BGP综合实验

一、实验拓扑

1.png

二、实验需求

1、As1中存在两个环回，一个地址为192.168.1.0/24，该地址不能在任何协议中宣告；

As3中存在两个环回，一个地址为192.168.2.0/24，该地址不能在任何协议中宣告，最终要求这两个环回可以pig通；

2、R1-R8的建邻环回用x.X.X.X/32表示

3、整个AS2的IP地址为172.16.0.0/16，R3-R7上各有一个业务网段，请合理刻分；并且其内部配置0sPF协议

4、As间的骨干链路IP地址随意定制；

5、使用BG协议让整个网路所有设备的环回可以互相访问；

6、减少路由条目数量，避免环路出现；

三、实验步骤

1、配置IP地址部分

[R1]int g0/0/0

[R1-GigabitEthernet0/0/0]ip address 12.1.1.1 255.255.255.0

[R1]int l0

[R1-LoopBack0]ip address 1.1.1.1 255.255.255.255

[R1-LoopBack0]int l1

[R1-LoopBack1]ip address 192.168.1.7 255.255.255.0

[R2]int g0/0/0

[R2-GigabitEthernet0/0/0]12.1.1.2 255.255.255.0

[R2-GigabitEthernet0/0/0]int g0/0/1

[R2-GigabitEthernet0/0/1] ip address 172.16.1.1 255.255.255.252

[R2-GigabitEthernet0/0/1]int g0/0/2

[R2-GigabitEthernet0/0/2]ip address 172.16.1.21 255.255.255.252

[R2]int l1

[R2-LoopBack1]ip address 2.2.2.2 255.255.255.255

[R3]int g0/0/0

[R3-GigabitEthernet0/0/0]ip address 172.16.1.2 255.255.255.252

[R3]int g0/0/1

[R3-GigabitEthernet0/0/1]ip address 172.16.1.5 255.255.255.252

[R3]int l0

[R3-LoopBack0] ip address 3.3.3.3 255.255.255.255

[R3-LoopBack1]int l1

[R3-LoopBack1]ip address 172.16.3.1 255.255.255.0

[R4]int g0/0/0

[R4-GigabitEthernet0/0/0] ip address 172.16.1.6 255.255.255.252

[R4-GigabitEthernet0/0/0]int g0/0/1

[R4-GigabitEthernet0/0/1] ip address 172.16.1.9 255.255.255.252

[R4]int l0

[R4-LoopBack0]ip add 4.4.4.4 32

[R4]int l1

[R4-LoopBack1] ip address 172.16.4.1 255.255.255.0

[R6]int g0/0/0

[R6-GigabitEthernet0/0/0] ip address 172.16.1.18 255.255.255.252 [R6-GigabitEthernet0/0/0]int g0/0/1

[R6-GigabitEthernet0/0/1]ip address 172.16.1.13 255.255.255.252 [R6-GigabitEthernet0/0/1]int l0

