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Example: ocar over srv6 over bgp additional path

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r1

hostname r1
vrf def v1
 rd 1:1
 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 1.1.1.1 255.255.255.0
 ipv6 addr 1234::1 ffff::
 exit
int tun1
 vrf for v1
 ipv6 addr 4321:1:: ffff:ffff::
 tun sour eth1
 tun dest 4321:1::
 tun vrf v1
 tun mod srv6
 exit
ipv6 route v1 4321:2:: ffff:ffff:: 1234::2
router bgp4 1
 vrf v1
 address ocar
 local-as 1
 router-id 4.4.4.1
 neigh 1.1.1.2 remote-as 1
 neigh 1.1.1.2 segrou
 neigh 1.1.1.2 additional-path-rx ocar
 neigh 1.1.1.2 additional-path-tx ocar
 afi-other ena
 afi-other red conn
 afi-other srv6 tun1
 exit
router bgp6 1
 vrf v1
 address ocar
 local-as 1
 router-id 6.6.6.1
 neigh 1234::2 remote-as 1
 neigh 1234::2 segrou
 neigh 1234::2 additional-path-rx ocar
 neigh 1234::2 additional-path-tx ocar
 afi-other ena
 afi-other red conn
 afi-other srv6 tun1
 exit

r2

hostname r2
vrf def v1
 rd 1:1
 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 1.1.1.2 255.255.255.0
 ipv6 addr 1234::2 ffff::
 exit
int tun1
 vrf for v1
 ipv6 addr 4321:2:: ffff:ffff::
 tun sour eth1
 tun dest 4321:2::
 tun vrf v1
 tun mod srv6
 exit
ipv6 route v1 4321:1:: ffff:ffff:: 1234::1
router bgp4 1
 vrf v1
 address ocar
 local-as 1
 router-id 4.4.4.2
 neigh 1.1.1.1 remote-as 1
 neigh 1.1.1.1 segrou
 neigh 1.1.1.1 additional-path-rx ocar
 neigh 1.1.1.1 additional-path-tx ocar
 afi-other ena
 afi-other red conn
 afi-other srv6 tun1
 exit
router bgp6 1
 vrf v1
 address ocar
 local-as 1
 router-id 6.6.6.2
 neigh 1234::1 remote-as 1
 neigh 1234::1 segrou
 neigh 1234::1 additional-path-rx ocar
 neigh 1234::1 additional-path-tx ocar
 afi-other ena
 afi-other red conn
 afi-other srv6 tun1
 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
  1. Install ContainerLab as described here
  2. Fetch rout-bgp735 file
  3. Launch ContainerLab rout-bgp735.yml topology: 

   containerlab deploy --topo rout-bgp735.yml
4. Destroy ContainerLab rout-bgp735.yml topology: 

   containerlab destroy --topo rout-bgp735.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-bgp735.tst file here
  3. Launch rout-bgp735.tst test: 

   java -jar ../../rtr.jar test tester rout-bgp735 path ./ temp ./ wait
4. Destroy freeRtr rout-bgp735.tst test: 

   Ctrl-C (In freeRtr test window)