AS 100인 R3와 AS20의 R5 BGP 연결
R3
router bgp 100
neighbor 1.1.35.2 remote-as 20
R5
router bgp 20
neighbor 1.1.35.1 remote-as 100
network 5.5.5.0 mask 255.255.255.0
R5
sh ip route
routing 테이블에 대역이 올라왔지만 핑 전송 x
넥스트 홉 self의 문제점을 해결해야 핑 전송 가능
R3(config-router)#neighbor 1.1.1.1 next-hop-self
R3(config-router)#neighbor 2.2.2.2 next-hop-self
R6,R7,R8 : RIP 완료 -> iBGP , R4-R6, R5-R8 : eBGP
기존 랩에서 추가
R6
router rip
version 2
network 1.0.0.0
network 2.0.0.0
network 6.0.0.0
no auto-summary
router bgp 200
network 6.6.6.0 mask 255.255.255.0
neighbor 2.2.46.2 remote-as 10
neighbor 7.7.7.7 remote-as 200
neighbor 7.7.7.7 update-source Loopback0
neighbor 7.7.7.7 next-hop-self
R7
router rip
version 2
network 1.0.0.0
network 7.0.0.0
no auto-summary
router bgp 200
network 7.7.7.0 mask 255.255.255.0
neighbor 6.6.6.6 remote-as 200
neighbor 6.6.6.6 update-source Loopback0
neighbor 80.80.80.80 remote-as 200
neighbor 80.80.80.80 update-source Loopback0
R8
router rip
version 2
network 1.0.0.0
network 2.0.0.0
network 80.0.0.0
no auto-summary
router bgp 200
network 80.80.80.0 mask 255.255.255.0
neighbor 2.2.58.2 remote-as 20
neighbor 7.7.7.7 remote-as 200
neighbor 7.7.7.7 update-source Loopback0
neighbor 7.7.7.7 next-hop-self
R6,R8 : next-hop-self 설정
R4
router bgp 10
neighbor 2.2.46.1 remote-as 200
R5
router bgp 20
neighbor 2.2.58.1 remote-as 200
RR (Route Reflector) 설정
스플릿 호라이즌 면제 받은 라우터
-> IBGP 부터 전달받은 AS 정보를 iBGP로 전송할 수 있음
-> cluster(클러스터) RouteReflector,RouteReflectorClient로 역할이 나뉨
R7(config)#router bgp 200
R7(config-router)#neighbor 6.6.6.6 route-reflector-client
R7(config-router)#neighbor 80.80.80.80 route-reflector-client
핑테스트
R4 에서 nat 설정 추가 후 외부 핑 테스트
R4
int g2/0
ip nat inside
