实验题目如下:
实验拓扑如下:
实验要求如下:
【1】R2-7每台路由器均存在一个环回接口用于建立邻居,同时还存在一个环回来代表连接用户的 接口;最终这些连接用户的接口网络需要可以和R1/8的环回通讯
【2】AS2网段地址172.16.0.0/16 减路由条目数量
实验思路如下:
(1)合理的IP规划以及合理的IP分配
(2)合理的配置IGP
(3)合理的配置BGP
(4)合理的BGP路由宣告以及汇总
实验步骤如下:
1、合理的IP分配
指令如下:
R1:
[R1-LoopBack0]ip add 1.1.1.1 24
[R1-LoopBack0]int g0/0/1
[R1-GigabitEthernet0/0/1]ip add 12.1.1.1 24
R2:
[R2]int l0
[R2-LoopBack0]ip add 172.16.224.1 32
[R2-LoopBack0]int l1
[R2-LoopBack1]ip add 172.16.32.1 19
[R2-LoopBack1]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 12.1.1.2 24
[R2-GigabitEthernet0/0/0]int g0/0/1
[R2-GigabitEthernet0/0/1]ip add 172.16.0.1 30
[R2-GigabitEthernet0/0/1]int g0/0/2
[R2-GigabitEthernet0/0/2]ip add 172.16.0.21 30
R3:
[R3]int l0
[R3-LoopBack0]ip add 172.16.224.2 32
[R3-LoopBack0]int l1
[R3-LoopBack1]ip add 172.16.64.1 19
[R3-LoopBack1]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 172.16.0.2 30
[R3-GigabitEthernet0/0/0]int g0/0/1
[R3-GigabitEthernet0/0/1]ip add 172.16.0.5 30
R4:
[R4]int l0
[R4-LoopBack0]ip add 172.16.224.3 32
[R4-LoopBack0]int l1
[R4-LoopBack1]ip add 172.16.96.1 19
[R4-LoopBack1]int g0/0/0
[R4-GigabitEthernet0/0/0]ip add 172.16.0.6 30
[R4-GigabitEthernet0/0/0]int g0/0/1
[R4-GigabitEthernet0/0/1]ip add 172.16.0.9 30
R5:
[R5]int l0
[R5-LoopBack0]ip add 172.16.224.4 32
[R5-LoopBack0]int l1
[R5-LoopBack1]ip add 172.16.128.1 19
[R5-LoopBack1]int g0/0/0
[R5-GigabitEthernet0/0/0]ip add 172.16.0.22 30
[R5-GigabitEthernet0/0/0]int g0/0/1
[R5-GigabitEthernet0/0/1]ip add 172.16.0.17 30
R6:
[R6]int l0
[R6-LoopBack0]ip add 172.16.224.5 32
[R6-LoopBack0]int l1
[R6-LoopBack1]ip add 172.16.160.1 19
[R6-LoopBack1]int g0/0/0
[R6-GigabitEthernet0/0/0]ip add 172.16.0.18 30
[R6-GigabitEthernet0/0/0]int g0/0/1
[R6-GigabitEthernet0/0/1]ip add 172.16.0.13 30
R7:
[R7]int l0
[R7-LoopBack0]ip add 172.16.224.6 32
[R7-LoopBack0]int l1
[R7-LoopBack1]ip add 172.16.192.1 19
[R7-LoopBack1]int g0/0/2
[R7-GigabitEthernet0/0/2]ip add 172.16.0.10 30
[R7-GigabitEthernet0/0/2]int g0/0/0
[R7-GigabitEthernet0/0/0]ip add 172.16.0.14 30
[R7-GigabitEthernet0/0/0]int g0/0/1
[R7-GigabitEthernet0/0/1]ip add 78.1.1.1 24
R8:
[R8]int l0
[R8-LoopBack0]ip add 8.8.8.8 24
[R8-LoopBack0]int g0/0/0
[R8-GigabitEthernet0/0/0]ip add 78.1.1.2 24
2、OSPF的配置
指令如下:
R2:
[R2]ospf 1
[R2-ospf-1]
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255
R3:
[R3]ospf 1
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255
R4:
[R4]ospf 1
[R4-ospf-1]area 0
[R4-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255
R5:
[R5]ospf 1
[R5-ospf-1]area 0
[R5-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255
R6:
[R6]ospf 1
[R6-ospf-1]area 0
[R6-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255