[R6-LoopBack0] ip address 6.6.6.6 255.255.255.255

[R6-GigabitEthernet0/0/1]int l1

[R6-LoopBack1]ip address 172.16.6.1 255.255.255.0

[R5]int g0/0/0

[R5-GigabitEthernet0/0/0] ip address 172.16.1.22 255.255.255.252

[R5-GigabitEthernet0/0/0]int g0/0/1

[R5-GigabitEthernet0/0/1]ip address 172.16.1.17 255.255.255.252

[R5-GigabitEthernet0/0/1]int l0

[R5-LoopBack0] ip address 5.5.5.5 255.255.255.255

[R5-GigabitEthernet0/0/1]int l1

[R5-LoopBack1]ip address 172.16.5.1 255.255.255.0

[R7]int g0/0/0

[R7-GigabitEthernet0/0/0]ip address 172.16.1.14 255.255.255.252

[R7-GigabitEthernet0/0/0]int g0/0/1

[R7-GigabitEthernet0/0/1]ip address 172.16.1.10 255.255.255.252

[R7-GigabitEthernet0/0/1]int g0/0/2

[R7-GigabitEthernet0/0/2]ip address 34.1.1.1 255.255.255.0

[R7]int l0

[R7-LoopBack0]ip address 7.7.7.7 255.255.255.255

[R7]int l1

[R7-LoopBack1] ip address 172.16.7.1 255.255.255.0

[R8]int g0/0/0

[R8-GigabitEthernet0/0/0]ip address 34.1.1.2 255.255.255.0

[R8]int l0

[R8-LoopBack0]ip address 8.8.8.8 255.255.255.255

[R8-LoopBack0]int l1

[R8-LoopBack1] ip address 192.168.2.1 255.255.255.0

2、配置OSPF部分，不允许宣告业务网段

[R2]ospf 1 router-id 2.2.2.2

[R2-ospf-1]area 0

[R2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0

[R2-ospf-1-area-0.0.0.0] network 172.16.1.0 0.0.0.255

[R3]ospf 1 router-id 3.3.3.3

[R3-ospf-1]area 0

[R3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0

[R3-ospf-1-area-0.0.0.0] network 172.16.0.0 0.0.255.255

[R3-ospf-1-area-0.0.0.0] network 172.16.3.0 0.0.0.255

[R4]ospf 1 router-id 4.4.4.4

[R4-ospf-1]area 0

[R4-ospf-1-area-0.0.0.0]network 4.4.4.4 0.0.0.0

[R4-ospf-1-area-0.0.0.0] network 172.16.0.0 0.0.255.255

[R4-ospf-1-area-0.0.0.0 network 172.16.4.0 0.0.0.255

[R5]ospf 1 router-id 5.5.5.5

[R5-ospf-1]area 0

[R5-ospf-1-area-0.0.0.0]network 5.5.5.5 0.0.0.0

[R5-ospf-1-area-0.0.0.0] network 172.16.1.0 0.0.0.255

[R5-ospf-1-area-0.0.0.0 network 172.16.5.0 0.0.0.255

[R6]ospf 1 router-id 6.6.6.6

[R6-ospf-1]area 0

[R6-ospf-1-area-0.0.0.0]network 6.6.6.6 0.0.0.0

[R6-ospf-1-area-0.0.0.0] network 172.16.1.0 0.0.0.255

[R6-ospf-1-area-0.0.0.0network 172.16.5.0 0.0.0.255

[R7]ospf 1 router-id 7.7.7.7

[R7-ospf-1]area 0

[R7-ospf-1-area-0.0.0.0]network 7.7.7.7 0.0.0.0

[R7-ospf-1-area-0.0.0.0] network 172.16.1.0 0.0.0.255

[R7]-ospf-1-area-0.0.0.0] network 172.16.7.0 0.0.0.255

检查OSPF路由表

2.png
3.png

3、配置BGP

（1）R1和R2建立 EBGP 邻居

[R1]bgp 1

[r1] peer 12.1.1.2 as-number 2

[R2]bgp 64512

[R2-bgp]confederation id 2

[R2-bgp]confederation peer-as 64513

[R2-bgp]peer 12.1.1.1 as-number 1

[R2-bgp]peer 3.3.3.3 as 64512

[R2-bgp] peer 3.3.3.3 connect-interface LoopBack1

[R2-bgp] peer 172.16.1.22 as-number 64513

[R2-bgp] peer 172.16.1.22 next-hop-local

[r3]bgp 64512

[r3-bgp]con

[r3-bgp]confederation id 2

[r3-bgp]peer 2.2.2.2 as 64512

[r3-bgp]peer 2.2.2.2 connect-interface l0

[r3-bgp]peer 4.4.4.4 as 64512

[r3-bgp]peer 4.4.4.4 con

[r3-bgp]peer 4.4.4.4 connect-interface

[r3-bgp]peer 4.4.4.4 connect-interface l0

[r4]bgp 64512

[r4-bgp]con

[r4-bgp]confederation id 2

[r4-bgp]peer 3.3.3.3 as 64512

[r4-bgp]peer 3.3.3.3

[r4-bgp]peer 3.3.3.3 con

[r4-bgp]peer 3.3.3.3 connect-interface l0

[r5]bgp 64513

[r5-bgp]confederation id 2

