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HCIP Day 11_MPLS Experiment

2022-08-02 03:15:00 【ᝰꫛꫀꪝ】

1、实验要求

1、AS2的ip地址为172.16.0.0/16;
AS2There are two loopback interfaces on each device,One that specializes in building neighbor relationships32位;One represents the user network segment24位;
2、AS2中R3/4/6不得运行BGP协议
3、R1到AS2中R2/3/4The user network segment is based onR5访问;到R5/6/7基于R2
4、Keep backup routes
5、R1/8The loopback can access the internalAS2All user network segments in the loopback

2、实验拓扑

3、分析过程

（1）IP地址的规划

IP地址
172.16.0.0/16
建邻环回：
172.16.0.2/32 R2 L0
172.16.0.3/32 R3 L0
172.16.0.4/32 R4 L0
172.16.0.5/32 R5 L0
172.16.0.6/32 R6 L0
172.16.0.7/32 R7 L0
用户环回：
172.16.2.0/24 R2
172.16.3.0/24 R3
172.16.4.0/24 R4
172.16.5.0/24 R5
172.16.6.0/24 R6
172.16.7.0/24 R7
AS2骨干链路
172.16.1.0/30
172.16.1.4/30
172.16.1.8/30
172.16.1.12/30
172.16.1.16/30
172.16.1.20/30
172.16.1.24/30

（2）OSPF的配置
（3）EBGP的配置——将OSPF重发布进入BGP
（4）IBGP的配置
（5）MPLS的配置
（6）R3/4/6缺省的配置
（7）路由策略

4、配置内容

1、OSPF的配置 R2/3/4/5/6/7都需要进行OSPF的配置,The configuration content is similar,这里以R2为例

2、EBGP的配置这里以R1为例,需要在R1和R2/5之间配置EBGP,R7和R8之间一样——直连建邻

bgp 1
peer 12.1.1.1 as-number 2
peer 15.1.1.1 as-number 2

3、IBGP关系的建立
R2

bgp 2
peer 172.16.0.5 as-number 2
peer 172.16.0.5 connect-interface LoopBack 0
peer 172.16.0.5 next-hop-local

4、MPLS的建立——需要在R2/3/4/5/6/7All the above configuration
R2：建邻RIDNeed to be local realID——在MPLSIt also needs to be configured on the passed interface——这里以R2为例

然后在配置了BGPThere is also an instruction written on the router

[r2]route recursive-lookup tunnel

5、路由策略——在R2与R5上都需要设置
R2上面修改R2/3/4user network segmentCOST值,使得R1access its network segment fromR5走
For reposting reasons,Will cause some not to be published toBGPThe route in is also enteredBGP中,So you have to write some rejection strategies,Block related routes from going out