路由反射器（RR）在BGP中的使用

Posted 2021-03-02

路由反射器（RR）在BGP中的使用

拓扑图拓扑图

?实验目的：

1.验证非客户端产生的路由通过RR传递给反射客户端和EBGP 邻居

2.验证反射客户端产生的路由通过RR传递给非客户端，其它反射客户端，EBGP邻居

3.验证路由簇采用簇ID的如何防环。

4.验证路由族如何采用族的起源ID进行防环

实验要求：

1.路由器链路之间采用XY.1.1.X.y/24的形式配置IP地址，环回口地址配置为X.X.X.X/32地址

2.各路由器配置Router-id为环回口地址。

3.在AS100内部采用OSPF协议，在AS200 内部采用ISIS协议

4.在AS100内部配置R1，R7为路由反射器

5.在AS100内R4，R5为R1，R7的路由反射客户端，R2，R3为R1，R7的非客户端。

6.在R2上network路由

实验步骤：

1.配置各路由器的IP地址

2.配置AS100内IGP的OSPF协议，AS200内IGP的ISIS协议

3.配置AS100，AS200的内的IBGP邻居，AS100和AS200之间的EBGP邻居

4.配置路由R1，R7为反射器

实验配置：

路由的基础配置，如下：

#R1的配置

[R1]interface GigabitEthernet 0/0/0 //进入接口

[R1-GigabitEthernet0/0/0]IP address 14.1.1.1 255.255.255.0 //配置接口IP地址

[R1-GigabitEthernet0/0/0]quit //退出接口

[R1]interface GigabitEthernet 0/0/1 //进入接口

[R1-GigabitEthernet0/0/1]ip address 15.1.1.1 255.255.255.0 //配置接口IP地址

[R1-GigabitEthernet0/0/1]quit //退出接口

[R1]interface GigabitEthernet 0/0/2 //进入接口

[R1-GigabitEthernet0/0/2]ip address 73.1.1.1 255.255.255.0 //配置接口IP地址

[R1-GigabitEthernet0/0/2]quit //退出接口

[R1]interface GigabitEthernet 4/0/0

[R1-GigabitEthernet4/0/0]ip address 13.1.1.1 255.255.255.0

[R1-GigabitEthernet4/0/0]quit

[R1]interface GigabitEthernet 4/0/1 //进入接口

[R1-GigabitEthernet4/0/1]ip address 16.1.1.1 255.255.255.0 //配置接口地址

[R1-GigabitEthernet4/0/1]quit //退出接口

[R1]interface GigabitEthernet 4/0/2 // 进入接口GigabitEthernet4/0/0

[R1-GigabitEthernet4/0/2]ip address 71.1.1.1 255.255.255.0 //配置接口下的IP地址

[R1-GigabitEthernet4/0/2]quit //退出接口

[R1]interface loopback 0 //进入接口

[R1-Loopback0]ip address 1.1.1.1 32 //配置接口的IP地址

[R1-Loopback0]quit //退出接口

[R1]Router id 1.1.1.1 //配置路由器的router-id

[R1]ospf 10 //开启OSPF进程10

[R1-OSPF-10]area 0 //进入区域0

[R1-OSPF-10-0.0.0.0]network 1.1.1.1 0.0.0.0 //宣告接口的路由

[R1-OSPF-10-0.0.0.0]network 71.1.1.0 0.0.0.255

[R1-OSPF-10-0.0.0.0]network 12.1.1.0 0.0.0.255

[R1-OSPF-10-0.0.0.0]network 13.1.1.0 0.0.0.255

[R1-OSPF-10-0.0.0.0]network 73.1.1.0 0.0.0.255

[R1-OSPF-10-0.0.0.0]network 14.1.1.0 0.0.0.255

[R1-OSPF-10-0.0.0.0]network 15.1.1.0 0.0.0.255

[R1-OSPF-10-0.0.0.0]quit

[R1-OSP-10]quit

[R1]bgp 100 //开启BGP100进程

[R1-bgp-100]peer 2.2.2.2 as -number 100 //IBGP的对等体

[R1-bgp-100]peer 2.2.2.2 connect-interface Loopback0 //配置对等体起源接口

[R1-bgg-100]peer 3.3.3.3 as-number 100

[R1-bgp-100]peer 3.3.3.3 connect-interface Loopback0 //配置对等体起源接口

[R1-bgp-100]peer 4.4.4.4 as-number 100 //配置IBGP的对等体

[R1-bgp-100]peer 4.4.4.4 connect-interface Loopback0 //配置对等体起源接口

[R1-bgp-100]peer 5.5.5.5 as-number 100 //配置IBGP的对等体

[R1-bgp-100]peer 5.5.5.5 connect-interface Loopback0 //配置对等体的起源接口

[R1-bgp-100]peer 1.1.1.1 as-number 100

[R1-bgp-100]peer 1.1.1.1 connect-interface Loopback0

[R1-bgp-100]peer 6.6.6.6 as-number 200

[R1-bgp-100]peer 6.6.6.6 connect-interface Loopback 0

