Example: nsh chain

TopologyConfigurationsVerificationEmulation

r1

hostname r1
vrf def v1
 rd 1:1
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.1 255.255.255.0
 ipv6 addr 1111::1 ffff::
 exit

r2

hostname r2
int eth1
 nsh ena
 nsh xconn 2 255
 exit
int eth2
 nsh ena
 exit
nsh 2 255 int eth2 0000.1111.2222
nsh 3 253 int eth1 0000.1111.2222 rawpack keephdr

r3

hostname r3
int eth1
 nsh ena
 exit
int eth2
 nsh ena
 exit
nsh 3 254 int eth1 0000.1111.2222
nsh 2 254 int eth2 0000.1111.2222

r4

hostname r4
int eth1
 nsh ena
 exit
int eth2
 nsh ena
 nsh xconn 3 255
 exit
nsh 3 255 int eth1 0000.1111.2222
nsh 2 253 int eth2 0000.1111.2222 rawpack keephdr

r5

hostname r5
vrf def v1
 rd 1:1
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.2 255.255.255.0
 ipv6 addr 1111::2 ffff::
 exit

r1 tping 100 10 1.1.1.2 vrf v1
r1 tping 100 10 1111::2 vrf v1
r5 tping 100 10 1.1.1.1 vrf v1
r5 tping 100 10 1111::1 vrf v1

ContainerLabfreeRtr CLI

1. Install ContainerLab as described here
2. Fetch mpls-nsh09 file
3. Launch ContainerLab mpls-nsh09.yml topology:

   containerlab deploy --topo mpls-nsh09.yml  

4. Destroy ContainerLab mpls-nsh09.yml topology:

   containerlab destroy --topo mpls-nsh09.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-nsh09.tst file here
3. Launch mpls-nsh09.tst test:

   java -jar ../../rtr.jar test tester mpls-nsh09 path ./ temp ./ wait

4. Destroy freeRtr mpls-nsh09.tst test:

   Ctrl-C (In freeRtr test window)