[r5-bgp]confederation peer-as 64512

[r5-bgp]peer 172.16.1.21 as

[r5-bgp]peer 172.16.1.21 as 64512

[r5-bgp]peer 172.16.1.21 n

[r5-bgp]peer 172.16.1.21 next-hop-local

[r5-bgp]peer 6.6.6.6 as 645

[r5-bgp]peer 6.6.6.6 as 64513

[r5-bgp]peer 6.6.6.6 c

[r5-bgp]peer 6.6.6.6 connect-interface l0

[r5-bgp]peer 6.6.6.6 n

[r5-bgp]peer 6.6.6.6 next-hop-lo

[r5-bgp]peer 6.6.6.6 next-hop-local

[r6]bgp 64513

[r6-bgp]con

[r6-bgp]confederation id 2

[r6-bgp]peer 5.5.5.5 as

[r6-bgp]peer 5.5.5.5 as-number 64513

[r6-bgp]peer 5.5.5.5 con

[r6-bgp]peer 7.7.7.7 as 64513

[r6-bgp]peer 7.7.7.7 lo

[r6-bgp]peer 7.7.7.7 con

[r6-bgp]peer 7.7.7.7 connect-interface l0

[r7]bgp 64513

[r7-bgp]con

[r7-bgp]confederation id 2

[r7-bgp]peer 34.1.1.2 as 3

[r7-bgp]peer 6.6.6.6 as 64513

[r7-bgp]peer 6.6.6.6 c

[r7-bgp]peer 6.6.6.6 con

[r7-bgp]peer 6.6.6.6 connect-interface l0

[r7-bgp]peer 6.6.6.6 n

[r7-bgp]peer 6.6.6.6 next-hop-local

[r8]bgp 3

[r8-bgp]peer 34.1.1.1 as 2

4.png

[r1]bgp 1

[r1-bgp]ne

[r1-bgp]network 1.1.1.1 32

[r8]bgp 3

[r8-bgp]ne

[r8-bgp]network 8.8.8.8 32

[r3]bgp 64512

[r3-bgp]ne

[r3-bgp]network 172.16.3.0 24

[r4]bgp 64512

[r4-bgp]ne

[r4-bgp]network 172.16.4.0 24

[r5]bgp 64513

[r5-bgp]ne

[r5-bgp]network 172.16.5.0 24

[r6]bgp 64513

[r6-bgp]ne

[r6-bgp]network 172.16.6.0 24

[r7]bgp 64513

[r7-bgp]ne

[r7-bgp]network 172.16.7.0 24

5.png
  1. 配置反射器

[r3]bgp 64512

[r3-bgp]peer 2.2.2.2 re

[r3-bgp]peer 2.2.2.2 reflect-client

[r3-bgp]peer 4.4.4.4 reflect-client

[r3-bgp]re

[r3-bgp]reflector cl

[r3-bgp]reflector cluster-id 3.3.3.3

[r6]bgp 64513

[r6-bgp]pe

[r6-bgp]peer 5.5.5.5 r

[r6-bgp]peer 5.5.5.5 reflect-client

[r6-bgp]peer 7.7.7.7 re

[r6-bgp]peer 7.7.7.7 reflect-client

[r6-bgp]reflector cluster-id 6.6.6.6

20.png
  1. 路由聚合

[r2]bgp 64512

[r2-bgp]aggregate 172.16.0.0 21 detail-suppressed as-set

[r7]bgp 64513

[r7-bgp]a

[r7-bgp]agg

[r7-bgp]aggregate 172.16.0.0 21 det

[r7-bgp]aggregate 172.16.0.0 21 detail-suppressed as

[r7-bgp]aggregate 172.16.0.0 21 detail-suppressed as-set

  1. 路由引入

[r8]acl 2000

[r8-acl-basic-2000]ru

[r8-acl-basic-2000]rule p

[r8-acl-basic-2000]rule permit so

[r8-acl-basic-2000]rule permit source 192.168.2.0 0.0.0.255

[r8-acl-basic-2000]q

[r8]ro

[r8]route

[r8]route-policy aa per

[r8]route-policy aa permit n

[r8]route-policy aa permit node 10

Info: New Sequence of this List.

[r8-route-policy]if

[r8-route-policy]if-match acl 2000

[r8-route-policy]q

[r8]bgp 3

[r8-bgp]im

[r8-bgp]import-route di

[r8-bgp]import-route direct ro

[r8-bgp]import-route direct route-policy aa

[r1-bgp]acl 2000

[r1-acl-basic-2000]ru

[r1-acl-basic-2000]rule pe

[r1-acl-basic-2000]rule permit so

[r1-acl-basic-2000]rule permit source 192.168.1.0 0.0.0.255

[r1-acl-basic-2000]q

[r1]ro

[r1]route

[r1]route-policy aa pe

[r1]route-policy aa permit nod

[r1]route-policy aa permit node 10

Info: New Sequence of this List.

[r1-route-policy]if

[r1-route-policy]if-match acl 2000

[r1-route-policy]q

[r1]bgp 1

[r1-bgp]im

[r1-bgp]import-route dir

[r1-bgp]import-route direct ro

[r1-bgp]import-route direct route-policy aa

1766294005123.png
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