[R1-bgp-100]peer 6.6.6.6 edge-max-hop 3

[R1-bgp-100]peer 2.2.2.2 reflict-clinet

[R1-bgp-100]peer 3.3.3.3 reflict-clinet

[R1-bgp-100]peer 4.4.4.4 reflict-clinet

[R1-bgp-100]peer 5.5.5.5 reflict-clinet

[R1-bgp-100]quit

[R1]ip route-static 6.6.6.6 32 16.1.1.6 //配置静态路由

#R2的配置

[R2]interface GigabitEthernet 0/0/0

[R2-GigabitEthernet0/0/0]IP address 12.1.1.2 255.255.255.0

[R2-GigabitEthernet0/0/0]quit

[R2]interface GigabitEthernet 0/0/1

[R2-GigabitEthernet0/0/1]ip address 72.1.1.2 255.255.255.0

[R2-GigabitEthernet0/0/1]quit

[R2]interface Loopback0

[R2-Loopback0]ip address 2.2.2.2 255.255.255.255

[R2-Loopback0]quit

[R2]router id 2.2.2.2

[R2]ospf 10

[R2-OSPf-10]area 0

[R2-OSPF-10-0.0.0.0]network 12.1.1.0 0.0.0.255

[R2-OSPF-10-0.0.0.0]network 72.1.1.0 0.0.0.255

[R2-OSPF-10-0.0.0.0]network 2.2.2.2 0.0.0.0

[R2-OSPF-10-0.0.0.0]quit

[R2-OSPF-10]quit

[R2]bgp 100

[R2-bgp-100]peer 1.1.1.1 as-number 100

[R2-bgp-100]peer 1.1.1.1 connnect-interface loopback 0

[R2-bgp-100]peer 7.7.7.7 as-bumber 100

[R2-bgp-100]peer 7.7.7.7 connect-interface loopback 0

[R2-bgp-100]quit

[R2]

#R3的配置

[R3]interface GigabitEthernet 0/0/0

[R3-GigabitEthernet0/0/0]IP address 13.1.1.3 255.255.255.0

[R3-GigabitEthernet0/0/0]quit

[R3]interface GigabitEthernet 0/0/1

[R3-GigabitEthernet0/0/1]ip address 73.1.1.3 255.255.255.0

[R3-GigabitEthernet0/0/1]quit

[R3]interface Loopback0

[R3-Loopback0]ip address 3.3.3.3 255.255.255.255

[R3-Loopback0]quit

[R3]router id 3.3.3.3

[R3]ospf 10

[R3-OSPF-10]area 0

[R3-OSPF-10-0.0.0.0]netwrok 13.1.1.0 0.0.0.255

[R3-OSPF-10-0.0.0.0]network 73.1.1.0 0.0.0.255

[R3-OSPF-10-0.0.0.0]network 3.3.3.3 0.0.0.0

[R3-OSPF-10-0.0.0.0]quit

[R3-OSPF-10]quit

[R3]bgp 100

[R3-bgp-100]peer 1.1.1.1 as-number 100

[R3-bgp-100]peer 1.1.1.1 connect-interface loopback 0

[R3-bgp-100]peer 7.7.7.7 as-number 100

[R3-bgp-100]peer 7.7.7.7 connect-interface loopback 0

[R3-bgp-100]quit

[R3]

#R4的配置

[R4]interface GigabitEthernet 0/0/0

[R4-GigabitEthernet0/0/0]IP address 14.1.1.4 255.255.255.0

[R4-GigabitEthernet0/0/0]quit

[R4]interface GigabitEthernet 0/0/1

[R4-GigabitEthernet0/0/1]ip address 74.1.1.4 255.255.255.0

[R4-GigabitEthernet0/0/1]quit

[R4]interface Loopback0

[R4-Loopback0]ip address 4.4.4.4 255.255.255.255

[R4-Loopback0]quit

[R4]router id 4.4.4.4

[R4]ospf 10

[R4-OSPF-10]area 0

[R4-OSPF-10-0.0.0.0]network 14.1.1.0 0.0.0.255

[R4-OSPF-10-0.0.0.0]network 74.1.1.0 0.0.0.255

[R4-OSPF-10-0.0.0.0]network 4.4.4.4 0.0.0.0

[R4-OSPF-10-0.0.0.0]quit

[R4-OSPF-10]quit

[R4]bgp 100

[R4-bgp-100]peer 1.1.1.1 as-number 100

[R4-bgp-100]peer 1.1.1.1 connect-interface loopback 0

[R4-bgp-100]peer 7.7.7.7 as-number 100

[R4-bgp-100]peer 7.7.7.7 connect-interface loopback 0

[R4-bgp-100]quit

[R4]

