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Example: ipv4 over gtp

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r1

hostname r1
vrf def v1
 rd 1:1
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.1 255.255.255.0
 ipv6 addr 1234::1 ffff::
 exit
int lo0
 vrf for v1
 ipv4 addr 4.4.4.4 255.255.255.255
 ipv6 addr 4444::4 ffff::
 exit
ipv4 pool p4 2.2.2.1 0.0.0.1 254
ipv6 pool p6 2222::1111 ::1 254
int di1
 enc iponly
 vrf for v1
 ipv4 addr 2.2.2.0 255.255.255.255
 ipv4 pool p4
 exit
server gtp gtp
 clone di1
 vrf v1
 exit

r2

hostname r2
vrf def v1
 rd 1:1
 exit
proxy-profile p1
 vrf v1
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.2 255.255.255.0
 ipv6 addr 1234::2 ffff::
 exit
int di1
 enc raw
 vrf for v1
 ipv4 addr 3.3.3.3 0.0.0.0
 ipv6 addr 3333::3333 ::
 exit
vpdn gtp
 int di1
 proxy p1
 tar 1.1.1.1
 called inet
 calling 4321
 dir in
 prot gtp
 exit

r2 tping 100 60 4.4.4.4 vrf v1
r2 tping 0 5 4444::4 vrf v1
  1. Install ContainerLab as described here
  2. Fetch conn-gtp02 file
  3. Launch ContainerLab conn-gtp02.yml topology: 

   containerlab deploy --topo conn-gtp02.yml
4. Destroy ContainerLab conn-gtp02.yml topology: 

   containerlab destroy --topo conn-gtp02.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 conn-gtp02.tst file here
  3. Launch conn-gtp02.tst test: 

   java -jar ../../rtr.jar test tester conn-gtp02 path ./ temp ./ wait
4. Destroy freeRtr conn-gtp02.tst test: 

   Ctrl-C (In freeRtr test window)