frr defaults traditional
hostname isp1
interface eth1
 ip address 100.64.71.1/24
interface eth2
 ip address 10.208.1.1/30
interface eth3
 ip address 10.208.100.1/24
router bgp 64701
 bgp router-id 10.208.0.1
 no bgp ebgp-requires-policy
 timers bgp 3 9
 neighbor 10.208.1.2 remote-as 64710
 neighbor 10.208.1.2 description t (proveedor)
 neighbor 10.208.1.2 advertisement-interval 0
 address-family ipv4 unicast
  network 100.64.71.0/24
 exit-address-family
! Lo que un ISP le ofrece a un peer: solo lo que origina. La sesión se crea en el paso
! de peering; esta regla ya queda lista.
bgp as-path access-list PROPIAS seq 5 permit ^$
route-map SOLO-PROPIAS permit 10
 match as-path PROPIAS