Example: egress ttl matching hierarchical access list

TopologyConfigurationsVerificationEmulation

r1

hostname r1
access-list test4a
 permit all any all any all ttl 110-120
 exit
access-list test6a
 permit all any all any all ttl 110-120
 exit
access-list test4b
 evaluate deny test4a
 permit all any all any all
 exit
access-list test6b
 evaluate deny test6a
 permit all any all any all
 exit
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 ffff:ffff::
 ipv4 access-group-out test4b
 ipv6 access-group-out test6b
 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::2 ffff:ffff::
 exit

r2 tping 100 5 1.1.1.1 vrf v1 ttl 90
r2 tping 100 5 1234::1 vrf v1 ttl 90
r1 tping 100 5 1.1.1.2 vrf v1 ttl 90
r1 tping 100 5 1234::2 vrf v1 ttl 90
r2 tping 100 5 1.1.1.1 vrf v1 ttl 115
r2 tping 100 5 1234::1 vrf v1 ttl 115
r1 tping 0 5 1.1.1.2 vrf v1 ttl 115
r1 tping 0 5 1234::2 vrf v1 ttl 115
r2 tping 100 5 1.1.1.1 vrf v1 ttl 130
r2 tping 100 5 1234::1 vrf v1 ttl 130
r1 tping 100 5 1.1.1.2 vrf v1 ttl 130
r1 tping 100 5 1234::2 vrf v1 ttl 130

ContainerLabfreeRtr CLI

1. Install ContainerLab as described here
2. Fetch crypt-acl54 file
3. Launch ContainerLab crypt-acl54.yml topology:

   containerlab deploy --topo crypt-acl54.yml  

4. Destroy ContainerLab crypt-acl54.yml topology:

   containerlab destroy --topo crypt-acl54.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 crypt-acl54.tst file here
3. Launch crypt-acl54.tst test:

   java -jar ../../rtr.jar test tester crypt-acl54 path ./ temp ./ wait

4. Destroy freeRtr crypt-acl54.tst test:

   Ctrl-C (In freeRtr test window)