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Example: interop1: bgp aspath

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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 2.2.2.1 255.255.255.255
 ipv6 addr 4321::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
route-map rm1
 sequence 10 act deny
  match aspath .*1234.*
 sequence 20 act permit
 exit
router bgp4 1
 vrf v1
 no safe-ebgp
 address uni
 local-as 1
 router-id 4.4.4.1
 neigh 1.1.1.2 remote-as 2
 neigh 1.1.1.2 route-map-in rm1
 red conn
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 address uni
 local-as 1
 router-id 6.6.6.1
 neigh 1234::2 remote-as 2
 neigh 1234::2 route-map-in rm1
 red conn
 exit

r2

hostname r2
ip routing
ipv6 unicast-routing
interface loopback0
 ip addr 2.2.2.2 255.255.255.255
 ipv6 addr 4321::2/128
 exit
interface loopback1
 ip addr 2.2.2.3 255.255.255.255
 ipv6 addr 4321::3/128
 exit
interface loopback2
 ip addr 2.2.2.4 255.255.255.255
 ipv6 addr 4321::4/128
 exit
interface gigabit1
 ip address 1.1.1.2 255.255.255.0
 ipv6 address 1234::2/64
 no shutdown
 exit
ip prefix-list pl4 seq 5 permit 2.2.2.3/32
ipv6 prefix-list pl6 seq 5 permit 4321::3/128
route-map rm4 permit 10
 match ip address prefix-list pl4
 set as-path prepend 1234
 exit
route-map rm4 permit 20
 set as-path prepend 4321
 exit
route-map rm6 permit 10
 match ipv6 address prefix-list pl6
 set as-path prepend 1234
 exit
route-map rm6 permit 20
 set as-path prepend 4321
 exit
router bgp 2
 address-family ipv4 unicast
  neighbor 1.1.1.1 remote-as 1
  neighbor 1.1.1.1 route-map rm4 out
  redistribute connected
 address-family ipv6 unicast
  neighbor 1234::1 remote-as 1
  neighbor 1234::1 route-map rm6 out
  redistribute connected
 exit

r1 tping 100 10 1.1.1.2 vrf v1
r1 tping 100 10 1234::2 vrf v1
r1 tping 100 120 2.2.2.2 vrf v1 sou lo0
r1 tping 100 120 4321::2 vrf v1 sou lo0
r1 tping 0 120 2.2.2.3 vrf v1 sou lo0
r1 tping 0 120 4321::3 vrf v1 sou lo0
r1 tping 100 120 2.2.2.4 vrf v1 sou lo0
r1 tping 100 120 4321::4 vrf v1 sou lo0
  1. Install ContainerLab as described here
  2. Fetch intop1-bgp07 file
  3. Launch ContainerLab intop1-bgp07.yml topology: 

   containerlab deploy --topo intop1-bgp07.yml
4. Destroy ContainerLab intop1-bgp07.yml topology: 

   containerlab destroy --topo intop1-bgp07.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 intop1-bgp07.tst file here
  3. Launch intop1-bgp07.tst test: 

   java -jar ../../rtr.jar test tester intop1-bgp07 path ./ temp ./ wait
4. Destroy freeRtr intop1-bgp07.tst test: 

   Ctrl-C (In freeRtr test window)