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Example: ospf inter area ingress filtering with prefixlist

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r1

hostname r1
vrf def v1
 rd 1:1
 exit
router ospf4 1
 vrf v1
 router 4.4.4.1
 area 0 ena
 red conn
 exit
router ospf6 1
 vrf v1
 router 6.6.6.1
 area 0 ena
 red conn
 exit
int lo1
 vrf for v1
 ipv4 addr 2.2.2.1 255.255.255.255
 ipv6 addr 4321::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo2
 vrf for v1
 ipv4 addr 2.2.2.11 255.255.255.255
 ipv6 addr 4321::11 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.1 255.255.255.252
 ipv6 addr 1234:1::1 ffff:ffff::
 router ospf4 1 ena
 router ospf6 1 ena
 exit

r2

hostname r2
vrf def v1
 rd 1:1
 exit
prefix-list p4
 sequence 10 deny 2.2.2.8/29 le 32
 sequence 20 permit 0.0.0.0/0 le 32
 exit
prefix-list p6
 sequence 10 deny 4321::10/124 le 128
 sequence 20 permit ::/0 le 128
 exit
router ospf4 1
 vrf v1
 router 4.4.4.2
 area 0 ena
 area 1 ena
 red conn
 area 0 prefix-list-from p4
 area 1 prefix-list-from p4
 exit
router ospf6 1
 vrf v1
 router 6.6.6.2
 area 0 ena
 area 1 ena
 red conn
 area 0 prefix-list-from p6
 area 1 prefix-list-from p6
 exit
int lo1
 vrf for v1
 ipv4 addr 2.2.2.2 255.255.255.255
 ipv6 addr 4321::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo2
 vrf for v1
 ipv4 addr 2.2.2.12 255.255.255.255
 ipv6 addr 4321::12 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.2 255.255.255.252
 ipv6 addr 1234:1::2 ffff:ffff::
 router ospf4 1 ena
 router ospf6 1 ena
 exit
int eth2
 vrf for v1
 ipv4 addr 1.1.1.5 255.255.255.252
 ipv6 addr 1234:2::1 ffff:ffff::
 router ospf4 1 ena
 router ospf4 1 area 1
 router ospf6 1 ena
 router ospf6 1 area 1
 exit

r3

hostname r3
vrf def v1
 rd 1:1
 exit
router ospf4 1
 vrf v1
 router 4.4.4.3
 area 1 ena
 red conn
 exit
router ospf6 1
 vrf v1
 router 6.6.6.3
 area 1 ena
 red conn
 exit
int lo1
 vrf for v1
 ipv4 addr 2.2.2.3 255.255.255.255
 ipv6 addr 4321::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo2
 vrf for v1
 ipv4 addr 2.2.2.13 255.255.255.255
 ipv6 addr 4321::13 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.6 255.255.255.252
 ipv6 addr 1234:2::2 ffff:ffff::
 router ospf4 1 ena
 router ospf6 1 ena
 exit

r1 tping 100 40 2.2.2.2 vrf v1
r1 tping 100 40 4321::2 vrf v1
r1 tping 100 40 2.2.2.3 vrf v1
r1 tping 100 40 4321::3 vrf v1
r2 tping 100 40 2.2.2.1 vrf v1
r2 tping 100 40 4321::1 vrf v1
r2 tping 100 40 2.2.2.3 vrf v1
r2 tping 100 40 4321::3 vrf v1
r3 tping 100 40 2.2.2.1 vrf v1
r3 tping 100 40 4321::1 vrf v1
r3 tping 100 40 2.2.2.2 vrf v1
r3 tping 100 40 4321::2 vrf v1
r1 tping 100 40 2.2.2.12 vrf v1
r1 tping 100 40 4321::12 vrf v1
r1 tping 0 40 2.2.2.13 vrf v1
r1 tping 0 40 4321::13 vrf v1
r2 tping 0 40 2.2.2.11 vrf v1
r2 tping 0 40 4321::11 vrf v1
r2 tping 0 40 2.2.2.13 vrf v1
r2 tping 0 40 4321::13 vrf v1
r3 tping 0 40 2.2.2.11 vrf v1
r3 tping 0 40 4321::11 vrf v1
r3 tping 100 40 2.2.2.12 vrf v1
r3 tping 100 40 4321::12 vrf v1
r2 output show ipv4 ospf 1 nei
r2 output show ipv6 ospf 1 nei
r2 output show ipv4 ospf 1 dat 0
r2 output show ipv6 ospf 1 dat 0
r2 output show ipv4 ospf 1 tre 0
r2 output show ipv6 ospf 1 tre 0
r2 output show ipv4 route v1
r2 output show ipv6 route v1
  1. Install ContainerLab as described here
  2. Fetch rout-ospf19 file
  3. Launch ContainerLab rout-ospf19.yml topology: 

   containerlab deploy --topo rout-ospf19.yml
4. Destroy ContainerLab rout-ospf19.yml topology: 

   containerlab destroy --topo rout-ospf19.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 rout-ospf19.tst file here
  3. Launch rout-ospf19.tst test: 

   java -jar ../../rtr.jar test tester rout-ospf19 path ./ temp ./ wait
4. Destroy freeRtr rout-ospf19.tst test: 

   Ctrl-C (In freeRtr test window)