Настройка протокола BGPv4
ip prefix-list AS12345 seq 5 permit x.x.x.x/y le 24
ip prefix-list AS12345 seq 10 permit xx.xx.xx.xx/yy le 24
!
route-map RM-SIBIR-IX-OUT permit 10
match ip address prefix-list AS12345
!
router bgp AS12345
no bgp enforce-first-as
neighbor 185.1.81.1 remote-as 60763
neighbor 185.1.81.1 route-map RM-SIBIR-IX-OUT out
neighbor 185.1.81.254 remote-as 60763
neighbor 185.1.81.254 route-map RM-SIBIR-IX-OUT out

AS12345 - Номер автономной системы участника