实验要求: 1.1.1.1访问5.5.5.5走R1-R2-R4-R5
5.5.5.5访问1.1.1.1走R5-R4-R3-R1
一、配置IP
二、为R2、R3、R4配置IGP动态路由OSPF
R2:
ospf 100
area 0.0.0.0
network 12.1.1.0 0.0.0.255
network 24.1.1.0 0.0.0.255
R3:
ospf 100
area 0.0.0.0
network 13.1.1.0 0.0.0.255
network 34.1.1.0 0.0.0.255
R4:
ospf 100
area 0.0.0.0
network 24.1.1.0 0.0.0.255
network 45.1.1.0 0.0.0.255
network 34.1.1.0 0.0.0.255
配置bgp
R1:
bgp 100
router-id 1.1.1.1
peer 12.1.1.2 as-number 200
peer 13.1.1.3 as-number 200
network 1.1.1.1 255.255.255.255
R2:
bgp 200
router-id 2.2.2.2
peer 12.1.1.1 as-number 100
peer 24.1.1.4 as-number 200
import-route ospf 100
peer 24.1.1.4 next-hop-local
R3:
bgp 200
router-id 3.3.3.3
peer 13.1.1.1 as-number 100
peer 34.1.1.4 as-number 200
import-route ospf 100
peer 34.1.1.4 next-hop-local
R4:
bgp 200
router-id 4.4.4.4
peer 24.1.1.2 as-number 200
peer 34.1.1.3 as-number 200
peer 45.1.1.5 as-number 300
undo synchronization
import-route ospf 100
peer 24.1.1.2 next-hop-local
peer 34.1.1.3 next-hop-local
R5:
bgp 300
router-id 5.5.5.5
peer 45.1.1.4 as-number 200
network 5.5.5.5 255.255.255.255
配置选路规则
R2:
route-policy shang permit node 10 (shang为名字，可以自己设置)
apply local-preference 222
bgp 200
peer 12.1.1.1 route-policy shang export
R3
route-policy xie permit node 10 (xia为名字，可以自己设置)
apply local-preference 222
bgp 200
peer 34.1.1.4 route-policy xie export