Skip to content

Example: ibgp with ttl-security

Alt text

r1

hostname r1
vrf def v1
 rd 1:1
 exit
int lo0
 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
access-list test4
 permit 6 any all any all ttl 110-120
 deny 6 any all any all
 permit all any all any all
 exit
access-list test6
 permit 6 any all any all ttl 110-120
 deny 6 any all any all
 permit all any all any all
 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-in test4
 ipv6 access-group-in test6
 ipv4 access-group-out test4
 ipv6 access-group-out test6
 exit
router bgp4 1
 vrf v1
 address uni
 local-as 1
 router-id 4.4.4.1
 neigh 1.1.1.2 remote-as 1
 neigh 1.1.1.2 ttl-sec 115
 neigh 1.1.1.2 connection pass
 red conn
 exit
router bgp6 1
 vrf v1
 address uni
 local-as 1
 router-id 6.6.6.1
 neigh 1234::2 remote-as 1
 neigh 1234::2 ttl-sec 115
 neigh 1234::2 connection pass
 red conn
 exit

r2

hostname r2
vrf def v1
 rd 1:1
 exit
int lo0
 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 eth1
 vrf for v1
 ipv4 addr 1.1.1.2 255.255.255.252
 ipv6 addr 1234::2 ffff:ffff::
 exit
router bgp4 1
 vrf v1
 address uni
 local-as 1
 router-id 4.4.4.2
 neigh 1.1.1.1 remote-as 1
 neigh 1.1.1.1 ttl-sec 115
 neigh 1.1.1.1 connection act
 red conn
 exit
router bgp6 1
 vrf v1
 address uni
 local-as 1
 router-id 6.6.6.2
 neigh 1234::1 remote-as 1
 neigh 1234::1 ttl-sec 115
 neigh 1234::1 connection act
 red conn
 exit

r1 tping 100 60 2.2.2.2 vrf v1
r1 tping 100 60 4321::2 vrf v1
r2 tping 100 60 2.2.2.1 vrf v1
r2 tping 100 60 4321::1 vrf v1
  1. Install ContainerLab as described here
  2. Fetch rout-bgp217 file
  3. Launch ContainerLab rout-bgp217.yml topology: 

   containerlab deploy --topo rout-bgp217.yml
4. Destroy ContainerLab rout-bgp217.yml topology: 

   containerlab destroy --topo rout-bgp217.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-bgp217.tst file here
  3. Launch rout-bgp217.tst test: 

   java -jar ../../rtr.jar test tester rout-bgp217 path ./ temp ./ wait
4. Destroy freeRtr rout-bgp217.tst test: 

   Ctrl-C (In freeRtr test window)