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Example: cross connect with erspan

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r1

hostname r1
vrf def v1
 rd 1:1
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.1 255.255.255.252
 ipv6 addr 1234:1::1 ffff:ffff::
 exit
int tun1
 tunnel vrf v1
 tunnel mode erspan
 tunnel key 123
 tunnel source ethernet1
 tunnel destination 1.1.1.2
 vrf for v1
 ipv4 addr 2.2.2.1 255.255.255.0
 ipv6 addr 4321::1 ffff::
 exit

r2

hostname r2
vrf def v1
 rd 1:1
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.2 255.255.255.252
 ipv6 addr 1234:1::2 ffff:ffff::
 exit
int eth2
 vrf for v1
 ipv4 addr 1.1.1.5 255.255.255.252
 ipv6 addr 1234:2::1 ffff:ffff::
 exit
xconnect con
 side1 v1 eth1 erspan 1.1.1.1 123
 side2 v1 eth2 erspan 1234:2::2 123
 exit

r3

hostname r3
vrf def v1
 rd 1:1
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.6 255.255.255.252
 ipv6 addr 1234:2::2 ffff:ffff::
 exit
int tun1
 tunnel vrf v1
 tunnel mode erspan
 tunnel key 123
 tunnel source ethernet1
 tunnel destination 1234:2::1
 vrf for v1
 ipv4 addr 2.2.2.2 255.255.255.0
 ipv6 addr 4321::2 ffff::
 exit

r2 tping 100 5 1.1.1.1 vrf v1
r2 tping 100 5 1234:2::2 vrf v1
r1 tping 100 5 2.2.2.2 vrf v1
r3 tping 100 5 2.2.2.1 vrf v1
  1. Install ContainerLab as described here
  2. Fetch mpls-xconn05 file
  3. Launch ContainerLab mpls-xconn05.yml topology: 

   containerlab deploy --topo mpls-xconn05.yml
4. Destroy ContainerLab mpls-xconn05.yml topology: 

   containerlab destroy --topo mpls-xconn05.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-xconn05.tst file here
  3. Launch mpls-xconn05.tst test: 

   java -jar ../../rtr.jar test tester mpls-xconn05 path ./ temp ./ wait
4. Destroy freeRtr mpls-xconn05.tst test: 

   Ctrl-C (In freeRtr test window)