#R5的配置

[R5]interface GigabitEthernet 0/0/0

[R5-GigabitEthernet0/0/0]IP address 15.1.1.5 255.255.255.0

[R5-GigabitEthernet0/0/0]quit

[R5]interface GigabitEthernet 0/0/1

[R5-GigabitEthernet0/0/1]ip address 75.1.1.5 255.255.255.0

[R5-GigabitEthernet0/0/1]quit

[R5]interface Loopback0

[R5-Loopback0]ip address 2.2.2.2 255.255.255.255

[R5-Loopback0]quit

[R5]router id 5.5.5.5

[R5]ospf 10

[R5-OSPF-10]area 0

[R5-OSPF-10-0.0.0.0]network 5.5.5.5 0.0.0.0

[R5-OSPF-10-0.0.0.0]network 15.1.1.0 0.0.0.255

[R5-OSPF-10-0.0.0.0]network 75.1.1.0 0.0.0.255

[R5-OSPF-10-0.0.0.0]quit

[R5-OSPF-10]quit

[R5]bgp 100

[R5-bgp-100]peer 1.1.1.1 as-number 100

[R5-bgp-100]peer 1.1.1.1 connect-interface loopback 0

[R5-bgp-100]peer 7.7.7.7 as-number 100

[R5-bgp-100]peer 7.7.7.7 connect-interface loopback 0

[R5-bgp-100]quit

[R5]

