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Example: ipv4 and ipv6 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
 ipv6 addr 2222::0 ffff::
 ipv6 pool p6
 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 100 5 4444::4 vrf v1
  1. Install ContainerLab as described here
  2. Fetch conn-gtp04 file
  3. Launch ContainerLab conn-gtp04.yml topology: 

   containerlab deploy --topo conn-gtp04.yml
4. Destroy ContainerLab conn-gtp04.yml topology: 

   containerlab destroy --topo conn-gtp04.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-gtp04.tst file here
  3. Launch conn-gtp04.tst test: 

   java -jar ../../rtr.jar test tester conn-gtp04 path ./ temp ./ wait
4. Destroy freeRtr conn-gtp04.tst test: 

   Ctrl-C (In freeRtr test window)