ccnp 9일째

 BGP 에서 .관계를 피어 ...네이버   peers = neighbors 


다른 as 시스템간에 ....네이버는 EBGP 익스터널BGP




===========================================================


as1                                        as2
R 4----------------    R 1-------------------------- R2

             10.1.41.0                        10.1.12.0
R4
router bgp 1
neighbor 10.1.41.1 remote-as 2


R4

router eigrp 109
network 10.1.41.0 0.0.0.255


R1
router bgp 2
 neighbor 10.1.41.4 remote-as 1 (ebgp)
 neighbor 10.1.12.2 remote -as 2 (ibgp)


R2
router bgp 2
neighbor 10.1.12.1 rebote -as 2 ( ibgp)
network 2.2.2.0 mask 255.255.255.0


show ip bgp summary (show ip bgp neighbor)



3대 법칙
 
1. next -hop
(next 도달가능 유무)


2.sprit-horizon
(ibgp ->ibgp)
=full mach

3. sync
ibgp -> igp 확인)

cospf.eigrp
끄는 명령어 no sy
===================================================================

router bgp 2
neighbor 10.1.23.3 remote-as 2


--------------------------------------------------------
R1

router bgp 2
network 10.1.12.0 mask 255.255.255.0

R2
rotuer bgp 2
network 10.1.23.0 mask 255.255.255.0


no router bgp 2
no router ospf 1



문제 5

R1 적용되는 법칙 없음

문제 6
R2 (next-hop문제 ) ==> connected redi
     (sync문제)      ===> nosync

문제 7
R3  (sprit-horizon문제) ==> full mesh
(next-hop문제) ==> connected redi
(sync문제) ==> no sync

-------------------------------------------------------------------------------------------

D

router bgp 65102
nei 1.1.1.1 remote-as 645102
nei 1.1.1.1 update-source loopback 0


A
router bgp 65102
nei 4.4.4.4 remote-ad 65102
nei 4.4.4.4 update-source lo 0


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9일차 ...25 장 ..






igp 에서
B
router ospf 1
redistribute connected subnets


BGP
B

router bgp
neighbor 172.20.10.2