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Example: tunnel interface with mpls

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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 1.1.1.1 255.255.255.0
 ipv6 addr 1234::1 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::2
int tun1
 tun vrf v1
 tun sou lo0
 tun dest 2.2.2.2
 tun key 1234
 tun mod pweompls
 vrf for v1
 ipv4 addr 3.3.3.1 255.255.255.0
 ipv6 addr 3333::1 ffff::
 exit

r2

hostname r2
vrf def v1
 rd 1:1
 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 eth1
 vrf for v1
 ipv4 addr 1.1.1.2 255.255.255.0
 ipv6 addr 1234::2 ffff:ffff::
 mpls enable
 mpls ldp4
 mpls ldp6
 exit
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
int tun1
 tun vrf v1
 tun sou lo0
 tun dest 2.2.2.1
 tun key 1234
 tun mod pweompls
 vrf for v1
 ipv4 addr 3.3.3.2 255.255.255.0
 ipv6 addr 3333::2 ffff::
 exit

r1 tping 100 30 2.2.2.2 vrf v1 sou lo0
r2 tping 100 30 2.2.2.1 vrf v1 sou lo0
r1 tping 100 30 3.3.3.2 vrf v1
r1 tping 100 30 3333::2 vrf v1
r2 tping 100 30 3.3.3.1 vrf v1
r2 tping 100 30 3333::1 vrf v1
  1. Install ContainerLab as described here
  2. Fetch mpls-pwe22 file
  3. Launch ContainerLab mpls-pwe22.yml topology: 

   containerlab deploy --topo mpls-pwe22.yml
4. Destroy ContainerLab mpls-pwe22.yml topology: 

   containerlab destroy --topo mpls-pwe22.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 mpls-pwe22.tst file here
  3. Launch mpls-pwe22.tst test: 

   java -jar ../../rtr.jar test tester mpls-pwe22 path ./ temp ./ wait
4. Destroy freeRtr mpls-pwe22.tst test: 

   Ctrl-C (In freeRtr test window)