1、路由反射器解析

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路由反射器工作原理：

RR從EBGP收到的路由，會(huì)反射給客戶端和非客戶端

RR從客戶端收到的路由，會(huì)反射給客戶端、EBGP鄰居和非客戶端

RR從非客戶端收到的路由，只會(huì)反射給客戶端和EBGP鄰居，不會(huì)反射給非客戶端

2、實(shí)驗(yàn)拓?fù)?/p>

3、基礎(chǔ)配置

R1配置

interface Loopback0

 ip address 1.1.1.1 255.255.255.0

interface Serial0/0

 ip address 12.1.1.1 255.255.255.0

router bgp 1

 no synchronization

 bgp router-id 1.1.1.1

 network 1.1.1.0 mask 255.255.255.0

 neighbor 12.1.1.2 remote-as 2

 no auto-summary

R2配置

interface Loopback0

 ip address 2.2.2.2 255.255.255.0

interface Serial0/0

 ip address 12.1.1.2 255.255.255.0

interface Serial0/1

 ip address 23.1.1.2 255.255.255.0

router ospf 110

 router-id 2.2.2.2

 network 2.2.2.0 0.0.0.255 area 0

 network 23.1.1.0 0.0.0.255 area 0

router bgp 2

 no synchronization

 bgp router-id 2.2.2.2

 neighbor 3.3.3.3 remote-as 2

 neighbor 3.3.3.3 update-source Loopback0

 neighbor 3.3.3.3 next-hop-self

 neighbor 12.1.1.1 remote-as 1

 no auto-summary

R3配置

interface Loopback0

 ip address 3.3.3.3 255.255.255.0

interface Serial0/0

 ip address 34.1.1.3 255.255.255.0

interface Serial0/1

 ip address 23.1.1.3 255.255.255.0

router ospf 110

 router-id 3.3.3.3

 network 3.3.3.0 0.0.0.255 area 0

 network 23.1.1.0 0.0.0.255 area 0

 network 34.1.1.0 0.0.0.255 area 0

router bgp 2

 no synchronization

 bgp router-id 3.3.3.3

 neighbor 2.2.2.2 remote-as 2

 neighbor 2.2.2.2 update-source Loopback0

 neighbor 4.4.4.4 remote-as 2

 neighbor 4.4.4.4 update-source Loopback0

 no auto-summary

R4配置

interface Loopback0

 ip address 4.4.4.4 255.255.255.0

interface Serial0/0

 ip address 34.1.1.4 255.255.255.0

router ospf 110

 router-id 4.4.4.4

 network 4.4.4.0 0.0.0.255 area 0

 network 34.1.1.0 0.0.0.255 area 0

router bgp 2

 no synchronization

 bgp router-id 4.4.4.4

 neighbor 3.3.3.3 remote-as 2

 neighbor 3.3.3.3 update-source Loopback0

 no auto-summary

4、水平分割導(dǎo)致的問(wèn)題

5、配置路由反射器解決水平分割

R3配置

router bgp 2

 neighbor 2.2.2.2 route-reflector-client

 neighbor 4.4.4.4 route-reflector-client