#R6的配置

[R6]interface GigabitEthernet 0/0/0

[R6-GigabitEthernet0/0/0]IP address 16.1.1.6 255.255.255.0

[R6-GigabitEthernet0/0/0]quit

[R6]interface GigabitEthernet 0/0/1

[R6-GigabitEthernet0/0/1]ip address 69.1.1.6 255.255.255.0

[R6-GigabitEthernet0/0/1]ISIS enable

[R6-GigabitEthernet0/0/1]quit

[R6]interface Loopback0

[R6-Loopback0]ip address 6.6.6.6 255.255.255.255

[R6-Loopback0]isis enable

[R6-Loopback0]quit

[R6]router id 6.6.6.6

[R6]isis 1

[R6-isis-1]network-entity 49.0012.0000.0000.1111.00

[R6-isis-1]is-level level-2

[R6-isis-1]quit

[R6]bgp 200

[R6-bgp-200]peer 9.9.9.9 as-number 200

[R6-bgp-200]peer 9.9.9.9 connect-interface loopback 0

[R6-bgp-200]peer 1.1.1.1 as-number 100

[R6-bgp-200]peer 1.1.1.1 connect-interface loopback 0

[R6-bgp-200]peer 1.1.1.1 edge-max-hop 3

[R6-bgp-200]quit

[R6]ip route-static 1.1.1.1 32 16.1.1.1

R#R7的配置

[R7]interface GigabitEthernet 0/0/0

[R7-GigabitEthernet0/0/0]IP address 74.1.1.7 255.255.255.0

[R7-GigabitEthernet0/0/0]quit

[R7]interface GigabitEthernet 0/0/1

[R7-GigabitEthernet0/0/1]ip address 75.1.1.7 255.255.255.0

[R7-GigabitEthernet0/0/1]quit

[R7]interface GigabitEthernet 0/0/2

[R7-GigabitEthernet0/0/2]ip address 72.1.1.7 255.255.255.0

[R7-GigabitEthernet0/0/2]quit

[R7]interface GigabitEthernet 4/0/0

[R7-GigabitEthernet4/0/0]ip address 73.1.1.7 255.255.255.0

[R7-GigabitEthernet4/0/0]quit

[R7]interface GigabitEthernet 4/0/1

[R7-GigabitEthernet4/0/1]ip address 71.1.1.7 255.255.255.0

[R7-GigabitEthernet4/0/1]quit

[R7]interface GigabitEthernet 4/0/2

[R7-GigabitEthernet4/0/2]ip address 78.1.1.7 255.255.255.0

[R7-GigabitEthernet4/0/2]quit

[R7]interface Loopback0

[R7-Loopback0]ip address 7.7.7.7 255.255.255.255

[R7-Loopback0]quit

[R7]router ID 7.7.7.7

[R7]ospf 10

[R7-ospf-10]area 0

[R7-ospf-10-0.0.0.0]network 71.1.1.0 0.0.0.255

[R7-ospf-10-0.0.0.0]network 72.1.1.0 0.0.0.255

[R7-ospf-10-0.0.0.0]network 73.1.1.0 0.0.0.255

[R7-ospf-10-0.0.0.0]network 75.1.1.0 0.0.0.255

[R7-ospf-10-0.0.0.0]network 74.1.1.0 0.0.0.255

[R7-ospf-10-0.0.0.0]network 7.7.7.7 0.0.0.0

[R7-ospf-10-0.0.0.0]quit

[R7-ospf-10]quit

[R7]bgp 100

[R7-bgp-100]peer 1.1.1.1 as-number 100

[R7-bgp-100]peer 1.1.1.1 connect-interface loopback 0

[R7-bgp-100]peer 2.2.2.2 as-number 100

[R7-bgp-100]peer 2.2.2.2 connect-interface loopback 0

[R7-bgp-100]peer 3.3.3.3 as-number 100

[R7-bgp-100]peer 3.3.3.3 connect-interface loopback 0

[R7-bgp-100]peer 4.4.4.4 as-number 100

[R7-bgp-100]peer 4.4.4.4 connect-interface loopback 0

[R7-bgp-100]peer 5.5.5.5 as-bumber 100

[R7-bgp-100]peer 5.5.5.5 connect-interfac loopback 0

[R7-bgp-100]peer 8.8.8.8 as-number 200

[R7-bgp-100]peer 8.8.8.8 connect-interface loopback 0

[R7-bgp-100]peer 8.8.8.8 edge-max-hop 3

[R7-bgp-100]peer 2.2.2.2 reflict-clinet

[R7-bgp-100]peer 3.3.3.3 reflict-clinet //配置路由反射器

[R7-bgp-100]peer 4.4.4.4 reflict-clinet

[R7-bgp-100]peer 5.5.5.5 reflict-clinet

[R7-bgp-100]quit

[R7]ip route-static 8.8.8.8 32 78.1.1.8 //配置静态路由

#R8的配置

[R8]interface GigabitEthernet 0/0/0

[R8-GigabitEthernet0/0/0]IP address 78.1.1.8 255.255.255.0

[R8-GigabitEthernet0/0/0]quit

[R8]interface GigabitEthernet 0/0/1

[R8-GigabitEthernet0/0/1]ip address 89.1.1.8 255.255.255.0

[R8-GigabitEthernet0/0/1]ISIS enable

[R8-GigabitEthernet0/0/1]quit

[R8]interface Loopback0

[R8-Loopback0]ip address 8.8.8.8 255.255.255.255

[R8-Loopback0]isis enable

[R8-Loopback0]quit

[R8]router id 8.8.8.8

[R]8isis 1

[R8-isis-1]network-entity 49.0012.0000.0000.1111.00

[R8-isis-1]is-level level-2

[R8-isis-1]quit

[R8]bgp 200

[R8-bgp-200]peer 9.9.9.9 as-number 200

[R8-bgp-200]peer 9.9.9.9 connect-loopback 0

[R8-bgp-200]peer 7.7.7.7 as-number 100

[R8-bgp-200]peer 7.7.7.7 connect-loopback 0

[R8-bgp-200]peer 7.7.7.7 ebge-max-hop 3

[R8-bgp-200]quit

[R8]ip route-static 7.7.7.7 32 78.1.1.7

#R9的配置

[R9]interface GigabitEthernet 0/0/1

[R9-GigabitEthernet0/0/1]IP address 69.1.1.9 255.255.255.0

[R9-GigabitEthernet0/0/1]quit

[R9]interface GigabitEthernet 0/0/2

[R9-GigabitEthernet0/0/2]ip address 89.1.1.9 255.255.255.0

[R9-GigabitEthernet0/0/2]ISIS enable

[R9-GigabitEthernet0/0/2]quit

[R9]interface Loopback0

[R9-Loopback0]ip address 6.6.6.6 255.255.255.255

[R9-Loopback0]isis enable

[R9-Loopback0]quit

[R9]router id 6.6.6.6

[R9]isis 1

[R9-isis-1]network-entity 49.0012.0000.0000.1111.00

[R9-isis-1]is-level level-2

[R9-isis-1]quit

[R9]bgp 200

[R9-bgp-200]peer 8.8.8.8 as-number 200

[R9-bgp-200]peer 8.8.8.8 connect-interface loopback 0

[R9-bgp-200]peer 9.9.9.9 as-number 200

[R9-bgp-200]peer 9.9.9.9 connect-interface loopback 0

[R9-bgp-200]quit

[R9]

得出结论：

路由反射器能打破IBGP的水平分割。