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Example: bgp with sr

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r1

hostname r1
vrf def v1
 rd 1:1
 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 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
 local-as 1
 segrout 10 1
 router-id 4.4.4.1
 neigh 1.1.1.2 remote-as 2
 neigh 1.1.1.2 segrout
 red conn
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 local-as 1
 segrout 10 1
 router-id 6.6.6.1
 neigh 1234:1::2 remote-as 2
 neigh 1234:1::2 segrout
 red conn
 exit

r2

hostname r2
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 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 eth1
 vrf for v1
 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 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
router bgp4 1
 vrf v1
 no safe-ebgp
 local-as 2
 segrout 10 2
 router-id 4.4.4.2
 neigh 1.1.1.1 remote-as 1
 neigh 1.1.1.1 segrout
 neigh 1.1.1.6 remote-as 3
 neigh 1.1.1.6 segrout
 red conn
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 local-as 2
 segrout 10 2
 router-id 6.6.6.2
 neigh 1234:1::1 remote-as 1
 neigh 1234:1::1 segrout
 neigh 1234:2::2 remote-as 3
 neigh 1234:2::2 segrout
 red conn
 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 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 eth1
 vrf for v1
 ipv4 addr 1.1.1.6 255.255.255.252
 ipv6 addr 1234:2::2 ffff:ffff::
 mpls enable
 ipv4 access-group-in test4
 ipv6 access-group-in test6
 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
 ipv4 access-group-in test4
 ipv6 access-group-in test6
 exit
router bgp4 1
 vrf v1
 no safe-ebgp
 local-as 3
 segrout 10 3
 router-id 4.4.4.3
 neigh 1.1.1.5 remote-as 2
 neigh 1.1.1.5 segrout
 neigh 1.1.1.10 remote-as 4
 neigh 1.1.1.10 segrout
 red conn
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 local-as 3
 segrout 10 3
 router-id 6.6.6.3
 neigh 1234:2::1 remote-as 2
 neigh 1234:2::1 segrout
 neigh 1234:3::2 remote-as 4
 neigh 1234:3::2 segrout
 red conn
 exit

r4

hostname r4
vrf def v1
 rd 1:1
 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 eth1
 vrf for v1
 ipv4 addr 1.1.1.10 255.255.255.252
 ipv6 addr 1234:3::2 ffff:ffff::
 mpls enable
 exit
router bgp4 1
 vrf v1
 no safe-ebgp
 local-as 4
 segrout 10 4
 router-id 4.4.4.4
 neigh 1.1.1.9 remote-as 3
 neigh 1.1.1.9 segrout
 red conn
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 local-as 4
 segrout 10 4
 router-id 6.6.6.4
 neigh 1234:3::1 remote-as 3
 neigh 1234:3::1 segrout
 red conn
 exit

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 v1 sou lo0
r2 tping 100 60 2.2.2.3 vrf v1 sou lo0
r2 tping 100 60 2.2.2.4 vrf v1 sou lo0
r2 tping 100 60 4321::1 vrf v1 sou lo0
r2 tping 100 60 4321::3 vrf v1 sou lo0
r2 tping 100 60 4321::4 vrf v1 sou lo0
r3 tping 100 60 2.2.2.1 vrf v1 sou lo0
r3 tping 100 60 2.2.2.2 vrf v1 sou lo0
r3 tping 100 60 2.2.2.4 vrf v1 sou lo0
r3 tping 100 60 4321::1 vrf v1 sou lo0
r3 tping 100 60 4321::2 vrf v1 sou lo0
r3 tping 100 60 4321::4 vrf v1 sou lo0
r4 tping 100 60 2.2.2.1 vrf v1 sou lo0
r4 tping 100 60 2.2.2.2 vrf v1 sou lo0
r4 tping 100 60 2.2.2.3 vrf v1 sou lo0
r4 tping 100 60 4321::1 vrf v1 sou lo0
r4 tping 100 60 4321::2 vrf v1 sou lo0
r4 tping 100 60 4321::3 vrf v1 sou lo0
  1. Install ContainerLab as described here
  2. Fetch rout-bgp302 file
  3. Launch ContainerLab rout-bgp302.yml topology: 

   containerlab deploy --topo rout-bgp302.yml
4. Destroy ContainerLab rout-bgp302.yml topology: 

   containerlab destroy --topo rout-bgp302.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-bgp302.tst file here
  3. Launch rout-bgp302.tst test: 

   java -jar ../../rtr.jar test tester rout-bgp302 path ./ temp ./ wait
4. Destroy freeRtr rout-bgp302.tst test: 

   Ctrl-C (In freeRtr test window)