R7:
[R7]ospf 1
[R7-ospf-1]area 0
[R7-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255
3、BGP配置
指令如下:
R1:
[R1]bgp 1
[R1-bgp]router-id 1.1.1.1
[R1-bgp]peer 12.1.1.2 as-number 2
R2:
[R2]bgp 64512
[R2-bgp]router-id 2.2.2.2
[R2-bgp]confederation id 2
[R2-bgp]peer 12.1.1.1 as-number 1
[R2-bgp]peer 172.16.224.2 as-number 64512
[R2-bgp]peer 172.16.224.2 connect-interface LoopBack 0
[R2-bgp]confederation peer-as 64513
[R2-bgp]peer 172.16.224.4 as-number 64513
[R2-bgp]peer 172.16.224.4 connect-interface LoopBack 0
[R2-bgp]peer 172.16.224.4 ebgp-max-hop 2
R3:
[R3]bgp 64512
[R3-bgp]router-id 3.3.3.3
[R3-bgp]confederation id 2
[R3-bgp]peer 172.16.224.1 as-number 64512
[R3-bgp]peer 172.16.224.1 connect-interface LoopBack 0
[R3-bgp]peer 172.16.224.3 as-number 64512
[R3-bgp]peer 172.16.224.3 connect-interface LoopBack 0
R4:
[R4]bgp 64512
[R4-bgp]router-id 4.4.4.4
[R4-bgp]confederation id 2
[R4-bgp]peer 172.16.224.2 as-number 64512
[R4-bgp]peer 172.16.224.2 connect-interface LoopBack 0
[R4-bgp]confederation peer-as 64513
[R4-bgp]peer 172.16.224.6 as-number 64513
[R4-bgp]peer 172.16.224.6 connect-interface LoopBack 0
[R4-bgp]peer 172.16.224.6 ebgp-max-hop 2
R5:
[R5]bgp 64513
[R5-bgp]router-id 5.5.5.5
[R5-bgp]confederation id 2
[R5-bgp]peer 172.16.224.5 as-number 64513
[R5-bgp]peer 172.16.224.5 connect-interface LoopBack 0
[R5-bgp]confederation peer-as 64512
[R5-bgp]peer 172.16.224.1 as-number 64512
[R5-bgp]peer 172.16.224.1 connect-interface LoopBack 0
[R5-bgp]peer 172.16.224.1 ebgp-max-hop 2
R6:
[R6]bgp 64513
[R6-bgp]router-id 6.6.6.6
[R6-bgp]confederation id 2
[R6-bgp]peer 172.16.224.4 as-number 64513
[R6-bgp]peer 172.16.224.4 connect-interface LoopBack 0
[R6-bgp]peer 172.16.224.6 as-number 64513
[R6-bgp]peer 172.16.224.6 connect-interface LoopBack 0
R7:
[R7]bgp 64513
[R7-bgp]router-id 7.7.7.7
[R7-bgp]confederation id 2
[R7-bgp]peer 172.16.224.5 as-number 64513
[R7-bgp]peer 172.16.224.5 connect-interface LoopBack 0
[R7-bgp]peer 78.1.1.2 as-number 3
[R7-bgp]confederation peer-as 64512
[R7-bgp]peer 172.16.224.3 as-number 64512
[R7-bgp]peer 172.16.224.3 connect-interface LoopBack 0
[R7-bgp]peer 172.16.224.3 ebgp-max-hop 2
R8:
[R8]bgp 3
[R8-bgp]router-id 8.8.8.8
[R8-bgp]peer 78.1.1.1 as-number 2
4、BGP宣告
注意:
宣告选择汇总宣告或者分开一条一条地宣告
指令如下:
R1:
[R1]bgp 1
[R1-bgp]network 1.1.1.0 24
R2:
[R2]bgp 64512
[R2-bgp]network 172.16.32.0 19
R3:
[R3]bgp 64512
[R3-bgp]network 172.16.64.0 19
R4:
[R4]bgp 64512
[R4-bgp]network 172.16.96.0 19
R5:
[R5]bgp 64513
[R5-bgp]network 172.16.128.0 19
R6:
[R6]bgp 64513
[R6-bgp]network 172.16.160.0 19
R7:
[R7]bgp 64513
[R7-bgp]network 172.16.192.0 19
R8:
[R8]bgp 3
[R8-bgp]network 8.8.8.0 24
5、测试如下:
R1: