrf v1 sou lo0
r4 tping 100 60 4321::6 vrf v1 sou lo0
r5 tping 100 60 2.2.2.4 vrf v1 sou lo0
r5 tping 100 60 4321::4 vrf v1 sou lo0
r5 tping 100 60 2.2.2.6 vrf v1 sou lo0
r5 tping 100 60 4321::6 vrf v1 sou lo0
r6 tping 100 60 2.2.2.4 vrf v1 sou lo0
r6 tping 100 60 4321::4 vrf v1 sou lo0
r6 tping 100 60 2.2.2.5 vrf v1 sou lo0
r6 tping 100 60 4321::5 vrf v1 sou lo0
r1 tping 100 60 3.3.3.2 vrf v1 sou lo1
r1 tping 100 60 3332::2 vrf v1 sou lo1
r1 tping 100 60 3.3.3.3 vrf v1 sou lo1
r1 tping 100 60 3333::3 vrf v1 sou lo1
r2 tping 100 60 3.3.3.1 vrf v1 sou lo1
r2 tping 100 60 3331::1 vrf v1 sou lo1
r2 tping 100 60 3.3.3.3 vrf v1 sou lo1
r2 tping 100 60 3333::3 vrf v1 sou lo1
r3 tping 100 60 3.3.3.1 vrf v1 sou lo1
r3 tping 100 60 3331::1 vrf v1 sou lo1
r3 tping 100 60 3.3.3.2 vrf v1 sou lo1
r3 tping 100 60 3332::2 vrf v1 sou lo1
r4 tping 100 60 3.3.3.5 vrf v1 sou lo1
r4 tping 100 60 3335::5 vrf v1 sou lo1
r4 tping 100 60 3.3.3.6 vrf v1 sou lo1
r4 tping 100 60 3336::6 vrf v1 sou lo1
r5 tping 100 60 3.3.3.4 vrf v1 sou lo1
r5 tping 100 60 3334::4 vrf v1 sou lo1
r5 tping 100 60 3.3.3.6 vrf v1 sou lo1
r5 tping 100 60 3336::6 vrf v1 sou lo1
r6 tping 100 60 3.3.3.4 vrf v1 sou lo1
r6 tping 100 60 3334::4 vrf v1 sou lo1
r6 tping 100 60 3.3.3.5 vrf v1 sou lo1
r6 tping 100 60 3335::5 vrf v1 sou lo1
r4 tping 100 60 3.3.3.1 vrf v1 sou lo1
r4 tping 100 60 3331::1 vrf v1 sou lo1
r4 tping 100 60 3.3.3.2 vrf v1 sou lo1
r4 tping 100 60 3332::2 vrf v1 sou lo1
r4 tping 100 60 3.3.3.3 vrf v1 sou lo1
r4 tping 100 60 3333::3 vrf v1 sou lo1
r5 tping 100 60 3.3.3.1 vrf v1 sou lo1
r5 tping 100 60 3331::1 vrf v1 sou lo1
r5 tping 100 60 3.3.3.2 vrf v1 sou lo1
r5 tping 100 60 3332::2 vrf v1 sou lo1
r5 tping 100 60 3.3.3.3 vrf v1 sou lo1
r5 tping 100 60 3333::3 vrf v1 sou lo1
r6 tping 100 60 3.3.3.1 vrf v1 sou lo1
r6 tping 100 60 3331::1 vrf v1 sou lo1
r6 tping 100 60 3.3.3.2 vrf v1 sou lo1
r6 tping 100 60 3332::2 vrf v1 sou lo1
r6 tping 100 60 3.3.3.3 vrf v1 sou lo1
r6 tping 100 60 3333::3 vrf v1 sou lo1
r1 tping 100 60 3.3.3.4 vrf v1 sou lo1
r1 tping 100 60 3334::4 vrf v1 sou lo1
r1 tping 100 60 3.3.3.5 vrf v1 sou lo1
r1 tping 100 60 3335::5 vrf v1 sou lo1
r1 tping 100 60 3.3.3.6 vrf v1 sou lo1
r1 tping 100 60 3336::6 vrf v1 sou lo1
r2 tping 100 60 3.3.3.4 vrf v1 sou lo1
r2 tping 100 60 3334::4 vrf v1 sou lo1
r2 tping 100 60 3.3.3.5 vrf v1 sou lo1
r2 tping 100 60 3335::5 vrf v1 sou lo1
r2 tping 100 60 3.3.3.6 vrf v1 sou lo1
r2 tping 100 60 3336::6 vrf v1 sou lo1
r3 tping 100 60 3.3.3.4 vrf v1 sou lo1
r3 tping 100 60 3334::4 vrf v1 sou lo1
r3 tping 100 60 3.3.3.5 vrf v1 sou lo1
r3 tping 100 60 3335::5 vrf v1 sou lo1
r3 tping 100 60 3.3.3.6 vrf v1 sou lo1
r3 tping 100 60 3336::6 vrf v1 sou lo1
r1 tping 100 40 4.4.4.2 vrf v1
r6 tping 100 40 4.4.4.1 vrf v1
r1 tping 100 40 4.4.5.2 vrf v1
r6 tping 100 40 4.4.5.1 vrf v1
  1. Install ContainerLab as described here
  2. Fetch rout-bgp757 file
  3. Launch ContainerLab rout-bgp757.yml topology: 

   containerlab deploy --topo rout-bgp757.yml
4. Destroy ContainerLab rout-bgp757.yml topology: 

   containerlab destroy --topo rout-bgp757.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-bgp757.tst file here
  3. Launch rout-bgp757.tst test: 

   java -jar ../../rtr.jar test tester rout-bgp757 path ./ temp ./ wait
4. Destroy freeRtr rout-bgp757.tst test: 

   Ctrl-C (In freeRtr test window)